./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:25:07,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:25:07,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:25:07,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:25:07,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:25:07,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:25:07,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:25:08,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:25:08,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:25:08,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:25:08,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:25:08,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:25:08,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:25:08,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:25:08,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:25:08,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:25:08,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:25:08,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:25:08,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:25:08,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:25:08,021 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:25:08,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:25:08,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:25:08,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:25:08,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:25:08,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:25:08,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:25:08,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:25:08,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:25:08,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:25:08,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:25:08,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:25:08,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:25:08,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:25:08,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:25:08,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:25:08,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:25:08,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:25:08,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:25:08,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:25:08,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:25:08,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:25:08,043 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:25:08,078 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:25:08,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:25:08,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:25:08,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:25:08,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:25:08,080 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:25:08,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:25:08,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:25:08,081 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:25:08,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:25:08,082 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:25:08,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:25:08,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:25:08,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:25:08,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:25:08,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:25:08,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:25:08,084 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:25:08,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:25:08,084 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:25:08,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:25:08,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:25:08,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:25:08,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:25:08,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:25:08,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:25:08,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:25:08,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:25:08,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:25:08,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:25:08,086 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:25:08,086 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:25:08,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:25:08,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c [2022-07-12 10:25:08,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:25:08,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:25:08,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:25:08,385 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:25:08,385 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:25:08,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2022-07-12 10:25:08,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27c1ae60f/04d1b16a6b6e41b3a663be8626841e15/FLAGac4d8282e [2022-07-12 10:25:08,844 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:25:08,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2022-07-12 10:25:08,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27c1ae60f/04d1b16a6b6e41b3a663be8626841e15/FLAGac4d8282e [2022-07-12 10:25:09,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27c1ae60f/04d1b16a6b6e41b3a663be8626841e15 [2022-07-12 10:25:09,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:25:09,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:25:09,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:25:09,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:25:09,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:25:09,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:25:09" (1/1) ... [2022-07-12 10:25:09,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab8bfac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:09, skipping insertion in model container [2022-07-12 10:25:09,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:25:09" (1/1) ... [2022-07-12 10:25:09,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:25:09,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:25:09,476 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2022-07-12 10:25:09,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:25:09,488 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:25:09,506 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2022-07-12 10:25:09,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:25:09,519 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:25:09,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:09 WrapperNode [2022-07-12 10:25:09,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:25:09,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:25:09,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:25:09,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:25:09,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:09" (1/1) ... [2022-07-12 10:25:09,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:09" (1/1) ... [2022-07-12 10:25:09,562 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 130 [2022-07-12 10:25:09,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:25:09,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:25:09,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:25:09,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:25:09,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:09" (1/1) ... [2022-07-12 10:25:09,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:09" (1/1) ... [2022-07-12 10:25:09,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:09" (1/1) ... [2022-07-12 10:25:09,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:09" (1/1) ... [2022-07-12 10:25:09,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:09" (1/1) ... [2022-07-12 10:25:09,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:09" (1/1) ... [2022-07-12 10:25:09,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:09" (1/1) ... [2022-07-12 10:25:09,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:25:09,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:25:09,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:25:09,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:25:09,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:09" (1/1) ... [2022-07-12 10:25:09,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:25:09,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:25:09,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:25:09,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:25:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:25:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:25:09,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:25:09,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:25:09,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:25:09,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:25:09,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:25:09,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:25:09,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:25:09,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:25:09,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:25:09,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:25:09,668 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:25:09,733 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:25:09,734 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:25:09,939 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:25:09,949 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:25:09,949 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:25:09,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:25:09 BoogieIcfgContainer [2022-07-12 10:25:09,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:25:09,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:25:09,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:25:09,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:25:09,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:25:09" (1/3) ... [2022-07-12 10:25:09,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25caba45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:25:09, skipping insertion in model container [2022-07-12 10:25:09,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:25:09" (2/3) ... [2022-07-12 10:25:09,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25caba45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:25:09, skipping insertion in model container [2022-07-12 10:25:09,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:25:09" (3/3) ... [2022-07-12 10:25:09,975 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2022-07-12 10:25:09,980 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:25:09,988 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:25:09,988 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:25:09,989 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:25:10,108 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-12 10:25:10,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 170 places, 176 transitions, 368 flow [2022-07-12 10:25:10,209 INFO L129 PetriNetUnfolder]: 13/174 cut-off events. [2022-07-12 10:25:10,209 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:25:10,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 174 events. 13/174 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 288 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-07-12 10:25:10,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 176 transitions, 368 flow [2022-07-12 10:25:10,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 165 transitions, 342 flow [2022-07-12 10:25:10,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:25:10,238 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@2093a9c8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@41f1bef3 [2022-07-12 10:25:10,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-12 10:25:10,291 INFO L129 PetriNetUnfolder]: 13/164 cut-off events. [2022-07-12 10:25:10,291 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:25:10,292 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:10,292 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] [2022-07-12 10:25:10,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:10,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:10,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1136902299, now seen corresponding path program 1 times [2022-07-12 10:25:10,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:10,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771314514] [2022-07-12 10:25:10,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:10,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:10,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:10,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771314514] [2022-07-12 10:25:10,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771314514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:10,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:10,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:10,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909471925] [2022-07-12 10:25:10,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:10,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:10,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:10,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:10,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:10,597 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-07-12 10:25:10,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 165 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:10,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:10,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-07-12 10:25:10,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:10,739 INFO L129 PetriNetUnfolder]: 27/458 cut-off events. [2022-07-12 10:25:10,739 INFO L130 PetriNetUnfolder]: For 44/45 co-relation queries the response was YES. [2022-07-12 10:25:10,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 458 events. 27/458 cut-off events. For 44/45 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2355 event pairs, 7 based on Foata normal form. 20/433 useless extension candidates. Maximal degree in co-relation 339. Up to 26 conditions per place. [2022-07-12 10:25:10,746 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 15 selfloop transitions, 3 changer transitions 3/164 dead transitions. [2022-07-12 10:25:10,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 164 transitions, 385 flow [2022-07-12 10:25:10,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:10,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2022-07-12 10:25:10,767 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9450757575757576 [2022-07-12 10:25:10,768 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2022-07-12 10:25:10,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2022-07-12 10:25:10,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:10,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2022-07-12 10:25:10,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:10,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:10,795 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:10,797 INFO L186 Difference]: Start difference. First operand has 159 places, 165 transitions, 342 flow. Second operand 3 states and 499 transitions. [2022-07-12 10:25:10,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 164 transitions, 385 flow [2022-07-12 10:25:10,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 164 transitions, 371 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:25:10,805 INFO L242 Difference]: Finished difference. Result has 159 places, 158 transitions, 344 flow [2022-07-12 10:25:10,808 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=159, PETRI_TRANSITIONS=158} [2022-07-12 10:25:10,811 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 0 predicate places. [2022-07-12 10:25:10,811 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 158 transitions, 344 flow [2022-07-12 10:25:10,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:10,812 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:10,812 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] [2022-07-12 10:25:10,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:25:10,813 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:10,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:10,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1762878269, now seen corresponding path program 1 times [2022-07-12 10:25:10,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:10,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915830063] [2022-07-12 10:25:10,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:10,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:11,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:11,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915830063] [2022-07-12 10:25:11,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915830063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:11,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:11,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:11,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585797863] [2022-07-12 10:25:11,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:11,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:11,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:11,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:11,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:11,099 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:11,100 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 158 transitions, 344 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:11,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:11,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:11,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:11,618 INFO L129 PetriNetUnfolder]: 187/880 cut-off events. [2022-07-12 10:25:11,622 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-07-12 10:25:11,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 880 events. 187/880 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5666 event pairs, 66 based on Foata normal form. 1/822 useless extension candidates. Maximal degree in co-relation 873. Up to 259 conditions per place. [2022-07-12 10:25:11,631 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 82 selfloop transitions, 5 changer transitions 34/247 dead transitions. [2022-07-12 10:25:11,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 247 transitions, 777 flow [2022-07-12 10:25:11,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:25:11,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:25:11,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3314 transitions. [2022-07-12 10:25:11,641 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7845643939393939 [2022-07-12 10:25:11,641 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3314 transitions. [2022-07-12 10:25:11,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3314 transitions. [2022-07-12 10:25:11,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:11,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3314 transitions. [2022-07-12 10:25:11,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 138.08333333333334) internal successors, (3314), 24 states have internal predecessors, (3314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:11,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:11,666 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:11,667 INFO L186 Difference]: Start difference. First operand has 159 places, 158 transitions, 344 flow. Second operand 24 states and 3314 transitions. [2022-07-12 10:25:11,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 247 transitions, 777 flow [2022-07-12 10:25:11,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 247 transitions, 774 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:11,677 INFO L242 Difference]: Finished difference. Result has 200 places, 162 transitions, 432 flow [2022-07-12 10:25:11,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=432, PETRI_PLACES=200, PETRI_TRANSITIONS=162} [2022-07-12 10:25:11,678 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 41 predicate places. [2022-07-12 10:25:11,679 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 162 transitions, 432 flow [2022-07-12 10:25:11,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:11,680 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:11,681 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:11,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:25:11,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:11,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:11,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1405916061, now seen corresponding path program 1 times [2022-07-12 10:25:11,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:11,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328658445] [2022-07-12 10:25:11,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:11,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:11,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:11,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328658445] [2022-07-12 10:25:11,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328658445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:11,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:11,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:11,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154648710] [2022-07-12 10:25:11,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:11,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:11,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:11,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:11,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:11,770 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-07-12 10:25:11,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 162 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:11,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:11,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-07-12 10:25:11,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:11,839 INFO L129 PetriNetUnfolder]: 39/488 cut-off events. [2022-07-12 10:25:11,839 INFO L130 PetriNetUnfolder]: For 524/541 co-relation queries the response was YES. [2022-07-12 10:25:11,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 488 events. 39/488 cut-off events. For 524/541 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2284 event pairs, 26 based on Foata normal form. 1/454 useless extension candidates. Maximal degree in co-relation 830. Up to 27 conditions per place. [2022-07-12 10:25:11,843 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 16 selfloop transitions, 5 changer transitions 0/168 dead transitions. [2022-07-12 10:25:11,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 168 transitions, 495 flow [2022-07-12 10:25:11,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:11,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:11,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-07-12 10:25:11,845 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-07-12 10:25:11,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-07-12 10:25:11,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-07-12 10:25:11,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:11,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-07-12 10:25:11,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:11,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:11,849 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:11,849 INFO L186 Difference]: Start difference. First operand has 200 places, 162 transitions, 432 flow. Second operand 3 states and 489 transitions. [2022-07-12 10:25:11,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 168 transitions, 495 flow [2022-07-12 10:25:11,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 168 transitions, 476 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-07-12 10:25:11,857 INFO L242 Difference]: Finished difference. Result has 177 places, 165 transitions, 457 flow [2022-07-12 10:25:11,857 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=457, PETRI_PLACES=177, PETRI_TRANSITIONS=165} [2022-07-12 10:25:11,858 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 18 predicate places. [2022-07-12 10:25:11,858 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 165 transitions, 457 flow [2022-07-12 10:25:11,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:11,859 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:11,859 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] [2022-07-12 10:25:11,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:25:11,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:11,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:11,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1946352631, now seen corresponding path program 1 times [2022-07-12 10:25:11,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:11,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005332778] [2022-07-12 10:25:11,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:11,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:11,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:11,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005332778] [2022-07-12 10:25:11,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005332778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:11,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:11,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:11,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648363004] [2022-07-12 10:25:11,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:11,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:11,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:11,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:11,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:11,910 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-07-12 10:25:11,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 165 transitions, 457 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:11,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:11,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-07-12 10:25:11,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:12,006 INFO L129 PetriNetUnfolder]: 63/751 cut-off events. [2022-07-12 10:25:12,007 INFO L130 PetriNetUnfolder]: For 727/768 co-relation queries the response was YES. [2022-07-12 10:25:12,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 751 events. 63/751 cut-off events. For 727/768 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4482 event pairs, 39 based on Foata normal form. 9/723 useless extension candidates. Maximal degree in co-relation 1079. Up to 58 conditions per place. [2022-07-12 10:25:12,013 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 13 selfloop transitions, 5 changer transitions 0/171 dead transitions. [2022-07-12 10:25:12,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 171 transitions, 508 flow [2022-07-12 10:25:12,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:12,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:12,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-07-12 10:25:12,015 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-07-12 10:25:12,015 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-07-12 10:25:12,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-07-12 10:25:12,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:12,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-07-12 10:25:12,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,019 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,019 INFO L186 Difference]: Start difference. First operand has 177 places, 165 transitions, 457 flow. Second operand 3 states and 489 transitions. [2022-07-12 10:25:12,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 171 transitions, 508 flow [2022-07-12 10:25:12,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 171 transitions, 492 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:12,025 INFO L242 Difference]: Finished difference. Result has 179 places, 168 transitions, 479 flow [2022-07-12 10:25:12,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=479, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2022-07-12 10:25:12,026 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 20 predicate places. [2022-07-12 10:25:12,027 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 479 flow [2022-07-12 10:25:12,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,027 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:12,027 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] [2022-07-12 10:25:12,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:25:12,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:12,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:12,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1833288823, now seen corresponding path program 2 times [2022-07-12 10:25:12,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:12,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095026698] [2022-07-12 10:25:12,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:12,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:12,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:12,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095026698] [2022-07-12 10:25:12,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095026698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:12,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:12,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:25:12,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242270148] [2022-07-12 10:25:12,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:12,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:25:12,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:12,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:25:12,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:25:12,068 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-07-12 10:25:12,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 479 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:12,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-07-12 10:25:12,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:12,138 INFO L129 PetriNetUnfolder]: 38/588 cut-off events. [2022-07-12 10:25:12,139 INFO L130 PetriNetUnfolder]: For 432/445 co-relation queries the response was YES. [2022-07-12 10:25:12,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1040 conditions, 588 events. 38/588 cut-off events. For 432/445 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3256 event pairs, 28 based on Foata normal form. 8/572 useless extension candidates. Maximal degree in co-relation 899. Up to 36 conditions per place. [2022-07-12 10:25:12,143 INFO L132 encePairwiseOnDemand]: 170/176 looper letters, 18 selfloop transitions, 3 changer transitions 2/174 dead transitions. [2022-07-12 10:25:12,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 174 transitions, 542 flow [2022-07-12 10:25:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:25:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:25:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-07-12 10:25:12,145 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-07-12 10:25:12,145 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-07-12 10:25:12,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-07-12 10:25:12,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:12,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-07-12 10:25:12,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,149 INFO L186 Difference]: Start difference. First operand has 179 places, 168 transitions, 479 flow. Second operand 3 states and 489 transitions. [2022-07-12 10:25:12,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 174 transitions, 542 flow [2022-07-12 10:25:12,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 174 transitions, 532 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:25:12,155 INFO L242 Difference]: Finished difference. Result has 181 places, 169 transitions, 501 flow [2022-07-12 10:25:12,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=501, PETRI_PLACES=181, PETRI_TRANSITIONS=169} [2022-07-12 10:25:12,156 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 22 predicate places. [2022-07-12 10:25:12,156 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 169 transitions, 501 flow [2022-07-12 10:25:12,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,157 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:12,157 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] [2022-07-12 10:25:12,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:25:12,158 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:12,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:12,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1107231657, now seen corresponding path program 1 times [2022-07-12 10:25:12,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:12,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813098807] [2022-07-12 10:25:12,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:12,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:12,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:12,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813098807] [2022-07-12 10:25:12,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813098807] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:12,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:12,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:12,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706456070] [2022-07-12 10:25:12,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:12,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:12,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:12,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:12,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:12,263 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:12,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 169 transitions, 501 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:12,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:12,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:12,551 INFO L129 PetriNetUnfolder]: 131/828 cut-off events. [2022-07-12 10:25:12,551 INFO L130 PetriNetUnfolder]: For 694/729 co-relation queries the response was YES. [2022-07-12 10:25:12,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1833 conditions, 828 events. 131/828 cut-off events. For 694/729 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5002 event pairs, 49 based on Foata normal form. 10/805 useless extension candidates. Maximal degree in co-relation 1487. Up to 176 conditions per place. [2022-07-12 10:25:12,558 INFO L132 encePairwiseOnDemand]: 161/176 looper letters, 38 selfloop transitions, 7 changer transitions 51/226 dead transitions. [2022-07-12 10:25:12,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 226 transitions, 918 flow [2022-07-12 10:25:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:25:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:25:12,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1950 transitions. [2022-07-12 10:25:12,563 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7913961038961039 [2022-07-12 10:25:12,563 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1950 transitions. [2022-07-12 10:25:12,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1950 transitions. [2022-07-12 10:25:12,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:12,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1950 transitions. [2022-07-12 10:25:12,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 139.28571428571428) internal successors, (1950), 14 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 176.0) internal successors, (2640), 15 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,576 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 176.0) internal successors, (2640), 15 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,576 INFO L186 Difference]: Start difference. First operand has 181 places, 169 transitions, 501 flow. Second operand 14 states and 1950 transitions. [2022-07-12 10:25:12,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 226 transitions, 918 flow [2022-07-12 10:25:12,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 226 transitions, 909 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-12 10:25:12,584 INFO L242 Difference]: Finished difference. Result has 202 places, 166 transitions, 546 flow [2022-07-12 10:25:12,584 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=546, PETRI_PLACES=202, PETRI_TRANSITIONS=166} [2022-07-12 10:25:12,587 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 43 predicate places. [2022-07-12 10:25:12,587 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 166 transitions, 546 flow [2022-07-12 10:25:12,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,588 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:12,588 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] [2022-07-12 10:25:12,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:25:12,589 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:12,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:12,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1346623849, now seen corresponding path program 1 times [2022-07-12 10:25:12,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:12,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954843360] [2022-07-12 10:25:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:12,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:12,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:12,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:12,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954843360] [2022-07-12 10:25:12,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954843360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:12,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:12,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:12,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254250177] [2022-07-12 10:25:12,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:12,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:12,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:12,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:12,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:12,801 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:12,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 166 transitions, 546 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:12,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:12,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:12,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:13,130 INFO L129 PetriNetUnfolder]: 127/800 cut-off events. [2022-07-12 10:25:13,131 INFO L130 PetriNetUnfolder]: For 2137/2157 co-relation queries the response was YES. [2022-07-12 10:25:13,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 800 events. 127/800 cut-off events. For 2137/2157 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4607 event pairs, 69 based on Foata normal form. 9/778 useless extension candidates. Maximal degree in co-relation 2211. Up to 229 conditions per place. [2022-07-12 10:25:13,138 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 14 changer transitions 25/222 dead transitions. [2022-07-12 10:25:13,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 222 transitions, 1163 flow [2022-07-12 10:25:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:25:13,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:25:13,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2212 transitions. [2022-07-12 10:25:13,144 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7855113636363636 [2022-07-12 10:25:13,144 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2212 transitions. [2022-07-12 10:25:13,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2212 transitions. [2022-07-12 10:25:13,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:13,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2212 transitions. [2022-07-12 10:25:13,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 138.25) internal successors, (2212), 16 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:13,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:13,156 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:13,156 INFO L186 Difference]: Start difference. First operand has 202 places, 166 transitions, 546 flow. Second operand 16 states and 2212 transitions. [2022-07-12 10:25:13,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 222 transitions, 1163 flow [2022-07-12 10:25:13,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 222 transitions, 1000 flow, removed 76 selfloop flow, removed 10 redundant places. [2022-07-12 10:25:13,170 INFO L242 Difference]: Finished difference. Result has 208 places, 179 transitions, 674 flow [2022-07-12 10:25:13,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=674, PETRI_PLACES=208, PETRI_TRANSITIONS=179} [2022-07-12 10:25:13,172 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 49 predicate places. [2022-07-12 10:25:13,172 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 179 transitions, 674 flow [2022-07-12 10:25:13,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:13,173 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:13,173 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] [2022-07-12 10:25:13,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:25:13,174 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:13,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:13,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1999810905, now seen corresponding path program 2 times [2022-07-12 10:25:13,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:13,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064110536] [2022-07-12 10:25:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:13,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:13,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:13,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064110536] [2022-07-12 10:25:13,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064110536] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:13,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:13,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:13,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397001377] [2022-07-12 10:25:13,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:13,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:13,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:13,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:13,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:13,313 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:13,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 179 transitions, 674 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:13,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:13,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:13,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:13,703 INFO L129 PetriNetUnfolder]: 131/786 cut-off events. [2022-07-12 10:25:13,703 INFO L130 PetriNetUnfolder]: For 1870/1890 co-relation queries the response was YES. [2022-07-12 10:25:13,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2280 conditions, 786 events. 131/786 cut-off events. For 1870/1890 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4573 event pairs, 59 based on Foata normal form. 9/769 useless extension candidates. Maximal degree in co-relation 2200. Up to 199 conditions per place. [2022-07-12 10:25:13,710 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 81 selfloop transitions, 11 changer transitions 41/262 dead transitions. [2022-07-12 10:25:13,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 262 transitions, 1489 flow [2022-07-12 10:25:13,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:25:13,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:25:13,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3306 transitions. [2022-07-12 10:25:13,718 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7826704545454546 [2022-07-12 10:25:13,719 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3306 transitions. [2022-07-12 10:25:13,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3306 transitions. [2022-07-12 10:25:13,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:13,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3306 transitions. [2022-07-12 10:25:13,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.75) internal successors, (3306), 24 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:13,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:13,736 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:13,736 INFO L186 Difference]: Start difference. First operand has 208 places, 179 transitions, 674 flow. Second operand 24 states and 3306 transitions. [2022-07-12 10:25:13,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 262 transitions, 1489 flow [2022-07-12 10:25:13,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 262 transitions, 1351 flow, removed 68 selfloop flow, removed 9 redundant places. [2022-07-12 10:25:13,750 INFO L242 Difference]: Finished difference. Result has 236 places, 183 transitions, 741 flow [2022-07-12 10:25:13,751 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=741, PETRI_PLACES=236, PETRI_TRANSITIONS=183} [2022-07-12 10:25:13,754 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 77 predicate places. [2022-07-12 10:25:13,754 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 183 transitions, 741 flow [2022-07-12 10:25:13,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:13,755 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:13,755 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] [2022-07-12 10:25:13,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:25:13,755 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:13,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:13,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1549065623, now seen corresponding path program 3 times [2022-07-12 10:25:13,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:13,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138464569] [2022-07-12 10:25:13,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:13,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:13,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:13,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138464569] [2022-07-12 10:25:13,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138464569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:13,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:13,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:13,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696923388] [2022-07-12 10:25:13,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:13,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:13,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:13,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:13,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:13,901 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:13,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 183 transitions, 741 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:13,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:13,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:13,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:14,234 INFO L129 PetriNetUnfolder]: 148/828 cut-off events. [2022-07-12 10:25:14,234 INFO L130 PetriNetUnfolder]: For 3899/3921 co-relation queries the response was YES. [2022-07-12 10:25:14,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2866 conditions, 828 events. 148/828 cut-off events. For 3899/3921 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4845 event pairs, 77 based on Foata normal form. 10/808 useless extension candidates. Maximal degree in co-relation 2773. Up to 251 conditions per place. [2022-07-12 10:25:14,244 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 67 selfloop transitions, 18 changer transitions 25/239 dead transitions. [2022-07-12 10:25:14,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 239 transitions, 1577 flow [2022-07-12 10:25:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:14,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2347 transitions. [2022-07-12 10:25:14,251 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7844251336898396 [2022-07-12 10:25:14,251 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2347 transitions. [2022-07-12 10:25:14,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2347 transitions. [2022-07-12 10:25:14,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:14,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2347 transitions. [2022-07-12 10:25:14,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 138.05882352941177) internal successors, (2347), 17 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:14,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:14,266 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:14,266 INFO L186 Difference]: Start difference. First operand has 236 places, 183 transitions, 741 flow. Second operand 17 states and 2347 transitions. [2022-07-12 10:25:14,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 239 transitions, 1577 flow [2022-07-12 10:25:14,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 239 transitions, 1369 flow, removed 100 selfloop flow, removed 15 redundant places. [2022-07-12 10:25:14,287 INFO L242 Difference]: Finished difference. Result has 232 places, 198 transitions, 943 flow [2022-07-12 10:25:14,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=943, PETRI_PLACES=232, PETRI_TRANSITIONS=198} [2022-07-12 10:25:14,288 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 73 predicate places. [2022-07-12 10:25:14,289 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 198 transitions, 943 flow [2022-07-12 10:25:14,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:14,290 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:14,290 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] [2022-07-12 10:25:14,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:25:14,290 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:14,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:14,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1771293929, now seen corresponding path program 4 times [2022-07-12 10:25:14,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:14,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570774262] [2022-07-12 10:25:14,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:14,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:14,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:14,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:14,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570774262] [2022-07-12 10:25:14,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570774262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:14,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:14,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:14,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743002052] [2022-07-12 10:25:14,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:14,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:14,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:14,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:14,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:14,394 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:14,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 198 transitions, 943 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:14,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:14,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:14,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:14,743 INFO L129 PetriNetUnfolder]: 155/864 cut-off events. [2022-07-12 10:25:14,744 INFO L130 PetriNetUnfolder]: For 3195/3219 co-relation queries the response was YES. [2022-07-12 10:25:14,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2900 conditions, 864 events. 155/864 cut-off events. For 3195/3219 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5171 event pairs, 76 based on Foata normal form. 10/841 useless extension candidates. Maximal degree in co-relation 2808. Up to 235 conditions per place. [2022-07-12 10:25:14,754 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 78 selfloop transitions, 20 changer transitions 33/260 dead transitions. [2022-07-12 10:25:14,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 260 transitions, 1829 flow [2022-07-12 10:25:14,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:25:14,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:25:14,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2756 transitions. [2022-07-12 10:25:14,758 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7829545454545455 [2022-07-12 10:25:14,758 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2756 transitions. [2022-07-12 10:25:14,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2756 transitions. [2022-07-12 10:25:14,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:14,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2756 transitions. [2022-07-12 10:25:14,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.8) internal successors, (2756), 20 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:14,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:14,769 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:14,769 INFO L186 Difference]: Start difference. First operand has 232 places, 198 transitions, 943 flow. Second operand 20 states and 2756 transitions. [2022-07-12 10:25:14,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 260 transitions, 1829 flow [2022-07-12 10:25:14,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 260 transitions, 1676 flow, removed 74 selfloop flow, removed 11 redundant places. [2022-07-12 10:25:14,789 INFO L242 Difference]: Finished difference. Result has 249 places, 209 transitions, 1085 flow [2022-07-12 10:25:14,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1085, PETRI_PLACES=249, PETRI_TRANSITIONS=209} [2022-07-12 10:25:14,790 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-07-12 10:25:14,790 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 209 transitions, 1085 flow [2022-07-12 10:25:14,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:14,791 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:14,791 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] [2022-07-12 10:25:14,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:25:14,792 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:14,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:14,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1295898935, now seen corresponding path program 5 times [2022-07-12 10:25:14,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:14,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118894584] [2022-07-12 10:25:14,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:14,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:14,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:14,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118894584] [2022-07-12 10:25:14,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118894584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:14,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:14,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:14,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419331917] [2022-07-12 10:25:14,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:14,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:14,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:14,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:14,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:14,911 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:14,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 209 transitions, 1085 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:14,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:14,913 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:14,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:15,317 INFO L129 PetriNetUnfolder]: 152/860 cut-off events. [2022-07-12 10:25:15,318 INFO L130 PetriNetUnfolder]: For 3729/3757 co-relation queries the response was YES. [2022-07-12 10:25:15,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2990 conditions, 860 events. 152/860 cut-off events. For 3729/3757 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5187 event pairs, 66 based on Foata normal form. 9/838 useless extension candidates. Maximal degree in co-relation 2891. Up to 200 conditions per place. [2022-07-12 10:25:15,327 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 97 selfloop transitions, 25 changer transitions 42/293 dead transitions. [2022-07-12 10:25:15,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 293 transitions, 2288 flow [2022-07-12 10:25:15,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:25:15,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:25:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3304 transitions. [2022-07-12 10:25:15,332 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7821969696969697 [2022-07-12 10:25:15,332 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3304 transitions. [2022-07-12 10:25:15,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3304 transitions. [2022-07-12 10:25:15,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:15,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3304 transitions. [2022-07-12 10:25:15,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.66666666666666) internal successors, (3304), 24 states have internal predecessors, (3304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,344 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,345 INFO L186 Difference]: Start difference. First operand has 249 places, 209 transitions, 1085 flow. Second operand 24 states and 3304 transitions. [2022-07-12 10:25:15,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 293 transitions, 2288 flow [2022-07-12 10:25:15,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 293 transitions, 2124 flow, removed 75 selfloop flow, removed 12 redundant places. [2022-07-12 10:25:15,367 INFO L242 Difference]: Finished difference. Result has 267 places, 211 transitions, 1179 flow [2022-07-12 10:25:15,368 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1179, PETRI_PLACES=267, PETRI_TRANSITIONS=211} [2022-07-12 10:25:15,368 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 108 predicate places. [2022-07-12 10:25:15,368 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 211 transitions, 1179 flow [2022-07-12 10:25:15,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,369 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:15,369 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] [2022-07-12 10:25:15,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:25:15,370 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:15,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:15,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1308926351, now seen corresponding path program 6 times [2022-07-12 10:25:15,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:15,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728994931] [2022-07-12 10:25:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:15,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:15,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:15,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728994931] [2022-07-12 10:25:15,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728994931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:15,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:15,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:15,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553690534] [2022-07-12 10:25:15,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:15,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:15,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:15,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:15,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:15,484 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:15,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 211 transitions, 1179 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:15,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:15,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:15,885 INFO L129 PetriNetUnfolder]: 169/957 cut-off events. [2022-07-12 10:25:15,886 INFO L130 PetriNetUnfolder]: For 4574/4598 co-relation queries the response was YES. [2022-07-12 10:25:15,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3461 conditions, 957 events. 169/957 cut-off events. For 4574/4598 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6144 event pairs, 71 based on Foata normal form. 10/938 useless extension candidates. Maximal degree in co-relation 3364. Up to 268 conditions per place. [2022-07-12 10:25:15,897 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 87 selfloop transitions, 27 changer transitions 32/275 dead transitions. [2022-07-12 10:25:15,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 275 transitions, 2245 flow [2022-07-12 10:25:15,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:25:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:25:15,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3022 transitions. [2022-07-12 10:25:15,901 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7804752066115702 [2022-07-12 10:25:15,901 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3022 transitions. [2022-07-12 10:25:15,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3022 transitions. [2022-07-12 10:25:15,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:15,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3022 transitions. [2022-07-12 10:25:15,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.36363636363637) internal successors, (3022), 22 states have internal predecessors, (3022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,911 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,911 INFO L186 Difference]: Start difference. First operand has 267 places, 211 transitions, 1179 flow. Second operand 22 states and 3022 transitions. [2022-07-12 10:25:15,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 275 transitions, 2245 flow [2022-07-12 10:25:15,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 275 transitions, 2146 flow, removed 24 selfloop flow, removed 17 redundant places. [2022-07-12 10:25:15,935 INFO L242 Difference]: Finished difference. Result has 269 places, 222 transitions, 1388 flow [2022-07-12 10:25:15,935 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1388, PETRI_PLACES=269, PETRI_TRANSITIONS=222} [2022-07-12 10:25:15,936 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2022-07-12 10:25:15,936 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 222 transitions, 1388 flow [2022-07-12 10:25:15,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:15,936 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:15,937 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] [2022-07-12 10:25:15,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:25:15,937 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:15,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1877607927, now seen corresponding path program 7 times [2022-07-12 10:25:15,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:15,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718582945] [2022-07-12 10:25:15,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:15,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:16,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:16,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718582945] [2022-07-12 10:25:16,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718582945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:16,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:16,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:16,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767829190] [2022-07-12 10:25:16,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:16,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:16,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:16,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:16,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:16,047 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:16,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 222 transitions, 1388 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:16,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:16,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:16,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:16,435 INFO L129 PetriNetUnfolder]: 165/952 cut-off events. [2022-07-12 10:25:16,436 INFO L130 PetriNetUnfolder]: For 5427/5454 co-relation queries the response was YES. [2022-07-12 10:25:16,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 952 events. 165/952 cut-off events. For 5427/5454 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6132 event pairs, 75 based on Foata normal form. 9/932 useless extension candidates. Maximal degree in co-relation 3478. Up to 261 conditions per place. [2022-07-12 10:25:16,447 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 87 selfloop transitions, 28 changer transitions 33/277 dead transitions. [2022-07-12 10:25:16,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 277 transitions, 2436 flow [2022-07-12 10:25:16,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:25:16,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:25:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2891 transitions. [2022-07-12 10:25:16,451 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7821969696969697 [2022-07-12 10:25:16,451 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2891 transitions. [2022-07-12 10:25:16,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2891 transitions. [2022-07-12 10:25:16,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:16,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2891 transitions. [2022-07-12 10:25:16,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.66666666666666) internal successors, (2891), 21 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:16,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:16,461 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:16,461 INFO L186 Difference]: Start difference. First operand has 269 places, 222 transitions, 1388 flow. Second operand 21 states and 2891 transitions. [2022-07-12 10:25:16,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 277 transitions, 2436 flow [2022-07-12 10:25:16,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 277 transitions, 2306 flow, removed 58 selfloop flow, removed 11 redundant places. [2022-07-12 10:25:16,491 INFO L242 Difference]: Finished difference. Result has 280 places, 228 transitions, 1563 flow [2022-07-12 10:25:16,491 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1563, PETRI_PLACES=280, PETRI_TRANSITIONS=228} [2022-07-12 10:25:16,492 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 121 predicate places. [2022-07-12 10:25:16,492 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 228 transitions, 1563 flow [2022-07-12 10:25:16,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:16,493 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:16,493 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] [2022-07-12 10:25:16,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:25:16,493 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:16,494 INFO L85 PathProgramCache]: Analyzing trace with hash -6717397, now seen corresponding path program 8 times [2022-07-12 10:25:16,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:16,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045512118] [2022-07-12 10:25:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:16,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:16,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:16,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045512118] [2022-07-12 10:25:16,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045512118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:16,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:16,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:16,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369726261] [2022-07-12 10:25:16,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:16,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:16,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:16,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:16,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:16,612 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:16,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 228 transitions, 1563 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:16,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:16,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:16,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:16,953 INFO L129 PetriNetUnfolder]: 152/922 cut-off events. [2022-07-12 10:25:16,953 INFO L130 PetriNetUnfolder]: For 5277/5302 co-relation queries the response was YES. [2022-07-12 10:25:16,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3450 conditions, 922 events. 152/922 cut-off events. For 5277/5302 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5797 event pairs, 67 based on Foata normal form. 11/905 useless extension candidates. Maximal degree in co-relation 3340. Up to 271 conditions per place. [2022-07-12 10:25:16,965 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 86 selfloop transitions, 32 changer transitions 27/274 dead transitions. [2022-07-12 10:25:16,965 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 274 transitions, 2486 flow [2022-07-12 10:25:16,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:16,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:16,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2478 transitions. [2022-07-12 10:25:16,968 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7821969696969697 [2022-07-12 10:25:16,968 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2478 transitions. [2022-07-12 10:25:16,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2478 transitions. [2022-07-12 10:25:16,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:16,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2478 transitions. [2022-07-12 10:25:16,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.66666666666666) internal successors, (2478), 18 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:16,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:16,977 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:16,977 INFO L186 Difference]: Start difference. First operand has 280 places, 228 transitions, 1563 flow. Second operand 18 states and 2478 transitions. [2022-07-12 10:25:16,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 274 transitions, 2486 flow [2022-07-12 10:25:17,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 274 transitions, 2311 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-07-12 10:25:17,033 INFO L242 Difference]: Finished difference. Result has 279 places, 235 transitions, 1685 flow [2022-07-12 10:25:17,034 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1685, PETRI_PLACES=279, PETRI_TRANSITIONS=235} [2022-07-12 10:25:17,034 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 120 predicate places. [2022-07-12 10:25:17,034 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 235 transitions, 1685 flow [2022-07-12 10:25:17,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:17,035 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:17,035 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] [2022-07-12 10:25:17,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:25:17,036 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:17,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:17,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1255932177, now seen corresponding path program 9 times [2022-07-12 10:25:17,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:17,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905771651] [2022-07-12 10:25:17,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:17,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:17,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:17,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905771651] [2022-07-12 10:25:17,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905771651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:17,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:17,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:17,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363982659] [2022-07-12 10:25:17,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:17,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:17,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:17,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:17,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:17,169 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:17,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 235 transitions, 1685 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:17,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:17,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:17,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:17,568 INFO L129 PetriNetUnfolder]: 149/917 cut-off events. [2022-07-12 10:25:17,568 INFO L130 PetriNetUnfolder]: For 4834/4870 co-relation queries the response was YES. [2022-07-12 10:25:17,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3380 conditions, 917 events. 149/917 cut-off events. For 4834/4870 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5810 event pairs, 70 based on Foata normal form. 12/899 useless extension candidates. Maximal degree in co-relation 3270. Up to 272 conditions per place. [2022-07-12 10:25:17,578 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 85 selfloop transitions, 33 changer transitions 33/280 dead transitions. [2022-07-12 10:25:17,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 280 transitions, 2600 flow [2022-07-12 10:25:17,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:25:17,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:25:17,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2751 transitions. [2022-07-12 10:25:17,583 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7815340909090909 [2022-07-12 10:25:17,583 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2751 transitions. [2022-07-12 10:25:17,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2751 transitions. [2022-07-12 10:25:17,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:17,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2751 transitions. [2022-07-12 10:25:17,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.55) internal successors, (2751), 20 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:17,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:17,592 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:17,593 INFO L186 Difference]: Start difference. First operand has 279 places, 235 transitions, 1685 flow. Second operand 20 states and 2751 transitions. [2022-07-12 10:25:17,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 280 transitions, 2600 flow [2022-07-12 10:25:17,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 280 transitions, 2470 flow, removed 37 selfloop flow, removed 10 redundant places. [2022-07-12 10:25:17,624 INFO L242 Difference]: Finished difference. Result has 292 places, 238 transitions, 1765 flow [2022-07-12 10:25:17,625 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1765, PETRI_PLACES=292, PETRI_TRANSITIONS=238} [2022-07-12 10:25:17,625 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 133 predicate places. [2022-07-12 10:25:17,626 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 238 transitions, 1765 flow [2022-07-12 10:25:17,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:17,626 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:17,626 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:17,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:25:17,627 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:17,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1455674899, now seen corresponding path program 10 times [2022-07-12 10:25:17,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:17,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293449816] [2022-07-12 10:25:17,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:17,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:17,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:17,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:17,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293449816] [2022-07-12 10:25:17,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293449816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:17,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:17,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:17,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159746445] [2022-07-12 10:25:17,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:17,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:17,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:17,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:17,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:17,746 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:17,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 238 transitions, 1765 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:17,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:17,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:17,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:18,080 INFO L129 PetriNetUnfolder]: 133/862 cut-off events. [2022-07-12 10:25:18,080 INFO L130 PetriNetUnfolder]: For 4303/4328 co-relation queries the response was YES. [2022-07-12 10:25:18,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3092 conditions, 862 events. 133/862 cut-off events. For 4303/4328 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5267 event pairs, 63 based on Foata normal form. 11/845 useless extension candidates. Maximal degree in co-relation 3006. Up to 259 conditions per place. [2022-07-12 10:25:18,091 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 82 selfloop transitions, 21 changer transitions 31/263 dead transitions. [2022-07-12 10:25:18,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 263 transitions, 2299 flow [2022-07-12 10:25:18,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:25:18,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:25:18,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2201 transitions. [2022-07-12 10:25:18,097 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7816051136363636 [2022-07-12 10:25:18,097 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2201 transitions. [2022-07-12 10:25:18,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2201 transitions. [2022-07-12 10:25:18,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:18,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2201 transitions. [2022-07-12 10:25:18,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.5625) internal successors, (2201), 16 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:18,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:18,106 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:18,107 INFO L186 Difference]: Start difference. First operand has 292 places, 238 transitions, 1765 flow. Second operand 16 states and 2201 transitions. [2022-07-12 10:25:18,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 263 transitions, 2299 flow [2022-07-12 10:25:18,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 263 transitions, 2194 flow, removed 31 selfloop flow, removed 12 redundant places. [2022-07-12 10:25:18,141 INFO L242 Difference]: Finished difference. Result has 288 places, 222 transitions, 1469 flow [2022-07-12 10:25:18,142 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1469, PETRI_PLACES=288, PETRI_TRANSITIONS=222} [2022-07-12 10:25:18,142 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 129 predicate places. [2022-07-12 10:25:18,142 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 222 transitions, 1469 flow [2022-07-12 10:25:18,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:18,143 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:18,143 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] [2022-07-12 10:25:18,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:25:18,144 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:18,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:18,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1878967331, now seen corresponding path program 11 times [2022-07-12 10:25:18,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:18,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380936003] [2022-07-12 10:25:18,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:18,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:18,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:18,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380936003] [2022-07-12 10:25:18,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380936003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:18,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:18,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:18,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201525411] [2022-07-12 10:25:18,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:18,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:18,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:18,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:18,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:18,261 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:18,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 222 transitions, 1469 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:18,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:18,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:18,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:18,616 INFO L129 PetriNetUnfolder]: 130/845 cut-off events. [2022-07-12 10:25:18,616 INFO L130 PetriNetUnfolder]: For 4148/4180 co-relation queries the response was YES. [2022-07-12 10:25:18,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3010 conditions, 845 events. 130/845 cut-off events. For 4148/4180 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5084 event pairs, 65 based on Foata normal form. 11/827 useless extension candidates. Maximal degree in co-relation 2945. Up to 252 conditions per place. [2022-07-12 10:25:18,627 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 76 selfloop transitions, 25 changer transitions 30/260 dead transitions. [2022-07-12 10:25:18,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 260 transitions, 2232 flow [2022-07-12 10:25:18,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:18,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:18,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2481 transitions. [2022-07-12 10:25:18,635 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7831439393939394 [2022-07-12 10:25:18,635 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2481 transitions. [2022-07-12 10:25:18,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2481 transitions. [2022-07-12 10:25:18,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:18,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2481 transitions. [2022-07-12 10:25:18,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.83333333333334) internal successors, (2481), 18 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:18,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:18,644 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:18,644 INFO L186 Difference]: Start difference. First operand has 288 places, 222 transitions, 1469 flow. Second operand 18 states and 2481 transitions. [2022-07-12 10:25:18,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 260 transitions, 2232 flow [2022-07-12 10:25:18,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 260 transitions, 2116 flow, removed 16 selfloop flow, removed 13 redundant places. [2022-07-12 10:25:18,673 INFO L242 Difference]: Finished difference. Result has 278 places, 224 transitions, 1512 flow [2022-07-12 10:25:18,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1512, PETRI_PLACES=278, PETRI_TRANSITIONS=224} [2022-07-12 10:25:18,674 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 119 predicate places. [2022-07-12 10:25:18,674 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 224 transitions, 1512 flow [2022-07-12 10:25:18,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:18,675 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:18,675 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] [2022-07-12 10:25:18,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:25:18,676 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:18,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:18,676 INFO L85 PathProgramCache]: Analyzing trace with hash 279000489, now seen corresponding path program 12 times [2022-07-12 10:25:18,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:18,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427416739] [2022-07-12 10:25:18,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:18,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:18,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:18,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427416739] [2022-07-12 10:25:18,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427416739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:18,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:18,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488849010] [2022-07-12 10:25:18,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:18,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:18,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:18,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:18,795 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:18,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 224 transitions, 1512 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:18,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:18,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:18,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:19,134 INFO L129 PetriNetUnfolder]: 122/823 cut-off events. [2022-07-12 10:25:19,134 INFO L130 PetriNetUnfolder]: For 3531/3554 co-relation queries the response was YES. [2022-07-12 10:25:19,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 823 events. 122/823 cut-off events. For 3531/3554 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4912 event pairs, 67 based on Foata normal form. 9/802 useless extension candidates. Maximal degree in co-relation 2757. Up to 249 conditions per place. [2022-07-12 10:25:19,144 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 74 selfloop transitions, 16 changer transitions 30/249 dead transitions. [2022-07-12 10:25:19,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 249 transitions, 2027 flow [2022-07-12 10:25:19,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:19,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2340 transitions. [2022-07-12 10:25:19,149 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7820855614973262 [2022-07-12 10:25:19,149 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2340 transitions. [2022-07-12 10:25:19,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2340 transitions. [2022-07-12 10:25:19,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:19,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2340 transitions. [2022-07-12 10:25:19,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.64705882352942) internal successors, (2340), 17 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:19,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:19,160 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:19,160 INFO L186 Difference]: Start difference. First operand has 278 places, 224 transitions, 1512 flow. Second operand 17 states and 2340 transitions. [2022-07-12 10:25:19,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 249 transitions, 2027 flow [2022-07-12 10:25:19,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 249 transitions, 1908 flow, removed 34 selfloop flow, removed 8 redundant places. [2022-07-12 10:25:19,208 INFO L242 Difference]: Finished difference. Result has 284 places, 215 transitions, 1318 flow [2022-07-12 10:25:19,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1318, PETRI_PLACES=284, PETRI_TRANSITIONS=215} [2022-07-12 10:25:19,210 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 125 predicate places. [2022-07-12 10:25:19,210 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 215 transitions, 1318 flow [2022-07-12 10:25:19,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:19,211 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:19,211 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] [2022-07-12 10:25:19,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 10:25:19,212 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:19,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:19,213 INFO L85 PathProgramCache]: Analyzing trace with hash -156541461, now seen corresponding path program 13 times [2022-07-12 10:25:19,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:19,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218602810] [2022-07-12 10:25:19,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:19,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:19,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:19,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218602810] [2022-07-12 10:25:19,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218602810] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:19,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:19,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:19,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510205069] [2022-07-12 10:25:19,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:19,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:19,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:19,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:19,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:19,312 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:19,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 215 transitions, 1318 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:19,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:19,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:19,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:19,599 INFO L129 PetriNetUnfolder]: 109/760 cut-off events. [2022-07-12 10:25:19,599 INFO L130 PetriNetUnfolder]: For 2786/2809 co-relation queries the response was YES. [2022-07-12 10:25:19,604 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2473 conditions, 760 events. 109/760 cut-off events. For 2786/2809 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4356 event pairs, 62 based on Foata normal form. 9/741 useless extension candidates. Maximal degree in co-relation 2409. Up to 237 conditions per place. [2022-07-12 10:25:19,614 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 64 selfloop transitions, 5 changer transitions 33/231 dead transitions. [2022-07-12 10:25:19,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 231 transitions, 1643 flow [2022-07-12 10:25:19,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:19,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:19,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2465 transitions. [2022-07-12 10:25:19,617 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7780934343434344 [2022-07-12 10:25:19,617 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2465 transitions. [2022-07-12 10:25:19,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2465 transitions. [2022-07-12 10:25:19,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:19,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2465 transitions. [2022-07-12 10:25:19,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.94444444444446) internal successors, (2465), 18 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:19,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:19,625 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:19,625 INFO L186 Difference]: Start difference. First operand has 284 places, 215 transitions, 1318 flow. Second operand 18 states and 2465 transitions. [2022-07-12 10:25:19,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 231 transitions, 1643 flow [2022-07-12 10:25:19,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 231 transitions, 1529 flow, removed 16 selfloop flow, removed 20 redundant places. [2022-07-12 10:25:19,648 INFO L242 Difference]: Finished difference. Result has 270 places, 195 transitions, 962 flow [2022-07-12 10:25:19,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=962, PETRI_PLACES=270, PETRI_TRANSITIONS=195} [2022-07-12 10:25:19,649 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 111 predicate places. [2022-07-12 10:25:19,649 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 195 transitions, 962 flow [2022-07-12 10:25:19,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:19,649 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:19,650 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] [2022-07-12 10:25:19,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 10:25:19,650 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:19,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:19,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1718238291, now seen corresponding path program 14 times [2022-07-12 10:25:19,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:19,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966399372] [2022-07-12 10:25:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:19,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:19,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:19,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966399372] [2022-07-12 10:25:19,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966399372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:19,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:19,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:19,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136333047] [2022-07-12 10:25:19,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:19,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:19,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:19,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:19,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:19,738 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:19,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 195 transitions, 962 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:19,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:19,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:19,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:20,107 INFO L129 PetriNetUnfolder]: 113/780 cut-off events. [2022-07-12 10:25:20,108 INFO L130 PetriNetUnfolder]: For 2591/2611 co-relation queries the response was YES. [2022-07-12 10:25:20,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2482 conditions, 780 events. 113/780 cut-off events. For 2591/2611 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4553 event pairs, 60 based on Foata normal form. 9/762 useless extension candidates. Maximal degree in co-relation 2424. Up to 212 conditions per place. [2022-07-12 10:25:20,115 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 59 selfloop transitions, 22 changer transitions 34/244 dead transitions. [2022-07-12 10:25:20,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 244 transitions, 1745 flow [2022-07-12 10:25:20,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:25:20,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:25:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3017 transitions. [2022-07-12 10:25:20,118 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7791838842975206 [2022-07-12 10:25:20,118 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3017 transitions. [2022-07-12 10:25:20,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3017 transitions. [2022-07-12 10:25:20,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:20,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3017 transitions. [2022-07-12 10:25:20,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.13636363636363) internal successors, (3017), 22 states have internal predecessors, (3017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:20,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:20,129 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:20,129 INFO L186 Difference]: Start difference. First operand has 270 places, 195 transitions, 962 flow. Second operand 22 states and 3017 transitions. [2022-07-12 10:25:20,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 244 transitions, 1745 flow [2022-07-12 10:25:20,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 244 transitions, 1589 flow, removed 39 selfloop flow, removed 19 redundant places. [2022-07-12 10:25:20,146 INFO L242 Difference]: Finished difference. Result has 258 places, 200 transitions, 1043 flow [2022-07-12 10:25:20,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1043, PETRI_PLACES=258, PETRI_TRANSITIONS=200} [2022-07-12 10:25:20,147 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 99 predicate places. [2022-07-12 10:25:20,147 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 200 transitions, 1043 flow [2022-07-12 10:25:20,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:20,148 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:20,148 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:20,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 10:25:20,148 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:20,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:20,149 INFO L85 PathProgramCache]: Analyzing trace with hash -60478949, now seen corresponding path program 15 times [2022-07-12 10:25:20,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:20,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105230636] [2022-07-12 10:25:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:20,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:20,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:20,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105230636] [2022-07-12 10:25:20,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105230636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:20,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:20,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:20,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713277512] [2022-07-12 10:25:20,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:20,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:20,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:20,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:20,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:20,280 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:20,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 200 transitions, 1043 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:20,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:20,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:20,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:20,583 INFO L129 PetriNetUnfolder]: 114/791 cut-off events. [2022-07-12 10:25:20,583 INFO L130 PetriNetUnfolder]: For 2859/2879 co-relation queries the response was YES. [2022-07-12 10:25:20,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2561 conditions, 791 events. 114/791 cut-off events. For 2859/2879 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4699 event pairs, 57 based on Foata normal form. 9/774 useless extension candidates. Maximal degree in co-relation 2504. Up to 218 conditions per place. [2022-07-12 10:25:20,591 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 60 selfloop transitions, 27 changer transitions 27/243 dead transitions. [2022-07-12 10:25:20,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 243 transitions, 1780 flow [2022-07-12 10:25:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:20,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2342 transitions. [2022-07-12 10:25:20,595 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7827540106951871 [2022-07-12 10:25:20,595 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2342 transitions. [2022-07-12 10:25:20,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2342 transitions. [2022-07-12 10:25:20,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:20,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2342 transitions. [2022-07-12 10:25:20,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.76470588235293) internal successors, (2342), 17 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:20,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:20,602 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:20,602 INFO L186 Difference]: Start difference. First operand has 258 places, 200 transitions, 1043 flow. Second operand 17 states and 2342 transitions. [2022-07-12 10:25:20,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 243 transitions, 1780 flow [2022-07-12 10:25:20,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 243 transitions, 1688 flow, removed 33 selfloop flow, removed 13 redundant places. [2022-07-12 10:25:20,621 INFO L242 Difference]: Finished difference. Result has 257 places, 208 transitions, 1208 flow [2022-07-12 10:25:20,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1208, PETRI_PLACES=257, PETRI_TRANSITIONS=208} [2022-07-12 10:25:20,622 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 98 predicate places. [2022-07-12 10:25:20,622 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 208 transitions, 1208 flow [2022-07-12 10:25:20,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:20,622 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:20,623 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] [2022-07-12 10:25:20,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 10:25:20,623 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:20,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:20,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1771188031, now seen corresponding path program 16 times [2022-07-12 10:25:20,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:20,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936984916] [2022-07-12 10:25:20,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:20,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:20,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:20,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936984916] [2022-07-12 10:25:20,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936984916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:20,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:20,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:20,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859570854] [2022-07-12 10:25:20,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:20,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:20,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:20,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:20,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:20,731 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:20,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 208 transitions, 1208 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:20,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:20,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:20,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:21,057 INFO L129 PetriNetUnfolder]: 103/750 cut-off events. [2022-07-12 10:25:21,057 INFO L130 PetriNetUnfolder]: For 2379/2399 co-relation queries the response was YES. [2022-07-12 10:25:21,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2372 conditions, 750 events. 103/750 cut-off events. For 2379/2399 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4334 event pairs, 59 based on Foata normal form. 9/732 useless extension candidates. Maximal degree in co-relation 2316. Up to 213 conditions per place. [2022-07-12 10:25:21,064 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 57 selfloop transitions, 13 changer transitions 33/232 dead transitions. [2022-07-12 10:25:21,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 232 transitions, 1628 flow [2022-07-12 10:25:21,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:21,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:21,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2471 transitions. [2022-07-12 10:25:21,067 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7799873737373737 [2022-07-12 10:25:21,067 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2471 transitions. [2022-07-12 10:25:21,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2471 transitions. [2022-07-12 10:25:21,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:21,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2471 transitions. [2022-07-12 10:25:21,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.27777777777777) internal successors, (2471), 18 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:21,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:21,075 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:21,075 INFO L186 Difference]: Start difference. First operand has 257 places, 208 transitions, 1208 flow. Second operand 18 states and 2471 transitions. [2022-07-12 10:25:21,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 232 transitions, 1628 flow [2022-07-12 10:25:21,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 232 transitions, 1518 flow, removed 33 selfloop flow, removed 9 redundant places. [2022-07-12 10:25:21,095 INFO L242 Difference]: Finished difference. Result has 264 places, 193 transitions, 948 flow [2022-07-12 10:25:21,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=948, PETRI_PLACES=264, PETRI_TRANSITIONS=193} [2022-07-12 10:25:21,095 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 105 predicate places. [2022-07-12 10:25:21,096 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 193 transitions, 948 flow [2022-07-12 10:25:21,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:21,096 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:21,096 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] [2022-07-12 10:25:21,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 10:25:21,097 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:21,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:21,097 INFO L85 PathProgramCache]: Analyzing trace with hash -603979919, now seen corresponding path program 17 times [2022-07-12 10:25:21,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:21,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323807374] [2022-07-12 10:25:21,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:21,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:21,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:21,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:21,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323807374] [2022-07-12 10:25:21,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323807374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:21,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:21,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:21,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098720350] [2022-07-12 10:25:21,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:21,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:21,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:21,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:21,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:21,196 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:21,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 193 transitions, 948 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:21,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:21,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:21,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:21,519 INFO L129 PetriNetUnfolder]: 102/742 cut-off events. [2022-07-12 10:25:21,519 INFO L130 PetriNetUnfolder]: For 2666/2686 co-relation queries the response was YES. [2022-07-12 10:25:21,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 742 events. 102/742 cut-off events. For 2666/2686 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4282 event pairs, 57 based on Foata normal form. 9/725 useless extension candidates. Maximal degree in co-relation 2297. Up to 204 conditions per place. [2022-07-12 10:25:21,527 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 53 selfloop transitions, 19 changer transitions 34/235 dead transitions. [2022-07-12 10:25:21,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 235 transitions, 1724 flow [2022-07-12 10:25:21,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:25:21,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:25:21,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2880 transitions. [2022-07-12 10:25:21,530 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7792207792207793 [2022-07-12 10:25:21,530 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2880 transitions. [2022-07-12 10:25:21,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2880 transitions. [2022-07-12 10:25:21,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:21,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2880 transitions. [2022-07-12 10:25:21,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.14285714285714) internal successors, (2880), 21 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:21,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:21,538 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:21,538 INFO L186 Difference]: Start difference. First operand has 264 places, 193 transitions, 948 flow. Second operand 21 states and 2880 transitions. [2022-07-12 10:25:21,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 235 transitions, 1724 flow [2022-07-12 10:25:21,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 235 transitions, 1558 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-07-12 10:25:21,556 INFO L242 Difference]: Finished difference. Result has 256 places, 196 transitions, 1015 flow [2022-07-12 10:25:21,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1015, PETRI_PLACES=256, PETRI_TRANSITIONS=196} [2022-07-12 10:25:21,557 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 97 predicate places. [2022-07-12 10:25:21,557 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 196 transitions, 1015 flow [2022-07-12 10:25:21,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:21,558 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:21,558 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] [2022-07-12 10:25:21,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 10:25:21,558 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:21,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:21,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1772295727, now seen corresponding path program 18 times [2022-07-12 10:25:21,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:21,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971956976] [2022-07-12 10:25:21,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:21,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:21,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:21,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:21,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971956976] [2022-07-12 10:25:21,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971956976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:21,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:21,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:21,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344599294] [2022-07-12 10:25:21,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:21,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:21,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:21,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:21,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:21,669 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:21,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 196 transitions, 1015 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:21,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:21,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:21,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:21,990 INFO L129 PetriNetUnfolder]: 96/717 cut-off events. [2022-07-12 10:25:21,991 INFO L130 PetriNetUnfolder]: For 2281/2301 co-relation queries the response was YES. [2022-07-12 10:25:21,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2228 conditions, 717 events. 96/717 cut-off events. For 2281/2301 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4060 event pairs, 59 based on Foata normal form. 9/700 useless extension candidates. Maximal degree in co-relation 2171. Up to 208 conditions per place. [2022-07-12 10:25:21,998 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 49 selfloop transitions, 21 changer transitions 30/229 dead transitions. [2022-07-12 10:25:21,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 229 transitions, 1631 flow [2022-07-12 10:25:21,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:21,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:22,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2475 transitions. [2022-07-12 10:25:22,003 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.78125 [2022-07-12 10:25:22,003 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2475 transitions. [2022-07-12 10:25:22,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2475 transitions. [2022-07-12 10:25:22,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:22,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2475 transitions. [2022-07-12 10:25:22,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.5) internal successors, (2475), 18 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,014 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,014 INFO L186 Difference]: Start difference. First operand has 256 places, 196 transitions, 1015 flow. Second operand 18 states and 2475 transitions. [2022-07-12 10:25:22,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 229 transitions, 1631 flow [2022-07-12 10:25:22,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 229 transitions, 1476 flow, removed 59 selfloop flow, removed 15 redundant places. [2022-07-12 10:25:22,030 INFO L242 Difference]: Finished difference. Result has 250 places, 197 transitions, 1033 flow [2022-07-12 10:25:22,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1033, PETRI_PLACES=250, PETRI_TRANSITIONS=197} [2022-07-12 10:25:22,031 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 91 predicate places. [2022-07-12 10:25:22,031 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 197 transitions, 1033 flow [2022-07-12 10:25:22,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,032 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:22,032 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:22,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 10:25:22,032 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:22,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1691963201, now seen corresponding path program 19 times [2022-07-12 10:25:22,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:22,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942493382] [2022-07-12 10:25:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:22,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:22,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:22,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942493382] [2022-07-12 10:25:22,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942493382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:22,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:22,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:22,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514483967] [2022-07-12 10:25:22,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:22,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:22,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:22,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:22,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:22,142 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:22,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 197 transitions, 1033 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:22,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:22,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:22,442 INFO L129 PetriNetUnfolder]: 93/706 cut-off events. [2022-07-12 10:25:22,442 INFO L130 PetriNetUnfolder]: For 1769/1789 co-relation queries the response was YES. [2022-07-12 10:25:22,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 706 events. 93/706 cut-off events. For 1769/1789 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3921 event pairs, 57 based on Foata normal form. 9/690 useless extension candidates. Maximal degree in co-relation 2028. Up to 207 conditions per place. [2022-07-12 10:25:22,449 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 48 selfloop transitions, 12 changer transitions 33/222 dead transitions. [2022-07-12 10:25:22,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 222 transitions, 1422 flow [2022-07-12 10:25:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:22,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:22,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2338 transitions. [2022-07-12 10:25:22,452 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7814171122994652 [2022-07-12 10:25:22,452 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2338 transitions. [2022-07-12 10:25:22,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2338 transitions. [2022-07-12 10:25:22,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:22,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2338 transitions. [2022-07-12 10:25:22,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.52941176470588) internal successors, (2338), 17 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,461 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,461 INFO L186 Difference]: Start difference. First operand has 250 places, 197 transitions, 1033 flow. Second operand 17 states and 2338 transitions. [2022-07-12 10:25:22,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 222 transitions, 1422 flow [2022-07-12 10:25:22,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 222 transitions, 1270 flow, removed 43 selfloop flow, removed 11 redundant places. [2022-07-12 10:25:22,475 INFO L242 Difference]: Finished difference. Result has 253 places, 188 transitions, 836 flow [2022-07-12 10:25:22,476 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=836, PETRI_PLACES=253, PETRI_TRANSITIONS=188} [2022-07-12 10:25:22,476 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2022-07-12 10:25:22,477 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 188 transitions, 836 flow [2022-07-12 10:25:22,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,477 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:22,477 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] [2022-07-12 10:25:22,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 10:25:22,478 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:22,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:22,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1710327599, now seen corresponding path program 20 times [2022-07-12 10:25:22,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:22,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137489945] [2022-07-12 10:25:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:22,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:22,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:22,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137489945] [2022-07-12 10:25:22,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137489945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:22,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:22,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:22,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587092163] [2022-07-12 10:25:22,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:22,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:22,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:22,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:22,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:22,571 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:22,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 188 transitions, 836 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:22,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:22,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:22,864 INFO L129 PetriNetUnfolder]: 79/619 cut-off events. [2022-07-12 10:25:22,865 INFO L130 PetriNetUnfolder]: For 1178/1198 co-relation queries the response was YES. [2022-07-12 10:25:22,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 619 events. 79/619 cut-off events. For 1178/1198 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3239 event pairs, 54 based on Foata normal form. 9/603 useless extension candidates. Maximal degree in co-relation 1637. Up to 187 conditions per place. [2022-07-12 10:25:22,870 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 34 selfloop transitions, 0 changer transitions 45/202 dead transitions. [2022-07-12 10:25:22,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 202 transitions, 1041 flow [2022-07-12 10:25:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:22,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2462 transitions. [2022-07-12 10:25:22,873 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7771464646464646 [2022-07-12 10:25:22,873 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2462 transitions. [2022-07-12 10:25:22,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2462 transitions. [2022-07-12 10:25:22,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:22,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2462 transitions. [2022-07-12 10:25:22,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.77777777777777) internal successors, (2462), 18 states have internal predecessors, (2462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,880 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,880 INFO L186 Difference]: Start difference. First operand has 253 places, 188 transitions, 836 flow. Second operand 18 states and 2462 transitions. [2022-07-12 10:25:22,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 202 transitions, 1041 flow [2022-07-12 10:25:22,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 202 transitions, 955 flow, removed 18 selfloop flow, removed 18 redundant places. [2022-07-12 10:25:22,890 INFO L242 Difference]: Finished difference. Result has 239 places, 157 transitions, 486 flow [2022-07-12 10:25:22,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=486, PETRI_PLACES=239, PETRI_TRANSITIONS=157} [2022-07-12 10:25:22,891 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 80 predicate places. [2022-07-12 10:25:22,891 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 157 transitions, 486 flow [2022-07-12 10:25:22,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,892 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:22,892 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] [2022-07-12 10:25:22,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 10:25:22,892 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1228416663, now seen corresponding path program 2 times [2022-07-12 10:25:22,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:22,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403851301] [2022-07-12 10:25:22,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:22,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:22,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:22,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403851301] [2022-07-12 10:25:22,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403851301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:22,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:22,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:22,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762663109] [2022-07-12 10:25:22,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:22,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:22,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:22,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:22,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:22,989 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:22,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 157 transitions, 486 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:22,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:22,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:22,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:23,265 INFO L129 PetriNetUnfolder]: 90/605 cut-off events. [2022-07-12 10:25:23,266 INFO L130 PetriNetUnfolder]: For 942/947 co-relation queries the response was YES. [2022-07-12 10:25:23,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 605 events. 90/605 cut-off events. For 942/947 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2986 event pairs, 40 based on Foata normal form. 1/584 useless extension candidates. Maximal degree in co-relation 1514. Up to 142 conditions per place. [2022-07-12 10:25:23,270 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 52 selfloop transitions, 14 changer transitions 22/208 dead transitions. [2022-07-12 10:25:23,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 208 transitions, 1007 flow [2022-07-12 10:25:23,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:25:23,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:25:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2206 transitions. [2022-07-12 10:25:23,275 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7833806818181818 [2022-07-12 10:25:23,275 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2206 transitions. [2022-07-12 10:25:23,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2206 transitions. [2022-07-12 10:25:23,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:23,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2206 transitions. [2022-07-12 10:25:23,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.875) internal successors, (2206), 16 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,291 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,291 INFO L186 Difference]: Start difference. First operand has 239 places, 157 transitions, 486 flow. Second operand 16 states and 2206 transitions. [2022-07-12 10:25:23,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 208 transitions, 1007 flow [2022-07-12 10:25:23,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 208 transitions, 951 flow, removed 27 selfloop flow, removed 10 redundant places. [2022-07-12 10:25:23,299 INFO L242 Difference]: Finished difference. Result has 216 places, 169 transitions, 635 flow [2022-07-12 10:25:23,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=635, PETRI_PLACES=216, PETRI_TRANSITIONS=169} [2022-07-12 10:25:23,301 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 57 predicate places. [2022-07-12 10:25:23,301 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 169 transitions, 635 flow [2022-07-12 10:25:23,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,302 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:23,302 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] [2022-07-12 10:25:23,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 10:25:23,302 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:23,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:23,303 INFO L85 PathProgramCache]: Analyzing trace with hash 737561389, now seen corresponding path program 3 times [2022-07-12 10:25:23,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:23,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806205963] [2022-07-12 10:25:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:23,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:23,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:23,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806205963] [2022-07-12 10:25:23,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806205963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:23,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:23,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:23,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069931725] [2022-07-12 10:25:23,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:23,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:23,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:23,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:23,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:23,399 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:23,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 169 transitions, 635 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:23,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:23,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:23,672 INFO L129 PetriNetUnfolder]: 93/609 cut-off events. [2022-07-12 10:25:23,672 INFO L130 PetriNetUnfolder]: For 1439/1444 co-relation queries the response was YES. [2022-07-12 10:25:23,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 609 events. 93/609 cut-off events. For 1439/1444 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3060 event pairs, 38 based on Foata normal form. 1/592 useless extension candidates. Maximal degree in co-relation 1688. Up to 151 conditions per place. [2022-07-12 10:25:23,678 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 56 selfloop transitions, 18 changer transitions 19/213 dead transitions. [2022-07-12 10:25:23,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 213 transitions, 1227 flow [2022-07-12 10:25:23,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:25:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:25:23,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2204 transitions. [2022-07-12 10:25:23,680 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7826704545454546 [2022-07-12 10:25:23,680 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2204 transitions. [2022-07-12 10:25:23,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2204 transitions. [2022-07-12 10:25:23,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:23,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2204 transitions. [2022-07-12 10:25:23,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.75) internal successors, (2204), 16 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,690 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,690 INFO L186 Difference]: Start difference. First operand has 216 places, 169 transitions, 635 flow. Second operand 16 states and 2204 transitions. [2022-07-12 10:25:23,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 213 transitions, 1227 flow [2022-07-12 10:25:23,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 213 transitions, 1099 flow, removed 63 selfloop flow, removed 7 redundant places. [2022-07-12 10:25:23,701 INFO L242 Difference]: Finished difference. Result has 228 places, 179 transitions, 754 flow [2022-07-12 10:25:23,702 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=754, PETRI_PLACES=228, PETRI_TRANSITIONS=179} [2022-07-12 10:25:23,705 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 69 predicate places. [2022-07-12 10:25:23,706 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 179 transitions, 754 flow [2022-07-12 10:25:23,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,706 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:23,707 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] [2022-07-12 10:25:23,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 10:25:23,707 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:23,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:23,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1951205417, now seen corresponding path program 4 times [2022-07-12 10:25:23,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:23,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372409301] [2022-07-12 10:25:23,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:23,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:23,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:23,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372409301] [2022-07-12 10:25:23,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372409301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:23,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:23,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:23,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20290999] [2022-07-12 10:25:23,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:23,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:23,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:23,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:23,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:23,810 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:23,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 179 transitions, 754 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:23,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:23,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:23,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:24,168 INFO L129 PetriNetUnfolder]: 118/690 cut-off events. [2022-07-12 10:25:24,168 INFO L130 PetriNetUnfolder]: For 2042/2050 co-relation queries the response was YES. [2022-07-12 10:25:24,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 690 events. 118/690 cut-off events. For 2042/2050 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3601 event pairs, 54 based on Foata normal form. 1/670 useless extension candidates. Maximal degree in co-relation 2113. Up to 151 conditions per place. [2022-07-12 10:25:24,175 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 70 selfloop transitions, 20 changer transitions 29/239 dead transitions. [2022-07-12 10:25:24,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 239 transitions, 1596 flow [2022-07-12 10:25:24,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:25:24,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:25:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2750 transitions. [2022-07-12 10:25:24,178 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.78125 [2022-07-12 10:25:24,178 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2750 transitions. [2022-07-12 10:25:24,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2750 transitions. [2022-07-12 10:25:24,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:24,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2750 transitions. [2022-07-12 10:25:24,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.5) internal successors, (2750), 20 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,185 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,185 INFO L186 Difference]: Start difference. First operand has 228 places, 179 transitions, 754 flow. Second operand 20 states and 2750 transitions. [2022-07-12 10:25:24,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 239 transitions, 1596 flow [2022-07-12 10:25:24,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 239 transitions, 1473 flow, removed 41 selfloop flow, removed 8 redundant places. [2022-07-12 10:25:24,198 INFO L242 Difference]: Finished difference. Result has 249 places, 190 transitions, 914 flow [2022-07-12 10:25:24,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=914, PETRI_PLACES=249, PETRI_TRANSITIONS=190} [2022-07-12 10:25:24,199 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-07-12 10:25:24,199 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 190 transitions, 914 flow [2022-07-12 10:25:24,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,199 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:24,200 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] [2022-07-12 10:25:24,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 10:25:24,200 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:24,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:24,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1904803889, now seen corresponding path program 5 times [2022-07-12 10:25:24,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:24,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198482733] [2022-07-12 10:25:24,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:24,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:24,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:24,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198482733] [2022-07-12 10:25:24,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198482733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:24,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:24,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:24,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236244631] [2022-07-12 10:25:24,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:24,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:24,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:24,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:24,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:24,306 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:24,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 190 transitions, 914 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:24,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:24,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:24,721 INFO L129 PetriNetUnfolder]: 113/672 cut-off events. [2022-07-12 10:25:24,722 INFO L130 PetriNetUnfolder]: For 3092/3103 co-relation queries the response was YES. [2022-07-12 10:25:24,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2350 conditions, 672 events. 113/672 cut-off events. For 3092/3103 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3526 event pairs, 39 based on Foata normal form. 1/652 useless extension candidates. Maximal degree in co-relation 2286. Up to 113 conditions per place. [2022-07-12 10:25:24,729 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 94 selfloop transitions, 21 changer transitions 38/273 dead transitions. [2022-07-12 10:25:24,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 273 transitions, 2069 flow [2022-07-12 10:25:24,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:25:24,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:25:24,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3298 transitions. [2022-07-12 10:25:24,732 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7807765151515151 [2022-07-12 10:25:24,732 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3298 transitions. [2022-07-12 10:25:24,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3298 transitions. [2022-07-12 10:25:24,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:24,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3298 transitions. [2022-07-12 10:25:24,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.41666666666666) internal successors, (3298), 24 states have internal predecessors, (3298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,741 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,741 INFO L186 Difference]: Start difference. First operand has 249 places, 190 transitions, 914 flow. Second operand 24 states and 3298 transitions. [2022-07-12 10:25:24,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 273 transitions, 2069 flow [2022-07-12 10:25:24,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 273 transitions, 1907 flow, removed 74 selfloop flow, removed 10 redundant places. [2022-07-12 10:25:24,761 INFO L242 Difference]: Finished difference. Result has 269 places, 192 transitions, 1002 flow [2022-07-12 10:25:24,761 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1002, PETRI_PLACES=269, PETRI_TRANSITIONS=192} [2022-07-12 10:25:24,762 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2022-07-12 10:25:24,762 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 192 transitions, 1002 flow [2022-07-12 10:25:24,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,762 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:24,763 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] [2022-07-12 10:25:24,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 10:25:24,763 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:24,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:24,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1901576121, now seen corresponding path program 6 times [2022-07-12 10:25:24,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:24,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429433683] [2022-07-12 10:25:24,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:24,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:24,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:24,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429433683] [2022-07-12 10:25:24,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429433683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:24,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:24,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:24,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068010359] [2022-07-12 10:25:24,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:24,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:24,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:24,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:24,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:24,870 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:24,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 192 transitions, 1002 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:24,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:24,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:24,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:25,267 INFO L129 PetriNetUnfolder]: 122/739 cut-off events. [2022-07-12 10:25:25,267 INFO L130 PetriNetUnfolder]: For 3969/3978 co-relation queries the response was YES. [2022-07-12 10:25:25,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 739 events. 122/739 cut-off events. For 3969/3978 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4115 event pairs, 44 based on Foata normal form. 3/722 useless extension candidates. Maximal degree in co-relation 2612. Up to 167 conditions per place. [2022-07-12 10:25:25,275 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 71 selfloop transitions, 22 changer transitions 29/242 dead transitions. [2022-07-12 10:25:25,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 242 transitions, 1877 flow [2022-07-12 10:25:25,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:25:25,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:25:25,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3015 transitions. [2022-07-12 10:25:25,280 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7786673553719008 [2022-07-12 10:25:25,280 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3015 transitions. [2022-07-12 10:25:25,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3015 transitions. [2022-07-12 10:25:25,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:25,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3015 transitions. [2022-07-12 10:25:25,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.04545454545453) internal successors, (3015), 22 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,288 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,288 INFO L186 Difference]: Start difference. First operand has 269 places, 192 transitions, 1002 flow. Second operand 22 states and 3015 transitions. [2022-07-12 10:25:25,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 242 transitions, 1877 flow [2022-07-12 10:25:25,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 242 transitions, 1750 flow, removed 38 selfloop flow, removed 18 redundant places. [2022-07-12 10:25:25,309 INFO L242 Difference]: Finished difference. Result has 270 places, 195 transitions, 1074 flow [2022-07-12 10:25:25,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1074, PETRI_PLACES=270, PETRI_TRANSITIONS=195} [2022-07-12 10:25:25,310 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 111 predicate places. [2022-07-12 10:25:25,310 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 195 transitions, 1074 flow [2022-07-12 10:25:25,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,310 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:25,310 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] [2022-07-12 10:25:25,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 10:25:25,311 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:25,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:25,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1112985117, now seen corresponding path program 7 times [2022-07-12 10:25:25,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:25,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167395711] [2022-07-12 10:25:25,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:25,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:25,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:25,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167395711] [2022-07-12 10:25:25,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167395711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:25,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:25,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:25,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615970870] [2022-07-12 10:25:25,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:25,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:25,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:25,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:25,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:25,419 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:25,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 195 transitions, 1074 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:25,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:25,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:25,740 INFO L129 PetriNetUnfolder]: 117/715 cut-off events. [2022-07-12 10:25:25,741 INFO L130 PetriNetUnfolder]: For 4829/4840 co-relation queries the response was YES. [2022-07-12 10:25:25,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2738 conditions, 715 events. 117/715 cut-off events. For 4829/4840 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3945 event pairs, 39 based on Foata normal form. 2/697 useless extension candidates. Maximal degree in co-relation 2664. Up to 163 conditions per place. [2022-07-12 10:25:25,748 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 83 selfloop transitions, 21 changer transitions 29/253 dead transitions. [2022-07-12 10:25:25,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 253 transitions, 2256 flow [2022-07-12 10:25:25,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:25:25,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:25:25,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2887 transitions. [2022-07-12 10:25:25,755 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7811147186147186 [2022-07-12 10:25:25,755 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2887 transitions. [2022-07-12 10:25:25,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2887 transitions. [2022-07-12 10:25:25,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:25,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2887 transitions. [2022-07-12 10:25:25,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.47619047619048) internal successors, (2887), 21 states have internal predecessors, (2887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,762 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,763 INFO L186 Difference]: Start difference. First operand has 270 places, 195 transitions, 1074 flow. Second operand 21 states and 2887 transitions. [2022-07-12 10:25:25,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 253 transitions, 2256 flow [2022-07-12 10:25:25,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 253 transitions, 2065 flow, removed 82 selfloop flow, removed 13 redundant places. [2022-07-12 10:25:25,788 INFO L242 Difference]: Finished difference. Result has 279 places, 205 transitions, 1294 flow [2022-07-12 10:25:25,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1294, PETRI_PLACES=279, PETRI_TRANSITIONS=205} [2022-07-12 10:25:25,789 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 120 predicate places. [2022-07-12 10:25:25,790 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 205 transitions, 1294 flow [2022-07-12 10:25:25,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,790 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:25,790 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] [2022-07-12 10:25:25,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 10:25:25,791 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:25,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:25,791 INFO L85 PathProgramCache]: Analyzing trace with hash 181054911, now seen corresponding path program 8 times [2022-07-12 10:25:25,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:25,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985486271] [2022-07-12 10:25:25,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:25,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:25,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:25,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985486271] [2022-07-12 10:25:25,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985486271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:25,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:25,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:25,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128738212] [2022-07-12 10:25:25,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:25,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:25,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:25,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:25,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:25,889 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:25,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 205 transitions, 1294 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:25,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:25,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:25,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:26,206 INFO L129 PetriNetUnfolder]: 107/708 cut-off events. [2022-07-12 10:25:26,208 INFO L130 PetriNetUnfolder]: For 5276/5293 co-relation queries the response was YES. [2022-07-12 10:25:26,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 708 events. 107/708 cut-off events. For 5276/5293 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3908 event pairs, 40 based on Foata normal form. 4/690 useless extension candidates. Maximal degree in co-relation 2651. Up to 172 conditions per place. [2022-07-12 10:25:26,217 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 77 selfloop transitions, 27 changer transitions 30/254 dead transitions. [2022-07-12 10:25:26,217 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 254 transitions, 2377 flow [2022-07-12 10:25:26,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:25:26,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:25:26,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2747 transitions. [2022-07-12 10:25:26,220 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7803977272727273 [2022-07-12 10:25:26,220 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2747 transitions. [2022-07-12 10:25:26,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2747 transitions. [2022-07-12 10:25:26,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:26,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2747 transitions. [2022-07-12 10:25:26,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.35) internal successors, (2747), 20 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,226 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,226 INFO L186 Difference]: Start difference. First operand has 279 places, 205 transitions, 1294 flow. Second operand 20 states and 2747 transitions. [2022-07-12 10:25:26,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 254 transitions, 2377 flow [2022-07-12 10:25:26,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 254 transitions, 2140 flow, removed 110 selfloop flow, removed 12 redundant places. [2022-07-12 10:25:26,253 INFO L242 Difference]: Finished difference. Result has 288 places, 213 transitions, 1448 flow [2022-07-12 10:25:26,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1448, PETRI_PLACES=288, PETRI_TRANSITIONS=213} [2022-07-12 10:25:26,254 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 129 predicate places. [2022-07-12 10:25:26,254 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 213 transitions, 1448 flow [2022-07-12 10:25:26,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,254 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:26,254 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] [2022-07-12 10:25:26,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 10:25:26,255 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:26,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:26,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1414141161, now seen corresponding path program 9 times [2022-07-12 10:25:26,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:26,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970104060] [2022-07-12 10:25:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:26,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:26,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:26,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:26,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970104060] [2022-07-12 10:25:26,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970104060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:26,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:26,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:26,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625050961] [2022-07-12 10:25:26,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:26,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:26,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:26,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:26,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:26,366 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:26,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 213 transitions, 1448 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:26,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:26,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:26,631 INFO L129 PetriNetUnfolder]: 94/653 cut-off events. [2022-07-12 10:25:26,631 INFO L130 PetriNetUnfolder]: For 4246/4255 co-relation queries the response was YES. [2022-07-12 10:25:26,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2433 conditions, 653 events. 94/653 cut-off events. For 4246/4255 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3428 event pairs, 33 based on Foata normal form. 3/636 useless extension candidates. Maximal degree in co-relation 2350. Up to 158 conditions per place. [2022-07-12 10:25:26,639 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 72 selfloop transitions, 18 changer transitions 30/240 dead transitions. [2022-07-12 10:25:26,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 240 transitions, 2074 flow [2022-07-12 10:25:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2467 transitions. [2022-07-12 10:25:26,642 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7787247474747475 [2022-07-12 10:25:26,642 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2467 transitions. [2022-07-12 10:25:26,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2467 transitions. [2022-07-12 10:25:26,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:26,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2467 transitions. [2022-07-12 10:25:26,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.05555555555554) internal successors, (2467), 18 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,648 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,648 INFO L186 Difference]: Start difference. First operand has 288 places, 213 transitions, 1448 flow. Second operand 18 states and 2467 transitions. [2022-07-12 10:25:26,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 240 transitions, 2074 flow [2022-07-12 10:25:26,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 240 transitions, 1884 flow, removed 70 selfloop flow, removed 16 redundant places. [2022-07-12 10:25:26,674 INFO L242 Difference]: Finished difference. Result has 284 places, 198 transitions, 1165 flow [2022-07-12 10:25:26,675 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1165, PETRI_PLACES=284, PETRI_TRANSITIONS=198} [2022-07-12 10:25:26,675 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 125 predicate places. [2022-07-12 10:25:26,675 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 198 transitions, 1165 flow [2022-07-12 10:25:26,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,676 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:26,676 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] [2022-07-12 10:25:26,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 10:25:26,676 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:26,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:26,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1457045623, now seen corresponding path program 10 times [2022-07-12 10:25:26,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:26,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537891776] [2022-07-12 10:25:26,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:26,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:26,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:26,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537891776] [2022-07-12 10:25:26,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537891776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:26,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:26,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:26,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799927916] [2022-07-12 10:25:26,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:26,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:26,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:26,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:26,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:26,763 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:26,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 198 transitions, 1165 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:26,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:26,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:26,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:27,076 INFO L129 PetriNetUnfolder]: 99/670 cut-off events. [2022-07-12 10:25:27,076 INFO L130 PetriNetUnfolder]: For 3956/3971 co-relation queries the response was YES. [2022-07-12 10:25:27,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2443 conditions, 670 events. 99/670 cut-off events. For 3956/3971 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3565 event pairs, 36 based on Foata normal form. 3/652 useless extension candidates. Maximal degree in co-relation 2367. Up to 160 conditions per place. [2022-07-12 10:25:27,084 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 71 selfloop transitions, 24 changer transitions 24/239 dead transitions. [2022-07-12 10:25:27,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 239 transitions, 1992 flow [2022-07-12 10:25:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:27,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:27,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2343 transitions. [2022-07-12 10:25:27,087 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7830882352941176 [2022-07-12 10:25:27,087 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2343 transitions. [2022-07-12 10:25:27,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2343 transitions. [2022-07-12 10:25:27,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:27,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2343 transitions. [2022-07-12 10:25:27,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.8235294117647) internal successors, (2343), 17 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,093 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,094 INFO L186 Difference]: Start difference. First operand has 284 places, 198 transitions, 1165 flow. Second operand 17 states and 2343 transitions. [2022-07-12 10:25:27,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 239 transitions, 1992 flow [2022-07-12 10:25:27,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 239 transitions, 1827 flow, removed 32 selfloop flow, removed 15 redundant places. [2022-07-12 10:25:27,115 INFO L242 Difference]: Finished difference. Result has 272 places, 206 transitions, 1296 flow [2022-07-12 10:25:27,116 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1296, PETRI_PLACES=272, PETRI_TRANSITIONS=206} [2022-07-12 10:25:27,116 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 113 predicate places. [2022-07-12 10:25:27,117 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 206 transitions, 1296 flow [2022-07-12 10:25:27,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,117 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:27,118 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] [2022-07-12 10:25:27,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-12 10:25:27,118 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:27,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:27,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1870034335, now seen corresponding path program 11 times [2022-07-12 10:25:27,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:27,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568804060] [2022-07-12 10:25:27,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:27,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:27,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:27,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568804060] [2022-07-12 10:25:27,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568804060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:27,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:27,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:27,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595454617] [2022-07-12 10:25:27,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:27,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:27,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:27,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:27,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:27,225 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:27,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 206 transitions, 1296 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:27,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:27,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:27,500 INFO L129 PetriNetUnfolder]: 96/674 cut-off events. [2022-07-12 10:25:27,500 INFO L130 PetriNetUnfolder]: For 3491/3498 co-relation queries the response was YES. [2022-07-12 10:25:27,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2411 conditions, 674 events. 96/674 cut-off events. For 3491/3498 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3594 event pairs, 39 based on Foata normal form. 1/654 useless extension candidates. Maximal degree in co-relation 2335. Up to 162 conditions per place. [2022-07-12 10:25:27,508 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 72 selfloop transitions, 27 changer transitions 24/243 dead transitions. [2022-07-12 10:25:27,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 243 transitions, 2090 flow [2022-07-12 10:25:27,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2341 transitions. [2022-07-12 10:25:27,511 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7824197860962567 [2022-07-12 10:25:27,511 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2341 transitions. [2022-07-12 10:25:27,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2341 transitions. [2022-07-12 10:25:27,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:27,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2341 transitions. [2022-07-12 10:25:27,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.7058823529412) internal successors, (2341), 17 states have internal predecessors, (2341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,517 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,517 INFO L186 Difference]: Start difference. First operand has 272 places, 206 transitions, 1296 flow. Second operand 17 states and 2341 transitions. [2022-07-12 10:25:27,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 243 transitions, 2090 flow [2022-07-12 10:25:27,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 243 transitions, 1968 flow, removed 35 selfloop flow, removed 10 redundant places. [2022-07-12 10:25:27,546 INFO L242 Difference]: Finished difference. Result has 280 places, 214 transitions, 1451 flow [2022-07-12 10:25:27,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1451, PETRI_PLACES=280, PETRI_TRANSITIONS=214} [2022-07-12 10:25:27,548 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 121 predicate places. [2022-07-12 10:25:27,548 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 214 transitions, 1451 flow [2022-07-12 10:25:27,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,549 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:27,549 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] [2022-07-12 10:25:27,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-12 10:25:27,549 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:27,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:27,550 INFO L85 PathProgramCache]: Analyzing trace with hash -264747361, now seen corresponding path program 12 times [2022-07-12 10:25:27,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:27,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666659523] [2022-07-12 10:25:27,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:27,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:27,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:27,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666659523] [2022-07-12 10:25:27,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666659523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:27,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:27,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:27,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053881798] [2022-07-12 10:25:27,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:27,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:27,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:27,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:27,637 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:27,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 214 transitions, 1451 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:27,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:27,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:27,923 INFO L129 PetriNetUnfolder]: 88/645 cut-off events. [2022-07-12 10:25:27,924 INFO L130 PetriNetUnfolder]: For 2921/2928 co-relation queries the response was YES. [2022-07-12 10:25:27,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2215 conditions, 645 events. 88/645 cut-off events. For 2921/2928 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3371 event pairs, 37 based on Foata normal form. 1/627 useless extension candidates. Maximal degree in co-relation 2136. Up to 154 conditions per place. [2022-07-12 10:25:27,931 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 69 selfloop transitions, 16 changer transitions 30/235 dead transitions. [2022-07-12 10:25:27,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 235 transitions, 1916 flow [2022-07-12 10:25:27,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:27,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:27,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2472 transitions. [2022-07-12 10:25:27,933 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7803030303030303 [2022-07-12 10:25:27,934 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2472 transitions. [2022-07-12 10:25:27,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2472 transitions. [2022-07-12 10:25:27,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:27,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2472 transitions. [2022-07-12 10:25:27,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.33333333333334) internal successors, (2472), 18 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,939 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,940 INFO L186 Difference]: Start difference. First operand has 280 places, 214 transitions, 1451 flow. Second operand 18 states and 2472 transitions. [2022-07-12 10:25:27,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 235 transitions, 1916 flow [2022-07-12 10:25:27,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 235 transitions, 1809 flow, removed 38 selfloop flow, removed 8 redundant places. [2022-07-12 10:25:27,963 INFO L242 Difference]: Finished difference. Result has 286 places, 200 transitions, 1180 flow [2022-07-12 10:25:27,964 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1180, PETRI_PLACES=286, PETRI_TRANSITIONS=200} [2022-07-12 10:25:27,965 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 127 predicate places. [2022-07-12 10:25:27,965 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 200 transitions, 1180 flow [2022-07-12 10:25:27,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:27,965 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:27,966 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] [2022-07-12 10:25:27,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-12 10:25:27,967 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:27,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:27,969 INFO L85 PathProgramCache]: Analyzing trace with hash -873208415, now seen corresponding path program 13 times [2022-07-12 10:25:27,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:27,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127059845] [2022-07-12 10:25:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:27,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:28,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:28,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:28,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127059845] [2022-07-12 10:25:28,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127059845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:28,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:28,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:28,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569601718] [2022-07-12 10:25:28,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:28,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:28,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:28,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:28,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:28,067 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:28,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 200 transitions, 1180 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:28,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:28,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:28,337 INFO L129 PetriNetUnfolder]: 75/576 cut-off events. [2022-07-12 10:25:28,338 INFO L130 PetriNetUnfolder]: For 2388/2403 co-relation queries the response was YES. [2022-07-12 10:25:28,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 576 events. 75/576 cut-off events. For 2388/2403 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2778 event pairs, 33 based on Foata normal form. 3/560 useless extension candidates. Maximal degree in co-relation 1783. Up to 145 conditions per place. [2022-07-12 10:25:28,344 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 59 selfloop transitions, 5 changer transitions 29/213 dead transitions. [2022-07-12 10:25:28,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 213 transitions, 1501 flow [2022-07-12 10:25:28,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:28,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2461 transitions. [2022-07-12 10:25:28,347 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7768308080808081 [2022-07-12 10:25:28,347 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2461 transitions. [2022-07-12 10:25:28,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2461 transitions. [2022-07-12 10:25:28,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:28,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2461 transitions. [2022-07-12 10:25:28,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.72222222222223) internal successors, (2461), 18 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,352 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,353 INFO L186 Difference]: Start difference. First operand has 286 places, 200 transitions, 1180 flow. Second operand 18 states and 2461 transitions. [2022-07-12 10:25:28,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 213 transitions, 1501 flow [2022-07-12 10:25:28,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 213 transitions, 1382 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-07-12 10:25:28,370 INFO L242 Difference]: Finished difference. Result has 273 places, 180 transitions, 842 flow [2022-07-12 10:25:28,370 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=842, PETRI_PLACES=273, PETRI_TRANSITIONS=180} [2022-07-12 10:25:28,371 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 114 predicate places. [2022-07-12 10:25:28,371 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 180 transitions, 842 flow [2022-07-12 10:25:28,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,371 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:28,371 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] [2022-07-12 10:25:28,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-12 10:25:28,372 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:28,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:28,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1784959983, now seen corresponding path program 14 times [2022-07-12 10:25:28,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:28,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069257387] [2022-07-12 10:25:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:28,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:28,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:28,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:28,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069257387] [2022-07-12 10:25:28,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069257387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:28,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:28,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:28,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364052624] [2022-07-12 10:25:28,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:28,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:28,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:28,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:28,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:28,471 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:28,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 180 transitions, 842 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:28,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:28,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:28,785 INFO L129 PetriNetUnfolder]: 77/619 cut-off events. [2022-07-12 10:25:28,786 INFO L130 PetriNetUnfolder]: For 1864/1869 co-relation queries the response was YES. [2022-07-12 10:25:28,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1848 conditions, 619 events. 77/619 cut-off events. For 1864/1869 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3184 event pairs, 33 based on Foata normal form. 1/602 useless extension candidates. Maximal degree in co-relation 1776. Up to 126 conditions per place. [2022-07-12 10:25:28,792 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 21 changer transitions 30/225 dead transitions. [2022-07-12 10:25:28,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 225 transitions, 1555 flow [2022-07-12 10:25:28,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:25:28,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:25:28,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3011 transitions. [2022-07-12 10:25:28,795 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7776342975206612 [2022-07-12 10:25:28,795 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3011 transitions. [2022-07-12 10:25:28,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3011 transitions. [2022-07-12 10:25:28,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:28,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3011 transitions. [2022-07-12 10:25:28,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 136.86363636363637) internal successors, (3011), 22 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,802 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,802 INFO L186 Difference]: Start difference. First operand has 273 places, 180 transitions, 842 flow. Second operand 22 states and 3011 transitions. [2022-07-12 10:25:28,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 225 transitions, 1555 flow [2022-07-12 10:25:28,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 225 transitions, 1406 flow, removed 30 selfloop flow, removed 21 redundant places. [2022-07-12 10:25:28,816 INFO L242 Difference]: Finished difference. Result has 259 places, 185 transitions, 914 flow [2022-07-12 10:25:28,817 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=914, PETRI_PLACES=259, PETRI_TRANSITIONS=185} [2022-07-12 10:25:28,817 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 100 predicate places. [2022-07-12 10:25:28,817 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 185 transitions, 914 flow [2022-07-12 10:25:28,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,818 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:28,818 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] [2022-07-12 10:25:28,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-12 10:25:28,818 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:28,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:28,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1090332437, now seen corresponding path program 15 times [2022-07-12 10:25:28,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:28,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782368799] [2022-07-12 10:25:28,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:28,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:28,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:28,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782368799] [2022-07-12 10:25:28,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782368799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:28,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:28,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:28,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259070058] [2022-07-12 10:25:28,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:28,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:28,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:28,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:28,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:28,911 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:28,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 185 transitions, 914 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:28,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:28,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:28,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:29,171 INFO L129 PetriNetUnfolder]: 78/612 cut-off events. [2022-07-12 10:25:29,171 INFO L130 PetriNetUnfolder]: For 1916/1921 co-relation queries the response was YES. [2022-07-12 10:25:29,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1886 conditions, 612 events. 78/612 cut-off events. For 1916/1921 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3133 event pairs, 32 based on Foata normal form. 1/595 useless extension candidates. Maximal degree in co-relation 1817. Up to 133 conditions per place. [2022-07-12 10:25:29,178 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 55 selfloop transitions, 27 changer transitions 23/225 dead transitions. [2022-07-12 10:25:29,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 225 transitions, 1600 flow [2022-07-12 10:25:29,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:29,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:29,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2336 transitions. [2022-07-12 10:25:29,181 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7807486631016043 [2022-07-12 10:25:29,181 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2336 transitions. [2022-07-12 10:25:29,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2336 transitions. [2022-07-12 10:25:29,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:29,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2336 transitions. [2022-07-12 10:25:29,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.41176470588235) internal successors, (2336), 17 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,186 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,186 INFO L186 Difference]: Start difference. First operand has 259 places, 185 transitions, 914 flow. Second operand 17 states and 2336 transitions. [2022-07-12 10:25:29,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 225 transitions, 1600 flow [2022-07-12 10:25:29,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 225 transitions, 1514 flow, removed 30 selfloop flow, removed 13 redundant places. [2022-07-12 10:25:29,200 INFO L242 Difference]: Finished difference. Result has 258 places, 193 transitions, 1069 flow [2022-07-12 10:25:29,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1069, PETRI_PLACES=258, PETRI_TRANSITIONS=193} [2022-07-12 10:25:29,200 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 99 predicate places. [2022-07-12 10:25:29,201 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 193 transitions, 1069 flow [2022-07-12 10:25:29,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,201 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:29,201 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] [2022-07-12 10:25:29,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-12 10:25:29,202 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:29,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:29,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2132873829, now seen corresponding path program 16 times [2022-07-12 10:25:29,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:29,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496024684] [2022-07-12 10:25:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:29,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:29,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:29,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:29,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496024684] [2022-07-12 10:25:29,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496024684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:29,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:29,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:29,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40515963] [2022-07-12 10:25:29,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:29,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:29,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:29,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:29,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:29,292 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:29,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 193 transitions, 1069 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:29,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:29,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:29,536 INFO L129 PetriNetUnfolder]: 68/574 cut-off events. [2022-07-12 10:25:29,537 INFO L130 PetriNetUnfolder]: For 1750/1755 co-relation queries the response was YES. [2022-07-12 10:25:29,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 574 events. 68/574 cut-off events. For 1750/1755 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2811 event pairs, 33 based on Foata normal form. 1/557 useless extension candidates. Maximal degree in co-relation 1684. Up to 127 conditions per place. [2022-07-12 10:25:29,546 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 52 selfloop transitions, 12 changer transitions 29/213 dead transitions. [2022-07-12 10:25:29,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 213 transitions, 1447 flow [2022-07-12 10:25:29,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:29,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:29,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2465 transitions. [2022-07-12 10:25:29,549 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7780934343434344 [2022-07-12 10:25:29,549 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2465 transitions. [2022-07-12 10:25:29,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2465 transitions. [2022-07-12 10:25:29,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:29,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2465 transitions. [2022-07-12 10:25:29,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.94444444444446) internal successors, (2465), 18 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,555 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,555 INFO L186 Difference]: Start difference. First operand has 258 places, 193 transitions, 1069 flow. Second operand 18 states and 2465 transitions. [2022-07-12 10:25:29,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 213 transitions, 1447 flow [2022-07-12 10:25:29,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 213 transitions, 1347 flow, removed 28 selfloop flow, removed 9 redundant places. [2022-07-12 10:25:29,569 INFO L242 Difference]: Finished difference. Result has 265 places, 178 transitions, 821 flow [2022-07-12 10:25:29,569 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=821, PETRI_PLACES=265, PETRI_TRANSITIONS=178} [2022-07-12 10:25:29,570 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 106 predicate places. [2022-07-12 10:25:29,570 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 178 transitions, 821 flow [2022-07-12 10:25:29,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,570 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:29,570 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] [2022-07-12 10:25:29,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-12 10:25:29,571 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:29,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:29,571 INFO L85 PathProgramCache]: Analyzing trace with hash 919394503, now seen corresponding path program 17 times [2022-07-12 10:25:29,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:29,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460516528] [2022-07-12 10:25:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:29,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:29,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:29,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460516528] [2022-07-12 10:25:29,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460516528] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:29,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:29,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:29,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472919949] [2022-07-12 10:25:29,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:29,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:29,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:29,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:29,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:29,678 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:29,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 178 transitions, 821 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:29,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:29,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:29,983 INFO L129 PetriNetUnfolder]: 67/553 cut-off events. [2022-07-12 10:25:29,983 INFO L130 PetriNetUnfolder]: For 1743/1748 co-relation queries the response was YES. [2022-07-12 10:25:29,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 553 events. 67/553 cut-off events. For 1743/1748 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2619 event pairs, 32 based on Foata normal form. 1/535 useless extension candidates. Maximal degree in co-relation 1625. Up to 117 conditions per place. [2022-07-12 10:25:29,988 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 48 selfloop transitions, 19 changer transitions 30/217 dead transitions. [2022-07-12 10:25:29,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 217 transitions, 1526 flow [2022-07-12 10:25:29,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:25:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:25:29,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2875 transitions. [2022-07-12 10:25:29,991 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7778679653679653 [2022-07-12 10:25:29,991 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2875 transitions. [2022-07-12 10:25:29,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2875 transitions. [2022-07-12 10:25:29,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:29,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2875 transitions. [2022-07-12 10:25:29,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 136.9047619047619) internal successors, (2875), 21 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,998 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:29,998 INFO L186 Difference]: Start difference. First operand has 265 places, 178 transitions, 821 flow. Second operand 21 states and 2875 transitions. [2022-07-12 10:25:29,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 217 transitions, 1526 flow [2022-07-12 10:25:30,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 217 transitions, 1360 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-07-12 10:25:30,012 INFO L242 Difference]: Finished difference. Result has 258 places, 182 transitions, 903 flow [2022-07-12 10:25:30,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=903, PETRI_PLACES=258, PETRI_TRANSITIONS=182} [2022-07-12 10:25:30,013 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 99 predicate places. [2022-07-12 10:25:30,013 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 182 transitions, 903 flow [2022-07-12 10:25:30,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,014 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:30,014 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] [2022-07-12 10:25:30,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-12 10:25:30,014 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:30,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:30,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1815134357, now seen corresponding path program 18 times [2022-07-12 10:25:30,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:30,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409477504] [2022-07-12 10:25:30,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:30,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:30,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:30,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:30,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409477504] [2022-07-12 10:25:30,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409477504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:30,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:30,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:30,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612847113] [2022-07-12 10:25:30,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:30,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:30,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:30,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:30,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:30,119 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:30,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 182 transitions, 903 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:30,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:30,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:30,381 INFO L129 PetriNetUnfolder]: 62/537 cut-off events. [2022-07-12 10:25:30,381 INFO L130 PetriNetUnfolder]: For 1725/1730 co-relation queries the response was YES. [2022-07-12 10:25:30,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1627 conditions, 537 events. 62/537 cut-off events. For 1725/1730 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2485 event pairs, 32 based on Foata normal form. 1/519 useless extension candidates. Maximal degree in co-relation 1557. Up to 122 conditions per place. [2022-07-12 10:25:30,387 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 44 selfloop transitions, 21 changer transitions 26/211 dead transitions. [2022-07-12 10:25:30,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 211 transitions, 1453 flow [2022-07-12 10:25:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:30,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:30,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2470 transitions. [2022-07-12 10:25:30,389 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7796717171717171 [2022-07-12 10:25:30,390 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2470 transitions. [2022-07-12 10:25:30,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2470 transitions. [2022-07-12 10:25:30,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:30,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2470 transitions. [2022-07-12 10:25:30,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.22222222222223) internal successors, (2470), 18 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,395 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,395 INFO L186 Difference]: Start difference. First operand has 258 places, 182 transitions, 903 flow. Second operand 18 states and 2470 transitions. [2022-07-12 10:25:30,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 211 transitions, 1453 flow [2022-07-12 10:25:30,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 211 transitions, 1338 flow, removed 43 selfloop flow, removed 14 redundant places. [2022-07-12 10:25:30,408 INFO L242 Difference]: Finished difference. Result has 253 places, 183 transitions, 928 flow [2022-07-12 10:25:30,409 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=928, PETRI_PLACES=253, PETRI_TRANSITIONS=183} [2022-07-12 10:25:30,409 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2022-07-12 10:25:30,409 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 183 transitions, 928 flow [2022-07-12 10:25:30,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,410 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:30,410 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] [2022-07-12 10:25:30,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-12 10:25:30,410 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:30,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:30,411 INFO L85 PathProgramCache]: Analyzing trace with hash 168894361, now seen corresponding path program 19 times [2022-07-12 10:25:30,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:30,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080781350] [2022-07-12 10:25:30,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:30,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:30,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:30,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080781350] [2022-07-12 10:25:30,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080781350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:30,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:30,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:30,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364367449] [2022-07-12 10:25:30,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:30,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:30,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:30,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:30,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:30,523 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:30,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 183 transitions, 928 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:30,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:30,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:30,769 INFO L129 PetriNetUnfolder]: 60/534 cut-off events. [2022-07-12 10:25:30,769 INFO L130 PetriNetUnfolder]: For 1345/1350 co-relation queries the response was YES. [2022-07-12 10:25:30,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 534 events. 60/534 cut-off events. For 1345/1350 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2494 event pairs, 35 based on Foata normal form. 1/516 useless extension candidates. Maximal degree in co-relation 1467. Up to 121 conditions per place. [2022-07-12 10:25:30,774 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 42 selfloop transitions, 13 changer transitions 28/203 dead transitions. [2022-07-12 10:25:30,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 203 transitions, 1275 flow [2022-07-12 10:25:30,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:25:30,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:25:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2467 transitions. [2022-07-12 10:25:30,777 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7787247474747475 [2022-07-12 10:25:30,777 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2467 transitions. [2022-07-12 10:25:30,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2467 transitions. [2022-07-12 10:25:30,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:30,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2467 transitions. [2022-07-12 10:25:30,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.05555555555554) internal successors, (2467), 18 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,782 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,782 INFO L186 Difference]: Start difference. First operand has 253 places, 183 transitions, 928 flow. Second operand 18 states and 2467 transitions. [2022-07-12 10:25:30,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 203 transitions, 1275 flow [2022-07-12 10:25:30,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 203 transitions, 1138 flow, removed 37 selfloop flow, removed 14 redundant places. [2022-07-12 10:25:30,794 INFO L242 Difference]: Finished difference. Result has 255 places, 174 transitions, 754 flow [2022-07-12 10:25:30,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=754, PETRI_PLACES=255, PETRI_TRANSITIONS=174} [2022-07-12 10:25:30,795 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 96 predicate places. [2022-07-12 10:25:30,795 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 174 transitions, 754 flow [2022-07-12 10:25:30,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,795 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:30,796 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] [2022-07-12 10:25:30,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-12 10:25:30,796 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:30,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:30,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1082336479, now seen corresponding path program 20 times [2022-07-12 10:25:30,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:30,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866379111] [2022-07-12 10:25:30,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:30,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:30,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:30,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866379111] [2022-07-12 10:25:30,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866379111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:30,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:30,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:25:30,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220135550] [2022-07-12 10:25:30,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:30,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:25:30,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:30,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:25:30,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:25:30,890 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-07-12 10:25:30,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 174 transitions, 754 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:30,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:30,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-07-12 10:25:30,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:31,121 INFO L129 PetriNetUnfolder]: 48/440 cut-off events. [2022-07-12 10:25:31,122 INFO L130 PetriNetUnfolder]: For 836/841 co-relation queries the response was YES. [2022-07-12 10:25:31,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 440 events. 48/440 cut-off events. For 836/841 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1801 event pairs, 29 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1090. Up to 100 conditions per place. [2022-07-12 10:25:31,126 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 29 selfloop transitions, 0 changer transitions 40/183 dead transitions. [2022-07-12 10:25:31,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 183 transitions, 918 flow [2022-07-12 10:25:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:25:31,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:25:31,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2322 transitions. [2022-07-12 10:25:31,128 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7760695187165776 [2022-07-12 10:25:31,128 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2322 transitions. [2022-07-12 10:25:31,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2322 transitions. [2022-07-12 10:25:31,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:31,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2322 transitions. [2022-07-12 10:25:31,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 136.58823529411765) internal successors, (2322), 17 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,134 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,134 INFO L186 Difference]: Start difference. First operand has 255 places, 174 transitions, 754 flow. Second operand 17 states and 2322 transitions. [2022-07-12 10:25:31,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 183 transitions, 918 flow [2022-07-12 10:25:31,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 183 transitions, 828 flow, removed 21 selfloop flow, removed 19 redundant places. [2022-07-12 10:25:31,142 INFO L242 Difference]: Finished difference. Result has 238 places, 143 transitions, 394 flow [2022-07-12 10:25:31,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=394, PETRI_PLACES=238, PETRI_TRANSITIONS=143} [2022-07-12 10:25:31,143 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 79 predicate places. [2022-07-12 10:25:31,143 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 143 transitions, 394 flow [2022-07-12 10:25:31,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,144 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:31,144 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:31,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-12 10:25:31,144 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:31,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:31,145 INFO L85 PathProgramCache]: Analyzing trace with hash 191306843, now seen corresponding path program 1 times [2022-07-12 10:25:31,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:31,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464837949] [2022-07-12 10:25:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:31,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:31,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:31,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:31,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464837949] [2022-07-12 10:25:31,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464837949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:31,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:31,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:25:31,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643906295] [2022-07-12 10:25:31,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:31,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:25:31,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:31,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:25:31,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:25:31,620 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:25:31,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 143 transitions, 394 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:31,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:31,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:25:31,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:33,899 INFO L129 PetriNetUnfolder]: 387/1388 cut-off events. [2022-07-12 10:25:33,899 INFO L130 PetriNetUnfolder]: For 1577/1579 co-relation queries the response was YES. [2022-07-12 10:25:33,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3221 conditions, 1388 events. 387/1388 cut-off events. For 1577/1579 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8118 event pairs, 18 based on Foata normal form. 1/1368 useless extension candidates. Maximal degree in co-relation 3170. Up to 141 conditions per place. [2022-07-12 10:25:33,911 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 184 selfloop transitions, 35 changer transitions 39/345 dead transitions. [2022-07-12 10:25:33,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 345 transitions, 1811 flow [2022-07-12 10:25:33,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 10:25:33,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-12 10:25:33,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4208 transitions. [2022-07-12 10:25:33,915 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6461916461916462 [2022-07-12 10:25:33,915 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4208 transitions. [2022-07-12 10:25:33,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4208 transitions. [2022-07-12 10:25:33,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:33,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4208 transitions. [2022-07-12 10:25:33,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 113.72972972972973) internal successors, (4208), 37 states have internal predecessors, (4208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 176.0) internal successors, (6688), 38 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,925 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 176.0) internal successors, (6688), 38 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,925 INFO L186 Difference]: Start difference. First operand has 238 places, 143 transitions, 394 flow. Second operand 37 states and 4208 transitions. [2022-07-12 10:25:33,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 345 transitions, 1811 flow [2022-07-12 10:25:33,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 345 transitions, 1641 flow, removed 84 selfloop flow, removed 11 redundant places. [2022-07-12 10:25:33,935 INFO L242 Difference]: Finished difference. Result has 249 places, 170 transitions, 710 flow [2022-07-12 10:25:33,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=710, PETRI_PLACES=249, PETRI_TRANSITIONS=170} [2022-07-12 10:25:33,936 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-07-12 10:25:33,936 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 170 transitions, 710 flow [2022-07-12 10:25:33,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:33,937 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:33,937 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] [2022-07-12 10:25:33,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-12 10:25:33,937 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:33,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:33,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1559427641, now seen corresponding path program 2 times [2022-07-12 10:25:33,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:33,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76418995] [2022-07-12 10:25:33,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:33,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:34,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:34,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76418995] [2022-07-12 10:25:34,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76418995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:34,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:34,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:25:34,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960200579] [2022-07-12 10:25:34,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:34,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:25:34,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:34,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:25:34,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:25:34,456 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:25:34,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 170 transitions, 710 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:34,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:34,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:25:34,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:36,945 INFO L129 PetriNetUnfolder]: 415/1486 cut-off events. [2022-07-12 10:25:36,945 INFO L130 PetriNetUnfolder]: For 5572/5574 co-relation queries the response was YES. [2022-07-12 10:25:36,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4515 conditions, 1486 events. 415/1486 cut-off events. For 5572/5574 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8885 event pairs, 34 based on Foata normal form. 1/1433 useless extension candidates. Maximal degree in co-relation 4445. Up to 136 conditions per place. [2022-07-12 10:25:36,956 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 192 selfloop transitions, 47 changer transitions 39/365 dead transitions. [2022-07-12 10:25:36,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 365 transitions, 2582 flow [2022-07-12 10:25:36,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:25:36,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:25:36,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3991 transitions. [2022-07-12 10:25:36,961 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6478896103896103 [2022-07-12 10:25:36,961 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3991 transitions. [2022-07-12 10:25:36,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3991 transitions. [2022-07-12 10:25:36,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:36,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3991 transitions. [2022-07-12 10:25:36,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.02857142857142) internal successors, (3991), 35 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,970 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,970 INFO L186 Difference]: Start difference. First operand has 249 places, 170 transitions, 710 flow. Second operand 35 states and 3991 transitions. [2022-07-12 10:25:36,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 365 transitions, 2582 flow [2022-07-12 10:25:36,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 365 transitions, 2147 flow, removed 171 selfloop flow, removed 21 redundant places. [2022-07-12 10:25:36,992 INFO L242 Difference]: Finished difference. Result has 269 places, 192 transitions, 1036 flow [2022-07-12 10:25:36,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1036, PETRI_PLACES=269, PETRI_TRANSITIONS=192} [2022-07-12 10:25:36,992 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2022-07-12 10:25:36,993 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 192 transitions, 1036 flow [2022-07-12 10:25:36,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:36,993 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:36,993 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] [2022-07-12 10:25:36,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-12 10:25:36,994 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:36,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:36,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1306737223, now seen corresponding path program 3 times [2022-07-12 10:25:36,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:36,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986194942] [2022-07-12 10:25:36,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:36,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:37,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:37,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986194942] [2022-07-12 10:25:37,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986194942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:37,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:37,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:25:37,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550179097] [2022-07-12 10:25:37,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:37,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:25:37,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:37,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:25:37,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:25:37,439 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:25:37,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 192 transitions, 1036 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:37,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:37,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:25:37,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:41,733 INFO L129 PetriNetUnfolder]: 460/1585 cut-off events. [2022-07-12 10:25:41,733 INFO L130 PetriNetUnfolder]: For 5028/5030 co-relation queries the response was YES. [2022-07-12 10:25:41,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5108 conditions, 1585 events. 460/1585 cut-off events. For 5028/5030 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 9843 event pairs, 12 based on Foata normal form. 1/1562 useless extension candidates. Maximal degree in co-relation 5030. Up to 117 conditions per place. [2022-07-12 10:25:41,750 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 274 selfloop transitions, 35 changer transitions 124/520 dead transitions. [2022-07-12 10:25:41,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 520 transitions, 3984 flow [2022-07-12 10:25:41,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-12 10:25:41,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-07-12 10:25:41,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 7313 transitions. [2022-07-12 10:25:41,757 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6392482517482517 [2022-07-12 10:25:41,757 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 7313 transitions. [2022-07-12 10:25:41,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 7313 transitions. [2022-07-12 10:25:41,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:41,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 7313 transitions. [2022-07-12 10:25:41,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 112.50769230769231) internal successors, (7313), 65 states have internal predecessors, (7313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 176.0) internal successors, (11616), 66 states have internal predecessors, (11616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,773 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 176.0) internal successors, (11616), 66 states have internal predecessors, (11616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,773 INFO L186 Difference]: Start difference. First operand has 269 places, 192 transitions, 1036 flow. Second operand 65 states and 7313 transitions. [2022-07-12 10:25:41,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 520 transitions, 3984 flow [2022-07-12 10:25:41,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 520 transitions, 3310 flow, removed 156 selfloop flow, removed 20 redundant places. [2022-07-12 10:25:41,804 INFO L242 Difference]: Finished difference. Result has 351 places, 192 transitions, 956 flow [2022-07-12 10:25:41,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=956, PETRI_PLACES=351, PETRI_TRANSITIONS=192} [2022-07-12 10:25:41,804 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 192 predicate places. [2022-07-12 10:25:41,805 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 192 transitions, 956 flow [2022-07-12 10:25:41,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:41,805 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:41,805 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] [2022-07-12 10:25:41,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-12 10:25:41,806 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:41,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:41,806 INFO L85 PathProgramCache]: Analyzing trace with hash 715640743, now seen corresponding path program 4 times [2022-07-12 10:25:41,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:41,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696184338] [2022-07-12 10:25:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:41,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:42,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:42,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696184338] [2022-07-12 10:25:42,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696184338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:42,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:42,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:25:42,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868539126] [2022-07-12 10:25:42,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:42,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:25:42,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:42,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:25:42,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:25:42,257 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:25:42,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 192 transitions, 956 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:42,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:42,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:25:42,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:44,825 INFO L129 PetriNetUnfolder]: 504/1773 cut-off events. [2022-07-12 10:25:44,825 INFO L130 PetriNetUnfolder]: For 10024/10026 co-relation queries the response was YES. [2022-07-12 10:25:44,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6568 conditions, 1773 events. 504/1773 cut-off events. For 10024/10026 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 11149 event pairs, 62 based on Foata normal form. 1/1715 useless extension candidates. Maximal degree in co-relation 6450. Up to 199 conditions per place. [2022-07-12 10:25:44,848 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 232 selfloop transitions, 41 changer transitions 44/404 dead transitions. [2022-07-12 10:25:44,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 404 transitions, 3417 flow [2022-07-12 10:25:44,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:25:44,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:25:44,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4007 transitions. [2022-07-12 10:25:44,852 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.650487012987013 [2022-07-12 10:25:44,852 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4007 transitions. [2022-07-12 10:25:44,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4007 transitions. [2022-07-12 10:25:44,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:44,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4007 transitions. [2022-07-12 10:25:44,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.48571428571428) internal successors, (4007), 35 states have internal predecessors, (4007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,860 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,861 INFO L186 Difference]: Start difference. First operand has 351 places, 192 transitions, 956 flow. Second operand 35 states and 4007 transitions. [2022-07-12 10:25:44,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 404 transitions, 3417 flow [2022-07-12 10:25:44,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 404 transitions, 2909 flow, removed 115 selfloop flow, removed 60 redundant places. [2022-07-12 10:25:44,895 INFO L242 Difference]: Finished difference. Result has 298 places, 216 transitions, 1315 flow [2022-07-12 10:25:44,896 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1315, PETRI_PLACES=298, PETRI_TRANSITIONS=216} [2022-07-12 10:25:44,896 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 139 predicate places. [2022-07-12 10:25:44,896 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 216 transitions, 1315 flow [2022-07-12 10:25:44,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:44,897 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:44,897 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] [2022-07-12 10:25:44,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-12 10:25:44,897 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:44,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:44,898 INFO L85 PathProgramCache]: Analyzing trace with hash 580382619, now seen corresponding path program 5 times [2022-07-12 10:25:44,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:44,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580758921] [2022-07-12 10:25:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:44,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:45,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:45,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:45,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580758921] [2022-07-12 10:25:45,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580758921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:45,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:45,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:25:45,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708023277] [2022-07-12 10:25:45,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:45,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:25:45,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:45,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:25:45,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:25:45,407 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:25:45,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 216 transitions, 1315 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:45,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:45,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:25:45,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:47,687 INFO L129 PetriNetUnfolder]: 631/2162 cut-off events. [2022-07-12 10:25:47,688 INFO L130 PetriNetUnfolder]: For 12409/12411 co-relation queries the response was YES. [2022-07-12 10:25:47,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8088 conditions, 2162 events. 631/2162 cut-off events. For 12409/12411 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 14432 event pairs, 102 based on Foata normal form. 1/2123 useless extension candidates. Maximal degree in co-relation 7994. Up to 351 conditions per place. [2022-07-12 10:25:47,714 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 269 selfloop transitions, 46 changer transitions 36/438 dead transitions. [2022-07-12 10:25:47,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 438 transitions, 3868 flow [2022-07-12 10:25:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:25:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:25:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4004 transitions. [2022-07-12 10:25:47,718 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.65 [2022-07-12 10:25:47,718 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4004 transitions. [2022-07-12 10:25:47,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4004 transitions. [2022-07-12 10:25:47,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:47,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4004 transitions. [2022-07-12 10:25:47,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.4) internal successors, (4004), 35 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,727 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,727 INFO L186 Difference]: Start difference. First operand has 298 places, 216 transitions, 1315 flow. Second operand 35 states and 4004 transitions. [2022-07-12 10:25:47,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 438 transitions, 3868 flow [2022-07-12 10:25:47,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 438 transitions, 3349 flow, removed 178 selfloop flow, removed 19 redundant places. [2022-07-12 10:25:47,780 INFO L242 Difference]: Finished difference. Result has 325 places, 243 transitions, 1560 flow [2022-07-12 10:25:47,780 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1560, PETRI_PLACES=325, PETRI_TRANSITIONS=243} [2022-07-12 10:25:47,781 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 166 predicate places. [2022-07-12 10:25:47,781 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 243 transitions, 1560 flow [2022-07-12 10:25:47,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:47,781 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:47,782 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] [2022-07-12 10:25:47,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-12 10:25:47,782 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:47,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:47,782 INFO L85 PathProgramCache]: Analyzing trace with hash 640294289, now seen corresponding path program 6 times [2022-07-12 10:25:47,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:47,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004117808] [2022-07-12 10:25:47,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:47,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:48,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:48,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004117808] [2022-07-12 10:25:48,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004117808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:48,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:48,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:25:48,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328098216] [2022-07-12 10:25:48,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:48,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:25:48,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:48,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:25:48,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:25:48,211 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:25:48,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 243 transitions, 1560 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:48,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:48,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:25:48,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:50,974 INFO L129 PetriNetUnfolder]: 899/2991 cut-off events. [2022-07-12 10:25:50,974 INFO L130 PetriNetUnfolder]: For 20276/20278 co-relation queries the response was YES. [2022-07-12 10:25:50,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11851 conditions, 2991 events. 899/2991 cut-off events. For 20276/20278 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 22288 event pairs, 182 based on Foata normal form. 1/2899 useless extension candidates. Maximal degree in co-relation 11743. Up to 834 conditions per place. [2022-07-12 10:25:51,007 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 325 selfloop transitions, 58 changer transitions 39/509 dead transitions. [2022-07-12 10:25:51,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 509 transitions, 5165 flow [2022-07-12 10:25:51,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:25:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:25:51,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4024 transitions. [2022-07-12 10:25:51,012 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6532467532467533 [2022-07-12 10:25:51,012 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4024 transitions. [2022-07-12 10:25:51,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4024 transitions. [2022-07-12 10:25:51,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:51,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4024 transitions. [2022-07-12 10:25:51,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.97142857142858) internal successors, (4024), 35 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:51,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:51,020 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:51,021 INFO L186 Difference]: Start difference. First operand has 325 places, 243 transitions, 1560 flow. Second operand 35 states and 4024 transitions. [2022-07-12 10:25:51,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 509 transitions, 5165 flow [2022-07-12 10:25:51,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 509 transitions, 4707 flow, removed 176 selfloop flow, removed 19 redundant places. [2022-07-12 10:25:51,129 INFO L242 Difference]: Finished difference. Result has 357 places, 274 transitions, 2132 flow [2022-07-12 10:25:51,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1334, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2132, PETRI_PLACES=357, PETRI_TRANSITIONS=274} [2022-07-12 10:25:51,130 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 198 predicate places. [2022-07-12 10:25:51,130 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 274 transitions, 2132 flow [2022-07-12 10:25:51,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:51,131 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:51,131 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] [2022-07-12 10:25:51,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-12 10:25:51,132 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:51,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:51,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1506690079, now seen corresponding path program 7 times [2022-07-12 10:25:51,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:51,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744316361] [2022-07-12 10:25:51,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:51,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:51,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:51,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744316361] [2022-07-12 10:25:51,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744316361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:51,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:51,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:25:51,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776600600] [2022-07-12 10:25:51,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:51,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:25:51,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:51,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:25:51,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:25:51,638 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:25:51,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 274 transitions, 2132 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:51,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:51,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:25:51,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:56,521 INFO L129 PetriNetUnfolder]: 1083/3715 cut-off events. [2022-07-12 10:25:56,521 INFO L130 PetriNetUnfolder]: For 32855/32857 co-relation queries the response was YES. [2022-07-12 10:25:56,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16015 conditions, 3715 events. 1083/3715 cut-off events. For 32855/32857 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 29851 event pairs, 237 based on Foata normal form. 1/3647 useless extension candidates. Maximal degree in co-relation 15889. Up to 864 conditions per place. [2022-07-12 10:25:56,566 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 413 selfloop transitions, 26 changer transitions 112/638 dead transitions. [2022-07-12 10:25:56,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 638 transitions, 6920 flow [2022-07-12 10:25:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-12 10:25:56,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-07-12 10:25:56,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 7020 transitions. [2022-07-12 10:25:56,572 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6433284457478006 [2022-07-12 10:25:56,572 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 7020 transitions. [2022-07-12 10:25:56,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 7020 transitions. [2022-07-12 10:25:56,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:56,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 7020 transitions. [2022-07-12 10:25:56,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 113.2258064516129) internal successors, (7020), 62 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:56,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:56,587 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:56,587 INFO L186 Difference]: Start difference. First operand has 357 places, 274 transitions, 2132 flow. Second operand 62 states and 7020 transitions. [2022-07-12 10:25:56,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 638 transitions, 6920 flow [2022-07-12 10:25:56,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 638 transitions, 6210 flow, removed 354 selfloop flow, removed 15 redundant places. [2022-07-12 10:25:56,743 INFO L242 Difference]: Finished difference. Result has 445 places, 283 transitions, 2144 flow [2022-07-12 10:25:56,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=2144, PETRI_PLACES=445, PETRI_TRANSITIONS=283} [2022-07-12 10:25:56,744 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 286 predicate places. [2022-07-12 10:25:56,744 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 283 transitions, 2144 flow [2022-07-12 10:25:56,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:56,745 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:56,745 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:56,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-12 10:25:56,746 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:56,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:56,746 INFO L85 PathProgramCache]: Analyzing trace with hash -38731419, now seen corresponding path program 8 times [2022-07-12 10:25:56,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:56,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916140858] [2022-07-12 10:25:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:56,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:57,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:57,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916140858] [2022-07-12 10:25:57,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916140858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:57,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:57,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:25:57,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856032247] [2022-07-12 10:25:57,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:57,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:25:57,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:57,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:25:57,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:25:57,226 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:25:57,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 283 transitions, 2144 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:25:57,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:57,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:25:57,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:00,601 INFO L129 PetriNetUnfolder]: 1126/3824 cut-off events. [2022-07-12 10:26:00,601 INFO L130 PetriNetUnfolder]: For 69336/69342 co-relation queries the response was YES. [2022-07-12 10:26:00,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20096 conditions, 3824 events. 1126/3824 cut-off events. For 69336/69342 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 30868 event pairs, 226 based on Foata normal form. 1/3703 useless extension candidates. Maximal degree in co-relation 19927. Up to 834 conditions per place. [2022-07-12 10:26:00,653 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 402 selfloop transitions, 51 changer transitions 43/583 dead transitions. [2022-07-12 10:26:00,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 583 transitions, 7814 flow [2022-07-12 10:26:00,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:26:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:26:00,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4037 transitions. [2022-07-12 10:26:00,655 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6553571428571429 [2022-07-12 10:26:00,655 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4037 transitions. [2022-07-12 10:26:00,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4037 transitions. [2022-07-12 10:26:00,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:00,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4037 transitions. [2022-07-12 10:26:00,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.34285714285714) internal successors, (4037), 35 states have internal predecessors, (4037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:00,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:00,662 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:00,662 INFO L186 Difference]: Start difference. First operand has 445 places, 283 transitions, 2144 flow. Second operand 35 states and 4037 transitions. [2022-07-12 10:26:00,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 583 transitions, 7814 flow [2022-07-12 10:26:00,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 583 transitions, 7097 flow, removed 327 selfloop flow, removed 30 redundant places. [2022-07-12 10:26:00,882 INFO L242 Difference]: Finished difference. Result has 425 places, 305 transitions, 2756 flow [2022-07-12 10:26:00,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2756, PETRI_PLACES=425, PETRI_TRANSITIONS=305} [2022-07-12 10:26:00,883 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 266 predicate places. [2022-07-12 10:26:00,884 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 305 transitions, 2756 flow [2022-07-12 10:26:00,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:00,884 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:00,884 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] [2022-07-12 10:26:00,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-12 10:26:00,885 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:00,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:00,885 INFO L85 PathProgramCache]: Analyzing trace with hash 307693301, now seen corresponding path program 9 times [2022-07-12 10:26:00,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:00,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072734381] [2022-07-12 10:26:00,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:00,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:01,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:01,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072734381] [2022-07-12 10:26:01,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072734381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:01,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:01,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:26:01,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418579221] [2022-07-12 10:26:01,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:01,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:26:01,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:01,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:26:01,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:26:01,367 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:26:01,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 305 transitions, 2756 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:01,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:01,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:26:01,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:06,491 INFO L129 PetriNetUnfolder]: 1340/4426 cut-off events. [2022-07-12 10:26:06,491 INFO L130 PetriNetUnfolder]: For 86189/86196 co-relation queries the response was YES. [2022-07-12 10:26:06,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24583 conditions, 4426 events. 1340/4426 cut-off events. For 86189/86196 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 37216 event pairs, 486 based on Foata normal form. 3/4337 useless extension candidates. Maximal degree in co-relation 24416. Up to 1269 conditions per place. [2022-07-12 10:26:06,550 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 436 selfloop transitions, 26 changer transitions 112/661 dead transitions. [2022-07-12 10:26:06,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 661 transitions, 9118 flow [2022-07-12 10:26:06,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-12 10:26:06,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-07-12 10:26:06,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 7022 transitions. [2022-07-12 10:26:06,554 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6435117302052786 [2022-07-12 10:26:06,554 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 7022 transitions. [2022-07-12 10:26:06,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 7022 transitions. [2022-07-12 10:26:06,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:06,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 7022 transitions. [2022-07-12 10:26:06,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 113.25806451612904) internal successors, (7022), 62 states have internal predecessors, (7022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:06,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:06,569 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:06,569 INFO L186 Difference]: Start difference. First operand has 425 places, 305 transitions, 2756 flow. Second operand 62 states and 7022 transitions. [2022-07-12 10:26:06,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 661 transitions, 9118 flow [2022-07-12 10:26:06,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 661 transitions, 8360 flow, removed 264 selfloop flow, removed 20 redundant places. [2022-07-12 10:26:06,877 INFO L242 Difference]: Finished difference. Result has 509 places, 315 transitions, 2808 flow [2022-07-12 10:26:06,877 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=2808, PETRI_PLACES=509, PETRI_TRANSITIONS=315} [2022-07-12 10:26:06,877 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 350 predicate places. [2022-07-12 10:26:06,877 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 315 transitions, 2808 flow [2022-07-12 10:26:06,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:06,878 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:06,878 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] [2022-07-12 10:26:06,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-12 10:26:06,878 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:06,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:06,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1216122745, now seen corresponding path program 10 times [2022-07-12 10:26:06,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:06,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336443815] [2022-07-12 10:26:06,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:06,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:07,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:07,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336443815] [2022-07-12 10:26:07,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336443815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:07,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:07,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:26:07,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739451141] [2022-07-12 10:26:07,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:07,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:26:07,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:07,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:26:07,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:26:07,353 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:26:07,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 315 transitions, 2808 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:07,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:07,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:26:07,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:11,188 INFO L129 PetriNetUnfolder]: 1449/5027 cut-off events. [2022-07-12 10:26:11,189 INFO L130 PetriNetUnfolder]: For 152233/152256 co-relation queries the response was YES. [2022-07-12 10:26:11,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29934 conditions, 5027 events. 1449/5027 cut-off events. For 152233/152256 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 43916 event pairs, 303 based on Foata normal form. 3/4853 useless extension candidates. Maximal degree in co-relation 29722. Up to 1241 conditions per place. [2022-07-12 10:26:11,270 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 423 selfloop transitions, 54 changer transitions 52/616 dead transitions. [2022-07-12 10:26:11,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 616 transitions, 9814 flow [2022-07-12 10:26:11,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:26:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:26:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4011 transitions. [2022-07-12 10:26:11,273 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6511363636363636 [2022-07-12 10:26:11,273 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4011 transitions. [2022-07-12 10:26:11,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4011 transitions. [2022-07-12 10:26:11,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:11,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4011 transitions. [2022-07-12 10:26:11,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.6) internal successors, (4011), 35 states have internal predecessors, (4011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:11,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:11,281 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:11,282 INFO L186 Difference]: Start difference. First operand has 509 places, 315 transitions, 2808 flow. Second operand 35 states and 4011 transitions. [2022-07-12 10:26:11,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 616 transitions, 9814 flow [2022-07-12 10:26:11,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 616 transitions, 8434 flow, removed 662 selfloop flow, removed 51 redundant places. [2022-07-12 10:26:11,753 INFO L242 Difference]: Finished difference. Result has 471 places, 341 transitions, 3310 flow [2022-07-12 10:26:11,753 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3310, PETRI_PLACES=471, PETRI_TRANSITIONS=341} [2022-07-12 10:26:11,754 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 312 predicate places. [2022-07-12 10:26:11,754 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 341 transitions, 3310 flow [2022-07-12 10:26:11,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:11,754 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:11,755 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] [2022-07-12 10:26:11,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-12 10:26:11,755 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:11,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:11,756 INFO L85 PathProgramCache]: Analyzing trace with hash -505615517, now seen corresponding path program 11 times [2022-07-12 10:26:11,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:11,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494667493] [2022-07-12 10:26:11,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:11,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:12,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:12,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494667493] [2022-07-12 10:26:12,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494667493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:12,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:12,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:26:12,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492680029] [2022-07-12 10:26:12,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:12,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:26:12,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:12,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:26:12,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:26:12,265 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:26:12,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 341 transitions, 3310 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:12,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:12,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:26:12,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:16,024 INFO L129 PetriNetUnfolder]: 1463/4857 cut-off events. [2022-07-12 10:26:16,024 INFO L130 PetriNetUnfolder]: For 102935/102946 co-relation queries the response was YES. [2022-07-12 10:26:16,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27672 conditions, 4857 events. 1463/4857 cut-off events. For 102935/102946 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 41690 event pairs, 431 based on Foata normal form. 5/4780 useless extension candidates. Maximal degree in co-relation 27481. Up to 1500 conditions per place. [2022-07-12 10:26:16,102 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 435 selfloop transitions, 47 changer transitions 36/605 dead transitions. [2022-07-12 10:26:16,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 605 transitions, 8032 flow [2022-07-12 10:26:16,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:26:16,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:26:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4036 transitions. [2022-07-12 10:26:16,104 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6551948051948052 [2022-07-12 10:26:16,104 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4036 transitions. [2022-07-12 10:26:16,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4036 transitions. [2022-07-12 10:26:16,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:16,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4036 transitions. [2022-07-12 10:26:16,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.31428571428572) internal successors, (4036), 35 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:16,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:16,110 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:16,110 INFO L186 Difference]: Start difference. First operand has 471 places, 341 transitions, 3310 flow. Second operand 35 states and 4036 transitions. [2022-07-12 10:26:16,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 605 transitions, 8032 flow [2022-07-12 10:26:16,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 605 transitions, 7389 flow, removed 251 selfloop flow, removed 19 redundant places. [2022-07-12 10:26:16,542 INFO L242 Difference]: Finished difference. Result has 494 places, 361 transitions, 3627 flow [2022-07-12 10:26:16,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2859, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3627, PETRI_PLACES=494, PETRI_TRANSITIONS=361} [2022-07-12 10:26:16,543 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 335 predicate places. [2022-07-12 10:26:16,543 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 361 transitions, 3627 flow [2022-07-12 10:26:16,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:16,543 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:16,543 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:16,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-12 10:26:16,544 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:16,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:16,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1590040421, now seen corresponding path program 12 times [2022-07-12 10:26:16,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:16,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385018379] [2022-07-12 10:26:16,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:16,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:17,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:17,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385018379] [2022-07-12 10:26:17,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385018379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:17,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:17,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:26:17,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436581826] [2022-07-12 10:26:17,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:17,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:26:17,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:17,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:26:17,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:26:17,082 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:26:17,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 361 transitions, 3627 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:17,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:17,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:26:17,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:21,038 INFO L129 PetriNetUnfolder]: 1625/5573 cut-off events. [2022-07-12 10:26:21,038 INFO L130 PetriNetUnfolder]: For 119134/119157 co-relation queries the response was YES. [2022-07-12 10:26:21,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31140 conditions, 5573 events. 1625/5573 cut-off events. For 119134/119157 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 49543 event pairs, 414 based on Foata normal form. 3/5385 useless extension candidates. Maximal degree in co-relation 30940. Up to 1617 conditions per place. [2022-07-12 10:26:21,133 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 463 selfloop transitions, 51 changer transitions 52/653 dead transitions. [2022-07-12 10:26:21,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 653 transitions, 9676 flow [2022-07-12 10:26:21,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:26:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:26:21,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4027 transitions. [2022-07-12 10:26:21,136 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6537337662337662 [2022-07-12 10:26:21,136 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4027 transitions. [2022-07-12 10:26:21,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4027 transitions. [2022-07-12 10:26:21,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:21,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4027 transitions. [2022-07-12 10:26:21,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.05714285714286) internal successors, (4027), 35 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:21,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:21,142 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:21,142 INFO L186 Difference]: Start difference. First operand has 494 places, 361 transitions, 3627 flow. Second operand 35 states and 4027 transitions. [2022-07-12 10:26:21,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 653 transitions, 9676 flow [2022-07-12 10:26:21,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 653 transitions, 9044 flow, removed 245 selfloop flow, removed 21 redundant places. [2022-07-12 10:26:21,916 INFO L242 Difference]: Finished difference. Result has 521 places, 388 transitions, 3912 flow [2022-07-12 10:26:21,916 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3107, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3912, PETRI_PLACES=521, PETRI_TRANSITIONS=388} [2022-07-12 10:26:21,917 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 362 predicate places. [2022-07-12 10:26:21,917 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 388 transitions, 3912 flow [2022-07-12 10:26:21,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:21,918 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:21,918 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] [2022-07-12 10:26:21,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-12 10:26:21,918 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:21,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:21,919 INFO L85 PathProgramCache]: Analyzing trace with hash 296849815, now seen corresponding path program 13 times [2022-07-12 10:26:21,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:21,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818421651] [2022-07-12 10:26:21,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:21,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:22,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:22,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:22,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818421651] [2022-07-12 10:26:22,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818421651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:22,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:22,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:26:22,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404492115] [2022-07-12 10:26:22,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:22,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:26:22,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:22,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:26:22,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:26:22,427 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:26:22,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 388 transitions, 3912 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:22,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:22,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:26:22,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:26,578 INFO L129 PetriNetUnfolder]: 1689/5606 cut-off events. [2022-07-12 10:26:26,578 INFO L130 PetriNetUnfolder]: For 140229/140241 co-relation queries the response was YES. [2022-07-12 10:26:26,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33815 conditions, 5606 events. 1689/5606 cut-off events. For 140229/140241 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 49723 event pairs, 495 based on Foata normal form. 3/5515 useless extension candidates. Maximal degree in co-relation 33599. Up to 1783 conditions per place. [2022-07-12 10:26:26,670 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 503 selfloop transitions, 51 changer transitions 36/677 dead transitions. [2022-07-12 10:26:26,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 677 transitions, 9519 flow [2022-07-12 10:26:26,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:26:26,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:26:26,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4048 transitions. [2022-07-12 10:26:26,672 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2022-07-12 10:26:26,672 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4048 transitions. [2022-07-12 10:26:26,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4048 transitions. [2022-07-12 10:26:26,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:26,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4048 transitions. [2022-07-12 10:26:26,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.65714285714286) internal successors, (4048), 35 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:26,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:26,678 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:26,678 INFO L186 Difference]: Start difference. First operand has 521 places, 388 transitions, 3912 flow. Second operand 35 states and 4048 transitions. [2022-07-12 10:26:26,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 677 transitions, 9519 flow [2022-07-12 10:26:27,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 677 transitions, 8844 flow, removed 291 selfloop flow, removed 19 redundant places. [2022-07-12 10:26:27,335 INFO L242 Difference]: Finished difference. Result has 545 places, 410 transitions, 4309 flow [2022-07-12 10:26:27,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3417, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4309, PETRI_PLACES=545, PETRI_TRANSITIONS=410} [2022-07-12 10:26:27,336 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 386 predicate places. [2022-07-12 10:26:27,336 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 410 transitions, 4309 flow [2022-07-12 10:26:27,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:27,336 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:27,337 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:27,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-12 10:26:27,337 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:27,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:27,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1909176201, now seen corresponding path program 14 times [2022-07-12 10:26:27,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:27,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257687954] [2022-07-12 10:26:27,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:27,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:27,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:27,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:27,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257687954] [2022-07-12 10:26:27,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257687954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:27,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:27,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:26:27,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795964193] [2022-07-12 10:26:27,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:27,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:26:27,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:27,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:26:27,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:26:27,768 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:26:27,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 410 transitions, 4309 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:27,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:27,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:26:27,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:31,981 INFO L129 PetriNetUnfolder]: 1809/5984 cut-off events. [2022-07-12 10:26:31,981 INFO L130 PetriNetUnfolder]: For 164457/164477 co-relation queries the response was YES. [2022-07-12 10:26:32,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37477 conditions, 5984 events. 1809/5984 cut-off events. For 164457/164477 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 54046 event pairs, 579 based on Foata normal form. 3/5796 useless extension candidates. Maximal degree in co-relation 37252. Up to 1460 conditions per place. [2022-07-12 10:26:32,092 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 544 selfloop transitions, 61 changer transitions 47/739 dead transitions. [2022-07-12 10:26:32,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 739 transitions, 11826 flow [2022-07-12 10:26:32,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:26:32,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:26:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4039 transitions. [2022-07-12 10:26:32,096 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6556818181818181 [2022-07-12 10:26:32,096 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4039 transitions. [2022-07-12 10:26:32,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4039 transitions. [2022-07-12 10:26:32,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:32,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4039 transitions. [2022-07-12 10:26:32,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.4) internal successors, (4039), 35 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,102 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,102 INFO L186 Difference]: Start difference. First operand has 545 places, 410 transitions, 4309 flow. Second operand 35 states and 4039 transitions. [2022-07-12 10:26:32,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 739 transitions, 11826 flow [2022-07-12 10:26:32,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 739 transitions, 11178 flow, removed 265 selfloop flow, removed 20 redundant places. [2022-07-12 10:26:32,821 INFO L242 Difference]: Finished difference. Result has 570 places, 434 transitions, 4770 flow [2022-07-12 10:26:32,822 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3800, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4770, PETRI_PLACES=570, PETRI_TRANSITIONS=434} [2022-07-12 10:26:32,822 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 411 predicate places. [2022-07-12 10:26:32,822 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 434 transitions, 4770 flow [2022-07-12 10:26:32,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:32,823 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:32,823 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] [2022-07-12 10:26:32,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-12 10:26:32,823 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:32,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:32,824 INFO L85 PathProgramCache]: Analyzing trace with hash -375152665, now seen corresponding path program 15 times [2022-07-12 10:26:32,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:32,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554271616] [2022-07-12 10:26:32,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:32,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:33,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:33,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554271616] [2022-07-12 10:26:33,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554271616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:33,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:33,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:26:33,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315217686] [2022-07-12 10:26:33,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:33,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:26:33,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:33,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:26:33,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:26:33,300 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:26:33,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 434 transitions, 4770 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:33,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:33,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:26:33,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:37,564 INFO L129 PetriNetUnfolder]: 1915/6243 cut-off events. [2022-07-12 10:26:37,564 INFO L130 PetriNetUnfolder]: For 197925/197940 co-relation queries the response was YES. [2022-07-12 10:26:37,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41423 conditions, 6243 events. 1915/6243 cut-off events. For 197925/197940 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 56825 event pairs, 571 based on Foata normal form. 5/6134 useless extension candidates. Maximal degree in co-relation 41185. Up to 2012 conditions per place. [2022-07-12 10:26:37,693 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 552 selfloop transitions, 54 changer transitions 36/729 dead transitions. [2022-07-12 10:26:37,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 729 transitions, 11109 flow [2022-07-12 10:26:37,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:26:37,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:26:37,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4050 transitions. [2022-07-12 10:26:37,696 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6574675324675324 [2022-07-12 10:26:37,696 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4050 transitions. [2022-07-12 10:26:37,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4050 transitions. [2022-07-12 10:26:37,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:37,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4050 transitions. [2022-07-12 10:26:37,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.71428571428571) internal successors, (4050), 35 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:37,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:37,702 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:37,703 INFO L186 Difference]: Start difference. First operand has 570 places, 434 transitions, 4770 flow. Second operand 35 states and 4050 transitions. [2022-07-12 10:26:37,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 729 transitions, 11109 flow [2022-07-12 10:26:38,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 729 transitions, 10303 flow, removed 337 selfloop flow, removed 20 redundant places. [2022-07-12 10:26:38,895 INFO L242 Difference]: Finished difference. Result has 595 places, 458 transitions, 5186 flow [2022-07-12 10:26:38,896 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4167, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5186, PETRI_PLACES=595, PETRI_TRANSITIONS=458} [2022-07-12 10:26:38,896 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 436 predicate places. [2022-07-12 10:26:38,897 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 458 transitions, 5186 flow [2022-07-12 10:26:38,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:38,897 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:38,897 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] [2022-07-12 10:26:38,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-12 10:26:38,898 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:38,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:38,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1705616637, now seen corresponding path program 16 times [2022-07-12 10:26:38,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:38,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083757490] [2022-07-12 10:26:38,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:38,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:39,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:39,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083757490] [2022-07-12 10:26:39,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083757490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:39,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:39,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:26:39,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431714487] [2022-07-12 10:26:39,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:39,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:26:39,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:39,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:26:39,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:26:39,399 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:26:39,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 458 transitions, 5186 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:39,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:39,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:26:39,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:44,255 INFO L129 PetriNetUnfolder]: 2128/7084 cut-off events. [2022-07-12 10:26:44,256 INFO L130 PetriNetUnfolder]: For 222670/222703 co-relation queries the response was YES. [2022-07-12 10:26:44,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46069 conditions, 7084 events. 2128/7084 cut-off events. For 222670/222703 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 66700 event pairs, 684 based on Foata normal form. 3/6846 useless extension candidates. Maximal degree in co-relation 45819. Up to 2645 conditions per place. [2022-07-12 10:26:44,386 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 562 selfloop transitions, 52 changer transitions 52/753 dead transitions. [2022-07-12 10:26:44,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 753 transitions, 12037 flow [2022-07-12 10:26:44,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:26:44,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:26:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4043 transitions. [2022-07-12 10:26:44,388 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6563311688311688 [2022-07-12 10:26:44,388 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4043 transitions. [2022-07-12 10:26:44,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4043 transitions. [2022-07-12 10:26:44,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:44,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4043 transitions. [2022-07-12 10:26:44,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.51428571428572) internal successors, (4043), 35 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:44,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:44,394 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:44,394 INFO L186 Difference]: Start difference. First operand has 595 places, 458 transitions, 5186 flow. Second operand 35 states and 4043 transitions. [2022-07-12 10:26:44,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 753 transitions, 12037 flow [2022-07-12 10:26:45,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 753 transitions, 11363 flow, removed 284 selfloop flow, removed 20 redundant places. [2022-07-12 10:26:45,698 INFO L242 Difference]: Finished difference. Result has 624 places, 486 transitions, 5518 flow [2022-07-12 10:26:45,698 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4623, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5518, PETRI_PLACES=624, PETRI_TRANSITIONS=486} [2022-07-12 10:26:45,699 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 465 predicate places. [2022-07-12 10:26:45,699 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 486 transitions, 5518 flow [2022-07-12 10:26:45,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:45,700 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:45,700 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] [2022-07-12 10:26:45,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-12 10:26:45,700 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:45,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:45,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1903491923, now seen corresponding path program 17 times [2022-07-12 10:26:45,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:45,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191812136] [2022-07-12 10:26:45,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:45,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:46,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:46,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191812136] [2022-07-12 10:26:46,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191812136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:46,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:46,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:26:46,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714173928] [2022-07-12 10:26:46,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:46,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:26:46,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:46,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:26:46,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:26:46,186 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:26:46,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 486 transitions, 5518 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:46,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:46,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:26:46,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:51,415 INFO L129 PetriNetUnfolder]: 2247/7397 cut-off events. [2022-07-12 10:26:51,415 INFO L130 PetriNetUnfolder]: For 260585/260605 co-relation queries the response was YES. [2022-07-12 10:26:51,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50767 conditions, 7397 events. 2247/7397 cut-off events. For 260585/260605 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 70514 event pairs, 699 based on Foata normal form. 5/7267 useless extension candidates. Maximal degree in co-relation 50501. Up to 2373 conditions per place. [2022-07-12 10:26:51,569 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 628 selfloop transitions, 57 changer transitions 36/808 dead transitions. [2022-07-12 10:26:51,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 808 transitions, 12562 flow [2022-07-12 10:26:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:26:51,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:26:51,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4065 transitions. [2022-07-12 10:26:51,572 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6599025974025974 [2022-07-12 10:26:51,572 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4065 transitions. [2022-07-12 10:26:51,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4065 transitions. [2022-07-12 10:26:51,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:51,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4065 transitions. [2022-07-12 10:26:51,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 116.14285714285714) internal successors, (4065), 35 states have internal predecessors, (4065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:51,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:51,577 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:51,577 INFO L186 Difference]: Start difference. First operand has 624 places, 486 transitions, 5518 flow. Second operand 35 states and 4065 transitions. [2022-07-12 10:26:51,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 808 transitions, 12562 flow [2022-07-12 10:26:53,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 808 transitions, 11798 flow, removed 351 selfloop flow, removed 18 redundant places. [2022-07-12 10:26:53,265 INFO L242 Difference]: Finished difference. Result has 653 places, 511 transitions, 6055 flow [2022-07-12 10:26:53,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4953, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6055, PETRI_PLACES=653, PETRI_TRANSITIONS=511} [2022-07-12 10:26:53,266 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 494 predicate places. [2022-07-12 10:26:53,266 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 511 transitions, 6055 flow [2022-07-12 10:26:53,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:53,267 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:53,267 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] [2022-07-12 10:26:53,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-12 10:26:53,267 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:53,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:53,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1163892451, now seen corresponding path program 18 times [2022-07-12 10:26:53,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:53,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597511100] [2022-07-12 10:26:53,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:53,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:53,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:53,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597511100] [2022-07-12 10:26:53,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597511100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:53,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:53,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:26:53,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141961116] [2022-07-12 10:26:53,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:53,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:26:53,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:26:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:26:53,711 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:26:53,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 511 transitions, 6055 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:53,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:53,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:26:53,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:59,297 INFO L129 PetriNetUnfolder]: 2382/7881 cut-off events. [2022-07-12 10:26:59,297 INFO L130 PetriNetUnfolder]: For 303640/303672 co-relation queries the response was YES. [2022-07-12 10:26:59,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55877 conditions, 7881 events. 2382/7881 cut-off events. For 303640/303672 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 76270 event pairs, 891 based on Foata normal form. 5/7612 useless extension candidates. Maximal degree in co-relation 55598. Up to 1903 conditions per place. [2022-07-12 10:26:59,466 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 654 selfloop transitions, 60 changer transitions 47/848 dead transitions. [2022-07-12 10:26:59,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 848 transitions, 14770 flow [2022-07-12 10:26:59,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:26:59,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:26:59,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4053 transitions. [2022-07-12 10:26:59,468 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6579545454545455 [2022-07-12 10:26:59,468 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4053 transitions. [2022-07-12 10:26:59,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4053 transitions. [2022-07-12 10:26:59,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:59,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4053 transitions. [2022-07-12 10:26:59,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.8) internal successors, (4053), 35 states have internal predecessors, (4053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:59,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:59,474 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:26:59,474 INFO L186 Difference]: Start difference. First operand has 653 places, 511 transitions, 6055 flow. Second operand 35 states and 4053 transitions. [2022-07-12 10:26:59,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 848 transitions, 14770 flow [2022-07-12 10:27:01,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 848 transitions, 14000 flow, removed 342 selfloop flow, removed 20 redundant places. [2022-07-12 10:27:01,033 INFO L242 Difference]: Finished difference. Result has 680 places, 536 transitions, 6568 flow [2022-07-12 10:27:01,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5440, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6568, PETRI_PLACES=680, PETRI_TRANSITIONS=536} [2022-07-12 10:27:01,034 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 521 predicate places. [2022-07-12 10:27:01,034 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 536 transitions, 6568 flow [2022-07-12 10:27:01,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:01,034 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:01,034 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:01,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-12 10:27:01,035 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:01,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:01,035 INFO L85 PathProgramCache]: Analyzing trace with hash -115917063, now seen corresponding path program 19 times [2022-07-12 10:27:01,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:01,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78702034] [2022-07-12 10:27:01,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:01,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:01,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:01,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:01,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78702034] [2022-07-12 10:27:01,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78702034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:01,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:01,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:27:01,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385995901] [2022-07-12 10:27:01,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:01,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:27:01,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:01,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:27:01,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:27:01,460 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:27:01,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 536 transitions, 6568 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:01,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:01,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:27:01,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:07,273 INFO L129 PetriNetUnfolder]: 2394/7884 cut-off events. [2022-07-12 10:27:07,273 INFO L130 PetriNetUnfolder]: For 334008/334034 co-relation queries the response was YES. [2022-07-12 10:27:07,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57840 conditions, 7884 events. 2394/7884 cut-off events. For 334008/334034 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 76331 event pairs, 790 based on Foata normal form. 5/7723 useless extension candidates. Maximal degree in co-relation 57548. Up to 2654 conditions per place. [2022-07-12 10:27:07,446 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 658 selfloop transitions, 62 changer transitions 44/851 dead transitions. [2022-07-12 10:27:07,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 851 transitions, 14134 flow [2022-07-12 10:27:07,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:27:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:27:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4033 transitions. [2022-07-12 10:27:07,449 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6547077922077922 [2022-07-12 10:27:07,449 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4033 transitions. [2022-07-12 10:27:07,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4033 transitions. [2022-07-12 10:27:07,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:07,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4033 transitions. [2022-07-12 10:27:07,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.22857142857143) internal successors, (4033), 35 states have internal predecessors, (4033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:07,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:07,454 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:07,455 INFO L186 Difference]: Start difference. First operand has 680 places, 536 transitions, 6568 flow. Second operand 35 states and 4033 transitions. [2022-07-12 10:27:07,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 851 transitions, 14134 flow [2022-07-12 10:27:09,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 851 transitions, 13177 flow, removed 434 selfloop flow, removed 20 redundant places. [2022-07-12 10:27:09,767 INFO L242 Difference]: Finished difference. Result has 706 places, 559 transitions, 6901 flow [2022-07-12 10:27:09,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5835, PETRI_DIFFERENCE_MINUEND_PLACES=645, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6901, PETRI_PLACES=706, PETRI_TRANSITIONS=559} [2022-07-12 10:27:09,767 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 547 predicate places. [2022-07-12 10:27:09,768 INFO L495 AbstractCegarLoop]: Abstraction has has 706 places, 559 transitions, 6901 flow [2022-07-12 10:27:09,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:09,768 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:09,768 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] [2022-07-12 10:27:09,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-12 10:27:09,769 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:09,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:09,769 INFO L85 PathProgramCache]: Analyzing trace with hash 920759187, now seen corresponding path program 20 times [2022-07-12 10:27:09,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:09,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169313372] [2022-07-12 10:27:09,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:09,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:10,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:10,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:10,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169313372] [2022-07-12 10:27:10,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169313372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:10,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:10,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-12 10:27:10,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322110202] [2022-07-12 10:27:10,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:10,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:27:10,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:10,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:27:10,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:27:10,338 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-07-12 10:27:10,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 559 transitions, 6901 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:27:10,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:10,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-07-12 10:27:10,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand