./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-chromosome-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 c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:25:03,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:25:03,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:25:03,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:25:03,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:25:03,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:25:03,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:25:03,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:25:03,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:25:03,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:25:03,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:25:03,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:25:03,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:25:03,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:25:03,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:25:03,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:25:03,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:25:03,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:25:03,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:25:03,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:25:03,554 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:25:03,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:25:03,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:25:03,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:25:03,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:25:03,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:25:03,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:25:03,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:25:03,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:25:03,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:25:03,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:25:03,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:25:03,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:25:03,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:25:03,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:25:03,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:25:03,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:25:03,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:25:03,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:25:03,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:25:03,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:25:03,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:25:03,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:25:03,597 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:25:03,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:25:03,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:25:03,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:25:03,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:25:03,598 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:25:03,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:25:03,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:25:03,599 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:25:03,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:25:03,600 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:25:03,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:25:03,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:25:03,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:25:03,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:25:03,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:25:03,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:25:03,601 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:25:03,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:25:03,601 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:25:03,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:25:03,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:25:03,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:25:03,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:25:03,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:03,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:25:03,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:25:03,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:25:03,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:25:03,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:25:03,604 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:25:03,604 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:25:03,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:25:03,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f [2022-07-19 21:25:03,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:25:03,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:25:03,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:25:03,841 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:25:03,842 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:25:03,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-07-19 21:25:03,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d6433999/6bcbd923793c4b0aa2bcc44ffd768b6a/FLAG4416e23f3 [2022-07-19 21:25:04,249 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:25:04,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-07-19 21:25:04,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d6433999/6bcbd923793c4b0aa2bcc44ffd768b6a/FLAG4416e23f3 [2022-07-19 21:25:04,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d6433999/6bcbd923793c4b0aa2bcc44ffd768b6a [2022-07-19 21:25:04,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:25:04,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:25:04,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:04,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:25:04,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:25:04,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:04" (1/1) ... [2022-07-19 21:25:04,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@502ebdbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:04, skipping insertion in model container [2022-07-19 21:25:04,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:04" (1/1) ... [2022-07-19 21:25:04,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:25:04,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:25:04,484 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-chromosome-symm.wvr.c[2695,2708] [2022-07-19 21:25:04,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:04,505 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:25:04,533 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-chromosome-symm.wvr.c[2695,2708] [2022-07-19 21:25:04,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:04,550 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:25:04,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:04 WrapperNode [2022-07-19 21:25:04,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:04,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:04,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:25:04,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:25:04,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:04" (1/1) ... [2022-07-19 21:25:04,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:04" (1/1) ... [2022-07-19 21:25:04,597 INFO L137 Inliner]: procedures = 25, calls = 37, calls flagged for inlining = 15, calls inlined = 19, statements flattened = 202 [2022-07-19 21:25:04,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:04,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:25:04,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:25:04,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:25:04,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:04" (1/1) ... [2022-07-19 21:25:04,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:04" (1/1) ... [2022-07-19 21:25:04,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:04" (1/1) ... [2022-07-19 21:25:04,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:04" (1/1) ... [2022-07-19 21:25:04,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:04" (1/1) ... [2022-07-19 21:25:04,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:04" (1/1) ... [2022-07-19 21:25:04,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:04" (1/1) ... [2022-07-19 21:25:04,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:25:04,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:25:04,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:25:04,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:25:04,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:04" (1/1) ... [2022-07-19 21:25:04,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:04,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:04,682 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:25:04,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:25:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:25:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:25:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:25:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:25:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:25:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:25:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:25:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:25:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:25:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:25:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:25:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:25:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:25:04,734 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:25:04,790 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:25:04,791 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:25:05,045 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:25:05,053 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:25:05,053 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 21:25:05,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:05 BoogieIcfgContainer [2022-07-19 21:25:05,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:25:05,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:25:05,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:25:05,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:25:05,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:25:04" (1/3) ... [2022-07-19 21:25:05,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c7fa20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:25:05, skipping insertion in model container [2022-07-19 21:25:05,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:04" (2/3) ... [2022-07-19 21:25:05,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c7fa20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:25:05, skipping insertion in model container [2022-07-19 21:25:05,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:05" (3/3) ... [2022-07-19 21:25:05,061 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2022-07-19 21:25:05,064 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:25:05,070 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:25:05,071 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:25:05,071 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:25:05,137 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-19 21:25:05,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 256 places, 272 transitions, 560 flow [2022-07-19 21:25:05,260 INFO L129 PetriNetUnfolder]: 23/270 cut-off events. [2022-07-19 21:25:05,261 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:25:05,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 270 events. 23/270 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 327 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 171. Up to 2 conditions per place. [2022-07-19 21:25:05,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 272 transitions, 560 flow [2022-07-19 21:25:05,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 261 transitions, 534 flow [2022-07-19 21:25:05,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:25:05,282 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@161146ca, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7ae08979 [2022-07-19 21:25:05,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:25:05,313 INFO L129 PetriNetUnfolder]: 23/260 cut-off events. [2022-07-19 21:25:05,313 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:25:05,313 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:05,314 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] [2022-07-19 21:25:05,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:05,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:05,326 INFO L85 PathProgramCache]: Analyzing trace with hash 63985711, now seen corresponding path program 1 times [2022-07-19 21:25:05,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:05,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595216155] [2022-07-19 21:25:05,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:05,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:05,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:05,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595216155] [2022-07-19 21:25:05,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595216155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:05,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:05,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:25:05,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276631918] [2022-07-19 21:25:05,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:05,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 21:25:05,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:05,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 21:25:05,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 21:25:05,500 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 272 [2022-07-19 21:25:05,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 261 transitions, 534 flow. Second operand has 2 states, 2 states have (on average 252.5) internal successors, (505), 2 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:05,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:05,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 272 [2022-07-19 21:25:05,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:05,549 INFO L129 PetriNetUnfolder]: 6/244 cut-off events. [2022-07-19 21:25:05,554 INFO L130 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-07-19 21:25:05,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 244 events. 6/244 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 308 event pairs, 0 based on Foata normal form. 20/245 useless extension candidates. Maximal degree in co-relation 162. Up to 5 conditions per place. [2022-07-19 21:25:05,557 INFO L132 encePairwiseOnDemand]: 255/272 looper letters, 4 selfloop transitions, 0 changer transitions 7/244 dead transitions. [2022-07-19 21:25:05,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 244 transitions, 508 flow [2022-07-19 21:25:05,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 21:25:05,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-19 21:25:05,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 521 transitions. [2022-07-19 21:25:05,568 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9577205882352942 [2022-07-19 21:25:05,569 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 521 transitions. [2022-07-19 21:25:05,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 521 transitions. [2022-07-19 21:25:05,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:05,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 521 transitions. [2022-07-19 21:25:05,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 260.5) internal successors, (521), 2 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:05,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:05,582 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:05,584 INFO L186 Difference]: Start difference. First operand has 245 places, 261 transitions, 534 flow. Second operand 2 states and 521 transitions. [2022-07-19 21:25:05,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 244 transitions, 508 flow [2022-07-19 21:25:05,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 244 transitions, 500 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:25:05,615 INFO L242 Difference]: Finished difference. Result has 242 places, 237 transitions, 478 flow [2022-07-19 21:25:05,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=478, PETRI_PLACES=242, PETRI_TRANSITIONS=237} [2022-07-19 21:25:05,621 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, -3 predicate places. [2022-07-19 21:25:05,621 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 237 transitions, 478 flow [2022-07-19 21:25:05,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 252.5) internal successors, (505), 2 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:05,623 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:05,623 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:05,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:25:05,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:05,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:05,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1774321134, now seen corresponding path program 1 times [2022-07-19 21:25:05,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:05,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91404715] [2022-07-19 21:25:05,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:05,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:05,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:05,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:05,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91404715] [2022-07-19 21:25:05,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91404715] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:05,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:05,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:25:05,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578781190] [2022-07-19 21:25:05,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:05,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:25:05,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:05,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:25:05,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:25:05,810 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 272 [2022-07-19 21:25:05,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 237 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:05,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:05,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 272 [2022-07-19 21:25:05,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:05,945 INFO L129 PetriNetUnfolder]: 32/666 cut-off events. [2022-07-19 21:25:05,946 INFO L130 PetriNetUnfolder]: For 6/21 co-relation queries the response was YES. [2022-07-19 21:25:05,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 666 events. 32/666 cut-off events. For 6/21 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2709 event pairs, 9 based on Foata normal form. 2/625 useless extension candidates. Maximal degree in co-relation 750. Up to 34 conditions per place. [2022-07-19 21:25:05,952 INFO L132 encePairwiseOnDemand]: 267/272 looper letters, 26 selfloop transitions, 4 changer transitions 0/252 dead transitions. [2022-07-19 21:25:05,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 252 transitions, 575 flow [2022-07-19 21:25:05,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:25:05,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:25:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1226 transitions. [2022-07-19 21:25:05,956 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9014705882352941 [2022-07-19 21:25:05,956 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1226 transitions. [2022-07-19 21:25:05,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1226 transitions. [2022-07-19 21:25:05,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:05,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1226 transitions. [2022-07-19 21:25:05,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 245.2) internal successors, (1226), 5 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:05,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:05,963 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:05,963 INFO L186 Difference]: Start difference. First operand has 242 places, 237 transitions, 478 flow. Second operand 5 states and 1226 transitions. [2022-07-19 21:25:05,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 252 transitions, 575 flow [2022-07-19 21:25:05,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 252 transitions, 575 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:25:05,973 INFO L242 Difference]: Finished difference. Result has 242 places, 240 transitions, 507 flow [2022-07-19 21:25:05,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=507, PETRI_PLACES=242, PETRI_TRANSITIONS=240} [2022-07-19 21:25:05,974 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, -3 predicate places. [2022-07-19 21:25:05,975 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 240 transitions, 507 flow [2022-07-19 21:25:05,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:05,975 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:05,976 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:05,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:25:05,977 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:05,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:05,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2002820622, now seen corresponding path program 1 times [2022-07-19 21:25:05,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:05,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527520703] [2022-07-19 21:25:05,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:05,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:06,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:06,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527520703] [2022-07-19 21:25:06,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527520703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:06,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:06,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:25:06,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998663464] [2022-07-19 21:25:06,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:06,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:25:06,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:06,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:25:06,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:25:06,137 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 272 [2022-07-19 21:25:06,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 240 transitions, 507 flow. Second operand has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:06,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:06,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 272 [2022-07-19 21:25:06,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:06,234 INFO L129 PetriNetUnfolder]: 5/342 cut-off events. [2022-07-19 21:25:06,235 INFO L130 PetriNetUnfolder]: For 8/11 co-relation queries the response was YES. [2022-07-19 21:25:06,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 342 events. 5/342 cut-off events. For 8/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 584 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 396. Up to 29 conditions per place. [2022-07-19 21:25:06,237 INFO L132 encePairwiseOnDemand]: 262/272 looper letters, 28 selfloop transitions, 8 changer transitions 0/248 dead transitions. [2022-07-19 21:25:06,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 248 transitions, 595 flow [2022-07-19 21:25:06,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:25:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:25:06,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1168 transitions. [2022-07-19 21:25:06,241 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2022-07-19 21:25:06,241 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1168 transitions. [2022-07-19 21:25:06,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1168 transitions. [2022-07-19 21:25:06,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:06,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1168 transitions. [2022-07-19 21:25:06,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.6) internal successors, (1168), 5 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:06,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:06,247 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:06,247 INFO L186 Difference]: Start difference. First operand has 242 places, 240 transitions, 507 flow. Second operand 5 states and 1168 transitions. [2022-07-19 21:25:06,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 248 transitions, 595 flow [2022-07-19 21:25:06,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 248 transitions, 595 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:25:06,251 INFO L242 Difference]: Finished difference. Result has 247 places, 242 transitions, 539 flow [2022-07-19 21:25:06,252 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=539, PETRI_PLACES=247, PETRI_TRANSITIONS=242} [2022-07-19 21:25:06,253 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 2 predicate places. [2022-07-19 21:25:06,254 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 242 transitions, 539 flow [2022-07-19 21:25:06,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:06,254 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:06,255 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:06,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:25:06,255 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:06,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:06,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1043059878, now seen corresponding path program 1 times [2022-07-19 21:25:06,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:06,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546707454] [2022-07-19 21:25:06,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:06,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:25:06,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:06,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546707454] [2022-07-19 21:25:06,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546707454] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:25:06,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868228875] [2022-07-19 21:25:06,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:06,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:25:06,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:06,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:25:06,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:25:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:06,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 21:25:06,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:25:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:25:06,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:25:06,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 21:25:06,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868228875] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:25:06,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:25:06,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-07-19 21:25:06,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381988280] [2022-07-19 21:25:06,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:25:06,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 21:25:06,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:06,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 21:25:06,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:25:06,777 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 272 [2022-07-19 21:25:06,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 242 transitions, 539 flow. Second operand has 15 states, 15 states have (on average 227.33333333333334) internal successors, (3410), 15 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:06,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:06,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 272 [2022-07-19 21:25:06,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:06,967 INFO L129 PetriNetUnfolder]: 5/360 cut-off events. [2022-07-19 21:25:06,974 INFO L130 PetriNetUnfolder]: For 16/19 co-relation queries the response was YES. [2022-07-19 21:25:06,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 360 events. 5/360 cut-off events. For 16/19 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 566 event pairs, 0 based on Foata normal form. 4/354 useless extension candidates. Maximal degree in co-relation 446. Up to 23 conditions per place. [2022-07-19 21:25:06,980 INFO L132 encePairwiseOnDemand]: 256/272 looper letters, 30 selfloop transitions, 22 changer transitions 0/262 dead transitions. [2022-07-19 21:25:06,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 262 transitions, 687 flow [2022-07-19 21:25:06,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:25:06,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:25:06,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2520 transitions. [2022-07-19 21:25:06,985 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8422459893048129 [2022-07-19 21:25:06,985 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2520 transitions. [2022-07-19 21:25:06,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2520 transitions. [2022-07-19 21:25:06,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:06,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2520 transitions. [2022-07-19 21:25:06,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 229.0909090909091) internal successors, (2520), 11 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:07,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:07,003 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:07,003 INFO L186 Difference]: Start difference. First operand has 247 places, 242 transitions, 539 flow. Second operand 11 states and 2520 transitions. [2022-07-19 21:25:07,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 262 transitions, 687 flow [2022-07-19 21:25:07,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 262 transitions, 675 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-19 21:25:07,009 INFO L242 Difference]: Finished difference. Result has 257 places, 254 transitions, 638 flow [2022-07-19 21:25:07,010 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=638, PETRI_PLACES=257, PETRI_TRANSITIONS=254} [2022-07-19 21:25:07,011 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 12 predicate places. [2022-07-19 21:25:07,011 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 254 transitions, 638 flow [2022-07-19 21:25:07,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 227.33333333333334) internal successors, (3410), 15 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:07,012 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:07,013 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:07,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 21:25:07,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:25:07,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:07,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:07,233 INFO L85 PathProgramCache]: Analyzing trace with hash 785132506, now seen corresponding path program 2 times [2022-07-19 21:25:07,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:07,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011034780] [2022-07-19 21:25:07,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:07,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:07,386 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:25:07,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:07,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011034780] [2022-07-19 21:25:07,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011034780] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:25:07,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291351850] [2022-07-19 21:25:07,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:25:07,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:25:07,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:07,406 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:25:07,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:25:07,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 21:25:07,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:25:07,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:25:07,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:25:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-19 21:25:07,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:25:07,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291351850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:07,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:25:07,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-19 21:25:07,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046466759] [2022-07-19 21:25:07,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:07,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:25:07,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:07,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:25:07,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:25:07,630 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 272 [2022-07-19 21:25:07,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 254 transitions, 638 flow. Second operand has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:07,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:07,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 272 [2022-07-19 21:25:07,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:08,026 INFO L129 PetriNetUnfolder]: 276/1837 cut-off events. [2022-07-19 21:25:08,026 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-07-19 21:25:08,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2571 conditions, 1837 events. 276/1837 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 12785 event pairs, 5 based on Foata normal form. 0/1677 useless extension candidates. Maximal degree in co-relation 2560. Up to 212 conditions per place. [2022-07-19 21:25:08,036 INFO L132 encePairwiseOnDemand]: 260/272 looper letters, 63 selfloop transitions, 33 changer transitions 0/323 dead transitions. [2022-07-19 21:25:08,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 323 transitions, 979 flow [2022-07-19 21:25:08,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:25:08,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:25:08,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3050 transitions. [2022-07-19 21:25:08,041 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8625565610859729 [2022-07-19 21:25:08,041 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3050 transitions. [2022-07-19 21:25:08,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3050 transitions. [2022-07-19 21:25:08,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:08,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3050 transitions. [2022-07-19 21:25:08,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 234.6153846153846) internal successors, (3050), 13 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:08,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:08,053 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:08,053 INFO L186 Difference]: Start difference. First operand has 257 places, 254 transitions, 638 flow. Second operand 13 states and 3050 transitions. [2022-07-19 21:25:08,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 323 transitions, 979 flow [2022-07-19 21:25:08,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 323 transitions, 962 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-07-19 21:25:08,060 INFO L242 Difference]: Finished difference. Result has 272 places, 285 transitions, 817 flow [2022-07-19 21:25:08,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=817, PETRI_PLACES=272, PETRI_TRANSITIONS=285} [2022-07-19 21:25:08,061 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 27 predicate places. [2022-07-19 21:25:08,061 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 285 transitions, 817 flow [2022-07-19 21:25:08,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:08,062 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:08,062 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:08,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:25:08,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:25:08,281 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:08,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:08,282 INFO L85 PathProgramCache]: Analyzing trace with hash 348903810, now seen corresponding path program 3 times [2022-07-19 21:25:08,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:08,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829477262] [2022-07-19 21:25:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:08,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:08,376 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:25:08,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:08,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829477262] [2022-07-19 21:25:08,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829477262] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:25:08,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453634872] [2022-07-19 21:25:08,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 21:25:08,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:25:08,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:08,379 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:25:08,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:25:08,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-19 21:25:08,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:25:08,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:25:08,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:25:08,692 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-19 21:25:08,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:25:08,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453634872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:08,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:25:08,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-19 21:25:08,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778192001] [2022-07-19 21:25:08,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:08,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:25:08,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:08,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:25:08,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:25:08,696 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 272 [2022-07-19 21:25:08,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 285 transitions, 817 flow. Second operand has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:08,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:08,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 272 [2022-07-19 21:25:08,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:09,193 INFO L129 PetriNetUnfolder]: 349/2075 cut-off events. [2022-07-19 21:25:09,193 INFO L130 PetriNetUnfolder]: For 831/894 co-relation queries the response was YES. [2022-07-19 21:25:09,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3498 conditions, 2075 events. 349/2075 cut-off events. For 831/894 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 14865 event pairs, 90 based on Foata normal form. 24/2018 useless extension candidates. Maximal degree in co-relation 3481. Up to 393 conditions per place. [2022-07-19 21:25:09,202 INFO L132 encePairwiseOnDemand]: 259/272 looper letters, 71 selfloop transitions, 22 changer transitions 24/344 dead transitions. [2022-07-19 21:25:09,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 344 transitions, 1334 flow [2022-07-19 21:25:09,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:25:09,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-19 21:25:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2817 transitions. [2022-07-19 21:25:09,208 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8630514705882353 [2022-07-19 21:25:09,208 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2817 transitions. [2022-07-19 21:25:09,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2817 transitions. [2022-07-19 21:25:09,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:09,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2817 transitions. [2022-07-19 21:25:09,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 234.75) internal successors, (2817), 12 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:09,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 272.0) internal successors, (3536), 13 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:09,219 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 272.0) internal successors, (3536), 13 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:09,219 INFO L186 Difference]: Start difference. First operand has 272 places, 285 transitions, 817 flow. Second operand 12 states and 2817 transitions. [2022-07-19 21:25:09,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 344 transitions, 1334 flow [2022-07-19 21:25:09,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 344 transitions, 1334 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:25:09,230 INFO L242 Difference]: Finished difference. Result has 289 places, 294 transitions, 981 flow [2022-07-19 21:25:09,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=981, PETRI_PLACES=289, PETRI_TRANSITIONS=294} [2022-07-19 21:25:09,232 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 44 predicate places. [2022-07-19 21:25:09,232 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 294 transitions, 981 flow [2022-07-19 21:25:09,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:09,233 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:09,234 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:09,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 21:25:09,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:25:09,451 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash -178877372, now seen corresponding path program 1 times [2022-07-19 21:25:09,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:09,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167968243] [2022-07-19 21:25:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:09,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-19 21:25:09,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:09,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167968243] [2022-07-19 21:25:09,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167968243] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:09,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:09,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:25:09,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993282922] [2022-07-19 21:25:09,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:09,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:25:09,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:25:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:25:09,522 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 272 [2022-07-19 21:25:09,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 294 transitions, 981 flow. Second operand has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:09,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:09,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 272 [2022-07-19 21:25:09,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:09,790 INFO L129 PetriNetUnfolder]: 135/1919 cut-off events. [2022-07-19 21:25:09,790 INFO L130 PetriNetUnfolder]: For 947/1070 co-relation queries the response was YES. [2022-07-19 21:25:09,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2761 conditions, 1919 events. 135/1919 cut-off events. For 947/1070 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 12742 event pairs, 25 based on Foata normal form. 69/1921 useless extension candidates. Maximal degree in co-relation 2737. Up to 122 conditions per place. [2022-07-19 21:25:09,801 INFO L132 encePairwiseOnDemand]: 267/272 looper letters, 61 selfloop transitions, 4 changer transitions 0/314 dead transitions. [2022-07-19 21:25:09,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 314 transitions, 1210 flow [2022-07-19 21:25:09,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:25:09,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:25:09,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1224 transitions. [2022-07-19 21:25:09,804 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-07-19 21:25:09,804 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1224 transitions. [2022-07-19 21:25:09,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1224 transitions. [2022-07-19 21:25:09,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:09,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1224 transitions. [2022-07-19 21:25:09,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.8) internal successors, (1224), 5 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:09,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:09,809 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:09,809 INFO L186 Difference]: Start difference. First operand has 289 places, 294 transitions, 981 flow. Second operand 5 states and 1224 transitions. [2022-07-19 21:25:09,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 314 transitions, 1210 flow [2022-07-19 21:25:09,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 314 transitions, 1169 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-07-19 21:25:09,818 INFO L242 Difference]: Finished difference. Result has 285 places, 294 transitions, 983 flow [2022-07-19 21:25:09,818 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=983, PETRI_PLACES=285, PETRI_TRANSITIONS=294} [2022-07-19 21:25:09,819 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 40 predicate places. [2022-07-19 21:25:09,819 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 294 transitions, 983 flow [2022-07-19 21:25:09,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:09,825 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:09,825 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:09,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:25:09,825 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:09,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:09,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1817286902, now seen corresponding path program 4 times [2022-07-19 21:25:09,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:09,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595787544] [2022-07-19 21:25:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:09,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:25:09,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:09,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595787544] [2022-07-19 21:25:09,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595787544] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:25:09,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447018029] [2022-07-19 21:25:09,945 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 21:25:09,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:25:09,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:09,960 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:25:09,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 21:25:10,051 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 21:25:10,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:25:10,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 21:25:10,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:25:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:25:10,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:25:10,285 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:25:10,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447018029] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:25:10,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:25:10,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-07-19 21:25:10,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399295085] [2022-07-19 21:25:10,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:25:10,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 21:25:10,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:10,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 21:25:10,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-07-19 21:25:10,290 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 272 [2022-07-19 21:25:10,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 294 transitions, 983 flow. Second operand has 22 states, 22 states have (on average 227.1818181818182) internal successors, (4998), 22 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:10,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:10,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 272 [2022-07-19 21:25:10,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:10,744 INFO L129 PetriNetUnfolder]: 61/1584 cut-off events. [2022-07-19 21:25:10,744 INFO L130 PetriNetUnfolder]: For 397/430 co-relation queries the response was YES. [2022-07-19 21:25:10,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 1584 events. 61/1584 cut-off events. For 397/430 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 9188 event pairs, 4 based on Foata normal form. 19/1577 useless extension candidates. Maximal degree in co-relation 2159. Up to 52 conditions per place. [2022-07-19 21:25:10,752 INFO L132 encePairwiseOnDemand]: 256/272 looper letters, 38 selfloop transitions, 34 changer transitions 0/322 dead transitions. [2022-07-19 21:25:10,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 322 transitions, 1239 flow [2022-07-19 21:25:10,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:25:10,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:25:10,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3884 transitions. [2022-07-19 21:25:10,759 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8399653979238755 [2022-07-19 21:25:10,759 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3884 transitions. [2022-07-19 21:25:10,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3884 transitions. [2022-07-19 21:25:10,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:10,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3884 transitions. [2022-07-19 21:25:10,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 228.47058823529412) internal successors, (3884), 17 states have internal predecessors, (3884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:10,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 272.0) internal successors, (4896), 18 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:10,773 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 272.0) internal successors, (4896), 18 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:10,773 INFO L186 Difference]: Start difference. First operand has 285 places, 294 transitions, 983 flow. Second operand 17 states and 3884 transitions. [2022-07-19 21:25:10,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 322 transitions, 1239 flow [2022-07-19 21:25:10,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 322 transitions, 1239 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:25:10,781 INFO L242 Difference]: Finished difference. Result has 304 places, 308 transitions, 1158 flow [2022-07-19 21:25:10,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1158, PETRI_PLACES=304, PETRI_TRANSITIONS=308} [2022-07-19 21:25:10,783 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 59 predicate places. [2022-07-19 21:25:10,784 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 308 transitions, 1158 flow [2022-07-19 21:25:10,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 227.1818181818182) internal successors, (4998), 22 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:10,785 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:10,785 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:10,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 21:25:11,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:25:11,003 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:11,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1163814902, now seen corresponding path program 5 times [2022-07-19 21:25:11,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:11,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523926590] [2022-07-19 21:25:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:11,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-19 21:25:11,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:11,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523926590] [2022-07-19 21:25:11,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523926590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:11,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:11,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:11,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047656832] [2022-07-19 21:25:11,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:11,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:11,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:11,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:11,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:11,124 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-19 21:25:11,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 308 transitions, 1158 flow. Second operand has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:11,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:11,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-19 21:25:11,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:11,944 INFO L129 PetriNetUnfolder]: 818/5846 cut-off events. [2022-07-19 21:25:11,945 INFO L130 PetriNetUnfolder]: For 1621/1668 co-relation queries the response was YES. [2022-07-19 21:25:11,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9238 conditions, 5846 events. 818/5846 cut-off events. For 1621/1668 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 52785 event pairs, 17 based on Foata normal form. 59/5717 useless extension candidates. Maximal degree in co-relation 9210. Up to 704 conditions per place. [2022-07-19 21:25:11,975 INFO L132 encePairwiseOnDemand]: 261/272 looper letters, 89 selfloop transitions, 23 changer transitions 4/389 dead transitions. [2022-07-19 21:25:11,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 389 transitions, 1634 flow [2022-07-19 21:25:11,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:25:11,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:25:11,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2325 transitions. [2022-07-19 21:25:11,979 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8547794117647058 [2022-07-19 21:25:11,979 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2325 transitions. [2022-07-19 21:25:11,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2325 transitions. [2022-07-19 21:25:11,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:11,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2325 transitions. [2022-07-19 21:25:11,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 232.5) internal successors, (2325), 10 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:11,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:11,987 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:11,987 INFO L186 Difference]: Start difference. First operand has 304 places, 308 transitions, 1158 flow. Second operand 10 states and 2325 transitions. [2022-07-19 21:25:11,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 389 transitions, 1634 flow [2022-07-19 21:25:12,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 389 transitions, 1589 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-07-19 21:25:12,004 INFO L242 Difference]: Finished difference. Result has 308 places, 323 transitions, 1223 flow [2022-07-19 21:25:12,005 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1223, PETRI_PLACES=308, PETRI_TRANSITIONS=323} [2022-07-19 21:25:12,006 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 63 predicate places. [2022-07-19 21:25:12,006 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 323 transitions, 1223 flow [2022-07-19 21:25:12,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:12,006 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:12,007 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:12,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:25:12,007 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:12,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:12,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1112339455, now seen corresponding path program 1 times [2022-07-19 21:25:12,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:12,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507865191] [2022-07-19 21:25:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:12,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-19 21:25:12,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:12,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507865191] [2022-07-19 21:25:12,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507865191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:12,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:12,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:25:12,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548493609] [2022-07-19 21:25:12,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:12,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:25:12,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:12,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:25:12,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:25:12,112 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-19 21:25:12,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 323 transitions, 1223 flow. Second operand has 8 states, 8 states have (on average 224.75) internal successors, (1798), 8 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:12,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:12,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-19 21:25:12,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:12,952 INFO L129 PetriNetUnfolder]: 791/4837 cut-off events. [2022-07-19 21:25:12,952 INFO L130 PetriNetUnfolder]: For 2236/2328 co-relation queries the response was YES. [2022-07-19 21:25:12,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8393 conditions, 4837 events. 791/4837 cut-off events. For 2236/2328 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 40634 event pairs, 269 based on Foata normal form. 32/4665 useless extension candidates. Maximal degree in co-relation 8362. Up to 730 conditions per place. [2022-07-19 21:25:12,984 INFO L132 encePairwiseOnDemand]: 263/272 looper letters, 93 selfloop transitions, 18 changer transitions 28/412 dead transitions. [2022-07-19 21:25:12,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 412 transitions, 1807 flow [2022-07-19 21:25:12,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:25:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:25:12,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2552 transitions. [2022-07-19 21:25:12,989 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8529411764705882 [2022-07-19 21:25:12,989 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2552 transitions. [2022-07-19 21:25:12,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2552 transitions. [2022-07-19 21:25:12,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:12,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2552 transitions. [2022-07-19 21:25:12,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 232.0) internal successors, (2552), 11 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:12,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:12,997 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:12,997 INFO L186 Difference]: Start difference. First operand has 308 places, 323 transitions, 1223 flow. Second operand 11 states and 2552 transitions. [2022-07-19 21:25:12,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 412 transitions, 1807 flow [2022-07-19 21:25:13,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 412 transitions, 1794 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:25:13,012 INFO L242 Difference]: Finished difference. Result has 321 places, 333 transitions, 1327 flow [2022-07-19 21:25:13,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1327, PETRI_PLACES=321, PETRI_TRANSITIONS=333} [2022-07-19 21:25:13,013 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 76 predicate places. [2022-07-19 21:25:13,014 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 333 transitions, 1327 flow [2022-07-19 21:25:13,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 224.75) internal successors, (1798), 8 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:13,014 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:13,014 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:13,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:25:13,015 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:13,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:13,015 INFO L85 PathProgramCache]: Analyzing trace with hash 169689273, now seen corresponding path program 2 times [2022-07-19 21:25:13,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:13,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409721067] [2022-07-19 21:25:13,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:13,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-19 21:25:13,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:13,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409721067] [2022-07-19 21:25:13,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409721067] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:13,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:13,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:13,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910475256] [2022-07-19 21:25:13,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:13,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:13,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:13,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:13,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:13,210 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-19 21:25:13,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 333 transitions, 1327 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:13,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:13,212 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-19 21:25:13,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:14,196 INFO L129 PetriNetUnfolder]: 960/5872 cut-off events. [2022-07-19 21:25:14,197 INFO L130 PetriNetUnfolder]: For 5408/5584 co-relation queries the response was YES. [2022-07-19 21:25:14,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11153 conditions, 5872 events. 960/5872 cut-off events. For 5408/5584 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 52771 event pairs, 261 based on Foata normal form. 79/5861 useless extension candidates. Maximal degree in co-relation 11116. Up to 645 conditions per place. [2022-07-19 21:25:14,231 INFO L132 encePairwiseOnDemand]: 256/272 looper letters, 108 selfloop transitions, 63 changer transitions 16/460 dead transitions. [2022-07-19 21:25:14,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 460 transitions, 2348 flow [2022-07-19 21:25:14,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:25:14,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:25:14,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3257 transitions. [2022-07-19 21:25:14,236 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8553046218487395 [2022-07-19 21:25:14,236 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3257 transitions. [2022-07-19 21:25:14,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3257 transitions. [2022-07-19 21:25:14,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:14,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3257 transitions. [2022-07-19 21:25:14,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 232.64285714285714) internal successors, (3257), 14 states have internal predecessors, (3257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:14,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 272.0) internal successors, (4080), 15 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:14,245 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 272.0) internal successors, (4080), 15 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:14,245 INFO L186 Difference]: Start difference. First operand has 321 places, 333 transitions, 1327 flow. Second operand 14 states and 3257 transitions. [2022-07-19 21:25:14,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 460 transitions, 2348 flow [2022-07-19 21:25:14,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 460 transitions, 2342 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:14,264 INFO L242 Difference]: Finished difference. Result has 340 places, 371 transitions, 1831 flow [2022-07-19 21:25:14,265 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1831, PETRI_PLACES=340, PETRI_TRANSITIONS=371} [2022-07-19 21:25:14,265 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 95 predicate places. [2022-07-19 21:25:14,265 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 371 transitions, 1831 flow [2022-07-19 21:25:14,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:14,266 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:14,267 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:14,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:25:14,267 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:14,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:14,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1056484631, now seen corresponding path program 3 times [2022-07-19 21:25:14,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:14,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606113369] [2022-07-19 21:25:14,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:14,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-19 21:25:14,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:14,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606113369] [2022-07-19 21:25:14,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606113369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:14,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:14,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:14,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241609138] [2022-07-19 21:25:14,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:14,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:14,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:14,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:14,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:14,424 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-19 21:25:14,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 371 transitions, 1831 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:14,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:14,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-19 21:25:14,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:15,644 INFO L129 PetriNetUnfolder]: 952/6465 cut-off events. [2022-07-19 21:25:15,644 INFO L130 PetriNetUnfolder]: For 10395/10875 co-relation queries the response was YES. [2022-07-19 21:25:15,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13289 conditions, 6465 events. 952/6465 cut-off events. For 10395/10875 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 60156 event pairs, 337 based on Foata normal form. 98/6476 useless extension candidates. Maximal degree in co-relation 13243. Up to 787 conditions per place. [2022-07-19 21:25:15,684 INFO L132 encePairwiseOnDemand]: 260/272 looper letters, 142 selfloop transitions, 48 changer transitions 11/474 dead transitions. [2022-07-19 21:25:15,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 474 transitions, 2790 flow [2022-07-19 21:25:15,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:25:15,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:25:15,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2328 transitions. [2022-07-19 21:25:15,686 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8558823529411764 [2022-07-19 21:25:15,686 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2328 transitions. [2022-07-19 21:25:15,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2328 transitions. [2022-07-19 21:25:15,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:15,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2328 transitions. [2022-07-19 21:25:15,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 232.8) internal successors, (2328), 10 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:15,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:15,692 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:15,692 INFO L186 Difference]: Start difference. First operand has 340 places, 371 transitions, 1831 flow. Second operand 10 states and 2328 transitions. [2022-07-19 21:25:15,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 474 transitions, 2790 flow [2022-07-19 21:25:15,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 474 transitions, 2763 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:15,733 INFO L242 Difference]: Finished difference. Result has 352 places, 384 transitions, 2099 flow [2022-07-19 21:25:15,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2099, PETRI_PLACES=352, PETRI_TRANSITIONS=384} [2022-07-19 21:25:15,734 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 107 predicate places. [2022-07-19 21:25:15,734 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 384 transitions, 2099 flow [2022-07-19 21:25:15,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:15,735 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:15,735 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:15,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:25:15,735 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:15,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:15,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1586049013, now seen corresponding path program 4 times [2022-07-19 21:25:15,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:15,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669313583] [2022-07-19 21:25:15,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:15,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:15,899 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-19 21:25:15,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:15,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669313583] [2022-07-19 21:25:15,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669313583] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:15,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:15,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:15,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556954146] [2022-07-19 21:25:15,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:15,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:15,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:15,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:15,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:15,902 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-19 21:25:15,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 384 transitions, 2099 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:15,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:15,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-19 21:25:15,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:17,251 INFO L129 PetriNetUnfolder]: 1121/7501 cut-off events. [2022-07-19 21:25:17,251 INFO L130 PetriNetUnfolder]: For 19206/19737 co-relation queries the response was YES. [2022-07-19 21:25:17,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16732 conditions, 7501 events. 1121/7501 cut-off events. For 19206/19737 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 74022 event pairs, 360 based on Foata normal form. 121/7522 useless extension candidates. Maximal degree in co-relation 16680. Up to 946 conditions per place. [2022-07-19 21:25:17,329 INFO L132 encePairwiseOnDemand]: 257/272 looper letters, 115 selfloop transitions, 78 changer transitions 13/479 dead transitions. [2022-07-19 21:25:17,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 479 transitions, 3260 flow [2022-07-19 21:25:17,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:25:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:25:17,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2336 transitions. [2022-07-19 21:25:17,337 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2022-07-19 21:25:17,337 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2336 transitions. [2022-07-19 21:25:17,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2336 transitions. [2022-07-19 21:25:17,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:17,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2336 transitions. [2022-07-19 21:25:17,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 233.6) internal successors, (2336), 10 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:17,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:17,342 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:17,342 INFO L186 Difference]: Start difference. First operand has 352 places, 384 transitions, 2099 flow. Second operand 10 states and 2336 transitions. [2022-07-19 21:25:17,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 479 transitions, 3260 flow [2022-07-19 21:25:17,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 479 transitions, 3232 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:17,397 INFO L242 Difference]: Finished difference. Result has 367 places, 403 transitions, 2622 flow [2022-07-19 21:25:17,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2622, PETRI_PLACES=367, PETRI_TRANSITIONS=403} [2022-07-19 21:25:17,398 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 122 predicate places. [2022-07-19 21:25:17,398 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 403 transitions, 2622 flow [2022-07-19 21:25:17,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:17,399 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:17,399 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:17,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:25:17,399 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:17,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:17,400 INFO L85 PathProgramCache]: Analyzing trace with hash -355461643, now seen corresponding path program 5 times [2022-07-19 21:25:17,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:17,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785127447] [2022-07-19 21:25:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:17,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:17,494 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-19 21:25:17,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:17,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785127447] [2022-07-19 21:25:17,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785127447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:17,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:17,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:17,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88374838] [2022-07-19 21:25:17,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:17,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:17,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:17,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:17,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:17,497 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-19 21:25:17,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 403 transitions, 2622 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:17,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:17,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-19 21:25:17,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:19,028 INFO L129 PetriNetUnfolder]: 1205/7916 cut-off events. [2022-07-19 21:25:19,028 INFO L130 PetriNetUnfolder]: For 29261/30189 co-relation queries the response was YES. [2022-07-19 21:25:19,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18800 conditions, 7916 events. 1205/7916 cut-off events. For 29261/30189 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 78466 event pairs, 454 based on Foata normal form. 139/7931 useless extension candidates. Maximal degree in co-relation 18741. Up to 836 conditions per place. [2022-07-19 21:25:19,091 INFO L132 encePairwiseOnDemand]: 260/272 looper letters, 148 selfloop transitions, 73 changer transitions 12/506 dead transitions. [2022-07-19 21:25:19,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 506 transitions, 3838 flow [2022-07-19 21:25:19,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:25:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:25:19,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2345 transitions. [2022-07-19 21:25:19,093 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8621323529411765 [2022-07-19 21:25:19,093 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2345 transitions. [2022-07-19 21:25:19,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2345 transitions. [2022-07-19 21:25:19,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:19,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2345 transitions. [2022-07-19 21:25:19,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 234.5) internal successors, (2345), 10 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:19,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:19,098 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:19,098 INFO L186 Difference]: Start difference. First operand has 367 places, 403 transitions, 2622 flow. Second operand 10 states and 2345 transitions. [2022-07-19 21:25:19,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 506 transitions, 3838 flow [2022-07-19 21:25:19,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 506 transitions, 3804 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-07-19 21:25:19,177 INFO L242 Difference]: Finished difference. Result has 381 places, 413 transitions, 3040 flow [2022-07-19 21:25:19,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3040, PETRI_PLACES=381, PETRI_TRANSITIONS=413} [2022-07-19 21:25:19,178 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 136 predicate places. [2022-07-19 21:25:19,178 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 413 transitions, 3040 flow [2022-07-19 21:25:19,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:19,179 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:19,179 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:19,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:25:19,179 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:19,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:19,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1751499251, now seen corresponding path program 6 times [2022-07-19 21:25:19,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:19,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933289935] [2022-07-19 21:25:19,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:19,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:19,259 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-19 21:25:19,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:19,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933289935] [2022-07-19 21:25:19,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933289935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:19,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:19,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:19,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142602852] [2022-07-19 21:25:19,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:19,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:19,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:19,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:19,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:19,263 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-19 21:25:19,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 413 transitions, 3040 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:19,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:19,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-19 21:25:19,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:21,407 INFO L129 PetriNetUnfolder]: 1541/10742 cut-off events. [2022-07-19 21:25:21,407 INFO L130 PetriNetUnfolder]: For 41820/42653 co-relation queries the response was YES. [2022-07-19 21:25:21,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25121 conditions, 10742 events. 1541/10742 cut-off events. For 41820/42653 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 116995 event pairs, 350 based on Foata normal form. 199/10792 useless extension candidates. Maximal degree in co-relation 25056. Up to 1091 conditions per place. [2022-07-19 21:25:21,493 INFO L132 encePairwiseOnDemand]: 259/272 looper letters, 139 selfloop transitions, 89 changer transitions 8/509 dead transitions. [2022-07-19 21:25:21,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 509 transitions, 4240 flow [2022-07-19 21:25:21,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:25:21,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:25:21,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2551 transitions. [2022-07-19 21:25:21,496 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8526069518716578 [2022-07-19 21:25:21,496 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2551 transitions. [2022-07-19 21:25:21,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2551 transitions. [2022-07-19 21:25:21,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:21,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2551 transitions. [2022-07-19 21:25:21,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 231.9090909090909) internal successors, (2551), 11 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:21,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:21,502 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:21,502 INFO L186 Difference]: Start difference. First operand has 381 places, 413 transitions, 3040 flow. Second operand 11 states and 2551 transitions. [2022-07-19 21:25:21,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 509 transitions, 4240 flow [2022-07-19 21:25:21,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 509 transitions, 4090 flow, removed 25 selfloop flow, removed 6 redundant places. [2022-07-19 21:25:21,606 INFO L242 Difference]: Finished difference. Result has 389 places, 436 transitions, 3575 flow [2022-07-19 21:25:21,607 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3575, PETRI_PLACES=389, PETRI_TRANSITIONS=436} [2022-07-19 21:25:21,607 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 144 predicate places. [2022-07-19 21:25:21,607 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 436 transitions, 3575 flow [2022-07-19 21:25:21,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:21,608 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:21,608 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:21,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:25:21,608 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:21,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:21,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1014004619, now seen corresponding path program 7 times [2022-07-19 21:25:21,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:21,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535628216] [2022-07-19 21:25:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:21,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:21,709 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-19 21:25:21,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:21,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535628216] [2022-07-19 21:25:21,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535628216] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:21,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:21,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:21,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189158490] [2022-07-19 21:25:21,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:21,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:21,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:21,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:21,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:21,712 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-19 21:25:21,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 436 transitions, 3575 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:21,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:21,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-19 21:25:21,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:24,075 INFO L129 PetriNetUnfolder]: 1784/12093 cut-off events. [2022-07-19 21:25:24,076 INFO L130 PetriNetUnfolder]: For 53317/54485 co-relation queries the response was YES. [2022-07-19 21:25:24,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29036 conditions, 12093 events. 1784/12093 cut-off events. For 53317/54485 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 134440 event pairs, 294 based on Foata normal form. 386/12323 useless extension candidates. Maximal degree in co-relation 28970. Up to 1087 conditions per place. [2022-07-19 21:25:24,205 INFO L132 encePairwiseOnDemand]: 252/272 looper letters, 134 selfloop transitions, 154 changer transitions 26/587 dead transitions. [2022-07-19 21:25:24,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 587 transitions, 5556 flow [2022-07-19 21:25:24,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:25:24,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:25:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3717 transitions. [2022-07-19 21:25:24,208 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8540900735294118 [2022-07-19 21:25:24,208 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3717 transitions. [2022-07-19 21:25:24,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3717 transitions. [2022-07-19 21:25:24,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:24,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3717 transitions. [2022-07-19 21:25:24,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 232.3125) internal successors, (3717), 16 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:24,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 272.0) internal successors, (4624), 17 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:24,216 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 272.0) internal successors, (4624), 17 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:24,216 INFO L186 Difference]: Start difference. First operand has 389 places, 436 transitions, 3575 flow. Second operand 16 states and 3717 transitions. [2022-07-19 21:25:24,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 587 transitions, 5556 flow [2022-07-19 21:25:24,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 587 transitions, 5470 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-19 21:25:24,356 INFO L242 Difference]: Finished difference. Result has 409 places, 498 transitions, 4756 flow [2022-07-19 21:25:24,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=3508, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4756, PETRI_PLACES=409, PETRI_TRANSITIONS=498} [2022-07-19 21:25:24,357 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 164 predicate places. [2022-07-19 21:25:24,357 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 498 transitions, 4756 flow [2022-07-19 21:25:24,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:24,357 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:24,358 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:24,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:25:24,358 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:24,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:24,358 INFO L85 PathProgramCache]: Analyzing trace with hash 231247173, now seen corresponding path program 8 times [2022-07-19 21:25:24,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:24,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805101270] [2022-07-19 21:25:24,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:24,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-19 21:25:24,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:24,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805101270] [2022-07-19 21:25:24,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805101270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:24,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:24,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:24,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339055984] [2022-07-19 21:25:24,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:24,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:24,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:24,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:24,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:24,456 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-19 21:25:24,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 498 transitions, 4756 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:24,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:24,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-19 21:25:24,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:27,228 INFO L129 PetriNetUnfolder]: 1772/11767 cut-off events. [2022-07-19 21:25:27,229 INFO L130 PetriNetUnfolder]: For 65687/67199 co-relation queries the response was YES. [2022-07-19 21:25:27,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30931 conditions, 11767 events. 1772/11767 cut-off events. For 65687/67199 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 128945 event pairs, 347 based on Foata normal form. 380/11984 useless extension candidates. Maximal degree in co-relation 30855. Up to 1150 conditions per place. [2022-07-19 21:25:27,343 INFO L132 encePairwiseOnDemand]: 258/272 looper letters, 156 selfloop transitions, 124 changer transitions 12/565 dead transitions. [2022-07-19 21:25:27,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 565 transitions, 5866 flow [2022-07-19 21:25:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:25:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-19 21:25:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2560 transitions. [2022-07-19 21:25:27,346 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8556149732620321 [2022-07-19 21:25:27,346 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2560 transitions. [2022-07-19 21:25:27,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2560 transitions. [2022-07-19 21:25:27,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:27,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2560 transitions. [2022-07-19 21:25:27,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 232.72727272727272) internal successors, (2560), 11 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:27,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:27,352 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 272.0) internal successors, (3264), 12 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:27,352 INFO L186 Difference]: Start difference. First operand has 409 places, 498 transitions, 4756 flow. Second operand 11 states and 2560 transitions. [2022-07-19 21:25:27,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 565 transitions, 5866 flow [2022-07-19 21:25:27,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 565 transitions, 5765 flow, removed 26 selfloop flow, removed 8 redundant places. [2022-07-19 21:25:27,537 INFO L242 Difference]: Finished difference. Result has 410 places, 505 transitions, 5152 flow [2022-07-19 21:25:27,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=4673, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5152, PETRI_PLACES=410, PETRI_TRANSITIONS=505} [2022-07-19 21:25:27,538 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 165 predicate places. [2022-07-19 21:25:27,538 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 505 transitions, 5152 flow [2022-07-19 21:25:27,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:27,538 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:27,539 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:27,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:25:27,539 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:27,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:27,539 INFO L85 PathProgramCache]: Analyzing trace with hash 877685243, now seen corresponding path program 9 times [2022-07-19 21:25:27,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:27,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042528535] [2022-07-19 21:25:27,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:27,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:27,620 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-19 21:25:27,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:27,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042528535] [2022-07-19 21:25:27,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042528535] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:27,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:27,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:27,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119106566] [2022-07-19 21:25:27,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:27,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:27,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:27,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:27,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:27,623 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-19 21:25:27,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 505 transitions, 5152 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:27,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:27,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-19 21:25:27,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:30,249 INFO L129 PetriNetUnfolder]: 1805/12290 cut-off events. [2022-07-19 21:25:30,249 INFO L130 PetriNetUnfolder]: For 77053/78590 co-relation queries the response was YES. [2022-07-19 21:25:30,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32726 conditions, 12290 events. 1805/12290 cut-off events. For 77053/78590 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 136032 event pairs, 336 based on Foata normal form. 444/12583 useless extension candidates. Maximal degree in co-relation 32649. Up to 1927 conditions per place. [2022-07-19 21:25:30,394 INFO L132 encePairwiseOnDemand]: 256/272 looper letters, 165 selfloop transitions, 129 changer transitions 9/576 dead transitions. [2022-07-19 21:25:30,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 576 transitions, 6413 flow [2022-07-19 21:25:30,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:25:30,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:25:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2319 transitions. [2022-07-19 21:25:30,397 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8525735294117647 [2022-07-19 21:25:30,397 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2319 transitions. [2022-07-19 21:25:30,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2319 transitions. [2022-07-19 21:25:30,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:30,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2319 transitions. [2022-07-19 21:25:30,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 231.9) internal successors, (2319), 10 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:30,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:30,402 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 272.0) internal successors, (2992), 11 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:30,403 INFO L186 Difference]: Start difference. First operand has 410 places, 505 transitions, 5152 flow. Second operand 10 states and 2319 transitions. [2022-07-19 21:25:30,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 576 transitions, 6413 flow [2022-07-19 21:25:30,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 576 transitions, 6228 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-07-19 21:25:30,620 INFO L242 Difference]: Finished difference. Result has 415 places, 524 transitions, 5693 flow [2022-07-19 21:25:30,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=4977, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5693, PETRI_PLACES=415, PETRI_TRANSITIONS=524} [2022-07-19 21:25:30,621 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 170 predicate places. [2022-07-19 21:25:30,621 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 524 transitions, 5693 flow [2022-07-19 21:25:30,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:30,622 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:30,622 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:30,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:25:30,622 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:30,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:30,623 INFO L85 PathProgramCache]: Analyzing trace with hash -4048551, now seen corresponding path program 10 times [2022-07-19 21:25:30,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:30,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614773768] [2022-07-19 21:25:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:30,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-19 21:25:30,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:30,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614773768] [2022-07-19 21:25:30,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614773768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:30,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:30,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:30,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342840634] [2022-07-19 21:25:30,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:30,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:30,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:30,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:30,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:30,725 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-19 21:25:30,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 524 transitions, 5693 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:30,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:30,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-19 21:25:30,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:33,533 INFO L129 PetriNetUnfolder]: 1810/12137 cut-off events. [2022-07-19 21:25:33,533 INFO L130 PetriNetUnfolder]: For 81005/82570 co-relation queries the response was YES. [2022-07-19 21:25:33,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33108 conditions, 12137 events. 1810/12137 cut-off events. For 81005/82570 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 133264 event pairs, 236 based on Foata normal form. 611/12600 useless extension candidates. Maximal degree in co-relation 33029. Up to 1726 conditions per place. [2022-07-19 21:25:33,642 INFO L132 encePairwiseOnDemand]: 250/272 looper letters, 132 selfloop transitions, 185 changer transitions 16/606 dead transitions. [2022-07-19 21:25:33,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 606 transitions, 7132 flow [2022-07-19 21:25:33,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:25:33,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:25:33,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3914 transitions. [2022-07-19 21:25:33,645 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8464532871972318 [2022-07-19 21:25:33,646 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3914 transitions. [2022-07-19 21:25:33,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3914 transitions. [2022-07-19 21:25:33,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:33,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3914 transitions. [2022-07-19 21:25:33,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 230.23529411764707) internal successors, (3914), 17 states have internal predecessors, (3914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:33,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 272.0) internal successors, (4896), 18 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:33,653 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 272.0) internal successors, (4896), 18 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:33,653 INFO L186 Difference]: Start difference. First operand has 415 places, 524 transitions, 5693 flow. Second operand 17 states and 3914 transitions. [2022-07-19 21:25:33,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 606 transitions, 7132 flow [2022-07-19 21:25:33,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 606 transitions, 7049 flow, removed 38 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:33,850 INFO L242 Difference]: Finished difference. Result has 435 places, 540 transitions, 6479 flow [2022-07-19 21:25:33,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=5654, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6479, PETRI_PLACES=435, PETRI_TRANSITIONS=540} [2022-07-19 21:25:33,852 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 190 predicate places. [2022-07-19 21:25:33,852 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 540 transitions, 6479 flow [2022-07-19 21:25:33,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:33,852 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:33,852 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:33,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 21:25:33,853 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:33,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:33,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1652799699, now seen corresponding path program 1 times [2022-07-19 21:25:33,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:33,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213508276] [2022-07-19 21:25:33,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:33,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:33,932 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-19 21:25:33,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:33,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213508276] [2022-07-19 21:25:33,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213508276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:33,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:33,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:25:33,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628404949] [2022-07-19 21:25:33,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:33,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:25:33,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:33,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:25:33,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:25:33,935 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-19 21:25:33,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 540 transitions, 6479 flow. Second operand has 8 states, 8 states have (on average 224.75) internal successors, (1798), 8 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:33,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:33,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-19 21:25:33,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:37,352 INFO L129 PetriNetUnfolder]: 2731/14564 cut-off events. [2022-07-19 21:25:37,353 INFO L130 PetriNetUnfolder]: For 61805/62749 co-relation queries the response was YES. [2022-07-19 21:25:37,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37904 conditions, 14564 events. 2731/14564 cut-off events. For 61805/62749 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 165399 event pairs, 1057 based on Foata normal form. 258/14634 useless extension candidates. Maximal degree in co-relation 37818. Up to 3434 conditions per place. [2022-07-19 21:25:37,553 INFO L132 encePairwiseOnDemand]: 265/272 looper letters, 130 selfloop transitions, 16 changer transitions 5/617 dead transitions. [2022-07-19 21:25:37,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 617 transitions, 7172 flow [2022-07-19 21:25:37,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:25:37,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:25:37,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1634 transitions. [2022-07-19 21:25:37,555 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8581932773109243 [2022-07-19 21:25:37,555 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1634 transitions. [2022-07-19 21:25:37,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1634 transitions. [2022-07-19 21:25:37,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:37,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1634 transitions. [2022-07-19 21:25:37,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 233.42857142857142) internal successors, (1634), 7 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:37,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:37,558 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:37,558 INFO L186 Difference]: Start difference. First operand has 435 places, 540 transitions, 6479 flow. Second operand 7 states and 1634 transitions. [2022-07-19 21:25:37,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 617 transitions, 7172 flow [2022-07-19 21:25:37,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 617 transitions, 7011 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-07-19 21:25:37,771 INFO L242 Difference]: Finished difference. Result has 436 places, 546 transitions, 6416 flow [2022-07-19 21:25:37,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=6318, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6416, PETRI_PLACES=436, PETRI_TRANSITIONS=546} [2022-07-19 21:25:37,772 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 191 predicate places. [2022-07-19 21:25:37,772 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 546 transitions, 6416 flow [2022-07-19 21:25:37,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 224.75) internal successors, (1798), 8 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:37,772 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:37,772 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:37,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 21:25:37,773 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:37,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:37,773 INFO L85 PathProgramCache]: Analyzing trace with hash 967671905, now seen corresponding path program 11 times [2022-07-19 21:25:37,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:37,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573468758] [2022-07-19 21:25:37,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:37,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:37,884 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-19 21:25:37,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:37,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573468758] [2022-07-19 21:25:37,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573468758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:37,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:37,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:37,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914493829] [2022-07-19 21:25:37,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:37,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:37,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:37,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:37,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:37,887 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-19 21:25:37,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 546 transitions, 6416 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:37,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:37,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-19 21:25:37,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:41,138 INFO L129 PetriNetUnfolder]: 2191/15055 cut-off events. [2022-07-19 21:25:41,139 INFO L130 PetriNetUnfolder]: For 97614/99034 co-relation queries the response was YES. [2022-07-19 21:25:41,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41424 conditions, 15055 events. 2191/15055 cut-off events. For 97614/99034 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 173948 event pairs, 261 based on Foata normal form. 564/15427 useless extension candidates. Maximal degree in co-relation 41337. Up to 2387 conditions per place. [2022-07-19 21:25:41,320 INFO L132 encePairwiseOnDemand]: 252/272 looper letters, 172 selfloop transitions, 197 changer transitions 15/663 dead transitions. [2022-07-19 21:25:41,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 663 transitions, 8732 flow [2022-07-19 21:25:41,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:25:41,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:25:41,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3018 transitions. [2022-07-19 21:25:41,463 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8535067873303167 [2022-07-19 21:25:41,463 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3018 transitions. [2022-07-19 21:25:41,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3018 transitions. [2022-07-19 21:25:41,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:41,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3018 transitions. [2022-07-19 21:25:41,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 232.15384615384616) internal successors, (3018), 13 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,468 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 272.0) internal successors, (3808), 14 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,468 INFO L186 Difference]: Start difference. First operand has 436 places, 546 transitions, 6416 flow. Second operand 13 states and 3018 transitions. [2022-07-19 21:25:41,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 663 transitions, 8732 flow [2022-07-19 21:25:41,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 663 transitions, 8708 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-07-19 21:25:41,739 INFO L242 Difference]: Finished difference. Result has 448 places, 593 transitions, 8158 flow [2022-07-19 21:25:41,739 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=6392, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8158, PETRI_PLACES=448, PETRI_TRANSITIONS=593} [2022-07-19 21:25:41,740 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 203 predicate places. [2022-07-19 21:25:41,740 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 593 transitions, 8158 flow [2022-07-19 21:25:41,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,740 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:41,741 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:41,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 21:25:41,741 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:41,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:41,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1865901937, now seen corresponding path program 2 times [2022-07-19 21:25:41,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:41,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46619904] [2022-07-19 21:25:41,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:41,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-19 21:25:41,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:41,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46619904] [2022-07-19 21:25:41,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46619904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:41,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:41,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:41,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546297581] [2022-07-19 21:25:41,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:41,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:41,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:41,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:41,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:41,816 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-19 21:25:41,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 593 transitions, 8158 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:41,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:41,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-19 21:25:41,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:46,881 INFO L129 PetriNetUnfolder]: 3959/20995 cut-off events. [2022-07-19 21:25:46,882 INFO L130 PetriNetUnfolder]: For 103854/105080 co-relation queries the response was YES. [2022-07-19 21:25:47,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57196 conditions, 20995 events. 3959/20995 cut-off events. For 103854/105080 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 259189 event pairs, 1293 based on Foata normal form. 442/21242 useless extension candidates. Maximal degree in co-relation 57106. Up to 4525 conditions per place. [2022-07-19 21:25:47,286 INFO L132 encePairwiseOnDemand]: 262/272 looper letters, 121 selfloop transitions, 35 changer transitions 3/672 dead transitions. [2022-07-19 21:25:47,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 672 transitions, 8887 flow [2022-07-19 21:25:47,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:25:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:25:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1641 transitions. [2022-07-19 21:25:47,288 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8618697478991597 [2022-07-19 21:25:47,288 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1641 transitions. [2022-07-19 21:25:47,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1641 transitions. [2022-07-19 21:25:47,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:47,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1641 transitions. [2022-07-19 21:25:47,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 234.42857142857142) internal successors, (1641), 7 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:47,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:47,291 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:47,291 INFO L186 Difference]: Start difference. First operand has 448 places, 593 transitions, 8158 flow. Second operand 7 states and 1641 transitions. [2022-07-19 21:25:47,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 672 transitions, 8887 flow [2022-07-19 21:25:47,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 672 transitions, 8820 flow, removed 13 selfloop flow, removed 6 redundant places. [2022-07-19 21:25:47,715 INFO L242 Difference]: Finished difference. Result has 450 places, 610 transitions, 8362 flow [2022-07-19 21:25:47,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=8091, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8362, PETRI_PLACES=450, PETRI_TRANSITIONS=610} [2022-07-19 21:25:47,716 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 205 predicate places. [2022-07-19 21:25:47,716 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 610 transitions, 8362 flow [2022-07-19 21:25:47,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:47,717 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:47,717 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:47,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 21:25:47,717 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:47,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:47,718 INFO L85 PathProgramCache]: Analyzing trace with hash 320403445, now seen corresponding path program 3 times [2022-07-19 21:25:47,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:47,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147451799] [2022-07-19 21:25:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:47,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-19 21:25:47,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:47,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147451799] [2022-07-19 21:25:47,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147451799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:47,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:47,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:47,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739058859] [2022-07-19 21:25:47,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:47,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:47,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:47,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:47,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:47,812 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-19 21:25:47,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 610 transitions, 8362 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:47,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:47,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-19 21:25:47,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:53,567 INFO L129 PetriNetUnfolder]: 4318/24222 cut-off events. [2022-07-19 21:25:53,568 INFO L130 PetriNetUnfolder]: For 136209/138388 co-relation queries the response was YES. [2022-07-19 21:25:54,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69011 conditions, 24222 events. 4318/24222 cut-off events. For 136209/138388 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 309001 event pairs, 1252 based on Foata normal form. 820/24816 useless extension candidates. Maximal degree in co-relation 68921. Up to 3358 conditions per place. [2022-07-19 21:25:54,228 INFO L132 encePairwiseOnDemand]: 258/272 looper letters, 106 selfloop transitions, 76 changer transitions 4/699 dead transitions. [2022-07-19 21:25:54,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 699 transitions, 9404 flow [2022-07-19 21:25:54,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:25:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:25:54,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3239 transitions. [2022-07-19 21:25:54,231 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850577731092437 [2022-07-19 21:25:54,232 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3239 transitions. [2022-07-19 21:25:54,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3239 transitions. [2022-07-19 21:25:54,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:54,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3239 transitions. [2022-07-19 21:25:54,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 231.35714285714286) internal successors, (3239), 14 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 272.0) internal successors, (4080), 15 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,238 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 272.0) internal successors, (4080), 15 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,238 INFO L186 Difference]: Start difference. First operand has 450 places, 610 transitions, 8362 flow. Second operand 14 states and 3239 transitions. [2022-07-19 21:25:54,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 699 transitions, 9404 flow [2022-07-19 21:25:54,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 699 transitions, 9362 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-19 21:25:54,851 INFO L242 Difference]: Finished difference. Result has 468 places, 624 transitions, 8797 flow [2022-07-19 21:25:54,852 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=8314, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8797, PETRI_PLACES=468, PETRI_TRANSITIONS=624} [2022-07-19 21:25:54,852 INFO L279 CegarLoopForPetriNet]: 245 programPoint places, 223 predicate places. [2022-07-19 21:25:54,852 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 624 transitions, 8797 flow [2022-07-19 21:25:54,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,853 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:54,853 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:54,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 21:25:54,853 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:54,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:54,854 INFO L85 PathProgramCache]: Analyzing trace with hash -789420411, now seen corresponding path program 4 times [2022-07-19 21:25:54,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:54,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313567137] [2022-07-19 21:25:54,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:54,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-19 21:25:54,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:54,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313567137] [2022-07-19 21:25:54,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313567137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:54,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:54,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:25:54,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619218902] [2022-07-19 21:25:54,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:54,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:25:54,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:54,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:25:54,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:25:54,950 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 272 [2022-07-19 21:25:54,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 624 transitions, 8797 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:54,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 272 [2022-07-19 21:25:54,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand