./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-match-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-match-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 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:23:46,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:23:46,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:23:46,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:23:46,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:23:46,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:23:46,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:23:46,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:23:46,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:23:46,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:23:46,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:23:46,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:23:46,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:23:46,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:23:46,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:23:46,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:23:46,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:23:46,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:23:46,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:23:46,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:23:46,969 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:23:46,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:23:46,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:23:46,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:23:46,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:23:46,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:23:46,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:23:46,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:23:46,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:23:46,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:23:46,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:23:46,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:23:46,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:23:46,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:23:46,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:23:46,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:23:46,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:23:46,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:23:46,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:23:46,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:23:46,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:23:46,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:23:46,991 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:23:47,017 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:23:47,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:23:47,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:23:47,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:23:47,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:23:47,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:23:47,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:23:47,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:23:47,021 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:23:47,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:23:47,022 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:23:47,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:23:47,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:23:47,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:23:47,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:23:47,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:23:47,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:23:47,023 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:23:47,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:23:47,023 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:23:47,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:23:47,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:23:47,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:23:47,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:23:47,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:23:47,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:23:47,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:23:47,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:23:47,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:23:47,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:23:47,026 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:23:47,026 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:23:47,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:23:47,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac [2022-07-12 10:23:47,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:23:47,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:23:47,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:23:47,285 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:23:47,287 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:23:47,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-07-12 10:23:47,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b52fe637/150180081fae4705a85147b8c7f38859/FLAG5cdba480e [2022-07-12 10:23:47,817 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:23:47,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-07-12 10:23:47,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b52fe637/150180081fae4705a85147b8c7f38859/FLAG5cdba480e [2022-07-12 10:23:48,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b52fe637/150180081fae4705a85147b8c7f38859 [2022-07-12 10:23:48,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:23:48,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:23:48,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:23:48,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:23:48,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:23:48,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:23:48" (1/1) ... [2022-07-12 10:23:48,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4595d983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:48, skipping insertion in model container [2022-07-12 10:23:48,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:23:48" (1/1) ... [2022-07-12 10:23:48,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:23:48,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:23:48,409 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-match-symm.wvr.c[2584,2597] [2022-07-12 10:23:48,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:23:48,420 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:23:48,438 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-match-symm.wvr.c[2584,2597] [2022-07-12 10:23:48,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:23:48,451 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:23:48,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:48 WrapperNode [2022-07-12 10:23:48,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:23:48,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:23:48,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:23:48,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:23:48,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:48" (1/1) ... [2022-07-12 10:23:48,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:48" (1/1) ... [2022-07-12 10:23:48,486 INFO L137 Inliner]: procedures = 22, calls = 27, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 180 [2022-07-12 10:23:48,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:23:48,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:23:48,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:23:48,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:23:48,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:48" (1/1) ... [2022-07-12 10:23:48,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:48" (1/1) ... [2022-07-12 10:23:48,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:48" (1/1) ... [2022-07-12 10:23:48,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:48" (1/1) ... [2022-07-12 10:23:48,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:48" (1/1) ... [2022-07-12 10:23:48,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:48" (1/1) ... [2022-07-12 10:23:48,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:48" (1/1) ... [2022-07-12 10:23:48,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:23:48,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:23:48,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:23:48,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:23:48,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:48" (1/1) ... [2022-07-12 10:23:48,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:23:48,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:23:48,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:23:48,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:23:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:23:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:23:48,573 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:23:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:23:48,573 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:23:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:23:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:23:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:23:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:23:48,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:23:48,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:23:48,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:23:48,576 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:23:48,638 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:23:48,640 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:23:48,953 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:23:48,964 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:23:48,964 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:23:48,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:23:48 BoogieIcfgContainer [2022-07-12 10:23:48,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:23:48,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:23:48,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:23:48,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:23:48,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:23:48" (1/3) ... [2022-07-12 10:23:48,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20388d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:23:48, skipping insertion in model container [2022-07-12 10:23:48,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:48" (2/3) ... [2022-07-12 10:23:48,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20388d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:23:48, skipping insertion in model container [2022-07-12 10:23:48,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:23:48" (3/3) ... [2022-07-12 10:23:48,973 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-match-symm.wvr.c [2022-07-12 10:23:48,977 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:23:48,985 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:23:48,985 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:23:48,985 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:23:49,094 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-12 10:23:49,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 240 places, 252 transitions, 520 flow [2022-07-12 10:23:49,210 INFO L129 PetriNetUnfolder]: 19/250 cut-off events. [2022-07-12 10:23:49,210 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:23:49,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 250 events. 19/250 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 275 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2022-07-12 10:23:49,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 252 transitions, 520 flow [2022-07-12 10:23:49,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 241 transitions, 494 flow [2022-07-12 10:23:49,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:23:49,253 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@30c1193a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@42410e1a [2022-07-12 10:23:49,254 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-12 10:23:49,304 INFO L129 PetriNetUnfolder]: 19/240 cut-off events. [2022-07-12 10:23:49,304 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:23:49,304 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:49,305 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:49,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:49,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:49,315 INFO L85 PathProgramCache]: Analyzing trace with hash -511755063, now seen corresponding path program 1 times [2022-07-12 10:23:49,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:49,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294364335] [2022-07-12 10:23:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:49,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:49,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:49,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294364335] [2022-07-12 10:23:49,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294364335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:49,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:49,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:23:49,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852939775] [2022-07-12 10:23:49,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:49,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:23:49,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:49,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:23:49,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:23:49,757 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-07-12 10:23:49,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 241 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:49,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:49,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-07-12 10:23:49,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:49,942 INFO L129 PetriNetUnfolder]: 48/614 cut-off events. [2022-07-12 10:23:49,942 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-07-12 10:23:49,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 614 events. 48/614 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2804 event pairs, 15 based on Foata normal form. 44/596 useless extension candidates. Maximal degree in co-relation 531. Up to 49 conditions per place. [2022-07-12 10:23:49,950 INFO L132 encePairwiseOnDemand]: 235/252 looper letters, 21 selfloop transitions, 2 changer transitions 3/237 dead transitions. [2022-07-12 10:23:49,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 237 transitions, 541 flow [2022-07-12 10:23:49,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:23:49,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:23:49,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2022-07-12 10:23:49,969 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9537037037037037 [2022-07-12 10:23:49,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2022-07-12 10:23:49,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2022-07-12 10:23:49,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:49,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2022-07-12 10:23:49,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,004 INFO L186 Difference]: Start difference. First operand has 229 places, 241 transitions, 494 flow. Second operand 3 states and 721 transitions. [2022-07-12 10:23:50,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 237 transitions, 541 flow [2022-07-12 10:23:50,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 237 transitions, 527 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:23:50,016 INFO L242 Difference]: Finished difference. Result has 229 places, 229 transitions, 482 flow [2022-07-12 10:23:50,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=229, PETRI_TRANSITIONS=229} [2022-07-12 10:23:50,021 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 0 predicate places. [2022-07-12 10:23:50,021 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 229 transitions, 482 flow [2022-07-12 10:23:50,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,022 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:50,023 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:50,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:23:50,024 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:50,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash 803898885, now seen corresponding path program 2 times [2022-07-12 10:23:50,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:50,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734263206] [2022-07-12 10:23:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:50,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:50,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:50,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734263206] [2022-07-12 10:23:50,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734263206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:50,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:50,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:23:50,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67968149] [2022-07-12 10:23:50,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:50,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:23:50,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:50,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:23:50,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:23:50,191 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-07-12 10:23:50,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 229 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:50,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-07-12 10:23:50,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:50,325 INFO L129 PetriNetUnfolder]: 45/636 cut-off events. [2022-07-12 10:23:50,329 INFO L130 PetriNetUnfolder]: For 57/74 co-relation queries the response was YES. [2022-07-12 10:23:50,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 636 events. 45/636 cut-off events. For 57/74 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2802 event pairs, 14 based on Foata normal form. 6/602 useless extension candidates. Maximal degree in co-relation 579. Up to 51 conditions per place. [2022-07-12 10:23:50,333 INFO L132 encePairwiseOnDemand]: 246/252 looper letters, 23 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2022-07-12 10:23:50,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 236 transitions, 557 flow [2022-07-12 10:23:50,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:23:50,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:23:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2022-07-12 10:23:50,336 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2022-07-12 10:23:50,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2022-07-12 10:23:50,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2022-07-12 10:23:50,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:50,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2022-07-12 10:23:50,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,341 INFO L186 Difference]: Start difference. First operand has 229 places, 229 transitions, 482 flow. Second operand 3 states and 699 transitions. [2022-07-12 10:23:50,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 236 transitions, 557 flow [2022-07-12 10:23:50,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 236 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:23:50,351 INFO L242 Difference]: Finished difference. Result has 229 places, 231 transitions, 508 flow [2022-07-12 10:23:50,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=229, PETRI_TRANSITIONS=231} [2022-07-12 10:23:50,353 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 0 predicate places. [2022-07-12 10:23:50,353 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 231 transitions, 508 flow [2022-07-12 10:23:50,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,354 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:50,354 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:50,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:23:50,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:50,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:50,355 INFO L85 PathProgramCache]: Analyzing trace with hash -823811011, now seen corresponding path program 1 times [2022-07-12 10:23:50,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:50,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855245613] [2022-07-12 10:23:50,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:50,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:50,633 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 10:23:50,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:50,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855245613] [2022-07-12 10:23:50,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855245613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:50,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:50,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:50,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708412155] [2022-07-12 10:23:50,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:50,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:50,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:50,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:50,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:50,640 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:50,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 231 transitions, 508 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:50,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:50,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:50,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:51,008 INFO L129 PetriNetUnfolder]: 137/955 cut-off events. [2022-07-12 10:23:51,008 INFO L130 PetriNetUnfolder]: For 47/55 co-relation queries the response was YES. [2022-07-12 10:23:51,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1381 conditions, 955 events. 137/955 cut-off events. For 47/55 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5273 event pairs, 73 based on Foata normal form. 1/886 useless extension candidates. Maximal degree in co-relation 996. Up to 229 conditions per place. [2022-07-12 10:23:51,014 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 61 selfloop transitions, 5 changer transitions 29/297 dead transitions. [2022-07-12 10:23:51,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 297 transitions, 841 flow [2022-07-12 10:23:51,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:23:51,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:23:51,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3840 transitions. [2022-07-12 10:23:51,022 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8465608465608465 [2022-07-12 10:23:51,022 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3840 transitions. [2022-07-12 10:23:51,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3840 transitions. [2022-07-12 10:23:51,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:51,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3840 transitions. [2022-07-12 10:23:51,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 213.33333333333334) internal successors, (3840), 18 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:51,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:51,042 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:51,042 INFO L186 Difference]: Start difference. First operand has 229 places, 231 transitions, 508 flow. Second operand 18 states and 3840 transitions. [2022-07-12 10:23:51,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 297 transitions, 841 flow [2022-07-12 10:23:51,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 297 transitions, 839 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:23:51,049 INFO L242 Difference]: Finished difference. Result has 261 places, 235 transitions, 577 flow [2022-07-12 10:23:51,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=577, PETRI_PLACES=261, PETRI_TRANSITIONS=235} [2022-07-12 10:23:51,050 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 32 predicate places. [2022-07-12 10:23:51,050 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 235 transitions, 577 flow [2022-07-12 10:23:51,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:51,051 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:51,051 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:51,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:23:51,052 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:51,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:51,052 INFO L85 PathProgramCache]: Analyzing trace with hash 106633647, now seen corresponding path program 2 times [2022-07-12 10:23:51,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:51,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658444534] [2022-07-12 10:23:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:51,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:51,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:51,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:51,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658444534] [2022-07-12 10:23:51,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658444534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:51,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:51,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:51,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465056290] [2022-07-12 10:23:51,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:51,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:51,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:51,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:51,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:51,220 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:51,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 235 transitions, 577 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:51,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:51,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:51,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:51,623 INFO L129 PetriNetUnfolder]: 141/1094 cut-off events. [2022-07-12 10:23:51,623 INFO L130 PetriNetUnfolder]: For 696/729 co-relation queries the response was YES. [2022-07-12 10:23:51,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 1094 events. 141/1094 cut-off events. For 696/729 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6470 event pairs, 78 based on Foata normal form. 1/1021 useless extension candidates. Maximal degree in co-relation 2015. Up to 248 conditions per place. [2022-07-12 10:23:51,631 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 76 selfloop transitions, 3 changer transitions 25/306 dead transitions. [2022-07-12 10:23:51,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 306 transitions, 1135 flow [2022-07-12 10:23:51,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:23:51,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:23:51,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3625 transitions. [2022-07-12 10:23:51,638 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.846171802054155 [2022-07-12 10:23:51,639 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3625 transitions. [2022-07-12 10:23:51,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3625 transitions. [2022-07-12 10:23:51,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:51,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3625 transitions. [2022-07-12 10:23:51,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 213.23529411764707) internal successors, (3625), 17 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:51,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:51,655 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:51,655 INFO L186 Difference]: Start difference. First operand has 261 places, 235 transitions, 577 flow. Second operand 17 states and 3625 transitions. [2022-07-12 10:23:51,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 306 transitions, 1135 flow [2022-07-12 10:23:51,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 306 transitions, 1081 flow, removed 25 selfloop flow, removed 8 redundant places. [2022-07-12 10:23:51,667 INFO L242 Difference]: Finished difference. Result has 273 places, 237 transitions, 625 flow [2022-07-12 10:23:51,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=625, PETRI_PLACES=273, PETRI_TRANSITIONS=237} [2022-07-12 10:23:51,669 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 44 predicate places. [2022-07-12 10:23:51,669 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 237 transitions, 625 flow [2022-07-12 10:23:51,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:51,670 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:51,670 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:51,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:23:51,671 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:51,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:51,671 INFO L85 PathProgramCache]: Analyzing trace with hash -468348399, now seen corresponding path program 3 times [2022-07-12 10:23:51,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:51,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317791436] [2022-07-12 10:23:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:51,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:51,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:51,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317791436] [2022-07-12 10:23:51,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317791436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:51,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:51,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:51,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635595908] [2022-07-12 10:23:51,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:51,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:51,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:51,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:51,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:51,819 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:51,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 237 transitions, 625 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:51,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:51,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:51,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:52,190 INFO L129 PetriNetUnfolder]: 145/1099 cut-off events. [2022-07-12 10:23:52,191 INFO L130 PetriNetUnfolder]: For 1611/1642 co-relation queries the response was YES. [2022-07-12 10:23:52,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2418 conditions, 1099 events. 145/1099 cut-off events. For 1611/1642 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6513 event pairs, 84 based on Foata normal form. 1/1023 useless extension candidates. Maximal degree in co-relation 2314. Up to 287 conditions per place. [2022-07-12 10:23:52,200 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 46 selfloop transitions, 12 changer transitions 20/280 dead transitions. [2022-07-12 10:23:52,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 280 transitions, 1115 flow [2022-07-12 10:23:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:23:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:23:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3401 transitions. [2022-07-12 10:23:52,207 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8435019841269841 [2022-07-12 10:23:52,207 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3401 transitions. [2022-07-12 10:23:52,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3401 transitions. [2022-07-12 10:23:52,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:52,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3401 transitions. [2022-07-12 10:23:52,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.5625) internal successors, (3401), 16 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:52,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:52,223 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:52,223 INFO L186 Difference]: Start difference. First operand has 273 places, 237 transitions, 625 flow. Second operand 16 states and 3401 transitions. [2022-07-12 10:23:52,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 280 transitions, 1115 flow [2022-07-12 10:23:52,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 280 transitions, 1074 flow, removed 19 selfloop flow, removed 9 redundant places. [2022-07-12 10:23:52,235 INFO L242 Difference]: Finished difference. Result has 275 places, 247 transitions, 764 flow [2022-07-12 10:23:52,236 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=764, PETRI_PLACES=275, PETRI_TRANSITIONS=247} [2022-07-12 10:23:52,237 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 46 predicate places. [2022-07-12 10:23:52,237 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 247 transitions, 764 flow [2022-07-12 10:23:52,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:52,238 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:52,238 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:52,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:23:52,239 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:52,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:52,239 INFO L85 PathProgramCache]: Analyzing trace with hash -678703279, now seen corresponding path program 4 times [2022-07-12 10:23:52,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:52,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398520377] [2022-07-12 10:23:52,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:52,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:52,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:52,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:52,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398520377] [2022-07-12 10:23:52,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398520377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:52,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:52,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:52,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256611846] [2022-07-12 10:23:52,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:52,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:52,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:52,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:52,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:52,363 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:52,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 247 transitions, 764 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:52,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:52,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:52,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:52,709 INFO L129 PetriNetUnfolder]: 151/1128 cut-off events. [2022-07-12 10:23:52,709 INFO L130 PetriNetUnfolder]: For 2074/2133 co-relation queries the response was YES. [2022-07-12 10:23:52,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 1128 events. 151/1128 cut-off events. For 2074/2133 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6788 event pairs, 89 based on Foata normal form. 1/1056 useless extension candidates. Maximal degree in co-relation 2543. Up to 311 conditions per place. [2022-07-12 10:23:52,719 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 49 selfloop transitions, 19 changer transitions 20/290 dead transitions. [2022-07-12 10:23:52,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 290 transitions, 1311 flow [2022-07-12 10:23:52,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:23:52,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:23:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2983 transitions. [2022-07-12 10:23:52,726 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8455215419501134 [2022-07-12 10:23:52,726 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2983 transitions. [2022-07-12 10:23:52,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2983 transitions. [2022-07-12 10:23:52,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:52,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2983 transitions. [2022-07-12 10:23:52,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 213.07142857142858) internal successors, (2983), 14 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:52,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:52,739 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:52,739 INFO L186 Difference]: Start difference. First operand has 275 places, 247 transitions, 764 flow. Second operand 14 states and 2983 transitions. [2022-07-12 10:23:52,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 290 transitions, 1311 flow [2022-07-12 10:23:52,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 290 transitions, 1275 flow, removed 18 selfloop flow, removed 3 redundant places. [2022-07-12 10:23:52,756 INFO L242 Difference]: Finished difference. Result has 288 places, 257 transitions, 932 flow [2022-07-12 10:23:52,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=932, PETRI_PLACES=288, PETRI_TRANSITIONS=257} [2022-07-12 10:23:52,757 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 59 predicate places. [2022-07-12 10:23:52,758 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 257 transitions, 932 flow [2022-07-12 10:23:52,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:52,759 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:52,759 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:52,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:23:52,759 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:52,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:52,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1634795281, now seen corresponding path program 5 times [2022-07-12 10:23:52,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:52,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689662269] [2022-07-12 10:23:52,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:52,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:52,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:52,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:52,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689662269] [2022-07-12 10:23:52,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689662269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:52,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:52,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:52,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93356233] [2022-07-12 10:23:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:52,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:52,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:52,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:52,898 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:52,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 257 transitions, 932 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:52,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:52,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:52,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:53,262 INFO L129 PetriNetUnfolder]: 148/1127 cut-off events. [2022-07-12 10:23:53,263 INFO L130 PetriNetUnfolder]: For 2892/2949 co-relation queries the response was YES. [2022-07-12 10:23:53,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2870 conditions, 1127 events. 148/1127 cut-off events. For 2892/2949 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6844 event pairs, 82 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 2757. Up to 298 conditions per place. [2022-07-12 10:23:53,273 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 56 selfloop transitions, 16 changer transitions 24/298 dead transitions. [2022-07-12 10:23:53,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 298 transitions, 1570 flow [2022-07-12 10:23:53,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:23:53,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:23:53,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3192 transitions. [2022-07-12 10:23:53,279 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-07-12 10:23:53,279 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3192 transitions. [2022-07-12 10:23:53,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3192 transitions. [2022-07-12 10:23:53,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:53,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3192 transitions. [2022-07-12 10:23:53,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.8) internal successors, (3192), 15 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,292 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,292 INFO L186 Difference]: Start difference. First operand has 288 places, 257 transitions, 932 flow. Second operand 15 states and 3192 transitions. [2022-07-12 10:23:53,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 298 transitions, 1570 flow [2022-07-12 10:23:53,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 298 transitions, 1475 flow, removed 38 selfloop flow, removed 6 redundant places. [2022-07-12 10:23:53,311 INFO L242 Difference]: Finished difference. Result has 301 places, 262 transitions, 1016 flow [2022-07-12 10:23:53,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1016, PETRI_PLACES=301, PETRI_TRANSITIONS=262} [2022-07-12 10:23:53,312 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 72 predicate places. [2022-07-12 10:23:53,313 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 262 transitions, 1016 flow [2022-07-12 10:23:53,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,313 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:53,314 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:53,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:23:53,314 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:53,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:53,315 INFO L85 PathProgramCache]: Analyzing trace with hash -67705479, now seen corresponding path program 6 times [2022-07-12 10:23:53,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:53,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058298063] [2022-07-12 10:23:53,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:53,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:53,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:53,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058298063] [2022-07-12 10:23:53,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058298063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:53,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:53,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:53,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439569184] [2022-07-12 10:23:53,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:53,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:53,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:53,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:53,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:53,456 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:53,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 262 transitions, 1016 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:53,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:53,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:53,829 INFO L129 PetriNetUnfolder]: 142/1116 cut-off events. [2022-07-12 10:23:53,829 INFO L130 PetriNetUnfolder]: For 3368/3439 co-relation queries the response was YES. [2022-07-12 10:23:53,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2860 conditions, 1116 events. 142/1116 cut-off events. For 3368/3439 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6771 event pairs, 84 based on Foata normal form. 7/1046 useless extension candidates. Maximal degree in co-relation 2741. Up to 292 conditions per place. [2022-07-12 10:23:53,841 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 51 selfloop transitions, 11 changer transitions 24/288 dead transitions. [2022-07-12 10:23:53,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 288 transitions, 1438 flow [2022-07-12 10:23:53,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:23:53,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:23:53,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2769 transitions. [2022-07-12 10:23:53,847 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2022-07-12 10:23:53,847 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2769 transitions. [2022-07-12 10:23:53,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2769 transitions. [2022-07-12 10:23:53,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:53,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2769 transitions. [2022-07-12 10:23:53,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 213.0) internal successors, (2769), 13 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,858 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,859 INFO L186 Difference]: Start difference. First operand has 301 places, 262 transitions, 1016 flow. Second operand 13 states and 2769 transitions. [2022-07-12 10:23:53,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 288 transitions, 1438 flow [2022-07-12 10:23:53,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 288 transitions, 1339 flow, removed 44 selfloop flow, removed 9 redundant places. [2022-07-12 10:23:53,883 INFO L242 Difference]: Finished difference. Result has 300 places, 254 transitions, 886 flow [2022-07-12 10:23:53,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=886, PETRI_PLACES=300, PETRI_TRANSITIONS=254} [2022-07-12 10:23:53,884 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 71 predicate places. [2022-07-12 10:23:53,884 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 254 transitions, 886 flow [2022-07-12 10:23:53,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:53,885 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:53,885 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:53,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:23:53,886 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:53,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:53,886 INFO L85 PathProgramCache]: Analyzing trace with hash 32274999, now seen corresponding path program 7 times [2022-07-12 10:23:53,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:53,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593387309] [2022-07-12 10:23:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:53,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:54,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:54,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593387309] [2022-07-12 10:23:54,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593387309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:54,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:54,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:54,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103561910] [2022-07-12 10:23:54,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:54,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:54,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:54,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:54,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:54,015 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:54,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 254 transitions, 886 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:54,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:54,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:54,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:54,351 INFO L129 PetriNetUnfolder]: 140/1101 cut-off events. [2022-07-12 10:23:54,351 INFO L130 PetriNetUnfolder]: For 2817/2873 co-relation queries the response was YES. [2022-07-12 10:23:54,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 1101 events. 140/1101 cut-off events. For 2817/2873 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6616 event pairs, 81 based on Foata normal form. 3/1029 useless extension candidates. Maximal degree in co-relation 2628. Up to 286 conditions per place. [2022-07-12 10:23:54,362 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 48 selfloop transitions, 14 changer transitions 23/287 dead transitions. [2022-07-12 10:23:54,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 287 transitions, 1399 flow [2022-07-12 10:23:54,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:23:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:23:54,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3191 transitions. [2022-07-12 10:23:54,367 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8441798941798941 [2022-07-12 10:23:54,367 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3191 transitions. [2022-07-12 10:23:54,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3191 transitions. [2022-07-12 10:23:54,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:54,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3191 transitions. [2022-07-12 10:23:54,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.73333333333332) internal successors, (3191), 15 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:54,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:54,379 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:54,379 INFO L186 Difference]: Start difference. First operand has 300 places, 254 transitions, 886 flow. Second operand 15 states and 3191 transitions. [2022-07-12 10:23:54,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 287 transitions, 1399 flow [2022-07-12 10:23:54,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 287 transitions, 1311 flow, removed 27 selfloop flow, removed 11 redundant places. [2022-07-12 10:23:54,397 INFO L242 Difference]: Finished difference. Result has 300 places, 258 transitions, 967 flow [2022-07-12 10:23:54,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=967, PETRI_PLACES=300, PETRI_TRANSITIONS=258} [2022-07-12 10:23:54,399 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 71 predicate places. [2022-07-12 10:23:54,399 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 258 transitions, 967 flow [2022-07-12 10:23:54,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:54,400 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:54,400 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:54,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:23:54,400 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:54,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:54,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1584975147, now seen corresponding path program 8 times [2022-07-12 10:23:54,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:54,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505704981] [2022-07-12 10:23:54,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:54,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:54,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:54,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:54,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505704981] [2022-07-12 10:23:54,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505704981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:54,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:54,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:54,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038172837] [2022-07-12 10:23:54,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:54,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:54,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:54,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:54,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:54,549 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:54,550 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 258 transitions, 967 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:54,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:54,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:54,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:54,851 INFO L129 PetriNetUnfolder]: 133/1068 cut-off events. [2022-07-12 10:23:54,852 INFO L130 PetriNetUnfolder]: For 2580/2637 co-relation queries the response was YES. [2022-07-12 10:23:54,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2618 conditions, 1068 events. 133/1068 cut-off events. For 2580/2637 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6270 event pairs, 81 based on Foata normal form. 3/996 useless extension candidates. Maximal degree in co-relation 2500. Up to 283 conditions per place. [2022-07-12 10:23:54,863 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 45 selfloop transitions, 4 changer transitions 26/277 dead transitions. [2022-07-12 10:23:54,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 277 transitions, 1266 flow [2022-07-12 10:23:54,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:23:54,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:23:54,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2975 transitions. [2022-07-12 10:23:54,867 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8432539682539683 [2022-07-12 10:23:54,867 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2975 transitions. [2022-07-12 10:23:54,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2975 transitions. [2022-07-12 10:23:54,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:54,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2975 transitions. [2022-07-12 10:23:54,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.5) internal successors, (2975), 14 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:54,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:54,882 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:54,883 INFO L186 Difference]: Start difference. First operand has 300 places, 258 transitions, 967 flow. Second operand 14 states and 2975 transitions. [2022-07-12 10:23:54,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 277 transitions, 1266 flow [2022-07-12 10:23:54,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 277 transitions, 1191 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-07-12 10:23:54,902 INFO L242 Difference]: Finished difference. Result has 303 places, 247 transitions, 782 flow [2022-07-12 10:23:54,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=782, PETRI_PLACES=303, PETRI_TRANSITIONS=247} [2022-07-12 10:23:54,904 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 74 predicate places. [2022-07-12 10:23:54,904 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 247 transitions, 782 flow [2022-07-12 10:23:54,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:54,905 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:54,905 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:54,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:23:54,906 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:54,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:54,906 INFO L85 PathProgramCache]: Analyzing trace with hash 4897569, now seen corresponding path program 9 times [2022-07-12 10:23:54,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:54,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433498599] [2022-07-12 10:23:54,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:54,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:55,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:55,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433498599] [2022-07-12 10:23:55,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433498599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:55,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:55,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:55,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261348542] [2022-07-12 10:23:55,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:55,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:55,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:55,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:55,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:55,040 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:55,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 247 transitions, 782 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:55,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:55,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:55,353 INFO L129 PetriNetUnfolder]: 132/1083 cut-off events. [2022-07-12 10:23:55,354 INFO L130 PetriNetUnfolder]: For 2334/2373 co-relation queries the response was YES. [2022-07-12 10:23:55,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 1083 events. 132/1083 cut-off events. For 2334/2373 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6474 event pairs, 84 based on Foata normal form. 2/1012 useless extension candidates. Maximal degree in co-relation 2494. Up to 293 conditions per place. [2022-07-12 10:23:55,364 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 44 selfloop transitions, 10 changer transitions 26/282 dead transitions. [2022-07-12 10:23:55,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 282 transitions, 1250 flow [2022-07-12 10:23:55,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:23:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:23:55,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3401 transitions. [2022-07-12 10:23:55,369 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8435019841269841 [2022-07-12 10:23:55,369 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3401 transitions. [2022-07-12 10:23:55,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3401 transitions. [2022-07-12 10:23:55,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:55,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3401 transitions. [2022-07-12 10:23:55,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.5625) internal successors, (3401), 16 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,379 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,380 INFO L186 Difference]: Start difference. First operand has 303 places, 247 transitions, 782 flow. Second operand 16 states and 3401 transitions. [2022-07-12 10:23:55,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 282 transitions, 1250 flow [2022-07-12 10:23:55,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 282 transitions, 1136 flow, removed 26 selfloop flow, removed 17 redundant places. [2022-07-12 10:23:55,395 INFO L242 Difference]: Finished difference. Result has 293 places, 248 transitions, 803 flow [2022-07-12 10:23:55,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=803, PETRI_PLACES=293, PETRI_TRANSITIONS=248} [2022-07-12 10:23:55,396 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 64 predicate places. [2022-07-12 10:23:55,396 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 248 transitions, 803 flow [2022-07-12 10:23:55,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,397 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:55,397 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:55,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:23:55,398 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:55,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:55,398 INFO L85 PathProgramCache]: Analyzing trace with hash 601347723, now seen corresponding path program 10 times [2022-07-12 10:23:55,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:55,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159979347] [2022-07-12 10:23:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:55,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:55,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:55,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:55,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159979347] [2022-07-12 10:23:55,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159979347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:55,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:55,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:55,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102805245] [2022-07-12 10:23:55,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:55,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:55,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:55,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:55,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:55,512 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:55,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 248 transitions, 803 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:55,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:55,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:55,815 INFO L129 PetriNetUnfolder]: 127/994 cut-off events. [2022-07-12 10:23:55,815 INFO L130 PetriNetUnfolder]: For 1863/1899 co-relation queries the response was YES. [2022-07-12 10:23:55,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2278 conditions, 994 events. 127/994 cut-off events. For 1863/1899 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5557 event pairs, 84 based on Foata normal form. 2/923 useless extension candidates. Maximal degree in co-relation 2237. Up to 276 conditions per place. [2022-07-12 10:23:55,825 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 39 selfloop transitions, 2 changer transitions 28/269 dead transitions. [2022-07-12 10:23:55,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 269 transitions, 1061 flow [2022-07-12 10:23:55,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:23:55,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:23:55,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2976 transitions. [2022-07-12 10:23:55,830 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8435374149659864 [2022-07-12 10:23:55,830 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2976 transitions. [2022-07-12 10:23:55,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2976 transitions. [2022-07-12 10:23:55,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:55,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2976 transitions. [2022-07-12 10:23:55,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.57142857142858) internal successors, (2976), 14 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,840 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,840 INFO L186 Difference]: Start difference. First operand has 293 places, 248 transitions, 803 flow. Second operand 14 states and 2976 transitions. [2022-07-12 10:23:55,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 269 transitions, 1061 flow [2022-07-12 10:23:55,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 269 transitions, 997 flow, removed 24 selfloop flow, removed 12 redundant places. [2022-07-12 10:23:55,858 INFO L242 Difference]: Finished difference. Result has 289 places, 235 transitions, 640 flow [2022-07-12 10:23:55,858 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=640, PETRI_PLACES=289, PETRI_TRANSITIONS=235} [2022-07-12 10:23:55,859 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 60 predicate places. [2022-07-12 10:23:55,859 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 235 transitions, 640 flow [2022-07-12 10:23:55,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,859 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:55,860 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:55,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:23:55,860 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:55,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:55,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2015398089, now seen corresponding path program 1 times [2022-07-12 10:23:55,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:55,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703954629] [2022-07-12 10:23:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:55,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:55,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:55,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:55,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703954629] [2022-07-12 10:23:55,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703954629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:55,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:55,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:55,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45538472] [2022-07-12 10:23:55,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:55,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:55,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:55,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:55,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:55,979 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:55,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 235 transitions, 640 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:55,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:55,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:55,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:56,260 INFO L129 PetriNetUnfolder]: 158/1047 cut-off events. [2022-07-12 10:23:56,260 INFO L130 PetriNetUnfolder]: For 1870/1889 co-relation queries the response was YES. [2022-07-12 10:23:56,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2375 conditions, 1047 events. 158/1047 cut-off events. For 1870/1889 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5878 event pairs, 101 based on Foata normal form. 2/969 useless extension candidates. Maximal degree in co-relation 2339. Up to 307 conditions per place. [2022-07-12 10:23:56,268 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 43 selfloop transitions, 12 changer transitions 15/271 dead transitions. [2022-07-12 10:23:56,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 271 transitions, 1013 flow [2022-07-12 10:23:56,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:23:56,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:23:56,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2978 transitions. [2022-07-12 10:23:56,272 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8441043083900227 [2022-07-12 10:23:56,273 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2978 transitions. [2022-07-12 10:23:56,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2978 transitions. [2022-07-12 10:23:56,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:56,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2978 transitions. [2022-07-12 10:23:56,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.71428571428572) internal successors, (2978), 14 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:56,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:56,282 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:56,282 INFO L186 Difference]: Start difference. First operand has 289 places, 235 transitions, 640 flow. Second operand 14 states and 2978 transitions. [2022-07-12 10:23:56,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 271 transitions, 1013 flow [2022-07-12 10:23:56,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 271 transitions, 967 flow, removed 17 selfloop flow, removed 18 redundant places. [2022-07-12 10:23:56,292 INFO L242 Difference]: Finished difference. Result has 274 places, 247 transitions, 769 flow [2022-07-12 10:23:56,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=769, PETRI_PLACES=274, PETRI_TRANSITIONS=247} [2022-07-12 10:23:56,294 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 45 predicate places. [2022-07-12 10:23:56,294 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 247 transitions, 769 flow [2022-07-12 10:23:56,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:56,295 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:56,295 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:56,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:23:56,295 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:56,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:56,296 INFO L85 PathProgramCache]: Analyzing trace with hash -319056827, now seen corresponding path program 2 times [2022-07-12 10:23:56,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:56,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45041016] [2022-07-12 10:23:56,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:56,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:56,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:56,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45041016] [2022-07-12 10:23:56,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45041016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:56,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:56,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:56,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325639656] [2022-07-12 10:23:56,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:56,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:56,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:56,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:56,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:56,413 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:56,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 247 transitions, 769 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:56,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:56,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:56,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:56,712 INFO L129 PetriNetUnfolder]: 163/1080 cut-off events. [2022-07-12 10:23:56,713 INFO L130 PetriNetUnfolder]: For 2183/2210 co-relation queries the response was YES. [2022-07-12 10:23:56,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 1080 events. 163/1080 cut-off events. For 2183/2210 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6490 event pairs, 101 based on Foata normal form. 4/1007 useless extension candidates. Maximal degree in co-relation 2656. Up to 284 conditions per place. [2022-07-12 10:23:56,722 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 74 selfloop transitions, 7 changer transitions 24/306 dead transitions. [2022-07-12 10:23:56,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 306 transitions, 1347 flow [2022-07-12 10:23:56,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:23:56,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:23:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3625 transitions. [2022-07-12 10:23:56,727 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.846171802054155 [2022-07-12 10:23:56,727 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3625 transitions. [2022-07-12 10:23:56,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3625 transitions. [2022-07-12 10:23:56,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:56,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3625 transitions. [2022-07-12 10:23:56,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 213.23529411764707) internal successors, (3625), 17 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:56,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:56,738 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:56,738 INFO L186 Difference]: Start difference. First operand has 274 places, 247 transitions, 769 flow. Second operand 17 states and 3625 transitions. [2022-07-12 10:23:56,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 306 transitions, 1347 flow [2022-07-12 10:23:56,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 306 transitions, 1179 flow, removed 84 selfloop flow, removed 4 redundant places. [2022-07-12 10:23:56,755 INFO L242 Difference]: Finished difference. Result has 293 places, 248 transitions, 746 flow [2022-07-12 10:23:56,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=746, PETRI_PLACES=293, PETRI_TRANSITIONS=248} [2022-07-12 10:23:56,756 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 64 predicate places. [2022-07-12 10:23:56,756 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 248 transitions, 746 flow [2022-07-12 10:23:56,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:56,757 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:56,757 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:56,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:23:56,758 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:56,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:56,758 INFO L85 PathProgramCache]: Analyzing trace with hash 132623727, now seen corresponding path program 3 times [2022-07-12 10:23:56,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:56,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062626865] [2022-07-12 10:23:56,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:56,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:56,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:56,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:56,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062626865] [2022-07-12 10:23:56,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062626865] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:56,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:56,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:56,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910726205] [2022-07-12 10:23:56,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:56,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:56,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:56,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:56,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:56,868 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:56,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 248 transitions, 746 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:56,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:56,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:56,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:57,193 INFO L129 PetriNetUnfolder]: 171/1196 cut-off events. [2022-07-12 10:23:57,194 INFO L130 PetriNetUnfolder]: For 2890/2924 co-relation queries the response was YES. [2022-07-12 10:23:57,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 1196 events. 171/1196 cut-off events. For 2890/2924 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7323 event pairs, 105 based on Foata normal form. 3/1118 useless extension candidates. Maximal degree in co-relation 3012. Up to 279 conditions per place. [2022-07-12 10:23:57,208 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 87 selfloop transitions, 12 changer transitions 24/324 dead transitions. [2022-07-12 10:23:57,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 324 transitions, 1518 flow [2022-07-12 10:23:57,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:23:57,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:23:57,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3835 transitions. [2022-07-12 10:23:57,213 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8454585537918872 [2022-07-12 10:23:57,214 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3835 transitions. [2022-07-12 10:23:57,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3835 transitions. [2022-07-12 10:23:57,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:57,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3835 transitions. [2022-07-12 10:23:57,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 213.05555555555554) internal successors, (3835), 18 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,226 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,226 INFO L186 Difference]: Start difference. First operand has 293 places, 248 transitions, 746 flow. Second operand 18 states and 3835 transitions. [2022-07-12 10:23:57,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 324 transitions, 1518 flow [2022-07-12 10:23:57,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 324 transitions, 1444 flow, removed 34 selfloop flow, removed 12 redundant places. [2022-07-12 10:23:57,244 INFO L242 Difference]: Finished difference. Result has 302 places, 253 transitions, 855 flow [2022-07-12 10:23:57,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=855, PETRI_PLACES=302, PETRI_TRANSITIONS=253} [2022-07-12 10:23:57,245 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 73 predicate places. [2022-07-12 10:23:57,245 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 253 transitions, 855 flow [2022-07-12 10:23:57,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,246 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:57,247 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:57,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:23:57,247 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:57,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:57,247 INFO L85 PathProgramCache]: Analyzing trace with hash -714033523, now seen corresponding path program 4 times [2022-07-12 10:23:57,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:57,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521505556] [2022-07-12 10:23:57,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:57,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:57,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:57,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:57,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521505556] [2022-07-12 10:23:57,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521505556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:57,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:57,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:57,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729038107] [2022-07-12 10:23:57,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:57,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:57,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:57,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:57,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:57,359 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:57,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 253 transitions, 855 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,360 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:57,360 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:57,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:57,686 INFO L129 PetriNetUnfolder]: 169/1217 cut-off events. [2022-07-12 10:23:57,687 INFO L130 PetriNetUnfolder]: For 3704/3743 co-relation queries the response was YES. [2022-07-12 10:23:57,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3359 conditions, 1217 events. 169/1217 cut-off events. For 3704/3743 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7653 event pairs, 124 based on Foata normal form. 4/1133 useless extension candidates. Maximal degree in co-relation 3313. Up to 363 conditions per place. [2022-07-12 10:23:57,698 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 54 selfloop transitions, 10 changer transitions 20/285 dead transitions. [2022-07-12 10:23:57,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 285 transitions, 1305 flow [2022-07-12 10:23:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:23:57,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:23:57,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3398 transitions. [2022-07-12 10:23:57,703 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8427579365079365 [2022-07-12 10:23:57,703 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3398 transitions. [2022-07-12 10:23:57,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3398 transitions. [2022-07-12 10:23:57,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:57,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3398 transitions. [2022-07-12 10:23:57,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.375) internal successors, (3398), 16 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,716 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,716 INFO L186 Difference]: Start difference. First operand has 302 places, 253 transitions, 855 flow. Second operand 16 states and 3398 transitions. [2022-07-12 10:23:57,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 285 transitions, 1305 flow [2022-07-12 10:23:57,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 285 transitions, 1243 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-07-12 10:23:57,737 INFO L242 Difference]: Finished difference. Result has 308 places, 255 transitions, 898 flow [2022-07-12 10:23:57,737 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=898, PETRI_PLACES=308, PETRI_TRANSITIONS=255} [2022-07-12 10:23:57,738 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 79 predicate places. [2022-07-12 10:23:57,738 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 255 transitions, 898 flow [2022-07-12 10:23:57,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,740 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:57,740 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:57,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:23:57,743 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:57,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:57,743 INFO L85 PathProgramCache]: Analyzing trace with hash 885409187, now seen corresponding path program 5 times [2022-07-12 10:23:57,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:57,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063410368] [2022-07-12 10:23:57,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:57,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:57,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:57,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063410368] [2022-07-12 10:23:57,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063410368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:57,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:57,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:57,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059239293] [2022-07-12 10:23:57,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:57,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:57,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:57,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:57,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:57,849 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:57,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 255 transitions, 898 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:57,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:57,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:57,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:58,179 INFO L129 PetriNetUnfolder]: 167/1207 cut-off events. [2022-07-12 10:23:58,179 INFO L130 PetriNetUnfolder]: For 3332/3379 co-relation queries the response was YES. [2022-07-12 10:23:58,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 1207 events. 167/1207 cut-off events. For 3332/3379 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7505 event pairs, 110 based on Foata normal form. 3/1128 useless extension candidates. Maximal degree in co-relation 3269. Up to 329 conditions per place. [2022-07-12 10:23:58,190 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 59 selfloop transitions, 12 changer transitions 20/292 dead transitions. [2022-07-12 10:23:58,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 292 transitions, 1461 flow [2022-07-12 10:23:58,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:23:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:23:58,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3192 transitions. [2022-07-12 10:23:58,194 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-07-12 10:23:58,194 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3192 transitions. [2022-07-12 10:23:58,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3192 transitions. [2022-07-12 10:23:58,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:58,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3192 transitions. [2022-07-12 10:23:58,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.8) internal successors, (3192), 15 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,206 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,206 INFO L186 Difference]: Start difference. First operand has 308 places, 255 transitions, 898 flow. Second operand 15 states and 3192 transitions. [2022-07-12 10:23:58,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 292 transitions, 1461 flow [2022-07-12 10:23:58,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 292 transitions, 1377 flow, removed 32 selfloop flow, removed 10 redundant places. [2022-07-12 10:23:58,224 INFO L242 Difference]: Finished difference. Result has 314 places, 261 transitions, 1005 flow [2022-07-12 10:23:58,224 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1005, PETRI_PLACES=314, PETRI_TRANSITIONS=261} [2022-07-12 10:23:58,224 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 85 predicate places. [2022-07-12 10:23:58,224 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 261 transitions, 1005 flow [2022-07-12 10:23:58,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,225 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:58,225 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:58,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:23:58,225 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:58,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:58,226 INFO L85 PathProgramCache]: Analyzing trace with hash -387112815, now seen corresponding path program 6 times [2022-07-12 10:23:58,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:58,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537143255] [2022-07-12 10:23:58,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:58,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:58,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:58,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537143255] [2022-07-12 10:23:58,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537143255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:58,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:58,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:58,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065175978] [2022-07-12 10:23:58,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:58,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:58,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:58,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:58,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:58,329 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:58,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 261 transitions, 1005 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:58,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:58,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:58,641 INFO L129 PetriNetUnfolder]: 156/1172 cut-off events. [2022-07-12 10:23:58,642 INFO L130 PetriNetUnfolder]: For 3440/3481 co-relation queries the response was YES. [2022-07-12 10:23:58,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3267 conditions, 1172 events. 156/1172 cut-off events. For 3440/3481 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7186 event pairs, 122 based on Foata normal form. 4/1088 useless extension candidates. Maximal degree in co-relation 3214. Up to 363 conditions per place. [2022-07-12 10:23:58,654 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 51 selfloop transitions, 4 changer transitions 24/280 dead transitions. [2022-07-12 10:23:58,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 280 transitions, 1354 flow [2022-07-12 10:23:58,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:23:58,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:23:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2974 transitions. [2022-07-12 10:23:58,659 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8429705215419501 [2022-07-12 10:23:58,659 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2974 transitions. [2022-07-12 10:23:58,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2974 transitions. [2022-07-12 10:23:58,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:58,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2974 transitions. [2022-07-12 10:23:58,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.42857142857142) internal successors, (2974), 14 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,669 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,669 INFO L186 Difference]: Start difference. First operand has 314 places, 261 transitions, 1005 flow. Second operand 14 states and 2974 transitions. [2022-07-12 10:23:58,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 280 transitions, 1354 flow [2022-07-12 10:23:58,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 280 transitions, 1283 flow, removed 31 selfloop flow, removed 9 redundant places. [2022-07-12 10:23:58,692 INFO L242 Difference]: Finished difference. Result has 314 places, 249 transitions, 824 flow [2022-07-12 10:23:58,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=824, PETRI_PLACES=314, PETRI_TRANSITIONS=249} [2022-07-12 10:23:58,693 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 85 predicate places. [2022-07-12 10:23:58,693 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 249 transitions, 824 flow [2022-07-12 10:23:58,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,693 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:58,693 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:58,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 10:23:58,694 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:58,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:58,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1758871115, now seen corresponding path program 7 times [2022-07-12 10:23:58,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:58,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264494796] [2022-07-12 10:23:58,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:58,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:58,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:58,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:58,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264494796] [2022-07-12 10:23:58,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264494796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:58,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:58,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:58,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385038810] [2022-07-12 10:23:58,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:58,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:58,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:58,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:58,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:58,802 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:58,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 249 transitions, 824 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:58,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:58,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:58,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:59,151 INFO L129 PetriNetUnfolder]: 160/1161 cut-off events. [2022-07-12 10:23:59,153 INFO L130 PetriNetUnfolder]: For 3152/3193 co-relation queries the response was YES. [2022-07-12 10:23:59,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 1161 events. 160/1161 cut-off events. For 3152/3193 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7027 event pairs, 113 based on Foata normal form. 3/1084 useless extension candidates. Maximal degree in co-relation 3104. Up to 327 conditions per place. [2022-07-12 10:23:59,169 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 51 selfloop transitions, 16 changer transitions 18/286 dead transitions. [2022-07-12 10:23:59,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 286 transitions, 1351 flow [2022-07-12 10:23:59,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:23:59,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:23:59,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3397 transitions. [2022-07-12 10:23:59,179 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8425099206349206 [2022-07-12 10:23:59,179 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3397 transitions. [2022-07-12 10:23:59,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3397 transitions. [2022-07-12 10:23:59,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:59,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3397 transitions. [2022-07-12 10:23:59,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.3125) internal successors, (3397), 16 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:59,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:59,194 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:59,194 INFO L186 Difference]: Start difference. First operand has 314 places, 249 transitions, 824 flow. Second operand 16 states and 3397 transitions. [2022-07-12 10:23:59,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 286 transitions, 1351 flow [2022-07-12 10:23:59,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 286 transitions, 1254 flow, removed 27 selfloop flow, removed 13 redundant places. [2022-07-12 10:23:59,213 INFO L242 Difference]: Finished difference. Result has 307 places, 258 transitions, 960 flow [2022-07-12 10:23:59,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=960, PETRI_PLACES=307, PETRI_TRANSITIONS=258} [2022-07-12 10:23:59,214 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 78 predicate places. [2022-07-12 10:23:59,214 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 258 transitions, 960 flow [2022-07-12 10:23:59,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:59,214 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:59,215 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:59,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 10:23:59,215 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:59,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:59,216 INFO L85 PathProgramCache]: Analyzing trace with hash 827468711, now seen corresponding path program 8 times [2022-07-12 10:23:59,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:59,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004989943] [2022-07-12 10:23:59,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:59,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:59,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:59,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:59,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004989943] [2022-07-12 10:23:59,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004989943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:59,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:59,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:59,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711098603] [2022-07-12 10:23:59,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:59,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:59,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:59,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:59,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:59,346 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:59,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 258 transitions, 960 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:59,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:59,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:59,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:59,662 INFO L129 PetriNetUnfolder]: 156/1152 cut-off events. [2022-07-12 10:23:59,662 INFO L130 PetriNetUnfolder]: For 2624/2665 co-relation queries the response was YES. [2022-07-12 10:23:59,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3046 conditions, 1152 events. 156/1152 cut-off events. For 2624/2665 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6988 event pairs, 112 based on Foata normal form. 3/1072 useless extension candidates. Maximal degree in co-relation 2998. Up to 325 conditions per place. [2022-07-12 10:23:59,673 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 48 selfloop transitions, 17 changer transitions 18/284 dead transitions. [2022-07-12 10:23:59,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 284 transitions, 1391 flow [2022-07-12 10:23:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:23:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:23:59,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3189 transitions. [2022-07-12 10:23:59,678 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8436507936507937 [2022-07-12 10:23:59,678 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3189 transitions. [2022-07-12 10:23:59,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3189 transitions. [2022-07-12 10:23:59,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:59,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3189 transitions. [2022-07-12 10:23:59,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.6) internal successors, (3189), 15 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:59,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:59,699 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:59,699 INFO L186 Difference]: Start difference. First operand has 307 places, 258 transitions, 960 flow. Second operand 15 states and 3189 transitions. [2022-07-12 10:23:59,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 284 transitions, 1391 flow [2022-07-12 10:23:59,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 284 transitions, 1343 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-07-12 10:23:59,719 INFO L242 Difference]: Finished difference. Result has 317 places, 261 transitions, 1044 flow [2022-07-12 10:23:59,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1044, PETRI_PLACES=317, PETRI_TRANSITIONS=261} [2022-07-12 10:23:59,719 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 88 predicate places. [2022-07-12 10:23:59,719 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 261 transitions, 1044 flow [2022-07-12 10:23:59,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:59,720 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:59,720 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:59,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 10:23:59,721 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:59,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:59,721 INFO L85 PathProgramCache]: Analyzing trace with hash -985639963, now seen corresponding path program 9 times [2022-07-12 10:23:59,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:59,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7911915] [2022-07-12 10:23:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:59,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:59,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:59,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:59,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7911915] [2022-07-12 10:23:59,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7911915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:59,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:59,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:23:59,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418429247] [2022-07-12 10:23:59,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:59,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:23:59,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:59,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:23:59,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:23:59,821 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:23:59,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 261 transitions, 1044 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:23:59,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:59,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:23:59,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:00,161 INFO L129 PetriNetUnfolder]: 153/1143 cut-off events. [2022-07-12 10:24:00,162 INFO L130 PetriNetUnfolder]: For 2797/2838 co-relation queries the response was YES. [2022-07-12 10:24:00,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3049 conditions, 1143 events. 153/1143 cut-off events. For 2797/2838 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6900 event pairs, 111 based on Foata normal form. 3/1065 useless extension candidates. Maximal degree in co-relation 2996. Up to 324 conditions per place. [2022-07-12 10:24:00,170 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 52 selfloop transitions, 8 changer transitions 23/284 dead transitions. [2022-07-12 10:24:00,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 284 transitions, 1375 flow [2022-07-12 10:24:00,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:24:00,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:24:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2768 transitions. [2022-07-12 10:24:00,174 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8449328449328449 [2022-07-12 10:24:00,174 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2768 transitions. [2022-07-12 10:24:00,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2768 transitions. [2022-07-12 10:24:00,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:00,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2768 transitions. [2022-07-12 10:24:00,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 212.92307692307693) internal successors, (2768), 13 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,181 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,181 INFO L186 Difference]: Start difference. First operand has 317 places, 261 transitions, 1044 flow. Second operand 13 states and 2768 transitions. [2022-07-12 10:24:00,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 284 transitions, 1375 flow [2022-07-12 10:24:00,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 284 transitions, 1303 flow, removed 23 selfloop flow, removed 7 redundant places. [2022-07-12 10:24:00,200 INFO L242 Difference]: Finished difference. Result has 320 places, 253 transitions, 892 flow [2022-07-12 10:24:00,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=892, PETRI_PLACES=320, PETRI_TRANSITIONS=253} [2022-07-12 10:24:00,200 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 91 predicate places. [2022-07-12 10:24:00,201 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 253 transitions, 892 flow [2022-07-12 10:24:00,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,201 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:00,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:00,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 10:24:00,202 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 10:24:00,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:00,202 INFO L85 PathProgramCache]: Analyzing trace with hash 951573327, now seen corresponding path program 10 times [2022-07-12 10:24:00,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:00,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973282905] [2022-07-12 10:24:00,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:00,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:00,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:00,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973282905] [2022-07-12 10:24:00,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973282905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:00,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:00,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:24:00,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359582415] [2022-07-12 10:24:00,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:00,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:24:00,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:00,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:24:00,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:24:00,306 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-12 10:24:00,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 253 transitions, 892 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:00,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-12 10:24:00,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:00,609 INFO L129 PetriNetUnfolder]: 145/1075 cut-off events. [2022-07-12 10:24:00,609 INFO L130 PetriNetUnfolder]: For 2514/2555 co-relation queries the response was YES. [2022-07-12 10:24:00,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2801 conditions, 1075 events. 145/1075 cut-off events. For 2514/2555 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6225 event pairs, 109 based on Foata normal form. 3/997 useless extension candidates. Maximal degree in co-relation 2748. Up to 305 conditions per place. [2022-07-12 10:24:00,619 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 43 selfloop transitions, 2 changer transitions 26/270 dead transitions. [2022-07-12 10:24:00,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 270 transitions, 1155 flow [2022-07-12 10:24:00,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:24:00,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:24:00,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2974 transitions. [2022-07-12 10:24:00,622 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8429705215419501 [2022-07-12 10:24:00,622 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2974 transitions. [2022-07-12 10:24:00,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2974 transitions. [2022-07-12 10:24:00,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:00,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2974 transitions. [2022-07-12 10:24:00,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.42857142857142) internal successors, (2974), 14 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,629 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,629 INFO L186 Difference]: Start difference. First operand has 320 places, 253 transitions, 892 flow. Second operand 14 states and 2974 transitions. [2022-07-12 10:24:00,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 270 transitions, 1155 flow [2022-07-12 10:24:00,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 270 transitions, 1087 flow, removed 16 selfloop flow, removed 14 redundant places. [2022-07-12 10:24:00,647 INFO L242 Difference]: Finished difference. Result has 311 places, 240 transitions, 714 flow [2022-07-12 10:24:00,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=714, PETRI_PLACES=311, PETRI_TRANSITIONS=240} [2022-07-12 10:24:00,648 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 82 predicate places. [2022-07-12 10:24:00,648 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 240 transitions, 714 flow [2022-07-12 10:24:00,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,648 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:00,648 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:00,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 10:24:00,649 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 10:24:00,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:00,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1243438433, now seen corresponding path program 1 times [2022-07-12 10:24:00,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:00,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492559934] [2022-07-12 10:24:00,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:00,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:00,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:00,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492559934] [2022-07-12 10:24:00,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492559934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:00,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:00,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:24:00,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955795626] [2022-07-12 10:24:00,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:00,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:24:00,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:00,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:24:00,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:24:00,683 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-07-12 10:24:00,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 240 transitions, 714 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:00,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-07-12 10:24:00,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:00,786 INFO L129 PetriNetUnfolder]: 42/597 cut-off events. [2022-07-12 10:24:00,786 INFO L130 PetriNetUnfolder]: For 837/861 co-relation queries the response was YES. [2022-07-12 10:24:00,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 597 events. 42/597 cut-off events. For 837/861 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2501 event pairs, 22 based on Foata normal form. 3/568 useless extension candidates. Maximal degree in co-relation 1177. Up to 41 conditions per place. [2022-07-12 10:24:00,791 INFO L132 encePairwiseOnDemand]: 247/252 looper letters, 16 selfloop transitions, 2 changer transitions 12/246 dead transitions. [2022-07-12 10:24:00,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 246 transitions, 783 flow [2022-07-12 10:24:00,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:24:00,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:24:00,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2022-07-12 10:24:00,793 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2022-07-12 10:24:00,793 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2022-07-12 10:24:00,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2022-07-12 10:24:00,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:00,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2022-07-12 10:24:00,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,795 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,795 INFO L186 Difference]: Start difference. First operand has 311 places, 240 transitions, 714 flow. Second operand 3 states and 696 transitions. [2022-07-12 10:24:00,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 246 transitions, 783 flow [2022-07-12 10:24:00,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 246 transitions, 707 flow, removed 31 selfloop flow, removed 22 redundant places. [2022-07-12 10:24:00,804 INFO L242 Difference]: Finished difference. Result has 273 places, 232 transitions, 602 flow [2022-07-12 10:24:00,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=602, PETRI_PLACES=273, PETRI_TRANSITIONS=232} [2022-07-12 10:24:00,805 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 44 predicate places. [2022-07-12 10:24:00,805 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 232 transitions, 602 flow [2022-07-12 10:24:00,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,805 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:00,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:00,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 10:24:00,807 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 10:24:00,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:00,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1851538177, now seen corresponding path program 1 times [2022-07-12 10:24:00,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:00,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361759943] [2022-07-12 10:24:00,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:00,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:00,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:00,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361759943] [2022-07-12 10:24:00,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361759943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:00,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:00,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:24:00,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121612460] [2022-07-12 10:24:00,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:00,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:24:00,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:00,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:24:00,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:24:00,849 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-07-12 10:24:00,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 232 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:00,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-07-12 10:24:00,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:00,901 INFO L129 PetriNetUnfolder]: 25/348 cut-off events. [2022-07-12 10:24:00,901 INFO L130 PetriNetUnfolder]: For 194/195 co-relation queries the response was YES. [2022-07-12 10:24:00,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 348 events. 25/348 cut-off events. For 194/195 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 838 event pairs, 7 based on Foata normal form. 4/329 useless extension candidates. Maximal degree in co-relation 558. Up to 22 conditions per place. [2022-07-12 10:24:00,904 INFO L132 encePairwiseOnDemand]: 248/252 looper letters, 16 selfloop transitions, 2 changer transitions 11/236 dead transitions. [2022-07-12 10:24:00,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 236 transitions, 659 flow [2022-07-12 10:24:00,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:24:00,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:24:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2022-07-12 10:24:00,906 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2022-07-12 10:24:00,906 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2022-07-12 10:24:00,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2022-07-12 10:24:00,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:00,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2022-07-12 10:24:00,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,908 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,908 INFO L186 Difference]: Start difference. First operand has 273 places, 232 transitions, 602 flow. Second operand 3 states and 693 transitions. [2022-07-12 10:24:00,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 236 transitions, 659 flow [2022-07-12 10:24:00,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 236 transitions, 609 flow, removed 24 selfloop flow, removed 11 redundant places. [2022-07-12 10:24:00,913 INFO L242 Difference]: Finished difference. Result has 253 places, 223 transitions, 508 flow [2022-07-12 10:24:00,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=253, PETRI_TRANSITIONS=223} [2022-07-12 10:24:00,913 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 24 predicate places. [2022-07-12 10:24:00,913 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 223 transitions, 508 flow [2022-07-12 10:24:00,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:00,914 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:00,914 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:00,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 10:24:00,914 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 10:24:00,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:00,914 INFO L85 PathProgramCache]: Analyzing trace with hash -643342495, now seen corresponding path program 1 times [2022-07-12 10:24:00,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:00,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619422965] [2022-07-12 10:24:00,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:00,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:01,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:01,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619422965] [2022-07-12 10:24:01,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619422965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:01,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:01,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-12 10:24:01,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834660130] [2022-07-12 10:24:01,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:01,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 10:24:01,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:01,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 10:24:01,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-12 10:24:01,269 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-12 10:24:01,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 223 transitions, 508 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:01,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:01,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-12 10:24:01,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:04,678 INFO L129 PetriNetUnfolder]: 958/4403 cut-off events. [2022-07-12 10:24:04,679 INFO L130 PetriNetUnfolder]: For 603/609 co-relation queries the response was YES. [2022-07-12 10:24:04,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7289 conditions, 4403 events. 958/4403 cut-off events. For 603/609 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 35203 event pairs, 88 based on Foata normal form. 0/4115 useless extension candidates. Maximal degree in co-relation 7268. Up to 291 conditions per place. [2022-07-12 10:24:04,703 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 569 selfloop transitions, 68 changer transitions 0/792 dead transitions. [2022-07-12 10:24:04,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 792 transitions, 2960 flow [2022-07-12 10:24:04,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-12 10:24:04,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-07-12 10:24:04,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 9755 transitions. [2022-07-12 10:24:04,714 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7303833483078767 [2022-07-12 10:24:04,714 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 9755 transitions. [2022-07-12 10:24:04,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 9755 transitions. [2022-07-12 10:24:04,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:04,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 9755 transitions. [2022-07-12 10:24:04,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 184.0566037735849) internal successors, (9755), 53 states have internal predecessors, (9755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:04,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:04,781 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:04,782 INFO L186 Difference]: Start difference. First operand has 253 places, 223 transitions, 508 flow. Second operand 53 states and 9755 transitions. [2022-07-12 10:24:04,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 792 transitions, 2960 flow [2022-07-12 10:24:04,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 792 transitions, 2938 flow, removed 11 selfloop flow, removed 7 redundant places. [2022-07-12 10:24:04,802 INFO L242 Difference]: Finished difference. Result has 303 places, 274 transitions, 796 flow [2022-07-12 10:24:04,802 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=796, PETRI_PLACES=303, PETRI_TRANSITIONS=274} [2022-07-12 10:24:04,802 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 74 predicate places. [2022-07-12 10:24:04,802 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 274 transitions, 796 flow [2022-07-12 10:24:04,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:04,803 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:04,804 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:04,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 10:24:04,804 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 10:24:04,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:04,804 INFO L85 PathProgramCache]: Analyzing trace with hash 214875707, now seen corresponding path program 2 times [2022-07-12 10:24:04,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:04,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642876928] [2022-07-12 10:24:04,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:04,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:05,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:05,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642876928] [2022-07-12 10:24:05,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642876928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:05,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:05,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-12 10:24:05,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195809575] [2022-07-12 10:24:05,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:05,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 10:24:05,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:05,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 10:24:05,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-12 10:24:05,190 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-12 10:24:05,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 274 transitions, 796 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:05,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:05,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-12 10:24:05,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:08,592 INFO L129 PetriNetUnfolder]: 1507/7402 cut-off events. [2022-07-12 10:24:08,592 INFO L130 PetriNetUnfolder]: For 1886/1907 co-relation queries the response was YES. [2022-07-12 10:24:08,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13539 conditions, 7402 events. 1507/7402 cut-off events. For 1886/1907 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 68144 event pairs, 597 based on Foata normal form. 1/7080 useless extension candidates. Maximal degree in co-relation 13507. Up to 1160 conditions per place. [2022-07-12 10:24:08,642 INFO L132 encePairwiseOnDemand]: 214/252 looper letters, 463 selfloop transitions, 87 changer transitions 0/705 dead transitions. [2022-07-12 10:24:08,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 705 transitions, 3338 flow [2022-07-12 10:24:08,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-12 10:24:08,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-12 10:24:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 8041 transitions. [2022-07-12 10:24:08,650 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7251984126984127 [2022-07-12 10:24:08,650 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 8041 transitions. [2022-07-12 10:24:08,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 8041 transitions. [2022-07-12 10:24:08,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:08,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 8041 transitions. [2022-07-12 10:24:08,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 182.75) internal successors, (8041), 44 states have internal predecessors, (8041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:08,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 252.0) internal successors, (11340), 45 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:08,671 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 252.0) internal successors, (11340), 45 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:08,671 INFO L186 Difference]: Start difference. First operand has 303 places, 274 transitions, 796 flow. Second operand 44 states and 8041 transitions. [2022-07-12 10:24:08,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 705 transitions, 3338 flow [2022-07-12 10:24:08,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 705 transitions, 3142 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-07-12 10:24:08,690 INFO L242 Difference]: Finished difference. Result has 376 places, 357 transitions, 1468 flow [2022-07-12 10:24:08,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1468, PETRI_PLACES=376, PETRI_TRANSITIONS=357} [2022-07-12 10:24:08,691 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 147 predicate places. [2022-07-12 10:24:08,692 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 357 transitions, 1468 flow [2022-07-12 10:24:08,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:08,692 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:08,693 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:08,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 10:24:08,693 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 10:24:08,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:08,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1848306263, now seen corresponding path program 3 times [2022-07-12 10:24:08,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:08,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919261692] [2022-07-12 10:24:08,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:08,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:09,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:09,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:09,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919261692] [2022-07-12 10:24:09,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919261692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:09,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:09,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-12 10:24:09,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995859884] [2022-07-12 10:24:09,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:09,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 10:24:09,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:09,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 10:24:09,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-12 10:24:09,200 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-12 10:24:09,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 357 transitions, 1468 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:09,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:09,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-12 10:24:09,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:15,468 INFO L129 PetriNetUnfolder]: 2948/15266 cut-off events. [2022-07-12 10:24:15,469 INFO L130 PetriNetUnfolder]: For 12842/12914 co-relation queries the response was YES. [2022-07-12 10:24:15,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31539 conditions, 15266 events. 2948/15266 cut-off events. For 12842/12914 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 172941 event pairs, 993 based on Foata normal form. 9/14713 useless extension candidates. Maximal degree in co-relation 31467. Up to 1763 conditions per place. [2022-07-12 10:24:15,662 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 758 selfloop transitions, 143 changer transitions 0/1056 dead transitions. [2022-07-12 10:24:15,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 1056 transitions, 6357 flow [2022-07-12 10:24:15,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-07-12 10:24:15,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-07-12 10:24:15,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 11772 transitions. [2022-07-12 10:24:15,671 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7299107142857143 [2022-07-12 10:24:15,671 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 11772 transitions. [2022-07-12 10:24:15,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 11772 transitions. [2022-07-12 10:24:15,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:15,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 11772 transitions. [2022-07-12 10:24:15,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 183.9375) internal successors, (11772), 64 states have internal predecessors, (11772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:15,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 252.0) internal successors, (16380), 65 states have internal predecessors, (16380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:15,697 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 252.0) internal successors, (16380), 65 states have internal predecessors, (16380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:15,697 INFO L186 Difference]: Start difference. First operand has 376 places, 357 transitions, 1468 flow. Second operand 64 states and 11772 transitions. [2022-07-12 10:24:15,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 1056 transitions, 6357 flow [2022-07-12 10:24:15,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 1056 transitions, 6313 flow, removed 22 selfloop flow, removed 0 redundant places. [2022-07-12 10:24:15,789 INFO L242 Difference]: Finished difference. Result has 491 places, 481 transitions, 2723 flow [2022-07-12 10:24:15,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=2723, PETRI_PLACES=491, PETRI_TRANSITIONS=481} [2022-07-12 10:24:15,790 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 262 predicate places. [2022-07-12 10:24:15,790 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 481 transitions, 2723 flow [2022-07-12 10:24:15,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:15,791 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:15,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:15,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 10:24:15,791 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 10:24:15,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:15,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1038615649, now seen corresponding path program 4 times [2022-07-12 10:24:15,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:15,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059097923] [2022-07-12 10:24:15,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:15,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:16,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:16,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059097923] [2022-07-12 10:24:16,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059097923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:16,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:16,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-12 10:24:16,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530067054] [2022-07-12 10:24:16,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:16,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 10:24:16,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:16,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 10:24:16,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-12 10:24:16,160 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-12 10:24:16,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 481 transitions, 2723 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:16,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:16,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-12 10:24:16,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:24,574 INFO L129 PetriNetUnfolder]: 3745/19931 cut-off events. [2022-07-12 10:24:24,575 INFO L130 PetriNetUnfolder]: For 34125/34257 co-relation queries the response was YES. [2022-07-12 10:24:24,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46270 conditions, 19931 events. 3745/19931 cut-off events. For 34125/34257 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 241983 event pairs, 774 based on Foata normal form. 29/19251 useless extension candidates. Maximal degree in co-relation 46145. Up to 2766 conditions per place. [2022-07-12 10:24:24,848 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 869 selfloop transitions, 244 changer transitions 0/1268 dead transitions. [2022-07-12 10:24:24,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 1268 transitions, 10110 flow [2022-07-12 10:24:24,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-07-12 10:24:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2022-07-12 10:24:24,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 14398 transitions. [2022-07-12 10:24:24,955 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.723226843480008 [2022-07-12 10:24:24,955 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 14398 transitions. [2022-07-12 10:24:24,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 14398 transitions. [2022-07-12 10:24:24,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:24,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 14398 transitions. [2022-07-12 10:24:24,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 182.25316455696202) internal successors, (14398), 79 states have internal predecessors, (14398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:24,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 252.0) internal successors, (20160), 80 states have internal predecessors, (20160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:24,993 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 252.0) internal successors, (20160), 80 states have internal predecessors, (20160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:24,993 INFO L186 Difference]: Start difference. First operand has 491 places, 481 transitions, 2723 flow. Second operand 79 states and 14398 transitions. [2022-07-12 10:24:24,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 1268 transitions, 10110 flow [2022-07-12 10:24:25,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 1268 transitions, 9594 flow, removed 258 selfloop flow, removed 0 redundant places. [2022-07-12 10:24:25,326 INFO L242 Difference]: Finished difference. Result has 632 places, 602 transitions, 4198 flow [2022-07-12 10:24:25,327 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=2409, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=4198, PETRI_PLACES=632, PETRI_TRANSITIONS=602} [2022-07-12 10:24:25,332 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 403 predicate places. [2022-07-12 10:24:25,332 INFO L495 AbstractCegarLoop]: Abstraction has has 632 places, 602 transitions, 4198 flow [2022-07-12 10:24:25,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:25,333 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:25,333 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:25,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 10:24:25,335 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 10:24:25,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:25,336 INFO L85 PathProgramCache]: Analyzing trace with hash 249018489, now seen corresponding path program 5 times [2022-07-12 10:24:25,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:25,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226465401] [2022-07-12 10:24:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:25,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:25,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:25,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226465401] [2022-07-12 10:24:25,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226465401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:25,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:25,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-12 10:24:25,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501213556] [2022-07-12 10:24:25,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:25,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 10:24:25,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 10:24:25,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-12 10:24:25,728 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-12 10:24:25,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 602 transitions, 4198 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:25,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:25,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-12 10:24:25,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:34,985 INFO L129 PetriNetUnfolder]: 3898/22825 cut-off events. [2022-07-12 10:24:34,985 INFO L130 PetriNetUnfolder]: For 56782/56953 co-relation queries the response was YES. [2022-07-12 10:24:35,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55280 conditions, 22825 events. 3898/22825 cut-off events. For 56782/56953 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 284993 event pairs, 725 based on Foata normal form. 29/22155 useless extension candidates. Maximal degree in co-relation 55091. Up to 2581 conditions per place. [2022-07-12 10:24:35,409 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 914 selfloop transitions, 288 changer transitions 0/1357 dead transitions. [2022-07-12 10:24:35,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 1357 transitions, 12752 flow [2022-07-12 10:24:35,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-12 10:24:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-07-12 10:24:35,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 9761 transitions. [2022-07-12 10:24:35,419 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7308325846061695 [2022-07-12 10:24:35,419 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 9761 transitions. [2022-07-12 10:24:35,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 9761 transitions. [2022-07-12 10:24:35,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:35,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 9761 transitions. [2022-07-12 10:24:35,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 184.16981132075472) internal successors, (9761), 53 states have internal predecessors, (9761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:35,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:35,443 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:35,443 INFO L186 Difference]: Start difference. First operand has 632 places, 602 transitions, 4198 flow. Second operand 53 states and 9761 transitions. [2022-07-12 10:24:35,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 1357 transitions, 12752 flow [2022-07-12 10:24:35,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 1357 transitions, 11282 flow, removed 283 selfloop flow, removed 11 redundant places. [2022-07-12 10:24:35,900 INFO L242 Difference]: Finished difference. Result has 693 places, 625 transitions, 4451 flow [2022-07-12 10:24:35,901 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=4451, PETRI_PLACES=693, PETRI_TRANSITIONS=625} [2022-07-12 10:24:35,902 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 464 predicate places. [2022-07-12 10:24:35,902 INFO L495 AbstractCegarLoop]: Abstraction has has 693 places, 625 transitions, 4451 flow [2022-07-12 10:24:35,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:35,903 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:35,907 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:35,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 10:24:35,907 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 10:24:35,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:35,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1852996547, now seen corresponding path program 6 times [2022-07-12 10:24:35,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:35,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584710341] [2022-07-12 10:24:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:35,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:36,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:36,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584710341] [2022-07-12 10:24:36,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584710341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:36,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:36,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-12 10:24:36,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111534425] [2022-07-12 10:24:36,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:36,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 10:24:36,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:36,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 10:24:36,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-12 10:24:36,326 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-12 10:24:36,329 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 625 transitions, 4451 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:36,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:36,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-12 10:24:36,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:46,179 INFO L129 PetriNetUnfolder]: 4330/24467 cut-off events. [2022-07-12 10:24:46,179 INFO L130 PetriNetUnfolder]: For 76056/76226 co-relation queries the response was YES. [2022-07-12 10:24:46,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62513 conditions, 24467 events. 4330/24467 cut-off events. For 76056/76226 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 308246 event pairs, 2555 based on Foata normal form. 25/23615 useless extension candidates. Maximal degree in co-relation 62304. Up to 4853 conditions per place. [2022-07-12 10:24:46,631 INFO L132 encePairwiseOnDemand]: 214/252 looper letters, 788 selfloop transitions, 133 changer transitions 0/1076 dead transitions. [2022-07-12 10:24:46,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 735 places, 1076 transitions, 10622 flow [2022-07-12 10:24:46,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-12 10:24:46,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-07-12 10:24:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 7843 transitions. [2022-07-12 10:24:46,638 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7237910668143226 [2022-07-12 10:24:46,638 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 7843 transitions. [2022-07-12 10:24:46,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 7843 transitions. [2022-07-12 10:24:46,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:46,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 7843 transitions. [2022-07-12 10:24:46,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 182.3953488372093) internal successors, (7843), 43 states have internal predecessors, (7843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:46,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 252.0) internal successors, (11088), 44 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 10:24:46,653 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 252.0) internal successors, (11088), 44 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 10:24:46,653 INFO L186 Difference]: Start difference. First operand has 693 places, 625 transitions, 4451 flow. Second operand 43 states and 7843 transitions. [2022-07-12 10:24:46,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 735 places, 1076 transitions, 10622 flow [2022-07-12 10:24:47,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 703 places, 1076 transitions, 9683 flow, removed 85 selfloop flow, removed 32 redundant places. [2022-07-12 10:24:47,144 INFO L242 Difference]: Finished difference. Result has 739 places, 707 transitions, 5075 flow [2022-07-12 10:24:47,145 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=3819, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=5075, PETRI_PLACES=739, PETRI_TRANSITIONS=707} [2022-07-12 10:24:47,145 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 510 predicate places. [2022-07-12 10:24:47,145 INFO L495 AbstractCegarLoop]: Abstraction has has 739 places, 707 transitions, 5075 flow [2022-07-12 10:24:47,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:47,146 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:47,146 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:47,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 10:24:47,147 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 10:24:47,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:47,147 INFO L85 PathProgramCache]: Analyzing trace with hash -623103677, now seen corresponding path program 7 times [2022-07-12 10:24:47,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:47,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851736] [2022-07-12 10:24:47,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:47,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:47,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:47,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851736] [2022-07-12 10:24:47,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:47,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:47,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-12 10:24:47,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022194923] [2022-07-12 10:24:47,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:47,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 10:24:47,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:47,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 10:24:47,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-12 10:24:47,489 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-12 10:24:47,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 739 places, 707 transitions, 5075 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:24:47,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:47,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-12 10:24:47,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand