./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/parallel-barrier.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.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 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:28:42,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:28:42,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:28:42,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:28:42,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:28:42,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:28:42,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:28:42,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:28:42,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:28:42,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:28:42,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:28:42,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:28:42,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:28:42,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:28:42,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:28:42,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:28:42,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:28:42,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:28:42,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:28:42,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:28:42,087 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:28:42,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:28:42,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:28:42,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:28:42,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:28:42,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:28:42,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:28:42,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:28:42,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:28:42,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:28:42,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:28:42,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:28:42,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:28:42,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:28:42,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:28:42,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:28:42,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:28:42,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:28:42,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:28:42,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:28:42,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:28:42,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:28:42,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:28:42,123 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:28:42,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:28:42,126 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:28:42,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:28:42,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:28:42,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:28:42,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:28:42,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:28:42,128 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:28:42,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:28:42,129 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:28:42,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:28:42,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:28:42,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:28:42,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:28:42,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:28:42,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:28:42,130 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:28:42,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:28:42,130 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:28:42,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:28:42,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:28:42,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:28:42,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:28:42,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:28:42,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:28:42,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:28:42,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:28:42,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:28:42,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:28:42,133 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:28:42,133 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:28:42,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:28:42,133 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 [2022-07-19 21:28:42,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:28:42,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:28:42,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:28:42,397 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:28:42,398 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:28:42,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-07-19 21:28:42,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f32f81a04/cf80f02e60c04086955cfa9a8d196411/FLAG6bfac26d5 [2022-07-19 21:28:42,905 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:28:42,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-07-19 21:28:42,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f32f81a04/cf80f02e60c04086955cfa9a8d196411/FLAG6bfac26d5 [2022-07-19 21:28:43,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f32f81a04/cf80f02e60c04086955cfa9a8d196411 [2022-07-19 21:28:43,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:28:43,308 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:28:43,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:28:43,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:28:43,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:28:43,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:28:43" (1/1) ... [2022-07-19 21:28:43,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c6a5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:28:43, skipping insertion in model container [2022-07-19 21:28:43,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:28:43" (1/1) ... [2022-07-19 21:28:43,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:28:43,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:28:43,559 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/parallel-barrier.wvr.c[4722,4735] [2022-07-19 21:28:43,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:28:43,570 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:28:43,598 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/parallel-barrier.wvr.c[4722,4735] [2022-07-19 21:28:43,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:28:43,615 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:28:43,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:28:43 WrapperNode [2022-07-19 21:28:43,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:28:43,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:28:43,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:28:43,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:28:43,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:28:43" (1/1) ... [2022-07-19 21:28:43,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:28:43" (1/1) ... [2022-07-19 21:28:43,687 INFO L137 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 253 [2022-07-19 21:28:43,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:28:43,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:28:43,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:28:43,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:28:43,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:28:43" (1/1) ... [2022-07-19 21:28:43,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:28:43" (1/1) ... [2022-07-19 21:28:43,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:28:43" (1/1) ... [2022-07-19 21:28:43,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:28:43" (1/1) ... [2022-07-19 21:28:43,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:28:43" (1/1) ... [2022-07-19 21:28:43,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:28:43" (1/1) ... [2022-07-19 21:28:43,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:28:43" (1/1) ... [2022-07-19 21:28:43,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:28:43,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:28:43,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:28:43,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:28:43,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:28:43" (1/1) ... [2022-07-19 21:28:43,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:28:43,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:28:43,755 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) [2022-07-19 21:28:43,767 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 [2022-07-19 21:28:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:28:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:28:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:28:43,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:28:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:28:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:28:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:28:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:28:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:28:43,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:28:43,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-19 21:28:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-19 21:28:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:28:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-07-19 21:28:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-07-19 21:28:43,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-07-19 21:28:43,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-07-19 21:28:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:28:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:28:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:28:43,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:28:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:28:43,801 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:28:43,898 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:28:43,900 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:28:44,368 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:28:44,416 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:28:44,416 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:28:44,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:28:44 BoogieIcfgContainer [2022-07-19 21:28:44,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:28:44,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:28:44,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:28:44,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:28:44,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:28:43" (1/3) ... [2022-07-19 21:28:44,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcbfb5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:28:44, skipping insertion in model container [2022-07-19 21:28:44,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:28:43" (2/3) ... [2022-07-19 21:28:44,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcbfb5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:28:44, skipping insertion in model container [2022-07-19 21:28:44,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:28:44" (3/3) ... [2022-07-19 21:28:44,429 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2022-07-19 21:28:44,434 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:28:44,441 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:28:44,442 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:28:44,442 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:28:44,580 INFO L135 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-07-19 21:28:44,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 246 places, 235 transitions, 542 flow [2022-07-19 21:28:44,738 INFO L129 PetriNetUnfolder]: 8/207 cut-off events. [2022-07-19 21:28:44,739 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-19 21:28:44,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 207 events. 8/207 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 241 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 177. Up to 3 conditions per place. [2022-07-19 21:28:44,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 235 transitions, 542 flow [2022-07-19 21:28:44,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 198 transitions, 444 flow [2022-07-19 21:28:44,775 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:28:44,781 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@9225714, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4f36fdfa [2022-07-19 21:28:44,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-07-19 21:28:44,871 INFO L129 PetriNetUnfolder]: 8/197 cut-off events. [2022-07-19 21:28:44,872 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-19 21:28:44,873 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:44,873 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] [2022-07-19 21:28:44,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-19 21:28:44,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:44,880 INFO L85 PathProgramCache]: Analyzing trace with hash -436231963, now seen corresponding path program 1 times [2022-07-19 21:28:44,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:44,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613847324] [2022-07-19 21:28:44,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:44,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:45,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:45,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613847324] [2022-07-19 21:28:45,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613847324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:45,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:45,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:28:45,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804017031] [2022-07-19 21:28:45,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:45,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:28:45,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:45,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:28:45,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:28:45,406 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-07-19 21:28:45,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 198 transitions, 444 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:45,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:45,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-07-19 21:28:45,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:45,907 INFO L129 PetriNetUnfolder]: 354/1315 cut-off events. [2022-07-19 21:28:45,907 INFO L130 PetriNetUnfolder]: For 424/424 co-relation queries the response was YES. [2022-07-19 21:28:45,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2287 conditions, 1315 events. 354/1315 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 7852 event pairs, 170 based on Foata normal form. 41/1228 useless extension candidates. Maximal degree in co-relation 2051. Up to 365 conditions per place. [2022-07-19 21:28:45,925 INFO L132 encePairwiseOnDemand]: 228/239 looper letters, 49 selfloop transitions, 6 changer transitions 3/222 dead transitions. [2022-07-19 21:28:45,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 222 transitions, 670 flow [2022-07-19 21:28:45,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:28:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:28:45,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1054 transitions. [2022-07-19 21:28:45,948 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8820083682008368 [2022-07-19 21:28:45,949 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1054 transitions. [2022-07-19 21:28:45,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1054 transitions. [2022-07-19 21:28:45,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:45,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1054 transitions. [2022-07-19 21:28:45,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.8) internal successors, (1054), 5 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:45,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:45,971 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:45,973 INFO L186 Difference]: Start difference. First operand has 209 places, 198 transitions, 444 flow. Second operand 5 states and 1054 transitions. [2022-07-19 21:28:45,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 222 transitions, 670 flow [2022-07-19 21:28:45,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 222 transitions, 594 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-07-19 21:28:45,988 INFO L242 Difference]: Finished difference. Result has 202 places, 191 transitions, 416 flow [2022-07-19 21:28:45,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=416, PETRI_PLACES=202, PETRI_TRANSITIONS=191} [2022-07-19 21:28:45,994 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, -7 predicate places. [2022-07-19 21:28:45,995 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 191 transitions, 416 flow [2022-07-19 21:28:45,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:45,996 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:46,006 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] [2022-07-19 21:28:46,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:28:46,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-19 21:28:46,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:46,007 INFO L85 PathProgramCache]: Analyzing trace with hash -593111343, now seen corresponding path program 2 times [2022-07-19 21:28:46,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:46,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442270994] [2022-07-19 21:28:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:46,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:46,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:46,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442270994] [2022-07-19 21:28:46,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442270994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:46,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:46,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:28:46,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161926860] [2022-07-19 21:28:46,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:46,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:28:46,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:46,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:28:46,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:28:46,343 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-07-19 21:28:46,344 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 191 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:46,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:46,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-07-19 21:28:46,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:46,612 INFO L129 PetriNetUnfolder]: 300/1198 cut-off events. [2022-07-19 21:28:46,613 INFO L130 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2022-07-19 21:28:46,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1829 conditions, 1198 events. 300/1198 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6862 event pairs, 128 based on Foata normal form. 22/1098 useless extension candidates. Maximal degree in co-relation 1402. Up to 289 conditions per place. [2022-07-19 21:28:46,624 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 48 selfloop transitions, 6 changer transitions 1/218 dead transitions. [2022-07-19 21:28:46,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 218 transitions, 607 flow [2022-07-19 21:28:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:28:46,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:28:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-07-19 21:28:46,628 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8753138075313808 [2022-07-19 21:28:46,628 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-07-19 21:28:46,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-07-19 21:28:46,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:46,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-07-19 21:28:46,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:46,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:46,634 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:46,635 INFO L186 Difference]: Start difference. First operand has 202 places, 191 transitions, 416 flow. Second operand 5 states and 1046 transitions. [2022-07-19 21:28:46,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 218 transitions, 607 flow [2022-07-19 21:28:46,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 218 transitions, 595 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:28:46,646 INFO L242 Difference]: Finished difference. Result has 200 places, 190 transitions, 420 flow [2022-07-19 21:28:46,646 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2022-07-19 21:28:46,647 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, -9 predicate places. [2022-07-19 21:28:46,647 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 420 flow [2022-07-19 21:28:46,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:46,648 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:46,648 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] [2022-07-19 21:28:46,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:28:46,649 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-19 21:28:46,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:46,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2021275627, now seen corresponding path program 1 times [2022-07-19 21:28:46,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:46,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10549004] [2022-07-19 21:28:46,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:46,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:46,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:46,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:46,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10549004] [2022-07-19 21:28:46,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10549004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:46,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:46,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:28:46,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652886998] [2022-07-19 21:28:46,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:46,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:28:46,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:46,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:28:46,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:28:46,985 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 239 [2022-07-19 21:28:46,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 420 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:46,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:46,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 239 [2022-07-19 21:28:46,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:47,239 INFO L129 PetriNetUnfolder]: 311/1167 cut-off events. [2022-07-19 21:28:47,240 INFO L130 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-07-19 21:28:47,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1900 conditions, 1167 events. 311/1167 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6695 event pairs, 141 based on Foata normal form. 11/1085 useless extension candidates. Maximal degree in co-relation 1581. Up to 327 conditions per place. [2022-07-19 21:28:47,251 INFO L132 encePairwiseOnDemand]: 232/239 looper letters, 49 selfloop transitions, 6 changer transitions 0/218 dead transitions. [2022-07-19 21:28:47,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 218 transitions, 614 flow [2022-07-19 21:28:47,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:28:47,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:28:47,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-07-19 21:28:47,255 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8753138075313808 [2022-07-19 21:28:47,255 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-07-19 21:28:47,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-07-19 21:28:47,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:47,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-07-19 21:28:47,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:47,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:47,261 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:47,261 INFO L186 Difference]: Start difference. First operand has 200 places, 190 transitions, 420 flow. Second operand 5 states and 1046 transitions. [2022-07-19 21:28:47,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 218 transitions, 614 flow [2022-07-19 21:28:47,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 218 transitions, 602 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:28:47,270 INFO L242 Difference]: Finished difference. Result has 200 places, 190 transitions, 426 flow [2022-07-19 21:28:47,270 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2022-07-19 21:28:47,272 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, -9 predicate places. [2022-07-19 21:28:47,273 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 426 flow [2022-07-19 21:28:47,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:47,274 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:47,274 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] [2022-07-19 21:28:47,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:28:47,274 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-19 21:28:47,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:47,275 INFO L85 PathProgramCache]: Analyzing trace with hash 989998079, now seen corresponding path program 2 times [2022-07-19 21:28:47,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:47,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660324563] [2022-07-19 21:28:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:47,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:48,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:48,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660324563] [2022-07-19 21:28:48,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660324563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:48,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:48,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-19 21:28:48,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190343313] [2022-07-19 21:28:48,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:48,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:28:48,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:48,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:28:48,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:28:48,059 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-07-19 21:28:48,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 426 flow. Second operand has 21 states, 21 states have (on average 165.71428571428572) internal successors, (3480), 21 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:48,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:48,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-07-19 21:28:48,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:52,132 INFO L129 PetriNetUnfolder]: 5258/9715 cut-off events. [2022-07-19 21:28:52,132 INFO L130 PetriNetUnfolder]: For 1673/1673 co-relation queries the response was YES. [2022-07-19 21:28:52,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18897 conditions, 9715 events. 5258/9715 cut-off events. For 1673/1673 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 69625 event pairs, 802 based on Foata normal form. 2/8918 useless extension candidates. Maximal degree in co-relation 18044. Up to 3952 conditions per place. [2022-07-19 21:28:52,245 INFO L132 encePairwiseOnDemand]: 216/239 looper letters, 222 selfloop transitions, 105 changer transitions 31/487 dead transitions. [2022-07-19 21:28:52,246 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 487 transitions, 1894 flow [2022-07-19 21:28:52,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 21:28:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-19 21:28:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 6065 transitions. [2022-07-19 21:28:52,263 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7250448296473401 [2022-07-19 21:28:52,263 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 6065 transitions. [2022-07-19 21:28:52,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 6065 transitions. [2022-07-19 21:28:52,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:52,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 6065 transitions. [2022-07-19 21:28:52,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 173.28571428571428) internal successors, (6065), 35 states have internal predecessors, (6065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:52,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 239.0) internal successors, (8604), 36 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:52,325 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 239.0) internal successors, (8604), 36 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:52,326 INFO L186 Difference]: Start difference. First operand has 200 places, 190 transitions, 426 flow. Second operand 35 states and 6065 transitions. [2022-07-19 21:28:52,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 487 transitions, 1894 flow [2022-07-19 21:28:52,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 487 transitions, 1866 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:28:52,335 INFO L242 Difference]: Finished difference. Result has 251 places, 296 transitions, 1012 flow [2022-07-19 21:28:52,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1012, PETRI_PLACES=251, PETRI_TRANSITIONS=296} [2022-07-19 21:28:52,337 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 42 predicate places. [2022-07-19 21:28:52,337 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 296 transitions, 1012 flow [2022-07-19 21:28:52,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 165.71428571428572) internal successors, (3480), 21 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:52,339 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:52,339 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:52,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:28:52,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-19 21:28:52,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:52,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1568437147, now seen corresponding path program 3 times [2022-07-19 21:28:52,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:52,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486323376] [2022-07-19 21:28:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:52,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:52,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:52,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:52,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486323376] [2022-07-19 21:28:52,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486323376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:52,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:52,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:28:52,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113610134] [2022-07-19 21:28:52,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:52,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:28:52,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:52,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:28:52,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:28:52,539 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 239 [2022-07-19 21:28:52,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 296 transitions, 1012 flow. Second operand has 6 states, 6 states have (on average 199.33333333333334) internal successors, (1196), 6 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:52,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:52,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 239 [2022-07-19 21:28:52,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:53,196 INFO L129 PetriNetUnfolder]: 1428/3922 cut-off events. [2022-07-19 21:28:53,197 INFO L130 PetriNetUnfolder]: For 2141/2160 co-relation queries the response was YES. [2022-07-19 21:28:53,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7851 conditions, 3922 events. 1428/3922 cut-off events. For 2141/2160 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 30082 event pairs, 482 based on Foata normal form. 44/3378 useless extension candidates. Maximal degree in co-relation 7819. Up to 1041 conditions per place. [2022-07-19 21:28:53,245 INFO L132 encePairwiseOnDemand]: 231/239 looper letters, 51 selfloop transitions, 7 changer transitions 0/322 dead transitions. [2022-07-19 21:28:53,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 322 transitions, 1210 flow [2022-07-19 21:28:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:28:53,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:28:53,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1229 transitions. [2022-07-19 21:28:53,249 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8570432357043236 [2022-07-19 21:28:53,249 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1229 transitions. [2022-07-19 21:28:53,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1229 transitions. [2022-07-19 21:28:53,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:53,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1229 transitions. [2022-07-19 21:28:53,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:53,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:53,256 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:53,256 INFO L186 Difference]: Start difference. First operand has 251 places, 296 transitions, 1012 flow. Second operand 6 states and 1229 transitions. [2022-07-19 21:28:53,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 322 transitions, 1210 flow [2022-07-19 21:28:53,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 322 transitions, 1198 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-19 21:28:53,280 INFO L242 Difference]: Finished difference. Result has 247 places, 294 transitions, 1012 flow [2022-07-19 21:28:53,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1012, PETRI_PLACES=247, PETRI_TRANSITIONS=294} [2022-07-19 21:28:53,282 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 38 predicate places. [2022-07-19 21:28:53,283 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 294 transitions, 1012 flow [2022-07-19 21:28:53,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.33333333333334) internal successors, (1196), 6 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:53,284 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:53,284 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] [2022-07-19 21:28:53,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:28:53,284 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-19 21:28:53,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:53,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1338714575, now seen corresponding path program 4 times [2022-07-19 21:28:53,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:53,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819250970] [2022-07-19 21:28:53,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:53,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:53,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:53,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819250970] [2022-07-19 21:28:53,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819250970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:53,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:53,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-19 21:28:53,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43771142] [2022-07-19 21:28:53,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:53,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 21:28:53,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:53,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 21:28:53,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-07-19 21:28:53,988 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-07-19 21:28:53,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 294 transitions, 1012 flow. Second operand has 23 states, 23 states have (on average 165.47826086956522) internal successors, (3806), 23 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:53,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:53,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-07-19 21:28:53,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:57,647 INFO L129 PetriNetUnfolder]: 5419/10357 cut-off events. [2022-07-19 21:28:57,647 INFO L130 PetriNetUnfolder]: For 13991/13991 co-relation queries the response was YES. [2022-07-19 21:28:57,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28485 conditions, 10357 events. 5419/10357 cut-off events. For 13991/13991 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 75405 event pairs, 1450 based on Foata normal form. 1/9502 useless extension candidates. Maximal degree in co-relation 27167. Up to 4719 conditions per place. [2022-07-19 21:28:57,772 INFO L132 encePairwiseOnDemand]: 214/239 looper letters, 278 selfloop transitions, 118 changer transitions 23/548 dead transitions. [2022-07-19 21:28:57,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 548 transitions, 3017 flow [2022-07-19 21:28:57,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-19 21:28:57,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-19 21:28:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5716 transitions. [2022-07-19 21:28:57,786 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7247369088373272 [2022-07-19 21:28:57,786 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5716 transitions. [2022-07-19 21:28:57,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5716 transitions. [2022-07-19 21:28:57,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:57,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5716 transitions. [2022-07-19 21:28:57,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 173.21212121212122) internal successors, (5716), 33 states have internal predecessors, (5716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:57,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 239.0) internal successors, (8126), 34 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:57,830 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 239.0) internal successors, (8126), 34 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:57,830 INFO L186 Difference]: Start difference. First operand has 247 places, 294 transitions, 1012 flow. Second operand 33 states and 5716 transitions. [2022-07-19 21:28:57,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 548 transitions, 3017 flow [2022-07-19 21:28:57,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 548 transitions, 2997 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-19 21:28:57,908 INFO L242 Difference]: Finished difference. Result has 292 places, 367 transitions, 1759 flow [2022-07-19 21:28:57,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1759, PETRI_PLACES=292, PETRI_TRANSITIONS=367} [2022-07-19 21:28:57,911 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 83 predicate places. [2022-07-19 21:28:57,912 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 367 transitions, 1759 flow [2022-07-19 21:28:57,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 165.47826086956522) internal successors, (3806), 23 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:57,913 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:57,913 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:57,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:28:57,914 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-19 21:28:57,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:57,915 INFO L85 PathProgramCache]: Analyzing trace with hash 738858935, now seen corresponding path program 5 times [2022-07-19 21:28:57,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:57,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327144618] [2022-07-19 21:28:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:57,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:58,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:58,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:58,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327144618] [2022-07-19 21:28:58,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327144618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:58,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:58,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-19 21:28:58,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897799295] [2022-07-19 21:28:58,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:58,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 21:28:58,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:58,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 21:28:58,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-07-19 21:28:58,575 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-07-19 21:28:58,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 367 transitions, 1759 flow. Second operand has 25 states, 25 states have (on average 165.28) internal successors, (4132), 25 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:58,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:58,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-07-19 21:28:58,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:03,227 INFO L129 PetriNetUnfolder]: 6663/13005 cut-off events. [2022-07-19 21:29:03,228 INFO L130 PetriNetUnfolder]: For 37279/37279 co-relation queries the response was YES. [2022-07-19 21:29:03,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42554 conditions, 13005 events. 6663/13005 cut-off events. For 37279/37279 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 101680 event pairs, 2001 based on Foata normal form. 1/11905 useless extension candidates. Maximal degree in co-relation 42496. Up to 6337 conditions per place. [2022-07-19 21:29:03,454 INFO L132 encePairwiseOnDemand]: 214/239 looper letters, 471 selfloop transitions, 153 changer transitions 22/775 dead transitions. [2022-07-19 21:29:03,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 775 transitions, 5097 flow [2022-07-19 21:29:03,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-19 21:29:03,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-07-19 21:29:03,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8938 transitions. [2022-07-19 21:29:03,470 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7191824911490183 [2022-07-19 21:29:03,470 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8938 transitions. [2022-07-19 21:29:03,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8938 transitions. [2022-07-19 21:29:03,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:03,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8938 transitions. [2022-07-19 21:29:03,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 171.8846153846154) internal successors, (8938), 52 states have internal predecessors, (8938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:03,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 239.0) internal successors, (12667), 53 states have internal predecessors, (12667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:03,518 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 239.0) internal successors, (12667), 53 states have internal predecessors, (12667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:03,519 INFO L186 Difference]: Start difference. First operand has 292 places, 367 transitions, 1759 flow. Second operand 52 states and 8938 transitions. [2022-07-19 21:29:03,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 775 transitions, 5097 flow [2022-07-19 21:29:03,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 775 transitions, 4872 flow, removed 87 selfloop flow, removed 7 redundant places. [2022-07-19 21:29:03,664 INFO L242 Difference]: Finished difference. Result has 346 places, 491 transitions, 3010 flow [2022-07-19 21:29:03,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3010, PETRI_PLACES=346, PETRI_TRANSITIONS=491} [2022-07-19 21:29:03,665 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 137 predicate places. [2022-07-19 21:29:03,665 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 491 transitions, 3010 flow [2022-07-19 21:29:03,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 165.28) internal successors, (4132), 25 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:03,666 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:03,667 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] [2022-07-19 21:29:03,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:29:03,667 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-19 21:29:03,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:03,667 INFO L85 PathProgramCache]: Analyzing trace with hash 2118239061, now seen corresponding path program 6 times [2022-07-19 21:29:03,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:03,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038041741] [2022-07-19 21:29:03,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:03,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:04,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:04,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038041741] [2022-07-19 21:29:04,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038041741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:04,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:04,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-07-19 21:29:04,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217773961] [2022-07-19 21:29:04,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:04,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-19 21:29:04,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:04,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-19 21:29:04,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-07-19 21:29:04,653 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-07-19 21:29:04,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 491 transitions, 3010 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:04,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:04,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-07-19 21:29:04,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:11,881 INFO L129 PetriNetUnfolder]: 9115/17769 cut-off events. [2022-07-19 21:29:11,882 INFO L130 PetriNetUnfolder]: For 67849/67849 co-relation queries the response was YES. [2022-07-19 21:29:12,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63605 conditions, 17769 events. 9115/17769 cut-off events. For 67849/67849 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 145045 event pairs, 2596 based on Foata normal form. 1/16357 useless extension candidates. Maximal degree in co-relation 63530. Up to 8014 conditions per place. [2022-07-19 21:29:12,177 INFO L132 encePairwiseOnDemand]: 210/239 looper letters, 657 selfloop transitions, 300 changer transitions 15/1095 dead transitions. [2022-07-19 21:29:12,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 1095 transitions, 8865 flow [2022-07-19 21:29:12,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-19 21:29:12,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-07-19 21:29:12,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 10692 transitions. [2022-07-19 21:29:12,191 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.688252333440618 [2022-07-19 21:29:12,191 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 10692 transitions. [2022-07-19 21:29:12,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 10692 transitions. [2022-07-19 21:29:12,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:12,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 10692 transitions. [2022-07-19 21:29:12,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 164.4923076923077) internal successors, (10692), 65 states have internal predecessors, (10692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:12,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 239.0) internal successors, (15774), 66 states have internal predecessors, (15774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:12,234 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 239.0) internal successors, (15774), 66 states have internal predecessors, (15774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:12,234 INFO L186 Difference]: Start difference. First operand has 346 places, 491 transitions, 3010 flow. Second operand 65 states and 10692 transitions. [2022-07-19 21:29:12,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 1095 transitions, 8865 flow [2022-07-19 21:29:13,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 1095 transitions, 8189 flow, removed 336 selfloop flow, removed 5 redundant places. [2022-07-19 21:29:13,059 INFO L242 Difference]: Finished difference. Result has 428 places, 740 transitions, 5602 flow [2022-07-19 21:29:13,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=5602, PETRI_PLACES=428, PETRI_TRANSITIONS=740} [2022-07-19 21:29:13,060 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 219 predicate places. [2022-07-19 21:29:13,061 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 740 transitions, 5602 flow [2022-07-19 21:29:13,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:13,062 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:13,062 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] [2022-07-19 21:29:13,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:29:13,063 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-19 21:29:13,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:13,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1612794211, now seen corresponding path program 7 times [2022-07-19 21:29:13,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:13,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892414438] [2022-07-19 21:29:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:13,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:13,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:13,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892414438] [2022-07-19 21:29:13,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892414438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:13,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:13,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-07-19 21:29:13,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782559056] [2022-07-19 21:29:13,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:13,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-19 21:29:13,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:13,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-19 21:29:13,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-07-19 21:29:13,801 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-07-19 21:29:13,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 740 transitions, 5602 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:13,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:13,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-07-19 21:29:13,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:22,330 INFO L129 PetriNetUnfolder]: 10813/20899 cut-off events. [2022-07-19 21:29:22,331 INFO L130 PetriNetUnfolder]: For 111406/111406 co-relation queries the response was YES. [2022-07-19 21:29:22,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81769 conditions, 20899 events. 10813/20899 cut-off events. For 111406/111406 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 173817 event pairs, 2550 based on Foata normal form. 1/19277 useless extension candidates. Maximal degree in co-relation 81664. Up to 9278 conditions per place. [2022-07-19 21:29:22,888 INFO L132 encePairwiseOnDemand]: 210/239 looper letters, 805 selfloop transitions, 438 changer transitions 15/1381 dead transitions. [2022-07-19 21:29:22,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 1381 transitions, 13234 flow [2022-07-19 21:29:22,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-07-19 21:29:22,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-07-19 21:29:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 14656 transitions. [2022-07-19 21:29:22,917 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6813575081357508 [2022-07-19 21:29:22,917 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 14656 transitions. [2022-07-19 21:29:22,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 14656 transitions. [2022-07-19 21:29:22,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:22,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 14656 transitions. [2022-07-19 21:29:22,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 162.84444444444443) internal successors, (14656), 90 states have internal predecessors, (14656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:22,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 239.0) internal successors, (21749), 91 states have internal predecessors, (21749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:22,996 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 239.0) internal successors, (21749), 91 states have internal predecessors, (21749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:22,996 INFO L186 Difference]: Start difference. First operand has 428 places, 740 transitions, 5602 flow. Second operand 90 states and 14656 transitions. [2022-07-19 21:29:22,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 1381 transitions, 13234 flow [2022-07-19 21:29:23,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 1381 transitions, 12482 flow, removed 374 selfloop flow, removed 5 redundant places. [2022-07-19 21:29:23,674 INFO L242 Difference]: Finished difference. Result has 544 places, 1013 transitions, 9073 flow [2022-07-19 21:29:23,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=4860, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=9073, PETRI_PLACES=544, PETRI_TRANSITIONS=1013} [2022-07-19 21:29:23,677 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 335 predicate places. [2022-07-19 21:29:23,677 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 1013 transitions, 9073 flow [2022-07-19 21:29:23,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:23,678 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:23,679 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] [2022-07-19 21:29:23,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:29:23,679 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-19 21:29:23,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:23,680 INFO L85 PathProgramCache]: Analyzing trace with hash -986311525, now seen corresponding path program 8 times [2022-07-19 21:29:23,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:23,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361622211] [2022-07-19 21:29:23,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:23,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:24,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:24,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361622211] [2022-07-19 21:29:24,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361622211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:24,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:24,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-19 21:29:24,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121680388] [2022-07-19 21:29:24,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:24,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 21:29:24,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:24,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 21:29:24,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2022-07-19 21:29:24,310 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 239 [2022-07-19 21:29:24,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 1013 transitions, 9073 flow. Second operand has 25 states, 25 states have (on average 165.28) internal successors, (4132), 25 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:24,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:24,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 239 [2022-07-19 21:29:24,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:32,108 INFO L129 PetriNetUnfolder]: 12043/23215 cut-off events. [2022-07-19 21:29:32,108 INFO L130 PetriNetUnfolder]: For 281308/281352 co-relation queries the response was YES. [2022-07-19 21:29:32,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102912 conditions, 23215 events. 12043/23215 cut-off events. For 281308/281352 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 199581 event pairs, 2589 based on Foata normal form. 7/21284 useless extension candidates. Maximal degree in co-relation 102769. Up to 10034 conditions per place. [2022-07-19 21:29:32,605 INFO L132 encePairwiseOnDemand]: 214/239 looper letters, 794 selfloop transitions, 490 changer transitions 20/1443 dead transitions. [2022-07-19 21:29:32,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 1443 transitions, 15893 flow [2022-07-19 21:29:32,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-19 21:29:32,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-07-19 21:29:32,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 6951 transitions. [2022-07-19 21:29:32,613 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.727092050209205 [2022-07-19 21:29:32,614 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 6951 transitions. [2022-07-19 21:29:32,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 6951 transitions. [2022-07-19 21:29:32,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:32,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 6951 transitions. [2022-07-19 21:29:32,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 173.775) internal successors, (6951), 40 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:32,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 239.0) internal successors, (9799), 41 states have internal predecessors, (9799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:32,635 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 239.0) internal successors, (9799), 41 states have internal predecessors, (9799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:32,635 INFO L186 Difference]: Start difference. First operand has 544 places, 1013 transitions, 9073 flow. Second operand 40 states and 6951 transitions. [2022-07-19 21:29:32,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 1443 transitions, 15893 flow [2022-07-19 21:29:33,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 1443 transitions, 14288 flow, removed 796 selfloop flow, removed 5 redundant places. [2022-07-19 21:29:33,989 INFO L242 Difference]: Finished difference. Result has 592 places, 1181 transitions, 11129 flow [2022-07-19 21:29:33,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=7516, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1013, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=11129, PETRI_PLACES=592, PETRI_TRANSITIONS=1181} [2022-07-19 21:29:33,991 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 383 predicate places. [2022-07-19 21:29:33,991 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 1181 transitions, 11129 flow [2022-07-19 21:29:33,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 165.28) internal successors, (4132), 25 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:33,992 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:33,992 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:29:33,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:29:33,993 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-19 21:29:33,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:33,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1593302151, now seen corresponding path program 9 times [2022-07-19 21:29:33,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:33,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922609470] [2022-07-19 21:29:33,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:33,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:34,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:34,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:34,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922609470] [2022-07-19 21:29:34,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922609470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:34,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:34,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-07-19 21:29:34,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446388636] [2022-07-19 21:29:34,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:34,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-19 21:29:34,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:34,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-19 21:29:34,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2022-07-19 21:29:34,761 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-07-19 21:29:34,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 1181 transitions, 11129 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:34,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:34,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-07-19 21:29:34,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:46,306 INFO L129 PetriNetUnfolder]: 15448/29157 cut-off events. [2022-07-19 21:29:46,306 INFO L130 PetriNetUnfolder]: For 463788/463788 co-relation queries the response was YES. [2022-07-19 21:29:47,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142634 conditions, 29157 events. 15448/29157 cut-off events. For 463788/463788 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 252005 event pairs, 3045 based on Foata normal form. 1/26927 useless extension candidates. Maximal degree in co-relation 142472. Up to 11674 conditions per place. [2022-07-19 21:29:47,520 INFO L132 encePairwiseOnDemand]: 210/239 looper letters, 1061 selfloop transitions, 789 changer transitions 15/1988 dead transitions. [2022-07-19 21:29:47,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 1988 transitions, 25810 flow [2022-07-19 21:29:47,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-07-19 21:29:47,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2022-07-19 21:29:47,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 12469 transitions. [2022-07-19 21:29:47,533 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.686467738383616 [2022-07-19 21:29:47,533 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 12469 transitions. [2022-07-19 21:29:47,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 12469 transitions. [2022-07-19 21:29:47,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:47,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 12469 transitions. [2022-07-19 21:29:47,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 164.06578947368422) internal successors, (12469), 76 states have internal predecessors, (12469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:47,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 239.0) internal successors, (18403), 77 states have internal predecessors, (18403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:47,583 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 239.0) internal successors, (18403), 77 states have internal predecessors, (18403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:47,583 INFO L186 Difference]: Start difference. First operand has 592 places, 1181 transitions, 11129 flow. Second operand 76 states and 12469 transitions. [2022-07-19 21:29:47,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 1988 transitions, 25810 flow [2022-07-19 21:29:49,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 1988 transitions, 24293 flow, removed 719 selfloop flow, removed 6 redundant places. [2022-07-19 21:29:49,843 INFO L242 Difference]: Finished difference. Result has 696 places, 1623 transitions, 19531 flow [2022-07-19 21:29:49,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=10440, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=19531, PETRI_PLACES=696, PETRI_TRANSITIONS=1623} [2022-07-19 21:29:49,845 INFO L279 CegarLoopForPetriNet]: 209 programPoint places, 487 predicate places. [2022-07-19 21:29:49,845 INFO L495 AbstractCegarLoop]: Abstraction has has 696 places, 1623 transitions, 19531 flow [2022-07-19 21:29:49,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:49,846 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:49,846 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:29:49,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:29:49,847 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-19 21:29:49,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:49,847 INFO L85 PathProgramCache]: Analyzing trace with hash -396270431, now seen corresponding path program 10 times [2022-07-19 21:29:49,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:49,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072314532] [2022-07-19 21:29:49,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:49,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:50,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:50,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:50,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072314532] [2022-07-19 21:29:50,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072314532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:50,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:50,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-07-19 21:29:50,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137498507] [2022-07-19 21:29:50,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:50,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-19 21:29:50,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:50,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-19 21:29:50,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2022-07-19 21:29:50,638 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 239 [2022-07-19 21:29:50,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 1623 transitions, 19531 flow. Second operand has 30 states, 30 states have (on average 157.1) internal successors, (4713), 30 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:50,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:50,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 239 [2022-07-19 21:29:50,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:30:04,868 INFO L129 PetriNetUnfolder]: 17119/32568 cut-off events. [2022-07-19 21:30:04,868 INFO L130 PetriNetUnfolder]: For 717998/717998 co-relation queries the response was YES. [2022-07-19 21:30:06,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168876 conditions, 32568 events. 17119/32568 cut-off events. For 717998/717998 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 287386 event pairs, 3368 based on Foata normal form. 1/30069 useless extension candidates. Maximal degree in co-relation 168672. Up to 12884 conditions per place. [2022-07-19 21:30:06,395 INFO L132 encePairwiseOnDemand]: 210/239 looper letters, 1368 selfloop transitions, 627 changer transitions 15/2133 dead transitions. [2022-07-19 21:30:06,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 2133 transitions, 29296 flow [2022-07-19 21:30:06,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-07-19 21:30:06,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-07-19 21:30:06,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 10466 transitions. [2022-07-19 21:30:06,404 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6842311715481172 [2022-07-19 21:30:06,405 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 10466 transitions. [2022-07-19 21:30:06,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 10466 transitions. [2022-07-19 21:30:06,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:30:06,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 10466 transitions. [2022-07-19 21:30:06,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 163.53125) internal successors, (10466), 64 states have internal predecessors, (10466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:30:06,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 239.0) internal successors, (15535), 65 states have internal predecessors, (15535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:30:06,430 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 239.0) internal successors, (15535), 65 states have internal predecessors, (15535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:30:06,430 INFO L186 Difference]: Start difference. First operand has 696 places, 1623 transitions, 19531 flow. Second operand 64 states and 10466 transitions. [2022-07-19 21:30:06,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 2133 transitions, 29296 flow