./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/popl20-more-buffer-mult2.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 df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:13:54,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:13:54,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:13:54,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:13:54,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:13:54,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:13:54,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:13:54,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:13:54,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:13:54,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:13:54,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:13:54,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:13:54,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:13:54,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:13:54,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:13:54,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:13:54,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:13:54,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:13:54,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:13:54,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:13:54,393 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:13:54,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:13:54,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:13:54,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:13:54,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:13:54,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:13:54,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:13:54,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:13:54,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:13:54,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:13:54,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:13:54,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:13:54,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:13:54,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:13:54,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:13:54,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:13:54,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:13:54,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:13:54,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:13:54,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:13:54,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:13:54,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:13:54,408 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:13:54,425 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:13:54,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:13:54,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:13:54,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:13:54,427 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:13:54,427 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:13:54,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:13:54,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:13:54,428 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:13:54,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:13:54,428 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:13:54,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:13:54,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:13:54,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:13:54,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:13:54,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:13:54,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:13:54,430 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:13:54,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:13:54,430 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:13:54,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:13:54,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:13:54,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:13:54,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:13:54,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:13:54,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:13:54,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:13:54,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:13:54,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:13:54,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:13:54,436 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:13:54,437 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:13:54,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:13:54,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a [2022-07-13 22:13:54,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:13:54,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:13:54,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:13:54,698 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:13:54,699 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:13:54,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2022-07-13 22:13:54,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9d9237dc/5dbe43934544453da981afd39f451d46/FLAG87e48b705 [2022-07-13 22:13:55,145 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:13:55,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2022-07-13 22:13:55,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9d9237dc/5dbe43934544453da981afd39f451d46/FLAG87e48b705 [2022-07-13 22:13:55,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9d9237dc/5dbe43934544453da981afd39f451d46 [2022-07-13 22:13:55,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:13:55,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:13:55,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:13:55,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:13:55,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:13:55,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:13:55" (1/1) ... [2022-07-13 22:13:55,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@550484dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:55, skipping insertion in model container [2022-07-13 22:13:55,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:13:55" (1/1) ... [2022-07-13 22:13:55,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:13:55,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:13:55,753 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/popl20-more-buffer-mult2.wvr.c[4099,4112] [2022-07-13 22:13:55,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:13:55,769 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:13:55,790 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/popl20-more-buffer-mult2.wvr.c[4099,4112] [2022-07-13 22:13:55,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:13:55,805 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:13:55,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:55 WrapperNode [2022-07-13 22:13:55,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:13:55,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:13:55,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:13:55,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:13:55,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:55" (1/1) ... [2022-07-13 22:13:55,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:55" (1/1) ... [2022-07-13 22:13:55,843 INFO L137 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 303 [2022-07-13 22:13:55,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:13:55,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:13:55,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:13:55,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:13:55,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:55" (1/1) ... [2022-07-13 22:13:55,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:55" (1/1) ... [2022-07-13 22:13:55,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:55" (1/1) ... [2022-07-13 22:13:55,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:55" (1/1) ... [2022-07-13 22:13:55,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:55" (1/1) ... [2022-07-13 22:13:55,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:55" (1/1) ... [2022-07-13 22:13:55,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:55" (1/1) ... [2022-07-13 22:13:55,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:13:55,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:13:55,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:13:55,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:13:55,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:55" (1/1) ... [2022-07-13 22:13:55,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:13:55,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:13:55,941 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) [2022-07-13 22:13:55,960 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 [2022-07-13 22:13:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:13:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:13:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:13:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:13:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:13:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:13:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:13:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:13:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-13 22:13:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-13 22:13:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-13 22:13:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-13 22:13:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:13:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 22:13:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 22:13:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:13:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:13:55,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:13:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:13:55,988 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:13:56,100 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:13:56,102 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:13:56,456 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:13:56,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:13:56,692 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-13 22:13:56,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:13:56 BoogieIcfgContainer [2022-07-13 22:13:56,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:13:56,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:13:56,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:13:56,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:13:56,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:13:55" (1/3) ... [2022-07-13 22:13:56,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e19ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:13:56, skipping insertion in model container [2022-07-13 22:13:56,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:13:55" (2/3) ... [2022-07-13 22:13:56,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e19ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:13:56, skipping insertion in model container [2022-07-13 22:13:56,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:13:56" (3/3) ... [2022-07-13 22:13:56,708 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2022-07-13 22:13:56,713 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:13:56,721 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:13:56,721 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:13:56,721 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:13:56,803 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-13 22:13:56,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 224 places, 229 transitions, 490 flow [2022-07-13 22:13:56,956 INFO L129 PetriNetUnfolder]: 18/225 cut-off events. [2022-07-13 22:13:56,956 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-13 22:13:56,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 225 events. 18/225 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 110 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 186. Up to 2 conditions per place. [2022-07-13 22:13:56,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 229 transitions, 490 flow [2022-07-13 22:13:56,974 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 212 transitions, 448 flow [2022-07-13 22:13:56,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:13:56,990 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@aec2203, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@517b18d7 [2022-07-13 22:13:56,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-13 22:13:57,041 INFO L129 PetriNetUnfolder]: 18/211 cut-off events. [2022-07-13 22:13:57,041 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-13 22:13:57,041 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:13:57,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:13:57,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:13:57,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:13:57,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1926229925, now seen corresponding path program 1 times [2022-07-13 22:13:57,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:13:57,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124645769] [2022-07-13 22:13:57,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:57,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:13:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:57,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:13:57,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:13:57,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124645769] [2022-07-13 22:13:57,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124645769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:13:57,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:13:57,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:13:57,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917622123] [2022-07-13 22:13:57,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:13:57,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:13:57,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:13:57,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:13:57,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:13:57,380 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 229 [2022-07-13 22:13:57,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 212 transitions, 448 flow. Second operand has 2 states, 2 states have (on average 209.5) internal successors, (419), 2 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:57,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:13:57,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 229 [2022-07-13 22:13:57,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:13:57,558 INFO L129 PetriNetUnfolder]: 123/515 cut-off events. [2022-07-13 22:13:57,559 INFO L130 PetriNetUnfolder]: For 106/107 co-relation queries the response was YES. [2022-07-13 22:13:57,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 515 events. 123/515 cut-off events. For 106/107 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1725 event pairs, 51 based on Foata normal form. 125/580 useless extension candidates. Maximal degree in co-relation 504. Up to 163 conditions per place. [2022-07-13 22:13:57,567 INFO L132 encePairwiseOnDemand]: 217/229 looper letters, 12 selfloop transitions, 0 changer transitions 6/200 dead transitions. [2022-07-13 22:13:57,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 200 transitions, 448 flow [2022-07-13 22:13:57,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:13:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-13 22:13:57,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 432 transitions. [2022-07-13 22:13:57,584 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9432314410480349 [2022-07-13 22:13:57,584 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 432 transitions. [2022-07-13 22:13:57,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 432 transitions. [2022-07-13 22:13:57,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:13:57,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 432 transitions. [2022-07-13 22:13:57,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 216.0) internal successors, (432), 2 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:57,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:57,599 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:57,601 INFO L186 Difference]: Start difference. First operand has 207 places, 212 transitions, 448 flow. Second operand 2 states and 432 transitions. [2022-07-13 22:13:57,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 200 transitions, 448 flow [2022-07-13 22:13:57,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 200 transitions, 432 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-13 22:13:57,610 INFO L242 Difference]: Finished difference. Result has 200 places, 194 transitions, 396 flow [2022-07-13 22:13:57,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=396, PETRI_PLACES=200, PETRI_TRANSITIONS=194} [2022-07-13 22:13:57,616 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, -7 predicate places. [2022-07-13 22:13:57,617 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 194 transitions, 396 flow [2022-07-13 22:13:57,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 209.5) internal successors, (419), 2 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:57,618 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:13:57,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:13:57,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:13:57,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:13:57,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:13:57,620 INFO L85 PathProgramCache]: Analyzing trace with hash 374494866, now seen corresponding path program 1 times [2022-07-13 22:13:57,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:13:57,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625505102] [2022-07-13 22:13:57,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:57,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:13:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:13:58,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:13:58,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625505102] [2022-07-13 22:13:58,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625505102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:13:58,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:13:58,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:13:58,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322204306] [2022-07-13 22:13:58,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:13:58,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:13:58,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:13:58,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:13:58,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:13:58,050 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 229 [2022-07-13 22:13:58,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 194 transitions, 396 flow. Second operand has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:58,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:13:58,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 229 [2022-07-13 22:13:58,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:13:58,210 INFO L129 PetriNetUnfolder]: 133/521 cut-off events. [2022-07-13 22:13:58,210 INFO L130 PetriNetUnfolder]: For 31/32 co-relation queries the response was YES. [2022-07-13 22:13:58,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 521 events. 133/521 cut-off events. For 31/32 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1672 event pairs, 14 based on Foata normal form. 1/481 useless extension candidates. Maximal degree in co-relation 736. Up to 133 conditions per place. [2022-07-13 22:13:58,216 INFO L132 encePairwiseOnDemand]: 223/229 looper letters, 42 selfloop transitions, 3 changer transitions 4/206 dead transitions. [2022-07-13 22:13:58,217 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 206 transitions, 523 flow [2022-07-13 22:13:58,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:13:58,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:13:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 915 transitions. [2022-07-13 22:13:58,220 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7991266375545851 [2022-07-13 22:13:58,220 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 915 transitions. [2022-07-13 22:13:58,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 915 transitions. [2022-07-13 22:13:58,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:13:58,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 915 transitions. [2022-07-13 22:13:58,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:58,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:58,228 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:58,228 INFO L186 Difference]: Start difference. First operand has 200 places, 194 transitions, 396 flow. Second operand 5 states and 915 transitions. [2022-07-13 22:13:58,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 206 transitions, 523 flow [2022-07-13 22:13:58,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 206 transitions, 523 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 22:13:58,238 INFO L242 Difference]: Finished difference. Result has 201 places, 196 transitions, 419 flow [2022-07-13 22:13:58,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=201, PETRI_TRANSITIONS=196} [2022-07-13 22:13:58,239 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, -6 predicate places. [2022-07-13 22:13:58,240 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 196 transitions, 419 flow [2022-07-13 22:13:58,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:58,241 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:13:58,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:13:58,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:13:58,241 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:13:58,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:13:58,243 INFO L85 PathProgramCache]: Analyzing trace with hash -432504597, now seen corresponding path program 1 times [2022-07-13 22:13:58,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:13:58,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405532955] [2022-07-13 22:13:58,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:58,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:13:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:13:58,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:13:58,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405532955] [2022-07-13 22:13:58,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405532955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:13:58,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:13:58,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:13:58,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070516093] [2022-07-13 22:13:58,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:13:58,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:13:58,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:13:58,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:13:58,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:13:58,338 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 229 [2022-07-13 22:13:58,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 196 transitions, 419 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:58,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:13:58,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 229 [2022-07-13 22:13:58,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:13:58,458 INFO L129 PetriNetUnfolder]: 208/754 cut-off events. [2022-07-13 22:13:58,458 INFO L130 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2022-07-13 22:13:58,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 754 events. 208/754 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3338 event pairs, 75 based on Foata normal form. 12/670 useless extension candidates. Maximal degree in co-relation 1178. Up to 207 conditions per place. [2022-07-13 22:13:58,465 INFO L132 encePairwiseOnDemand]: 226/229 looper letters, 30 selfloop transitions, 2 changer transitions 0/208 dead transitions. [2022-07-13 22:13:58,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 208 transitions, 519 flow [2022-07-13 22:13:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:13:58,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:13:58,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2022-07-13 22:13:58,467 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9082969432314411 [2022-07-13 22:13:58,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2022-07-13 22:13:58,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2022-07-13 22:13:58,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:13:58,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2022-07-13 22:13:58,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:58,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:58,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:58,481 INFO L186 Difference]: Start difference. First operand has 201 places, 196 transitions, 419 flow. Second operand 3 states and 624 transitions. [2022-07-13 22:13:58,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 208 transitions, 519 flow [2022-07-13 22:13:58,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 208 transitions, 511 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-13 22:13:58,486 INFO L242 Difference]: Finished difference. Result has 199 places, 197 transitions, 426 flow [2022-07-13 22:13:58,487 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=199, PETRI_TRANSITIONS=197} [2022-07-13 22:13:58,487 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, -8 predicate places. [2022-07-13 22:13:58,488 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 197 transitions, 426 flow [2022-07-13 22:13:58,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:58,488 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:13:58,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:13:58,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:13:58,489 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:13:58,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:13:58,490 INFO L85 PathProgramCache]: Analyzing trace with hash -3074061, now seen corresponding path program 1 times [2022-07-13 22:13:58,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:13:58,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708152568] [2022-07-13 22:13:58,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:58,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:13:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:13:58,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:13:58,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708152568] [2022-07-13 22:13:58,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708152568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:13:58,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:13:58,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:13:58,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508056815] [2022-07-13 22:13:58,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:13:58,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:13:58,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:13:58,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:13:58,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:13:58,576 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 229 [2022-07-13 22:13:58,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 197 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:58,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:13:58,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 229 [2022-07-13 22:13:58,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:13:58,717 INFO L129 PetriNetUnfolder]: 152/674 cut-off events. [2022-07-13 22:13:58,717 INFO L130 PetriNetUnfolder]: For 210/211 co-relation queries the response was YES. [2022-07-13 22:13:58,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 674 events. 152/674 cut-off events. For 210/211 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2872 event pairs, 47 based on Foata normal form. 12/606 useless extension candidates. Maximal degree in co-relation 1064. Up to 171 conditions per place. [2022-07-13 22:13:58,722 INFO L132 encePairwiseOnDemand]: 226/229 looper letters, 31 selfloop transitions, 2 changer transitions 0/209 dead transitions. [2022-07-13 22:13:58,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 209 transitions, 535 flow [2022-07-13 22:13:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:13:58,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:13:58,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2022-07-13 22:13:58,724 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9068413391557496 [2022-07-13 22:13:58,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2022-07-13 22:13:58,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2022-07-13 22:13:58,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:13:58,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2022-07-13 22:13:58,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:58,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:58,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:58,729 INFO L186 Difference]: Start difference. First operand has 199 places, 197 transitions, 426 flow. Second operand 3 states and 623 transitions. [2022-07-13 22:13:58,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 209 transitions, 535 flow [2022-07-13 22:13:58,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 209 transitions, 532 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:13:58,733 INFO L242 Difference]: Finished difference. Result has 201 places, 198 transitions, 438 flow [2022-07-13 22:13:58,734 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=201, PETRI_TRANSITIONS=198} [2022-07-13 22:13:58,734 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, -6 predicate places. [2022-07-13 22:13:58,735 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 198 transitions, 438 flow [2022-07-13 22:13:58,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:58,735 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:13:58,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:13:58,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:13:58,736 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:13:58,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:13:58,736 INFO L85 PathProgramCache]: Analyzing trace with hash 670657466, now seen corresponding path program 1 times [2022-07-13 22:13:58,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:13:58,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4893077] [2022-07-13 22:13:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:58,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:13:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:13:58,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:13:58,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4893077] [2022-07-13 22:13:58,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4893077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:13:58,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:13:58,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:13:58,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316336795] [2022-07-13 22:13:58,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:13:58,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:13:58,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:13:58,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:13:58,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:13:58,825 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 229 [2022-07-13 22:13:58,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 198 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:58,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:13:58,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 229 [2022-07-13 22:13:58,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:13:59,039 INFO L129 PetriNetUnfolder]: 107/708 cut-off events. [2022-07-13 22:13:59,039 INFO L130 PetriNetUnfolder]: For 229/230 co-relation queries the response was YES. [2022-07-13 22:13:59,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 708 events. 107/708 cut-off events. For 229/230 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2815 event pairs, 36 based on Foata normal form. 8/649 useless extension candidates. Maximal degree in co-relation 1135. Up to 155 conditions per place. [2022-07-13 22:13:59,044 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 60 selfloop transitions, 11 changer transitions 0/227 dead transitions. [2022-07-13 22:13:59,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 227 transitions, 659 flow [2022-07-13 22:13:59,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:13:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:13:59,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1668 transitions. [2022-07-13 22:13:59,049 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8093158660844251 [2022-07-13 22:13:59,049 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1668 transitions. [2022-07-13 22:13:59,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1668 transitions. [2022-07-13 22:13:59,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:13:59,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1668 transitions. [2022-07-13 22:13:59,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 185.33333333333334) internal successors, (1668), 9 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:59,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:59,059 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:59,059 INFO L186 Difference]: Start difference. First operand has 201 places, 198 transitions, 438 flow. Second operand 9 states and 1668 transitions. [2022-07-13 22:13:59,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 227 transitions, 659 flow [2022-07-13 22:13:59,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 227 transitions, 656 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:13:59,064 INFO L242 Difference]: Finished difference. Result has 210 places, 202 transitions, 478 flow [2022-07-13 22:13:59,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=478, PETRI_PLACES=210, PETRI_TRANSITIONS=202} [2022-07-13 22:13:59,067 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, 3 predicate places. [2022-07-13 22:13:59,067 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 202 transitions, 478 flow [2022-07-13 22:13:59,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:59,068 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:13:59,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:13:59,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:13:59,069 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:13:59,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:13:59,070 INFO L85 PathProgramCache]: Analyzing trace with hash -730105896, now seen corresponding path program 1 times [2022-07-13 22:13:59,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:13:59,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579831795] [2022-07-13 22:13:59,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:59,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:13:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:13:59,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:13:59,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579831795] [2022-07-13 22:13:59,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579831795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:13:59,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:13:59,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:13:59,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732949554] [2022-07-13 22:13:59,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:13:59,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:13:59,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:13:59,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:13:59,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:13:59,173 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 229 [2022-07-13 22:13:59,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 202 transitions, 478 flow. Second operand has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:59,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:13:59,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 229 [2022-07-13 22:13:59,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:13:59,380 INFO L129 PetriNetUnfolder]: 123/934 cut-off events. [2022-07-13 22:13:59,380 INFO L130 PetriNetUnfolder]: For 321/323 co-relation queries the response was YES. [2022-07-13 22:13:59,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 934 events. 123/934 cut-off events. For 321/323 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4553 event pairs, 42 based on Foata normal form. 15/868 useless extension candidates. Maximal degree in co-relation 1469. Up to 198 conditions per place. [2022-07-13 22:13:59,386 INFO L132 encePairwiseOnDemand]: 221/229 looper letters, 55 selfloop transitions, 8 changer transitions 0/219 dead transitions. [2022-07-13 22:13:59,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 219 transitions, 660 flow [2022-07-13 22:13:59,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:13:59,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:13:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1300 transitions. [2022-07-13 22:13:59,389 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.810979413599501 [2022-07-13 22:13:59,390 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1300 transitions. [2022-07-13 22:13:59,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1300 transitions. [2022-07-13 22:13:59,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:13:59,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1300 transitions. [2022-07-13 22:13:59,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 185.71428571428572) internal successors, (1300), 7 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:59,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:59,396 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:59,396 INFO L186 Difference]: Start difference. First operand has 210 places, 202 transitions, 478 flow. Second operand 7 states and 1300 transitions. [2022-07-13 22:13:59,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 219 transitions, 660 flow [2022-07-13 22:13:59,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 219 transitions, 651 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-13 22:13:59,403 INFO L242 Difference]: Finished difference. Result has 215 places, 204 transitions, 499 flow [2022-07-13 22:13:59,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=499, PETRI_PLACES=215, PETRI_TRANSITIONS=204} [2022-07-13 22:13:59,405 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, 8 predicate places. [2022-07-13 22:13:59,405 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 204 transitions, 499 flow [2022-07-13 22:13:59,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:13:59,406 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:13:59,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:13:59,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:13:59,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:13:59,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:13:59,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1944528045, now seen corresponding path program 1 times [2022-07-13 22:13:59,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:13:59,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768058688] [2022-07-13 22:13:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:59,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:13:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:13:59,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:13:59,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768058688] [2022-07-13 22:13:59,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768058688] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:13:59,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336972341] [2022-07-13 22:13:59,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:13:59,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:13:59,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:13:59,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:13:59,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:13:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:13:59,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 22:13:59,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:14:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:14:00,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:14:00,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336972341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:14:00,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:14:00,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2022-07-13 22:14:00,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127970057] [2022-07-13 22:14:00,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:14:00,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:14:00,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:14:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:14:00,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:14:00,492 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 229 [2022-07-13 22:14:00,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 204 transitions, 499 flow. Second operand has 8 states, 8 states have (on average 188.25) internal successors, (1506), 8 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:00,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:14:00,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 229 [2022-07-13 22:14:00,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:14:03,296 INFO L129 PetriNetUnfolder]: 10899/19398 cut-off events. [2022-07-13 22:14:03,296 INFO L130 PetriNetUnfolder]: For 5859/5868 co-relation queries the response was YES. [2022-07-13 22:14:03,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40688 conditions, 19398 events. 10899/19398 cut-off events. For 5859/5868 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 157728 event pairs, 560 based on Foata normal form. 6/16061 useless extension candidates. Maximal degree in co-relation 40677. Up to 3210 conditions per place. [2022-07-13 22:14:03,466 INFO L132 encePairwiseOnDemand]: 217/229 looper letters, 182 selfloop transitions, 36 changer transitions 4/391 dead transitions. [2022-07-13 22:14:03,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 391 transitions, 1499 flow [2022-07-13 22:14:03,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 22:14:03,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 22:14:03,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3363 transitions. [2022-07-13 22:14:03,474 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8638582070382739 [2022-07-13 22:14:03,474 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3363 transitions. [2022-07-13 22:14:03,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3363 transitions. [2022-07-13 22:14:03,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:14:03,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3363 transitions. [2022-07-13 22:14:03,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 197.8235294117647) internal successors, (3363), 17 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:03,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 229.0) internal successors, (4122), 18 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:03,489 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 229.0) internal successors, (4122), 18 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:03,489 INFO L186 Difference]: Start difference. First operand has 215 places, 204 transitions, 499 flow. Second operand 17 states and 3363 transitions. [2022-07-13 22:14:03,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 391 transitions, 1499 flow [2022-07-13 22:14:03,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 391 transitions, 1487 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:14:03,499 INFO L242 Difference]: Finished difference. Result has 240 places, 236 transitions, 783 flow [2022-07-13 22:14:03,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=783, PETRI_PLACES=240, PETRI_TRANSITIONS=236} [2022-07-13 22:14:03,500 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, 33 predicate places. [2022-07-13 22:14:03,500 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 236 transitions, 783 flow [2022-07-13 22:14:03,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 188.25) internal successors, (1506), 8 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:03,501 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:14:03,501 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:14:03,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:14:03,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:14:03,724 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:14:03,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:14:03,725 INFO L85 PathProgramCache]: Analyzing trace with hash -2023161059, now seen corresponding path program 2 times [2022-07-13 22:14:03,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:14:03,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011738410] [2022-07-13 22:14:03,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:14:03,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:14:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:14:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:14:03,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:14:03,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011738410] [2022-07-13 22:14:03,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011738410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:14:03,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:14:03,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:14:03,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561219076] [2022-07-13 22:14:03,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:14:03,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:14:03,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:14:03,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:14:03,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:14:03,955 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-07-13 22:14:03,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 236 transitions, 783 flow. Second operand has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:03,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:14:03,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-07-13 22:14:03,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:14:06,063 INFO L129 PetriNetUnfolder]: 6322/14316 cut-off events. [2022-07-13 22:14:06,064 INFO L130 PetriNetUnfolder]: For 23528/23550 co-relation queries the response was YES. [2022-07-13 22:14:06,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38985 conditions, 14316 events. 6322/14316 cut-off events. For 23528/23550 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 133812 event pairs, 1597 based on Foata normal form. 54/13314 useless extension candidates. Maximal degree in co-relation 38961. Up to 5171 conditions per place. [2022-07-13 22:14:06,198 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 87 selfloop transitions, 26 changer transitions 17/301 dead transitions. [2022-07-13 22:14:06,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 301 transitions, 1328 flow [2022-07-13 22:14:06,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:14:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 22:14:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1587 transitions. [2022-07-13 22:14:06,203 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8662663755458515 [2022-07-13 22:14:06,203 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1587 transitions. [2022-07-13 22:14:06,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1587 transitions. [2022-07-13 22:14:06,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:14:06,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1587 transitions. [2022-07-13 22:14:06,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 198.375) internal successors, (1587), 8 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:06,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:06,213 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:06,213 INFO L186 Difference]: Start difference. First operand has 240 places, 236 transitions, 783 flow. Second operand 8 states and 1587 transitions. [2022-07-13 22:14:06,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 301 transitions, 1328 flow [2022-07-13 22:14:06,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 301 transitions, 1323 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:14:06,454 INFO L242 Difference]: Finished difference. Result has 249 places, 241 transitions, 909 flow [2022-07-13 22:14:06,454 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=909, PETRI_PLACES=249, PETRI_TRANSITIONS=241} [2022-07-13 22:14:06,456 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, 42 predicate places. [2022-07-13 22:14:06,456 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 241 transitions, 909 flow [2022-07-13 22:14:06,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:06,458 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:14:06,458 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:14:06,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:14:06,458 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:14:06,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:14:06,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1101149121, now seen corresponding path program 3 times [2022-07-13 22:14:06,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:14:06,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610376412] [2022-07-13 22:14:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:14:06,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:14:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:14:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:14:06,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:14:06,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610376412] [2022-07-13 22:14:06,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610376412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:14:06,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:14:06,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:14:06,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665277519] [2022-07-13 22:14:06,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:14:06,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:14:06,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:14:06,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:14:06,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:14:06,805 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-07-13 22:14:06,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 241 transitions, 909 flow. Second operand has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:06,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:14:06,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-07-13 22:14:06,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:14:09,097 INFO L129 PetriNetUnfolder]: 8097/17454 cut-off events. [2022-07-13 22:14:09,097 INFO L130 PetriNetUnfolder]: For 42096/42127 co-relation queries the response was YES. [2022-07-13 22:14:09,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51174 conditions, 17454 events. 8097/17454 cut-off events. For 42096/42127 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 166105 event pairs, 1787 based on Foata normal form. 260/16699 useless extension candidates. Maximal degree in co-relation 51147. Up to 5338 conditions per place. [2022-07-13 22:14:09,222 INFO L132 encePairwiseOnDemand]: 218/229 looper letters, 114 selfloop transitions, 48 changer transitions 7/340 dead transitions. [2022-07-13 22:14:09,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 340 transitions, 1787 flow [2022-07-13 22:14:09,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:14:09,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:14:09,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1805 transitions. [2022-07-13 22:14:09,227 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8757884522076662 [2022-07-13 22:14:09,227 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1805 transitions. [2022-07-13 22:14:09,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1805 transitions. [2022-07-13 22:14:09,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:14:09,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1805 transitions. [2022-07-13 22:14:09,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 200.55555555555554) internal successors, (1805), 9 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:09,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:09,236 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:09,236 INFO L186 Difference]: Start difference. First operand has 249 places, 241 transitions, 909 flow. Second operand 9 states and 1805 transitions. [2022-07-13 22:14:09,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 340 transitions, 1787 flow [2022-07-13 22:14:09,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 340 transitions, 1691 flow, removed 16 selfloop flow, removed 6 redundant places. [2022-07-13 22:14:09,598 INFO L242 Difference]: Finished difference. Result has 255 places, 265 transitions, 1244 flow [2022-07-13 22:14:09,599 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1244, PETRI_PLACES=255, PETRI_TRANSITIONS=265} [2022-07-13 22:14:09,600 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, 48 predicate places. [2022-07-13 22:14:09,600 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 265 transitions, 1244 flow [2022-07-13 22:14:09,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:09,601 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:14:09,601 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:14:09,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:14:09,601 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:14:09,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:14:09,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1717759755, now seen corresponding path program 4 times [2022-07-13 22:14:09,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:14:09,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805837107] [2022-07-13 22:14:09,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:14:09,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:14:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:14:09,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:14:09,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:14:09,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805837107] [2022-07-13 22:14:09,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805837107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:14:09,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:14:09,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:14:09,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475339215] [2022-07-13 22:14:09,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:14:09,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:14:09,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:14:09,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:14:09,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:14:09,890 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-07-13 22:14:09,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 265 transitions, 1244 flow. Second operand has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:09,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:14:09,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-07-13 22:14:09,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:14:12,739 INFO L129 PetriNetUnfolder]: 9091/18896 cut-off events. [2022-07-13 22:14:12,750 INFO L130 PetriNetUnfolder]: For 51160/51258 co-relation queries the response was YES. [2022-07-13 22:14:12,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60181 conditions, 18896 events. 9091/18896 cut-off events. For 51160/51258 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 178054 event pairs, 1598 based on Foata normal form. 304/18170 useless extension candidates. Maximal degree in co-relation 60151. Up to 5054 conditions per place. [2022-07-13 22:14:12,879 INFO L132 encePairwiseOnDemand]: 217/229 looper letters, 174 selfloop transitions, 73 changer transitions 6/424 dead transitions. [2022-07-13 22:14:12,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 424 transitions, 2567 flow [2022-07-13 22:14:12,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:14:12,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:14:12,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2793 transitions. [2022-07-13 22:14:12,885 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.87117903930131 [2022-07-13 22:14:12,885 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2793 transitions. [2022-07-13 22:14:12,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2793 transitions. [2022-07-13 22:14:12,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:14:12,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2793 transitions. [2022-07-13 22:14:12,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 199.5) internal successors, (2793), 14 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:12,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 229.0) internal successors, (3435), 15 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) [2022-07-13 22:14:12,898 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 229.0) internal successors, (3435), 15 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) [2022-07-13 22:14:12,898 INFO L186 Difference]: Start difference. First operand has 255 places, 265 transitions, 1244 flow. Second operand 14 states and 2793 transitions. [2022-07-13 22:14:12,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 424 transitions, 2567 flow [2022-07-13 22:14:13,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 424 transitions, 2540 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 22:14:13,159 INFO L242 Difference]: Finished difference. Result has 272 places, 297 transitions, 1741 flow [2022-07-13 22:14:13,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1741, PETRI_PLACES=272, PETRI_TRANSITIONS=297} [2022-07-13 22:14:13,160 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, 65 predicate places. [2022-07-13 22:14:13,160 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 297 transitions, 1741 flow [2022-07-13 22:14:13,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:13,161 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:14:13,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:14:13,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:14:13,161 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:14:13,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:14:13,162 INFO L85 PathProgramCache]: Analyzing trace with hash -348106087, now seen corresponding path program 5 times [2022-07-13 22:14:13,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:14:13,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770476804] [2022-07-13 22:14:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:14:13,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:14:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:14:13,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:14:13,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:14:13,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770476804] [2022-07-13 22:14:13,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770476804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:14:13,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:14:13,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:14:13,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015124321] [2022-07-13 22:14:13,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:14:13,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:14:13,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:14:13,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:14:13,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:14:13,390 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-07-13 22:14:13,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 297 transitions, 1741 flow. Second operand has 7 states, 7 states have (on average 190.42857142857142) internal successors, (1333), 7 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:13,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:14:13,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-07-13 22:14:13,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:14:16,228 INFO L129 PetriNetUnfolder]: 9173/20157 cut-off events. [2022-07-13 22:14:16,228 INFO L130 PetriNetUnfolder]: For 71913/71968 co-relation queries the response was YES. [2022-07-13 22:14:16,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69513 conditions, 20157 events. 9173/20157 cut-off events. For 71913/71968 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 199742 event pairs, 2500 based on Foata normal form. 111/18969 useless extension candidates. Maximal degree in co-relation 69476. Up to 7545 conditions per place. [2022-07-13 22:14:16,512 INFO L132 encePairwiseOnDemand]: 218/229 looper letters, 143 selfloop transitions, 47 changer transitions 19/380 dead transitions. [2022-07-13 22:14:16,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 380 transitions, 2596 flow [2022-07-13 22:14:16,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:14:16,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:14:16,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1994 transitions. [2022-07-13 22:14:16,517 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8707423580786027 [2022-07-13 22:14:16,517 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1994 transitions. [2022-07-13 22:14:16,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1994 transitions. [2022-07-13 22:14:16,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:14:16,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1994 transitions. [2022-07-13 22:14:16,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 199.4) internal successors, (1994), 10 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:16,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 229.0) internal successors, (2519), 11 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:16,526 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 229.0) internal successors, (2519), 11 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:16,526 INFO L186 Difference]: Start difference. First operand has 272 places, 297 transitions, 1741 flow. Second operand 10 states and 1994 transitions. [2022-07-13 22:14:16,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 380 transitions, 2596 flow [2022-07-13 22:14:16,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 380 transitions, 2548 flow, removed 24 selfloop flow, removed 0 redundant places. [2022-07-13 22:14:16,813 INFO L242 Difference]: Finished difference. Result has 286 places, 301 transitions, 1870 flow [2022-07-13 22:14:16,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1870, PETRI_PLACES=286, PETRI_TRANSITIONS=301} [2022-07-13 22:14:16,814 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, 79 predicate places. [2022-07-13 22:14:16,814 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 301 transitions, 1870 flow [2022-07-13 22:14:16,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 190.42857142857142) internal successors, (1333), 7 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:16,815 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:14:16,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:14:16,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:14:16,816 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:14:16,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:14:16,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1625847497, now seen corresponding path program 6 times [2022-07-13 22:14:16,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:14:16,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224069] [2022-07-13 22:14:16,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:14:16,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:14:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:14:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:14:17,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:14:17,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224069] [2022-07-13 22:14:17,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:14:17,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:14:17,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:14:17,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061506695] [2022-07-13 22:14:17,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:14:17,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:14:17,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:14:17,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:14:17,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:14:17,099 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-07-13 22:14:17,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 301 transitions, 1870 flow. Second operand has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:17,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:14:17,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-07-13 22:14:17,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:14:19,442 INFO L129 PetriNetUnfolder]: 7600/15791 cut-off events. [2022-07-13 22:14:19,442 INFO L130 PetriNetUnfolder]: For 62016/62164 co-relation queries the response was YES. [2022-07-13 22:14:19,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57863 conditions, 15791 events. 7600/15791 cut-off events. For 62016/62164 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 144275 event pairs, 1855 based on Foata normal form. 96/15175 useless extension candidates. Maximal degree in co-relation 57820. Up to 6951 conditions per place. [2022-07-13 22:14:19,562 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 119 selfloop transitions, 38 changer transitions 16/343 dead transitions. [2022-07-13 22:14:19,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 343 transitions, 2387 flow [2022-07-13 22:14:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:14:19,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:14:19,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1398 transitions. [2022-07-13 22:14:19,566 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8721147847785402 [2022-07-13 22:14:19,566 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1398 transitions. [2022-07-13 22:14:19,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1398 transitions. [2022-07-13 22:14:19,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:14:19,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1398 transitions. [2022-07-13 22:14:19,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.71428571428572) internal successors, (1398), 7 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:19,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:19,572 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:19,572 INFO L186 Difference]: Start difference. First operand has 286 places, 301 transitions, 1870 flow. Second operand 7 states and 1398 transitions. [2022-07-13 22:14:19,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 343 transitions, 2387 flow [2022-07-13 22:14:19,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 343 transitions, 2295 flow, removed 7 selfloop flow, removed 8 redundant places. [2022-07-13 22:14:19,784 INFO L242 Difference]: Finished difference. Result has 282 places, 291 transitions, 1727 flow [2022-07-13 22:14:19,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1676, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1727, PETRI_PLACES=282, PETRI_TRANSITIONS=291} [2022-07-13 22:14:19,784 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, 75 predicate places. [2022-07-13 22:14:19,785 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 291 transitions, 1727 flow [2022-07-13 22:14:19,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:19,785 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:14:19,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:14:19,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 22:14:19,786 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:14:19,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:14:19,786 INFO L85 PathProgramCache]: Analyzing trace with hash -214597505, now seen corresponding path program 1 times [2022-07-13 22:14:19,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:14:19,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693995545] [2022-07-13 22:14:19,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:14:19,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:14:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:14:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:14:20,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:14:20,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693995545] [2022-07-13 22:14:20,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693995545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:14:20,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:14:20,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:14:20,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939385564] [2022-07-13 22:14:20,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:14:20,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:14:20,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:14:20,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:14:20,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:14:20,013 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-07-13 22:14:20,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 291 transitions, 1727 flow. Second operand has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:20,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:14:20,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-07-13 22:14:20,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:14:22,289 INFO L129 PetriNetUnfolder]: 6765/13539 cut-off events. [2022-07-13 22:14:22,290 INFO L130 PetriNetUnfolder]: For 55644/55712 co-relation queries the response was YES. [2022-07-13 22:14:22,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49254 conditions, 13539 events. 6765/13539 cut-off events. For 55644/55712 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 116608 event pairs, 1459 based on Foata normal form. 151/12895 useless extension candidates. Maximal degree in co-relation 49213. Up to 4845 conditions per place. [2022-07-13 22:14:22,397 INFO L132 encePairwiseOnDemand]: 218/229 looper letters, 147 selfloop transitions, 73 changer transitions 0/390 dead transitions. [2022-07-13 22:14:22,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 390 transitions, 2712 flow [2022-07-13 22:14:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:14:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-13 22:14:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2379 transitions. [2022-07-13 22:14:22,402 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8657205240174672 [2022-07-13 22:14:22,403 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2379 transitions. [2022-07-13 22:14:22,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2379 transitions. [2022-07-13 22:14:22,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:14:22,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2379 transitions. [2022-07-13 22:14:22,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 198.25) internal successors, (2379), 12 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:22,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:22,413 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:22,413 INFO L186 Difference]: Start difference. First operand has 282 places, 291 transitions, 1727 flow. Second operand 12 states and 2379 transitions. [2022-07-13 22:14:22,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 390 transitions, 2712 flow [2022-07-13 22:14:22,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 390 transitions, 2507 flow, removed 35 selfloop flow, removed 11 redundant places. [2022-07-13 22:14:22,563 INFO L242 Difference]: Finished difference. Result has 284 places, 309 transitions, 1926 flow [2022-07-13 22:14:22,564 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1926, PETRI_PLACES=284, PETRI_TRANSITIONS=309} [2022-07-13 22:14:22,565 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, 77 predicate places. [2022-07-13 22:14:22,565 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 309 transitions, 1926 flow [2022-07-13 22:14:22,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:22,565 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:14:22,566 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:14:22,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:14:22,566 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:14:22,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:14:22,567 INFO L85 PathProgramCache]: Analyzing trace with hash 460397547, now seen corresponding path program 2 times [2022-07-13 22:14:22,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:14:22,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507664047] [2022-07-13 22:14:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:14:22,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:14:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:14:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:14:22,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:14:22,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507664047] [2022-07-13 22:14:22,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507664047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:14:22,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:14:22,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:14:22,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806490071] [2022-07-13 22:14:22,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:14:22,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:14:22,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:14:22,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:14:22,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:14:22,767 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-07-13 22:14:22,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 309 transitions, 1926 flow. Second operand has 7 states, 7 states have (on average 190.42857142857142) internal successors, (1333), 7 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:22,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:14:22,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-07-13 22:14:22,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:14:24,971 INFO L129 PetriNetUnfolder]: 7049/14491 cut-off events. [2022-07-13 22:14:24,971 INFO L130 PetriNetUnfolder]: For 64410/64443 co-relation queries the response was YES. [2022-07-13 22:14:25,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54939 conditions, 14491 events. 7049/14491 cut-off events. For 64410/64443 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 131329 event pairs, 2057 based on Foata normal form. 142/14017 useless extension candidates. Maximal degree in co-relation 54897. Up to 5533 conditions per place. [2022-07-13 22:14:25,107 INFO L132 encePairwiseOnDemand]: 221/229 looper letters, 154 selfloop transitions, 57 changer transitions 0/381 dead transitions. [2022-07-13 22:14:25,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 381 transitions, 2911 flow [2022-07-13 22:14:25,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:14:25,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 22:14:25,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1587 transitions. [2022-07-13 22:14:25,110 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8662663755458515 [2022-07-13 22:14:25,110 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1587 transitions. [2022-07-13 22:14:25,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1587 transitions. [2022-07-13 22:14:25,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:14:25,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1587 transitions. [2022-07-13 22:14:25,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 198.375) internal successors, (1587), 8 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:25,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:25,117 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:25,117 INFO L186 Difference]: Start difference. First operand has 284 places, 309 transitions, 1926 flow. Second operand 8 states and 1587 transitions. [2022-07-13 22:14:25,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 381 transitions, 2911 flow [2022-07-13 22:14:25,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 381 transitions, 2840 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-07-13 22:14:25,334 INFO L242 Difference]: Finished difference. Result has 290 places, 323 transitions, 2223 flow [2022-07-13 22:14:25,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2223, PETRI_PLACES=290, PETRI_TRANSITIONS=323} [2022-07-13 22:14:25,336 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, 83 predicate places. [2022-07-13 22:14:25,336 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 323 transitions, 2223 flow [2022-07-13 22:14:25,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 190.42857142857142) internal successors, (1333), 7 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:25,336 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:14:25,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:14:25,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 22:14:25,337 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:14:25,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:14:25,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1579086939, now seen corresponding path program 3 times [2022-07-13 22:14:25,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:14:25,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109183669] [2022-07-13 22:14:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:14:25,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:14:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:14:25,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:14:25,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:14:25,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109183669] [2022-07-13 22:14:25,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109183669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:14:25,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:14:25,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:14:25,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791850554] [2022-07-13 22:14:25,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:14:25,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:14:25,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:14:25,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:14:25,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:14:25,586 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-07-13 22:14:25,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 323 transitions, 2223 flow. Second operand has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:25,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:14:25,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-07-13 22:14:25,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:14:28,109 INFO L129 PetriNetUnfolder]: 7734/15870 cut-off events. [2022-07-13 22:14:28,109 INFO L130 PetriNetUnfolder]: For 78490/78543 co-relation queries the response was YES. [2022-07-13 22:14:28,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62231 conditions, 15870 events. 7734/15870 cut-off events. For 78490/78543 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 146640 event pairs, 2157 based on Foata normal form. 146/15428 useless extension candidates. Maximal degree in co-relation 62186. Up to 5630 conditions per place. [2022-07-13 22:14:28,228 INFO L132 encePairwiseOnDemand]: 219/229 looper letters, 150 selfloop transitions, 70 changer transitions 0/390 dead transitions. [2022-07-13 22:14:28,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 390 transitions, 3093 flow [2022-07-13 22:14:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:14:28,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:14:28,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1784 transitions. [2022-07-13 22:14:28,231 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8655992236778263 [2022-07-13 22:14:28,232 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1784 transitions. [2022-07-13 22:14:28,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1784 transitions. [2022-07-13 22:14:28,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:14:28,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1784 transitions. [2022-07-13 22:14:28,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 198.22222222222223) internal successors, (1784), 9 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:28,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:28,238 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:28,238 INFO L186 Difference]: Start difference. First operand has 290 places, 323 transitions, 2223 flow. Second operand 9 states and 1784 transitions. [2022-07-13 22:14:28,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 390 transitions, 3093 flow [2022-07-13 22:14:28,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 390 transitions, 3046 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-13 22:14:28,502 INFO L242 Difference]: Finished difference. Result has 299 places, 335 transitions, 2508 flow [2022-07-13 22:14:28,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=2185, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2508, PETRI_PLACES=299, PETRI_TRANSITIONS=335} [2022-07-13 22:14:28,503 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, 92 predicate places. [2022-07-13 22:14:28,503 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 335 transitions, 2508 flow [2022-07-13 22:14:28,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:28,503 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:14:28,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:14:28,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:14:28,504 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:14:28,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:14:28,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1553176449, now seen corresponding path program 4 times [2022-07-13 22:14:28,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:14:28,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937273881] [2022-07-13 22:14:28,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:14:28,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:14:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:14:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:14:28,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:14:28,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937273881] [2022-07-13 22:14:28,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937273881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:14:28,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:14:28,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:14:28,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587623497] [2022-07-13 22:14:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:14:28,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:14:28,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:14:28,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:14:28,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:14:28,727 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2022-07-13 22:14:28,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 335 transitions, 2508 flow. Second operand has 9 states, 9 states have (on average 186.11111111111111) internal successors, (1675), 9 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:28,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:14:28,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2022-07-13 22:14:28,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:14:34,111 INFO L129 PetriNetUnfolder]: 16467/31751 cut-off events. [2022-07-13 22:14:34,111 INFO L130 PetriNetUnfolder]: For 195981/196091 co-relation queries the response was YES. [2022-07-13 22:14:34,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135554 conditions, 31751 events. 16467/31751 cut-off events. For 195981/196091 co-relation queries the response was YES. Maximal size of possible extension queue 1453. Compared 305332 event pairs, 4702 based on Foata normal form. 164/29445 useless extension candidates. Maximal degree in co-relation 135506. Up to 8541 conditions per place. [2022-07-13 22:14:34,678 INFO L132 encePairwiseOnDemand]: 218/229 looper letters, 256 selfloop transitions, 234 changer transitions 0/661 dead transitions. [2022-07-13 22:14:34,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 661 transitions, 8231 flow [2022-07-13 22:14:34,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:14:34,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-13 22:14:34,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2313 transitions. [2022-07-13 22:14:34,682 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8417030567685589 [2022-07-13 22:14:34,682 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2313 transitions. [2022-07-13 22:14:34,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2313 transitions. [2022-07-13 22:14:34,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:14:34,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2313 transitions. [2022-07-13 22:14:34,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 192.75) internal successors, (2313), 12 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:34,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:34,690 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:34,690 INFO L186 Difference]: Start difference. First operand has 299 places, 335 transitions, 2508 flow. Second operand 12 states and 2313 transitions. [2022-07-13 22:14:34,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 661 transitions, 8231 flow [2022-07-13 22:14:36,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 661 transitions, 7891 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-07-13 22:14:36,037 INFO L242 Difference]: Finished difference. Result has 313 places, 517 transitions, 6260 flow [2022-07-13 22:14:36,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=2422, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6260, PETRI_PLACES=313, PETRI_TRANSITIONS=517} [2022-07-13 22:14:36,038 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, 106 predicate places. [2022-07-13 22:14:36,038 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 517 transitions, 6260 flow [2022-07-13 22:14:36,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 186.11111111111111) internal successors, (1675), 9 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:36,039 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:14:36,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:14:36,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 22:14:36,039 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:14:36,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:14:36,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1529659223, now seen corresponding path program 5 times [2022-07-13 22:14:36,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:14:36,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485263171] [2022-07-13 22:14:36,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:14:36,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:14:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:14:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:14:36,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:14:36,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485263171] [2022-07-13 22:14:36,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485263171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:14:36,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:14:36,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:14:36,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656107927] [2022-07-13 22:14:36,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:14:36,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:14:36,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:14:36,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:14:36,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:14:36,245 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-07-13 22:14:36,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 517 transitions, 6260 flow. Second operand has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:36,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:14:36,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-07-13 22:14:36,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:14:41,003 INFO L129 PetriNetUnfolder]: 12918/26553 cut-off events. [2022-07-13 22:14:41,003 INFO L130 PetriNetUnfolder]: For 194162/194277 co-relation queries the response was YES. [2022-07-13 22:14:41,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120272 conditions, 26553 events. 12918/26553 cut-off events. For 194162/194277 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 261872 event pairs, 2450 based on Foata normal form. 242/26139 useless extension candidates. Maximal degree in co-relation 120217. Up to 7690 conditions per place. [2022-07-13 22:14:41,268 INFO L132 encePairwiseOnDemand]: 220/229 looper letters, 168 selfloop transitions, 269 changer transitions 3/608 dead transitions. [2022-07-13 22:14:41,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 608 transitions, 7890 flow [2022-07-13 22:14:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:14:41,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:14:41,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2161 transitions. [2022-07-13 22:14:41,274 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8578801111552203 [2022-07-13 22:14:41,274 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2161 transitions. [2022-07-13 22:14:41,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2161 transitions. [2022-07-13 22:14:41,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:14:41,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2161 transitions. [2022-07-13 22:14:41,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 196.45454545454547) internal successors, (2161), 11 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:41,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:41,280 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:41,280 INFO L186 Difference]: Start difference. First operand has 313 places, 517 transitions, 6260 flow. Second operand 11 states and 2161 transitions. [2022-07-13 22:14:41,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 608 transitions, 7890 flow [2022-07-13 22:14:42,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 608 transitions, 7674 flow, removed 30 selfloop flow, removed 2 redundant places. [2022-07-13 22:14:42,655 INFO L242 Difference]: Finished difference. Result has 323 places, 534 transitions, 6972 flow [2022-07-13 22:14:42,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=6084, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6972, PETRI_PLACES=323, PETRI_TRANSITIONS=534} [2022-07-13 22:14:42,656 INFO L279 CegarLoopForPetriNet]: 207 programPoint places, 116 predicate places. [2022-07-13 22:14:42,656 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 534 transitions, 6972 flow [2022-07-13 22:14:42,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:42,656 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:14:42,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:14:42,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 22:14:42,657 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 22:14:42,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:14:42,658 INFO L85 PathProgramCache]: Analyzing trace with hash -237473953, now seen corresponding path program 1 times [2022-07-13 22:14:42,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:14:42,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684867195] [2022-07-13 22:14:42,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:14:42,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:14:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:14:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 22:14:42,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:14:42,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684867195] [2022-07-13 22:14:42,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684867195] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:14:42,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841138725] [2022-07-13 22:14:42,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:14:42,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:14:42,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:14:42,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:14:42,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:14:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:14:42,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 22:14:42,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:14:43,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 22:14:43,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:14:43,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841138725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:14:43,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:14:43,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 9 [2022-07-13 22:14:43,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073761151] [2022-07-13 22:14:43,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:14:43,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:14:43,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:14:43,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:14:43,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:14:43,136 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 229 [2022-07-13 22:14:43,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 534 transitions, 6972 flow. Second operand has 7 states, 7 states have (on average 188.14285714285714) internal successors, (1317), 7 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 22:14:43,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:14:43,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 229 [2022-07-13 22:14:43,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand