./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-match-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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-match-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:25:58,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:25:58,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:25:58,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:25:58,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:25:58,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:25:58,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:25:58,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:25:58,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:25:58,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:25:58,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:25:58,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:25:58,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:25:58,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:25:58,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:25:58,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:25:58,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:25:58,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:25:58,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:25:58,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:25:58,757 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:25:58,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:25:58,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:25:58,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:25:58,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:25:58,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:25:58,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:25:58,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:25:58,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:25:58,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:25:58,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:25:58,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:25:58,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:25:58,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:25:58,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:25:58,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:25:58,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:25:58,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:25:58,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:25:58,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:25:58,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:25:58,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:25:58,777 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:25:58,797 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:25:58,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:25:58,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:25:58,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:25:58,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:25:58,799 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:25:58,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:25:58,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:25:58,799 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:25:58,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:25:58,800 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:25:58,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:25:58,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:25:58,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:25:58,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:25:58,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:25:58,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:25:58,801 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:25:58,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:25:58,802 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:25:58,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:25:58,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:25:58,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:25:58,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:25:58,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:58,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:25:58,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:25:58,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:25:58,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:25:58,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:25:58,803 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:25:58,804 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:25:58,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:25:58,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac [2022-07-19 21:25:58,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:25:59,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:25:59,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:25:59,011 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:25:59,012 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:25:59,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-07-19 21:25:59,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a15e10d9/b740a7e3ca6645249b1a1ce5a9375990/FLAG3f11ec139 [2022-07-19 21:25:59,398 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:25:59,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-07-19 21:25:59,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a15e10d9/b740a7e3ca6645249b1a1ce5a9375990/FLAG3f11ec139 [2022-07-19 21:25:59,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a15e10d9/b740a7e3ca6645249b1a1ce5a9375990 [2022-07-19 21:25:59,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:25:59,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:25:59,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:59,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:25:59,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:25:59,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:59" (1/1) ... [2022-07-19 21:25:59,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b3ae51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:59, skipping insertion in model container [2022-07-19 21:25:59,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:59" (1/1) ... [2022-07-19 21:25:59,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:25:59,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:25:59,557 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-symm.wvr.c[2584,2597] [2022-07-19 21:25:59,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:59,565 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:25:59,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-symm.wvr.c[2584,2597] [2022-07-19 21:25:59,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:59,592 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:25:59,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:59 WrapperNode [2022-07-19 21:25:59,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:59,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:59,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:25:59,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:25:59,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:59" (1/1) ... [2022-07-19 21:25:59,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:59" (1/1) ... [2022-07-19 21:25:59,620 INFO L137 Inliner]: procedures = 22, calls = 27, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 180 [2022-07-19 21:25:59,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:59,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:25:59,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:25:59,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:25:59,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:59" (1/1) ... [2022-07-19 21:25:59,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:59" (1/1) ... [2022-07-19 21:25:59,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:59" (1/1) ... [2022-07-19 21:25:59,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:59" (1/1) ... [2022-07-19 21:25:59,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:59" (1/1) ... [2022-07-19 21:25:59,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:59" (1/1) ... [2022-07-19 21:25:59,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:59" (1/1) ... [2022-07-19 21:25:59,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:25:59,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:25:59,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:25:59,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:25:59,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:59" (1/1) ... [2022-07-19 21:25:59,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:59,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:59,688 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 21:25:59,694 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 21:25:59,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:25:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:25:59,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:25:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:25:59,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:25:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:25:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:25:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:25:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:25:59,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:25:59,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:25:59,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:25:59,718 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 21:25:59,775 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:25:59,776 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:26:00,014 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:26:00,029 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:26:00,029 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:26:00,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:26:00 BoogieIcfgContainer [2022-07-19 21:26:00,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:26:00,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:26:00,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:26:00,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:26:00,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:25:59" (1/3) ... [2022-07-19 21:26:00,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12556f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:26:00, skipping insertion in model container [2022-07-19 21:26:00,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:59" (2/3) ... [2022-07-19 21:26:00,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12556f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:26:00, skipping insertion in model container [2022-07-19 21:26:00,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:26:00" (3/3) ... [2022-07-19 21:26:00,053 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-match-symm.wvr.c [2022-07-19 21:26:00,058 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:26:00,065 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:26:00,065 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:26:00,065 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:26:00,130 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-19 21:26:00,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 240 places, 252 transitions, 520 flow [2022-07-19 21:26:00,279 INFO L129 PetriNetUnfolder]: 19/250 cut-off events. [2022-07-19 21:26:00,279 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:26:00,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 250 events. 19/250 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 275 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2022-07-19 21:26:00,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 252 transitions, 520 flow [2022-07-19 21:26:00,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 241 transitions, 494 flow [2022-07-19 21:26:00,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:26:00,316 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@78e209a5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71616554 [2022-07-19 21:26:00,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:26:00,355 INFO L129 PetriNetUnfolder]: 19/240 cut-off events. [2022-07-19 21:26:00,355 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:26:00,356 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:00,356 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:00,357 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 21:26:00,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:00,360 INFO L85 PathProgramCache]: Analyzing trace with hash -511755063, now seen corresponding path program 1 times [2022-07-19 21:26:00,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:00,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793424552] [2022-07-19 21:26:00,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:00,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:00,726 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 21:26:00,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:00,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793424552] [2022-07-19 21:26:00,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793424552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:00,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:00,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:26:00,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622593619] [2022-07-19 21:26:00,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:00,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:26:00,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:00,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:26:00,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:26:00,762 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-07-19 21:26:00,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 241 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,766 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:00,766 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-07-19 21:26:00,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:00,898 INFO L129 PetriNetUnfolder]: 48/614 cut-off events. [2022-07-19 21:26:00,898 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-07-19 21:26:00,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 614 events. 48/614 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2804 event pairs, 15 based on Foata normal form. 44/596 useless extension candidates. Maximal degree in co-relation 531. Up to 49 conditions per place. [2022-07-19 21:26:00,905 INFO L132 encePairwiseOnDemand]: 235/252 looper letters, 21 selfloop transitions, 2 changer transitions 3/237 dead transitions. [2022-07-19 21:26:00,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 237 transitions, 541 flow [2022-07-19 21:26:00,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:26:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:26:00,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2022-07-19 21:26:00,920 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9537037037037037 [2022-07-19 21:26:00,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2022-07-19 21:26:00,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2022-07-19 21:26:00,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:00,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2022-07-19 21:26:00,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,940 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,941 INFO L186 Difference]: Start difference. First operand has 229 places, 241 transitions, 494 flow. Second operand 3 states and 721 transitions. [2022-07-19 21:26:00,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 237 transitions, 541 flow [2022-07-19 21:26:00,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 237 transitions, 527 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:26:00,958 INFO L242 Difference]: Finished difference. Result has 229 places, 229 transitions, 482 flow [2022-07-19 21:26:00,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=229, PETRI_TRANSITIONS=229} [2022-07-19 21:26:00,962 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 0 predicate places. [2022-07-19 21:26:00,962 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 229 transitions, 482 flow [2022-07-19 21:26:00,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,963 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:00,964 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:00,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:26:00,964 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 21:26:00,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:00,966 INFO L85 PathProgramCache]: Analyzing trace with hash 803898885, now seen corresponding path program 2 times [2022-07-19 21:26:00,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:00,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133977739] [2022-07-19 21:26:00,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:00,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:01,111 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 21:26:01,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:01,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133977739] [2022-07-19 21:26:01,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133977739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:01,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:01,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:26:01,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173744203] [2022-07-19 21:26:01,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:01,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:26:01,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:01,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:26:01,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:26:01,120 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-07-19 21:26:01,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 229 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:01,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-07-19 21:26:01,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:01,222 INFO L129 PetriNetUnfolder]: 45/636 cut-off events. [2022-07-19 21:26:01,226 INFO L130 PetriNetUnfolder]: For 57/74 co-relation queries the response was YES. [2022-07-19 21:26:01,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 636 events. 45/636 cut-off events. For 57/74 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2802 event pairs, 14 based on Foata normal form. 6/602 useless extension candidates. Maximal degree in co-relation 579. Up to 51 conditions per place. [2022-07-19 21:26:01,229 INFO L132 encePairwiseOnDemand]: 246/252 looper letters, 23 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2022-07-19 21:26:01,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 236 transitions, 557 flow [2022-07-19 21:26:01,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:26:01,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:26:01,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2022-07-19 21:26:01,231 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2022-07-19 21:26:01,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2022-07-19 21:26:01,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2022-07-19 21:26:01,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:01,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2022-07-19 21:26:01,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,234 INFO L186 Difference]: Start difference. First operand has 229 places, 229 transitions, 482 flow. Second operand 3 states and 699 transitions. [2022-07-19 21:26:01,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 236 transitions, 557 flow [2022-07-19 21:26:01,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 236 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:26:01,243 INFO L242 Difference]: Finished difference. Result has 229 places, 231 transitions, 508 flow [2022-07-19 21:26:01,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=229, PETRI_TRANSITIONS=231} [2022-07-19 21:26:01,244 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 0 predicate places. [2022-07-19 21:26:01,244 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 231 transitions, 508 flow [2022-07-19 21:26:01,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,245 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:01,245 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:01,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:26:01,245 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 21:26:01,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:01,246 INFO L85 PathProgramCache]: Analyzing trace with hash -823811011, now seen corresponding path program 1 times [2022-07-19 21:26:01,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:01,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355542965] [2022-07-19 21:26:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:01,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:01,443 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 21:26:01,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:01,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355542965] [2022-07-19 21:26:01,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355542965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:01,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:01,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:01,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134218803] [2022-07-19 21:26:01,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:01,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:01,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:01,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:01,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:01,450 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:01,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 231 transitions, 508 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:01,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:01,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:01,786 INFO L129 PetriNetUnfolder]: 137/955 cut-off events. [2022-07-19 21:26:01,787 INFO L130 PetriNetUnfolder]: For 47/55 co-relation queries the response was YES. [2022-07-19 21:26:01,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1381 conditions, 955 events. 137/955 cut-off events. For 47/55 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5273 event pairs, 73 based on Foata normal form. 1/886 useless extension candidates. Maximal degree in co-relation 996. Up to 229 conditions per place. [2022-07-19 21:26:01,792 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 61 selfloop transitions, 5 changer transitions 29/297 dead transitions. [2022-07-19 21:26:01,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 297 transitions, 841 flow [2022-07-19 21:26:01,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:01,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:01,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3840 transitions. [2022-07-19 21:26:01,799 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8465608465608465 [2022-07-19 21:26:01,799 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3840 transitions. [2022-07-19 21:26:01,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3840 transitions. [2022-07-19 21:26:01,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:01,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3840 transitions. [2022-07-19 21:26:01,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 213.33333333333334) internal successors, (3840), 18 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,815 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,815 INFO L186 Difference]: Start difference. First operand has 229 places, 231 transitions, 508 flow. Second operand 18 states and 3840 transitions. [2022-07-19 21:26:01,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 297 transitions, 841 flow [2022-07-19 21:26:01,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 297 transitions, 839 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:26:01,821 INFO L242 Difference]: Finished difference. Result has 261 places, 235 transitions, 577 flow [2022-07-19 21:26:01,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=577, PETRI_PLACES=261, PETRI_TRANSITIONS=235} [2022-07-19 21:26:01,823 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 32 predicate places. [2022-07-19 21:26:01,823 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 235 transitions, 577 flow [2022-07-19 21:26:01,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,825 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:01,825 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:01,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:26:01,825 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 21:26:01,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:01,826 INFO L85 PathProgramCache]: Analyzing trace with hash 106633647, now seen corresponding path program 2 times [2022-07-19 21:26:01,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:01,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035307531] [2022-07-19 21:26:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:01,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:01,972 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 21:26:01,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:01,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035307531] [2022-07-19 21:26:01,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035307531] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:01,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:01,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:01,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9471159] [2022-07-19 21:26:01,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:01,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:01,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:01,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:01,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:01,976 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:01,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 235 transitions, 577 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:01,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:01,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:02,276 INFO L129 PetriNetUnfolder]: 141/1094 cut-off events. [2022-07-19 21:26:02,276 INFO L130 PetriNetUnfolder]: For 696/729 co-relation queries the response was YES. [2022-07-19 21:26:02,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 1094 events. 141/1094 cut-off events. For 696/729 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6470 event pairs, 78 based on Foata normal form. 1/1021 useless extension candidates. Maximal degree in co-relation 2015. Up to 248 conditions per place. [2022-07-19 21:26:02,284 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 76 selfloop transitions, 3 changer transitions 25/306 dead transitions. [2022-07-19 21:26:02,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 306 transitions, 1135 flow [2022-07-19 21:26:02,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:26:02,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:26:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3625 transitions. [2022-07-19 21:26:02,290 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.846171802054155 [2022-07-19 21:26:02,290 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3625 transitions. [2022-07-19 21:26:02,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3625 transitions. [2022-07-19 21:26:02,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:02,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3625 transitions. [2022-07-19 21:26:02,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 213.23529411764707) internal successors, (3625), 17 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,304 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,305 INFO L186 Difference]: Start difference. First operand has 261 places, 235 transitions, 577 flow. Second operand 17 states and 3625 transitions. [2022-07-19 21:26:02,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 306 transitions, 1135 flow [2022-07-19 21:26:02,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 306 transitions, 1081 flow, removed 25 selfloop flow, removed 8 redundant places. [2022-07-19 21:26:02,316 INFO L242 Difference]: Finished difference. Result has 273 places, 237 transitions, 625 flow [2022-07-19 21:26:02,317 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=625, PETRI_PLACES=273, PETRI_TRANSITIONS=237} [2022-07-19 21:26:02,318 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 44 predicate places. [2022-07-19 21:26:02,318 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 237 transitions, 625 flow [2022-07-19 21:26:02,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,321 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:02,321 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:02,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:26:02,321 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 21:26:02,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:02,322 INFO L85 PathProgramCache]: Analyzing trace with hash -468348399, now seen corresponding path program 3 times [2022-07-19 21:26:02,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:02,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027567860] [2022-07-19 21:26:02,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:02,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:02,447 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 21:26:02,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:02,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027567860] [2022-07-19 21:26:02,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027567860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:02,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:02,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:02,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826343777] [2022-07-19 21:26:02,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:02,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:02,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:02,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:02,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:02,451 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:02,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 237 transitions, 625 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:02,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:02,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:02,785 INFO L129 PetriNetUnfolder]: 145/1099 cut-off events. [2022-07-19 21:26:02,785 INFO L130 PetriNetUnfolder]: For 1611/1642 co-relation queries the response was YES. [2022-07-19 21:26:02,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2418 conditions, 1099 events. 145/1099 cut-off events. For 1611/1642 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6513 event pairs, 84 based on Foata normal form. 1/1023 useless extension candidates. Maximal degree in co-relation 2314. Up to 287 conditions per place. [2022-07-19 21:26:02,791 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 46 selfloop transitions, 12 changer transitions 20/280 dead transitions. [2022-07-19 21:26:02,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 280 transitions, 1115 flow [2022-07-19 21:26:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:26:02,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:26:02,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3401 transitions. [2022-07-19 21:26:02,796 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8435019841269841 [2022-07-19 21:26:02,796 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3401 transitions. [2022-07-19 21:26:02,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3401 transitions. [2022-07-19 21:26:02,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:02,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3401 transitions. [2022-07-19 21:26:02,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.5625) internal successors, (3401), 16 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,807 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,807 INFO L186 Difference]: Start difference. First operand has 273 places, 237 transitions, 625 flow. Second operand 16 states and 3401 transitions. [2022-07-19 21:26:02,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 280 transitions, 1115 flow [2022-07-19 21:26:02,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 280 transitions, 1074 flow, removed 19 selfloop flow, removed 9 redundant places. [2022-07-19 21:26:02,817 INFO L242 Difference]: Finished difference. Result has 275 places, 247 transitions, 764 flow [2022-07-19 21:26:02,817 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=764, PETRI_PLACES=275, PETRI_TRANSITIONS=247} [2022-07-19 21:26:02,818 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 46 predicate places. [2022-07-19 21:26:02,818 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 247 transitions, 764 flow [2022-07-19 21:26:02,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,819 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:02,819 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:02,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:26:02,819 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 21:26:02,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:02,820 INFO L85 PathProgramCache]: Analyzing trace with hash -678703279, now seen corresponding path program 4 times [2022-07-19 21:26:02,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:02,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348304950] [2022-07-19 21:26:02,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:02,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:02,913 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 21:26:02,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:02,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348304950] [2022-07-19 21:26:02,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348304950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:02,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:02,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:02,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785662635] [2022-07-19 21:26:02,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:02,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:02,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:02,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:02,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:02,917 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:02,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 247 transitions, 764 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:02,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:02,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:03,181 INFO L129 PetriNetUnfolder]: 151/1128 cut-off events. [2022-07-19 21:26:03,181 INFO L130 PetriNetUnfolder]: For 2074/2133 co-relation queries the response was YES. [2022-07-19 21:26:03,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 1128 events. 151/1128 cut-off events. For 2074/2133 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6788 event pairs, 89 based on Foata normal form. 1/1056 useless extension candidates. Maximal degree in co-relation 2543. Up to 311 conditions per place. [2022-07-19 21:26:03,188 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 49 selfloop transitions, 19 changer transitions 20/290 dead transitions. [2022-07-19 21:26:03,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 290 transitions, 1311 flow [2022-07-19 21:26:03,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:26:03,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:26:03,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2983 transitions. [2022-07-19 21:26:03,193 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8455215419501134 [2022-07-19 21:26:03,193 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2983 transitions. [2022-07-19 21:26:03,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2983 transitions. [2022-07-19 21:26:03,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:03,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2983 transitions. [2022-07-19 21:26:03,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 213.07142857142858) internal successors, (2983), 14 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,203 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,203 INFO L186 Difference]: Start difference. First operand has 275 places, 247 transitions, 764 flow. Second operand 14 states and 2983 transitions. [2022-07-19 21:26:03,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 290 transitions, 1311 flow [2022-07-19 21:26:03,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 290 transitions, 1275 flow, removed 18 selfloop flow, removed 3 redundant places. [2022-07-19 21:26:03,215 INFO L242 Difference]: Finished difference. Result has 288 places, 257 transitions, 932 flow [2022-07-19 21:26:03,232 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=932, PETRI_PLACES=288, PETRI_TRANSITIONS=257} [2022-07-19 21:26:03,234 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 59 predicate places. [2022-07-19 21:26:03,234 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 257 transitions, 932 flow [2022-07-19 21:26:03,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,240 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:03,240 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:03,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:26:03,240 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 21:26:03,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1634795281, now seen corresponding path program 5 times [2022-07-19 21:26:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:03,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289261866] [2022-07-19 21:26:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:03,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:03,384 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 21:26:03,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:03,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289261866] [2022-07-19 21:26:03,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289261866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:03,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:03,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:03,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420954687] [2022-07-19 21:26:03,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:03,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:03,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:03,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:03,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:03,388 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:03,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 257 transitions, 932 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:03,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:03,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:03,697 INFO L129 PetriNetUnfolder]: 148/1127 cut-off events. [2022-07-19 21:26:03,697 INFO L130 PetriNetUnfolder]: For 2892/2949 co-relation queries the response was YES. [2022-07-19 21:26:03,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2870 conditions, 1127 events. 148/1127 cut-off events. For 2892/2949 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6844 event pairs, 82 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 2757. Up to 298 conditions per place. [2022-07-19 21:26:03,706 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 56 selfloop transitions, 16 changer transitions 24/298 dead transitions. [2022-07-19 21:26:03,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 298 transitions, 1570 flow [2022-07-19 21:26:03,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:26:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-19 21:26:03,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3192 transitions. [2022-07-19 21:26:03,710 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-07-19 21:26:03,711 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3192 transitions. [2022-07-19 21:26:03,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3192 transitions. [2022-07-19 21:26:03,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:03,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3192 transitions. [2022-07-19 21:26:03,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.8) internal successors, (3192), 15 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,720 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,720 INFO L186 Difference]: Start difference. First operand has 288 places, 257 transitions, 932 flow. Second operand 15 states and 3192 transitions. [2022-07-19 21:26:03,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 298 transitions, 1570 flow [2022-07-19 21:26:03,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 298 transitions, 1475 flow, removed 38 selfloop flow, removed 6 redundant places. [2022-07-19 21:26:03,735 INFO L242 Difference]: Finished difference. Result has 301 places, 262 transitions, 1016 flow [2022-07-19 21:26:03,735 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1016, PETRI_PLACES=301, PETRI_TRANSITIONS=262} [2022-07-19 21:26:03,736 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 72 predicate places. [2022-07-19 21:26:03,736 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 262 transitions, 1016 flow [2022-07-19 21:26:03,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,737 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:03,737 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:03,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:26:03,737 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 21:26:03,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:03,738 INFO L85 PathProgramCache]: Analyzing trace with hash -67705479, now seen corresponding path program 6 times [2022-07-19 21:26:03,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:03,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685406254] [2022-07-19 21:26:03,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:03,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:03,843 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 21:26:03,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:03,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685406254] [2022-07-19 21:26:03,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685406254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:03,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:03,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:03,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53464291] [2022-07-19 21:26:03,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:03,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:03,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:03,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:03,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:03,846 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:03,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 262 transitions, 1016 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:03,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:03,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:04,099 INFO L129 PetriNetUnfolder]: 142/1116 cut-off events. [2022-07-19 21:26:04,099 INFO L130 PetriNetUnfolder]: For 3368/3439 co-relation queries the response was YES. [2022-07-19 21:26:04,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2860 conditions, 1116 events. 142/1116 cut-off events. For 3368/3439 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6771 event pairs, 84 based on Foata normal form. 7/1046 useless extension candidates. Maximal degree in co-relation 2741. Up to 292 conditions per place. [2022-07-19 21:26:04,106 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 51 selfloop transitions, 11 changer transitions 24/288 dead transitions. [2022-07-19 21:26:04,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 288 transitions, 1438 flow [2022-07-19 21:26:04,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:26:04,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:26:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2769 transitions. [2022-07-19 21:26:04,110 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2022-07-19 21:26:04,110 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2769 transitions. [2022-07-19 21:26:04,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2769 transitions. [2022-07-19 21:26:04,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:04,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2769 transitions. [2022-07-19 21:26:04,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 213.0) internal successors, (2769), 13 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,119 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,119 INFO L186 Difference]: Start difference. First operand has 301 places, 262 transitions, 1016 flow. Second operand 13 states and 2769 transitions. [2022-07-19 21:26:04,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 288 transitions, 1438 flow [2022-07-19 21:26:04,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 288 transitions, 1339 flow, removed 44 selfloop flow, removed 9 redundant places. [2022-07-19 21:26:04,135 INFO L242 Difference]: Finished difference. Result has 300 places, 254 transitions, 886 flow [2022-07-19 21:26:04,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=886, PETRI_PLACES=300, PETRI_TRANSITIONS=254} [2022-07-19 21:26:04,136 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 71 predicate places. [2022-07-19 21:26:04,136 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 254 transitions, 886 flow [2022-07-19 21:26:04,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,137 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:04,137 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:04,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:26:04,137 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 21:26:04,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:04,138 INFO L85 PathProgramCache]: Analyzing trace with hash 32274999, now seen corresponding path program 7 times [2022-07-19 21:26:04,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:04,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867484503] [2022-07-19 21:26:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:04,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:04,225 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 21:26:04,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:04,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867484503] [2022-07-19 21:26:04,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867484503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:04,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:04,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:04,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260937140] [2022-07-19 21:26:04,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:04,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:04,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:04,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:04,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:04,229 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:04,230 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 254 transitions, 886 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:04,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:04,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:04,497 INFO L129 PetriNetUnfolder]: 140/1101 cut-off events. [2022-07-19 21:26:04,497 INFO L130 PetriNetUnfolder]: For 2817/2873 co-relation queries the response was YES. [2022-07-19 21:26:04,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 1101 events. 140/1101 cut-off events. For 2817/2873 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6616 event pairs, 81 based on Foata normal form. 3/1029 useless extension candidates. Maximal degree in co-relation 2628. Up to 286 conditions per place. [2022-07-19 21:26:04,506 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 48 selfloop transitions, 14 changer transitions 23/287 dead transitions. [2022-07-19 21:26:04,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 287 transitions, 1399 flow [2022-07-19 21:26:04,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:26:04,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-19 21:26:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3191 transitions. [2022-07-19 21:26:04,510 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8441798941798941 [2022-07-19 21:26:04,510 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3191 transitions. [2022-07-19 21:26:04,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3191 transitions. [2022-07-19 21:26:04,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:04,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3191 transitions. [2022-07-19 21:26:04,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.73333333333332) internal successors, (3191), 15 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,520 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,520 INFO L186 Difference]: Start difference. First operand has 300 places, 254 transitions, 886 flow. Second operand 15 states and 3191 transitions. [2022-07-19 21:26:04,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 287 transitions, 1399 flow [2022-07-19 21:26:04,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 287 transitions, 1311 flow, removed 27 selfloop flow, removed 11 redundant places. [2022-07-19 21:26:04,534 INFO L242 Difference]: Finished difference. Result has 300 places, 258 transitions, 967 flow [2022-07-19 21:26:04,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=967, PETRI_PLACES=300, PETRI_TRANSITIONS=258} [2022-07-19 21:26:04,535 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 71 predicate places. [2022-07-19 21:26:04,536 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 258 transitions, 967 flow [2022-07-19 21:26:04,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,536 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:04,536 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:04,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:26:04,537 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 21:26:04,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:04,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1584975147, now seen corresponding path program 8 times [2022-07-19 21:26:04,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:04,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278467100] [2022-07-19 21:26:04,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:04,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:04,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:04,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278467100] [2022-07-19 21:26:04,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278467100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:04,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:04,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:04,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066583948] [2022-07-19 21:26:04,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:04,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:04,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:04,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:04,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:04,650 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:04,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 258 transitions, 967 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:04,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:04,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:04,917 INFO L129 PetriNetUnfolder]: 133/1068 cut-off events. [2022-07-19 21:26:04,918 INFO L130 PetriNetUnfolder]: For 2580/2637 co-relation queries the response was YES. [2022-07-19 21:26:04,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2618 conditions, 1068 events. 133/1068 cut-off events. For 2580/2637 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6270 event pairs, 81 based on Foata normal form. 3/996 useless extension candidates. Maximal degree in co-relation 2500. Up to 283 conditions per place. [2022-07-19 21:26:04,926 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 45 selfloop transitions, 4 changer transitions 26/277 dead transitions. [2022-07-19 21:26:04,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 277 transitions, 1266 flow [2022-07-19 21:26:04,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:26:04,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:26:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2975 transitions. [2022-07-19 21:26:04,930 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8432539682539683 [2022-07-19 21:26:04,930 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2975 transitions. [2022-07-19 21:26:04,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2975 transitions. [2022-07-19 21:26:04,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:04,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2975 transitions. [2022-07-19 21:26:04,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.5) internal successors, (2975), 14 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,937 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,937 INFO L186 Difference]: Start difference. First operand has 300 places, 258 transitions, 967 flow. Second operand 14 states and 2975 transitions. [2022-07-19 21:26:04,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 277 transitions, 1266 flow [2022-07-19 21:26:04,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 277 transitions, 1191 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-07-19 21:26:04,951 INFO L242 Difference]: Finished difference. Result has 303 places, 247 transitions, 782 flow [2022-07-19 21:26:04,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=782, PETRI_PLACES=303, PETRI_TRANSITIONS=247} [2022-07-19 21:26:04,952 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 74 predicate places. [2022-07-19 21:26:04,952 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 247 transitions, 782 flow [2022-07-19 21:26:04,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,953 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:04,953 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:04,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:26:04,953 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 21:26:04,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:04,954 INFO L85 PathProgramCache]: Analyzing trace with hash 4897569, now seen corresponding path program 9 times [2022-07-19 21:26:04,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:04,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607737460] [2022-07-19 21:26:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:04,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:05,039 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 21:26:05,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:05,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607737460] [2022-07-19 21:26:05,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607737460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:05,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:05,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:05,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115316892] [2022-07-19 21:26:05,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:05,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:05,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:05,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:05,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:05,042 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:05,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 247 transitions, 782 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:05,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:05,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:05,400 INFO L129 PetriNetUnfolder]: 132/1083 cut-off events. [2022-07-19 21:26:05,400 INFO L130 PetriNetUnfolder]: For 2334/2373 co-relation queries the response was YES. [2022-07-19 21:26:05,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 1083 events. 132/1083 cut-off events. For 2334/2373 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6474 event pairs, 84 based on Foata normal form. 2/1012 useless extension candidates. Maximal degree in co-relation 2494. Up to 293 conditions per place. [2022-07-19 21:26:05,408 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 44 selfloop transitions, 10 changer transitions 26/282 dead transitions. [2022-07-19 21:26:05,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 282 transitions, 1250 flow [2022-07-19 21:26:05,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:26:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:26:05,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3401 transitions. [2022-07-19 21:26:05,413 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8435019841269841 [2022-07-19 21:26:05,413 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3401 transitions. [2022-07-19 21:26:05,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3401 transitions. [2022-07-19 21:26:05,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:05,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3401 transitions. [2022-07-19 21:26:05,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.5625) internal successors, (3401), 16 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,423 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,423 INFO L186 Difference]: Start difference. First operand has 303 places, 247 transitions, 782 flow. Second operand 16 states and 3401 transitions. [2022-07-19 21:26:05,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 282 transitions, 1250 flow [2022-07-19 21:26:05,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 282 transitions, 1136 flow, removed 26 selfloop flow, removed 17 redundant places. [2022-07-19 21:26:05,437 INFO L242 Difference]: Finished difference. Result has 293 places, 248 transitions, 803 flow [2022-07-19 21:26:05,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=803, PETRI_PLACES=293, PETRI_TRANSITIONS=248} [2022-07-19 21:26:05,437 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 64 predicate places. [2022-07-19 21:26:05,437 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 248 transitions, 803 flow [2022-07-19 21:26:05,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,438 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:05,438 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:05,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:26:05,438 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 21:26:05,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:05,439 INFO L85 PathProgramCache]: Analyzing trace with hash 601347723, now seen corresponding path program 10 times [2022-07-19 21:26:05,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:05,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056173512] [2022-07-19 21:26:05,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:05,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:05,538 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 21:26:05,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:05,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056173512] [2022-07-19 21:26:05,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056173512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:05,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:05,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:05,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763967857] [2022-07-19 21:26:05,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:05,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:05,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:05,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:05,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:05,541 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:05,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 248 transitions, 803 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:05,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:05,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:05,771 INFO L129 PetriNetUnfolder]: 127/994 cut-off events. [2022-07-19 21:26:05,771 INFO L130 PetriNetUnfolder]: For 1863/1899 co-relation queries the response was YES. [2022-07-19 21:26:05,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2278 conditions, 994 events. 127/994 cut-off events. For 1863/1899 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5557 event pairs, 84 based on Foata normal form. 2/923 useless extension candidates. Maximal degree in co-relation 2237. Up to 276 conditions per place. [2022-07-19 21:26:05,794 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 39 selfloop transitions, 2 changer transitions 28/269 dead transitions. [2022-07-19 21:26:05,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 269 transitions, 1061 flow [2022-07-19 21:26:05,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:26:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:26:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2976 transitions. [2022-07-19 21:26:05,797 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8435374149659864 [2022-07-19 21:26:05,797 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2976 transitions. [2022-07-19 21:26:05,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2976 transitions. [2022-07-19 21:26:05,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:05,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2976 transitions. [2022-07-19 21:26:05,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.57142857142858) internal successors, (2976), 14 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,805 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,805 INFO L186 Difference]: Start difference. First operand has 293 places, 248 transitions, 803 flow. Second operand 14 states and 2976 transitions. [2022-07-19 21:26:05,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 269 transitions, 1061 flow [2022-07-19 21:26:05,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 269 transitions, 997 flow, removed 24 selfloop flow, removed 12 redundant places. [2022-07-19 21:26:05,815 INFO L242 Difference]: Finished difference. Result has 289 places, 235 transitions, 640 flow [2022-07-19 21:26:05,816 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=640, PETRI_PLACES=289, PETRI_TRANSITIONS=235} [2022-07-19 21:26:05,816 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 60 predicate places. [2022-07-19 21:26:05,816 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 235 transitions, 640 flow [2022-07-19 21:26:05,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,817 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:05,817 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:05,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:26:05,817 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 21:26:05,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:05,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2015398089, now seen corresponding path program 1 times [2022-07-19 21:26:05,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:05,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508278955] [2022-07-19 21:26:05,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:05,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:05,910 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 21:26:05,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:05,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508278955] [2022-07-19 21:26:05,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508278955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:05,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:05,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:05,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745574920] [2022-07-19 21:26:05,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:05,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:05,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:05,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:05,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:05,913 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:05,914 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 235 transitions, 640 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:05,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:05,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:06,127 INFO L129 PetriNetUnfolder]: 158/1047 cut-off events. [2022-07-19 21:26:06,127 INFO L130 PetriNetUnfolder]: For 1870/1889 co-relation queries the response was YES. [2022-07-19 21:26:06,131 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2375 conditions, 1047 events. 158/1047 cut-off events. For 1870/1889 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5878 event pairs, 101 based on Foata normal form. 2/969 useless extension candidates. Maximal degree in co-relation 2339. Up to 307 conditions per place. [2022-07-19 21:26:06,134 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 43 selfloop transitions, 12 changer transitions 15/271 dead transitions. [2022-07-19 21:26:06,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 271 transitions, 1013 flow [2022-07-19 21:26:06,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:26:06,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:26:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2978 transitions. [2022-07-19 21:26:06,137 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8441043083900227 [2022-07-19 21:26:06,137 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2978 transitions. [2022-07-19 21:26:06,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2978 transitions. [2022-07-19 21:26:06,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:06,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2978 transitions. [2022-07-19 21:26:06,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.71428571428572) internal successors, (2978), 14 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,144 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,144 INFO L186 Difference]: Start difference. First operand has 289 places, 235 transitions, 640 flow. Second operand 14 states and 2978 transitions. [2022-07-19 21:26:06,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 271 transitions, 1013 flow [2022-07-19 21:26:06,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 271 transitions, 967 flow, removed 17 selfloop flow, removed 18 redundant places. [2022-07-19 21:26:06,153 INFO L242 Difference]: Finished difference. Result has 274 places, 247 transitions, 769 flow [2022-07-19 21:26:06,153 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=769, PETRI_PLACES=274, PETRI_TRANSITIONS=247} [2022-07-19 21:26:06,154 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 45 predicate places. [2022-07-19 21:26:06,154 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 247 transitions, 769 flow [2022-07-19 21:26:06,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,155 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:06,155 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:06,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:26:06,155 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 21:26:06,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:06,156 INFO L85 PathProgramCache]: Analyzing trace with hash -319056827, now seen corresponding path program 2 times [2022-07-19 21:26:06,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:06,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137998953] [2022-07-19 21:26:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:06,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:06,272 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 21:26:06,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:06,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137998953] [2022-07-19 21:26:06,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137998953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:06,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:06,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:06,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495105103] [2022-07-19 21:26:06,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:06,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:06,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:06,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:06,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:06,274 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:06,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 247 transitions, 769 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:06,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:06,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:06,548 INFO L129 PetriNetUnfolder]: 163/1080 cut-off events. [2022-07-19 21:26:06,548 INFO L130 PetriNetUnfolder]: For 2183/2210 co-relation queries the response was YES. [2022-07-19 21:26:06,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 1080 events. 163/1080 cut-off events. For 2183/2210 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6490 event pairs, 101 based on Foata normal form. 4/1007 useless extension candidates. Maximal degree in co-relation 2656. Up to 284 conditions per place. [2022-07-19 21:26:06,555 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 74 selfloop transitions, 7 changer transitions 24/306 dead transitions. [2022-07-19 21:26:06,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 306 transitions, 1347 flow [2022-07-19 21:26:06,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:26:06,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:26:06,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3625 transitions. [2022-07-19 21:26:06,558 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.846171802054155 [2022-07-19 21:26:06,558 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3625 transitions. [2022-07-19 21:26:06,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3625 transitions. [2022-07-19 21:26:06,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:06,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3625 transitions. [2022-07-19 21:26:06,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 213.23529411764707) internal successors, (3625), 17 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,566 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,566 INFO L186 Difference]: Start difference. First operand has 274 places, 247 transitions, 769 flow. Second operand 17 states and 3625 transitions. [2022-07-19 21:26:06,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 306 transitions, 1347 flow [2022-07-19 21:26:06,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 306 transitions, 1179 flow, removed 84 selfloop flow, removed 4 redundant places. [2022-07-19 21:26:06,578 INFO L242 Difference]: Finished difference. Result has 293 places, 248 transitions, 746 flow [2022-07-19 21:26:06,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=746, PETRI_PLACES=293, PETRI_TRANSITIONS=248} [2022-07-19 21:26:06,579 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 64 predicate places. [2022-07-19 21:26:06,579 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 248 transitions, 746 flow [2022-07-19 21:26:06,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,580 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:06,580 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:06,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:26:06,580 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 21:26:06,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:06,580 INFO L85 PathProgramCache]: Analyzing trace with hash 132623727, now seen corresponding path program 3 times [2022-07-19 21:26:06,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:06,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546493392] [2022-07-19 21:26:06,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:06,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:06,660 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 21:26:06,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:06,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546493392] [2022-07-19 21:26:06,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546493392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:06,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:06,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:06,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611436573] [2022-07-19 21:26:06,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:06,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:06,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:06,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:06,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:06,662 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:06,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 248 transitions, 746 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:06,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:06,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:06,935 INFO L129 PetriNetUnfolder]: 171/1196 cut-off events. [2022-07-19 21:26:06,935 INFO L130 PetriNetUnfolder]: For 2890/2924 co-relation queries the response was YES. [2022-07-19 21:26:06,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 1196 events. 171/1196 cut-off events. For 2890/2924 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7323 event pairs, 105 based on Foata normal form. 3/1118 useless extension candidates. Maximal degree in co-relation 3012. Up to 279 conditions per place. [2022-07-19 21:26:06,944 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 87 selfloop transitions, 12 changer transitions 24/324 dead transitions. [2022-07-19 21:26:06,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 324 transitions, 1518 flow [2022-07-19 21:26:06,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3835 transitions. [2022-07-19 21:26:06,947 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8454585537918872 [2022-07-19 21:26:06,947 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3835 transitions. [2022-07-19 21:26:06,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3835 transitions. [2022-07-19 21:26:06,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:06,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3835 transitions. [2022-07-19 21:26:06,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 213.05555555555554) internal successors, (3835), 18 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,956 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,956 INFO L186 Difference]: Start difference. First operand has 293 places, 248 transitions, 746 flow. Second operand 18 states and 3835 transitions. [2022-07-19 21:26:06,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 324 transitions, 1518 flow [2022-07-19 21:26:07,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 324 transitions, 1444 flow, removed 34 selfloop flow, removed 12 redundant places. [2022-07-19 21:26:07,008 INFO L242 Difference]: Finished difference. Result has 302 places, 253 transitions, 855 flow [2022-07-19 21:26:07,008 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=855, PETRI_PLACES=302, PETRI_TRANSITIONS=253} [2022-07-19 21:26:07,009 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 73 predicate places. [2022-07-19 21:26:07,009 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 253 transitions, 855 flow [2022-07-19 21:26:07,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,009 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:07,010 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:07,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:26:07,010 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 21:26:07,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:07,010 INFO L85 PathProgramCache]: Analyzing trace with hash -714033523, now seen corresponding path program 4 times [2022-07-19 21:26:07,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:07,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702626340] [2022-07-19 21:26:07,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:07,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:07,111 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 21:26:07,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:07,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702626340] [2022-07-19 21:26:07,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702626340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:07,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:07,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:07,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573826171] [2022-07-19 21:26:07,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:07,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:07,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:07,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:07,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:07,114 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:07,115 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 253 transitions, 855 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:07,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:07,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:07,440 INFO L129 PetriNetUnfolder]: 169/1217 cut-off events. [2022-07-19 21:26:07,441 INFO L130 PetriNetUnfolder]: For 3704/3743 co-relation queries the response was YES. [2022-07-19 21:26:07,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3359 conditions, 1217 events. 169/1217 cut-off events. For 3704/3743 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7653 event pairs, 124 based on Foata normal form. 4/1133 useless extension candidates. Maximal degree in co-relation 3313. Up to 363 conditions per place. [2022-07-19 21:26:07,450 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 54 selfloop transitions, 10 changer transitions 20/285 dead transitions. [2022-07-19 21:26:07,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 285 transitions, 1305 flow [2022-07-19 21:26:07,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:26:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:26:07,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3398 transitions. [2022-07-19 21:26:07,454 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8427579365079365 [2022-07-19 21:26:07,454 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3398 transitions. [2022-07-19 21:26:07,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3398 transitions. [2022-07-19 21:26:07,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:07,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3398 transitions. [2022-07-19 21:26:07,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.375) internal successors, (3398), 16 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,464 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,465 INFO L186 Difference]: Start difference. First operand has 302 places, 253 transitions, 855 flow. Second operand 16 states and 3398 transitions. [2022-07-19 21:26:07,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 285 transitions, 1305 flow [2022-07-19 21:26:07,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 285 transitions, 1243 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-07-19 21:26:07,481 INFO L242 Difference]: Finished difference. Result has 308 places, 255 transitions, 898 flow [2022-07-19 21:26:07,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=898, PETRI_PLACES=308, PETRI_TRANSITIONS=255} [2022-07-19 21:26:07,482 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 79 predicate places. [2022-07-19 21:26:07,482 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 255 transitions, 898 flow [2022-07-19 21:26:07,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,483 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:07,483 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:07,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:26:07,485 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 21:26:07,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:07,486 INFO L85 PathProgramCache]: Analyzing trace with hash 885409187, now seen corresponding path program 5 times [2022-07-19 21:26:07,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:07,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972940280] [2022-07-19 21:26:07,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:07,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:07,582 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 21:26:07,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:07,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972940280] [2022-07-19 21:26:07,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972940280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:07,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:07,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:07,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677695018] [2022-07-19 21:26:07,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:07,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:07,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:07,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:07,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:07,585 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:07,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 255 transitions, 898 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:07,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:07,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:07,867 INFO L129 PetriNetUnfolder]: 167/1207 cut-off events. [2022-07-19 21:26:07,867 INFO L130 PetriNetUnfolder]: For 3332/3379 co-relation queries the response was YES. [2022-07-19 21:26:07,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 1207 events. 167/1207 cut-off events. For 3332/3379 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7505 event pairs, 110 based on Foata normal form. 3/1128 useless extension candidates. Maximal degree in co-relation 3269. Up to 329 conditions per place. [2022-07-19 21:26:07,875 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 59 selfloop transitions, 12 changer transitions 20/292 dead transitions. [2022-07-19 21:26:07,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 292 transitions, 1461 flow [2022-07-19 21:26:07,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:26:07,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-19 21:26:07,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3192 transitions. [2022-07-19 21:26:07,878 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-07-19 21:26:07,878 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3192 transitions. [2022-07-19 21:26:07,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3192 transitions. [2022-07-19 21:26:07,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:07,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3192 transitions. [2022-07-19 21:26:07,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.8) internal successors, (3192), 15 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,885 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,885 INFO L186 Difference]: Start difference. First operand has 308 places, 255 transitions, 898 flow. Second operand 15 states and 3192 transitions. [2022-07-19 21:26:07,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 292 transitions, 1461 flow [2022-07-19 21:26:07,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 292 transitions, 1377 flow, removed 32 selfloop flow, removed 10 redundant places. [2022-07-19 21:26:07,899 INFO L242 Difference]: Finished difference. Result has 314 places, 261 transitions, 1005 flow [2022-07-19 21:26:07,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1005, PETRI_PLACES=314, PETRI_TRANSITIONS=261} [2022-07-19 21:26:07,899 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 85 predicate places. [2022-07-19 21:26:07,899 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 261 transitions, 1005 flow [2022-07-19 21:26:07,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,900 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:07,900 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:07,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:26:07,900 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 21:26:07,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:07,900 INFO L85 PathProgramCache]: Analyzing trace with hash -387112815, now seen corresponding path program 6 times [2022-07-19 21:26:07,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:07,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47375611] [2022-07-19 21:26:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:07,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:07,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:07,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47375611] [2022-07-19 21:26:07,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47375611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:07,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:07,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:07,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903920842] [2022-07-19 21:26:07,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:07,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:07,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:07,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:07,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:07,977 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:07,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 261 transitions, 1005 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:07,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:07,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:08,214 INFO L129 PetriNetUnfolder]: 156/1172 cut-off events. [2022-07-19 21:26:08,214 INFO L130 PetriNetUnfolder]: For 3440/3481 co-relation queries the response was YES. [2022-07-19 21:26:08,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3267 conditions, 1172 events. 156/1172 cut-off events. For 3440/3481 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7186 event pairs, 122 based on Foata normal form. 4/1088 useless extension candidates. Maximal degree in co-relation 3214. Up to 363 conditions per place. [2022-07-19 21:26:08,224 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 51 selfloop transitions, 4 changer transitions 24/280 dead transitions. [2022-07-19 21:26:08,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 280 transitions, 1354 flow [2022-07-19 21:26:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:26:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:26:08,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2974 transitions. [2022-07-19 21:26:08,227 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8429705215419501 [2022-07-19 21:26:08,227 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2974 transitions. [2022-07-19 21:26:08,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2974 transitions. [2022-07-19 21:26:08,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:08,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2974 transitions. [2022-07-19 21:26:08,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.42857142857142) internal successors, (2974), 14 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,234 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,234 INFO L186 Difference]: Start difference. First operand has 314 places, 261 transitions, 1005 flow. Second operand 14 states and 2974 transitions. [2022-07-19 21:26:08,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 280 transitions, 1354 flow [2022-07-19 21:26:08,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 280 transitions, 1283 flow, removed 31 selfloop flow, removed 9 redundant places. [2022-07-19 21:26:08,251 INFO L242 Difference]: Finished difference. Result has 314 places, 249 transitions, 824 flow [2022-07-19 21:26:08,252 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=824, PETRI_PLACES=314, PETRI_TRANSITIONS=249} [2022-07-19 21:26:08,252 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 85 predicate places. [2022-07-19 21:26:08,252 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 249 transitions, 824 flow [2022-07-19 21:26:08,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,253 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:08,253 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:08,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:26:08,253 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 21:26:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:08,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1758871115, now seen corresponding path program 7 times [2022-07-19 21:26:08,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:08,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574810416] [2022-07-19 21:26:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:08,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:08,321 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 21:26:08,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:08,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574810416] [2022-07-19 21:26:08,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574810416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:08,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:08,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:08,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803803706] [2022-07-19 21:26:08,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:08,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:08,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:08,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:08,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:08,324 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:08,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 249 transitions, 824 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:08,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:08,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:08,602 INFO L129 PetriNetUnfolder]: 160/1161 cut-off events. [2022-07-19 21:26:08,603 INFO L130 PetriNetUnfolder]: For 3152/3193 co-relation queries the response was YES. [2022-07-19 21:26:08,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 1161 events. 160/1161 cut-off events. For 3152/3193 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7027 event pairs, 113 based on Foata normal form. 3/1084 useless extension candidates. Maximal degree in co-relation 3104. Up to 327 conditions per place. [2022-07-19 21:26:08,611 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 51 selfloop transitions, 16 changer transitions 18/286 dead transitions. [2022-07-19 21:26:08,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 286 transitions, 1351 flow [2022-07-19 21:26:08,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:26:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:26:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3397 transitions. [2022-07-19 21:26:08,614 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8425099206349206 [2022-07-19 21:26:08,614 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3397 transitions. [2022-07-19 21:26:08,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3397 transitions. [2022-07-19 21:26:08,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:08,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3397 transitions. [2022-07-19 21:26:08,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.3125) internal successors, (3397), 16 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,621 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,622 INFO L186 Difference]: Start difference. First operand has 314 places, 249 transitions, 824 flow. Second operand 16 states and 3397 transitions. [2022-07-19 21:26:08,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 286 transitions, 1351 flow [2022-07-19 21:26:08,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 286 transitions, 1254 flow, removed 27 selfloop flow, removed 13 redundant places. [2022-07-19 21:26:08,636 INFO L242 Difference]: Finished difference. Result has 307 places, 258 transitions, 960 flow [2022-07-19 21:26:08,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=960, PETRI_PLACES=307, PETRI_TRANSITIONS=258} [2022-07-19 21:26:08,636 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 78 predicate places. [2022-07-19 21:26:08,636 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 258 transitions, 960 flow [2022-07-19 21:26:08,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,637 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:08,637 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:08,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 21:26:08,637 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 21:26:08,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash 827468711, now seen corresponding path program 8 times [2022-07-19 21:26:08,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:08,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939327370] [2022-07-19 21:26:08,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:08,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:08,721 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 21:26:08,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:08,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939327370] [2022-07-19 21:26:08,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939327370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:08,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:08,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:08,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923232012] [2022-07-19 21:26:08,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:08,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:08,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:08,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:08,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:08,723 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:08,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 258 transitions, 960 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:08,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:08,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:08,973 INFO L129 PetriNetUnfolder]: 156/1152 cut-off events. [2022-07-19 21:26:08,973 INFO L130 PetriNetUnfolder]: For 2624/2665 co-relation queries the response was YES. [2022-07-19 21:26:08,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3046 conditions, 1152 events. 156/1152 cut-off events. For 2624/2665 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6988 event pairs, 112 based on Foata normal form. 3/1072 useless extension candidates. Maximal degree in co-relation 2998. Up to 325 conditions per place. [2022-07-19 21:26:08,982 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 48 selfloop transitions, 17 changer transitions 18/284 dead transitions. [2022-07-19 21:26:08,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 284 transitions, 1391 flow [2022-07-19 21:26:08,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:26:08,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-19 21:26:08,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3189 transitions. [2022-07-19 21:26:08,985 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8436507936507937 [2022-07-19 21:26:08,985 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3189 transitions. [2022-07-19 21:26:08,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3189 transitions. [2022-07-19 21:26:08,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:08,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3189 transitions. [2022-07-19 21:26:08,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.6) internal successors, (3189), 15 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,992 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,992 INFO L186 Difference]: Start difference. First operand has 307 places, 258 transitions, 960 flow. Second operand 15 states and 3189 transitions. [2022-07-19 21:26:08,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 284 transitions, 1391 flow [2022-07-19 21:26:09,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 284 transitions, 1343 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-07-19 21:26:09,007 INFO L242 Difference]: Finished difference. Result has 317 places, 261 transitions, 1044 flow [2022-07-19 21:26:09,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1044, PETRI_PLACES=317, PETRI_TRANSITIONS=261} [2022-07-19 21:26:09,008 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 88 predicate places. [2022-07-19 21:26:09,008 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 261 transitions, 1044 flow [2022-07-19 21:26:09,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,008 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:09,008 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:09,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 21:26:09,009 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 21:26:09,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:09,009 INFO L85 PathProgramCache]: Analyzing trace with hash -985639963, now seen corresponding path program 9 times [2022-07-19 21:26:09,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:09,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592373300] [2022-07-19 21:26:09,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:09,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:09,112 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 21:26:09,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:09,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592373300] [2022-07-19 21:26:09,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592373300] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:09,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:09,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:09,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105538451] [2022-07-19 21:26:09,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:09,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:09,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:09,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:09,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:09,114 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:09,115 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 261 transitions, 1044 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:09,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:09,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:09,378 INFO L129 PetriNetUnfolder]: 153/1143 cut-off events. [2022-07-19 21:26:09,378 INFO L130 PetriNetUnfolder]: For 2797/2838 co-relation queries the response was YES. [2022-07-19 21:26:09,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3049 conditions, 1143 events. 153/1143 cut-off events. For 2797/2838 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6900 event pairs, 111 based on Foata normal form. 3/1065 useless extension candidates. Maximal degree in co-relation 2996. Up to 324 conditions per place. [2022-07-19 21:26:09,386 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 52 selfloop transitions, 8 changer transitions 23/284 dead transitions. [2022-07-19 21:26:09,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 284 transitions, 1375 flow [2022-07-19 21:26:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:26:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:26:09,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2768 transitions. [2022-07-19 21:26:09,388 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8449328449328449 [2022-07-19 21:26:09,389 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2768 transitions. [2022-07-19 21:26:09,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2768 transitions. [2022-07-19 21:26:09,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:09,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2768 transitions. [2022-07-19 21:26:09,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 212.92307692307693) internal successors, (2768), 13 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,395 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,395 INFO L186 Difference]: Start difference. First operand has 317 places, 261 transitions, 1044 flow. Second operand 13 states and 2768 transitions. [2022-07-19 21:26:09,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 284 transitions, 1375 flow [2022-07-19 21:26:09,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 284 transitions, 1303 flow, removed 23 selfloop flow, removed 7 redundant places. [2022-07-19 21:26:09,409 INFO L242 Difference]: Finished difference. Result has 320 places, 253 transitions, 892 flow [2022-07-19 21:26:09,409 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=892, PETRI_PLACES=320, PETRI_TRANSITIONS=253} [2022-07-19 21:26:09,410 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 91 predicate places. [2022-07-19 21:26:09,410 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 253 transitions, 892 flow [2022-07-19 21:26:09,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,411 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:09,411 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:09,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 21:26:09,411 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 21:26:09,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:09,411 INFO L85 PathProgramCache]: Analyzing trace with hash 951573327, now seen corresponding path program 10 times [2022-07-19 21:26:09,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:09,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037051128] [2022-07-19 21:26:09,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:09,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:09,483 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 21:26:09,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:09,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037051128] [2022-07-19 21:26:09,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037051128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:09,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:09,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:26:09,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340677809] [2022-07-19 21:26:09,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:09,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:26:09,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:09,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:26:09,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:26:09,486 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-07-19 21:26:09,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 253 transitions, 892 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:09,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-07-19 21:26:09,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:09,727 INFO L129 PetriNetUnfolder]: 145/1075 cut-off events. [2022-07-19 21:26:09,727 INFO L130 PetriNetUnfolder]: For 2514/2555 co-relation queries the response was YES. [2022-07-19 21:26:09,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2801 conditions, 1075 events. 145/1075 cut-off events. For 2514/2555 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6225 event pairs, 109 based on Foata normal form. 3/997 useless extension candidates. Maximal degree in co-relation 2748. Up to 305 conditions per place. [2022-07-19 21:26:09,736 INFO L132 encePairwiseOnDemand]: 241/252 looper letters, 43 selfloop transitions, 2 changer transitions 26/270 dead transitions. [2022-07-19 21:26:09,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 270 transitions, 1155 flow [2022-07-19 21:26:09,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:26:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:26:09,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2974 transitions. [2022-07-19 21:26:09,738 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8429705215419501 [2022-07-19 21:26:09,738 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2974 transitions. [2022-07-19 21:26:09,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2974 transitions. [2022-07-19 21:26:09,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:09,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2974 transitions. [2022-07-19 21:26:09,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.42857142857142) internal successors, (2974), 14 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,781 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,781 INFO L186 Difference]: Start difference. First operand has 320 places, 253 transitions, 892 flow. Second operand 14 states and 2974 transitions. [2022-07-19 21:26:09,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 270 transitions, 1155 flow [2022-07-19 21:26:09,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 270 transitions, 1087 flow, removed 16 selfloop flow, removed 14 redundant places. [2022-07-19 21:26:09,798 INFO L242 Difference]: Finished difference. Result has 311 places, 240 transitions, 714 flow [2022-07-19 21:26:09,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=714, PETRI_PLACES=311, PETRI_TRANSITIONS=240} [2022-07-19 21:26:09,799 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 82 predicate places. [2022-07-19 21:26:09,799 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 240 transitions, 714 flow [2022-07-19 21:26:09,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,800 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:09,800 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:09,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 21:26:09,800 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 21:26:09,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:09,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1243438433, now seen corresponding path program 1 times [2022-07-19 21:26:09,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:09,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515677135] [2022-07-19 21:26:09,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:09,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:09,839 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 21:26:09,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:09,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515677135] [2022-07-19 21:26:09,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515677135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:09,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:09,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:26:09,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991943073] [2022-07-19 21:26:09,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:09,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:26:09,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:09,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:26:09,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:26:09,843 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-07-19 21:26:09,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 240 transitions, 714 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:09,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-07-19 21:26:09,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:09,925 INFO L129 PetriNetUnfolder]: 42/597 cut-off events. [2022-07-19 21:26:09,925 INFO L130 PetriNetUnfolder]: For 837/861 co-relation queries the response was YES. [2022-07-19 21:26:09,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 597 events. 42/597 cut-off events. For 837/861 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2501 event pairs, 22 based on Foata normal form. 3/568 useless extension candidates. Maximal degree in co-relation 1177. Up to 41 conditions per place. [2022-07-19 21:26:09,930 INFO L132 encePairwiseOnDemand]: 247/252 looper letters, 16 selfloop transitions, 2 changer transitions 12/246 dead transitions. [2022-07-19 21:26:09,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 246 transitions, 783 flow [2022-07-19 21:26:09,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:26:09,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:26:09,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2022-07-19 21:26:09,932 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2022-07-19 21:26:09,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2022-07-19 21:26:09,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2022-07-19 21:26:09,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:09,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2022-07-19 21:26:09,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,934 INFO L186 Difference]: Start difference. First operand has 311 places, 240 transitions, 714 flow. Second operand 3 states and 696 transitions. [2022-07-19 21:26:09,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 246 transitions, 783 flow [2022-07-19 21:26:09,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 246 transitions, 707 flow, removed 31 selfloop flow, removed 22 redundant places. [2022-07-19 21:26:09,940 INFO L242 Difference]: Finished difference. Result has 273 places, 232 transitions, 602 flow [2022-07-19 21:26:09,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=602, PETRI_PLACES=273, PETRI_TRANSITIONS=232} [2022-07-19 21:26:09,944 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 44 predicate places. [2022-07-19 21:26:09,944 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 232 transitions, 602 flow [2022-07-19 21:26:09,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,944 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:09,944 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:09,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 21:26:09,950 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 21:26:09,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:09,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1851538177, now seen corresponding path program 1 times [2022-07-19 21:26:09,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:09,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887575858] [2022-07-19 21:26:09,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:09,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:09,978 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 21:26:09,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:09,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887575858] [2022-07-19 21:26:09,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887575858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:09,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:09,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:26:09,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458123320] [2022-07-19 21:26:09,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:09,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:26:09,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:09,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:26:09,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:26:09,981 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-07-19 21:26:09,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 232 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:09,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-07-19 21:26:09,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:10,030 INFO L129 PetriNetUnfolder]: 25/348 cut-off events. [2022-07-19 21:26:10,030 INFO L130 PetriNetUnfolder]: For 194/195 co-relation queries the response was YES. [2022-07-19 21:26:10,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 348 events. 25/348 cut-off events. For 194/195 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 838 event pairs, 7 based on Foata normal form. 4/329 useless extension candidates. Maximal degree in co-relation 558. Up to 22 conditions per place. [2022-07-19 21:26:10,033 INFO L132 encePairwiseOnDemand]: 248/252 looper letters, 16 selfloop transitions, 2 changer transitions 11/236 dead transitions. [2022-07-19 21:26:10,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 236 transitions, 659 flow [2022-07-19 21:26:10,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:26:10,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:26:10,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2022-07-19 21:26:10,034 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2022-07-19 21:26:10,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2022-07-19 21:26:10,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2022-07-19 21:26:10,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:10,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2022-07-19 21:26:10,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,036 INFO L186 Difference]: Start difference. First operand has 273 places, 232 transitions, 602 flow. Second operand 3 states and 693 transitions. [2022-07-19 21:26:10,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 236 transitions, 659 flow [2022-07-19 21:26:10,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 236 transitions, 609 flow, removed 24 selfloop flow, removed 11 redundant places. [2022-07-19 21:26:10,040 INFO L242 Difference]: Finished difference. Result has 253 places, 223 transitions, 508 flow [2022-07-19 21:26:10,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=253, PETRI_TRANSITIONS=223} [2022-07-19 21:26:10,041 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 24 predicate places. [2022-07-19 21:26:10,041 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 223 transitions, 508 flow [2022-07-19 21:26:10,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,041 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:10,042 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:26:10,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 21:26:10,042 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:10,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:10,042 INFO L85 PathProgramCache]: Analyzing trace with hash -643342495, now seen corresponding path program 1 times [2022-07-19 21:26:10,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:10,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633322783] [2022-07-19 21:26:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:10,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:10,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:10,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633322783] [2022-07-19 21:26:10,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633322783] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:10,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:10,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-19 21:26:10,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710562698] [2022-07-19 21:26:10,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:10,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-19 21:26:10,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:10,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-19 21:26:10,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-19 21:26:10,395 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-19 21:26:10,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 223 transitions, 508 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:10,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-19 21:26:10,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:13,657 INFO L129 PetriNetUnfolder]: 958/4403 cut-off events. [2022-07-19 21:26:13,657 INFO L130 PetriNetUnfolder]: For 603/609 co-relation queries the response was YES. [2022-07-19 21:26:13,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7289 conditions, 4403 events. 958/4403 cut-off events. For 603/609 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 35203 event pairs, 88 based on Foata normal form. 0/4115 useless extension candidates. Maximal degree in co-relation 7268. Up to 291 conditions per place. [2022-07-19 21:26:13,710 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 569 selfloop transitions, 68 changer transitions 0/792 dead transitions. [2022-07-19 21:26:13,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 792 transitions, 2960 flow [2022-07-19 21:26:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-19 21:26:13,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-07-19 21:26:13,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 9755 transitions. [2022-07-19 21:26:13,722 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7303833483078767 [2022-07-19 21:26:13,722 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 9755 transitions. [2022-07-19 21:26:13,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 9755 transitions. [2022-07-19 21:26:13,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:13,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 9755 transitions. [2022-07-19 21:26:13,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 184.0566037735849) internal successors, (9755), 53 states have internal predecessors, (9755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,743 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,743 INFO L186 Difference]: Start difference. First operand has 253 places, 223 transitions, 508 flow. Second operand 53 states and 9755 transitions. [2022-07-19 21:26:13,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 792 transitions, 2960 flow [2022-07-19 21:26:13,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 792 transitions, 2938 flow, removed 11 selfloop flow, removed 7 redundant places. [2022-07-19 21:26:13,758 INFO L242 Difference]: Finished difference. Result has 303 places, 274 transitions, 796 flow [2022-07-19 21:26:13,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=796, PETRI_PLACES=303, PETRI_TRANSITIONS=274} [2022-07-19 21:26:13,758 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 74 predicate places. [2022-07-19 21:26:13,758 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 274 transitions, 796 flow [2022-07-19 21:26:13,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,759 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:13,759 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:13,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 21:26:13,760 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:13,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:13,760 INFO L85 PathProgramCache]: Analyzing trace with hash 214875707, now seen corresponding path program 2 times [2022-07-19 21:26:13,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:13,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525388757] [2022-07-19 21:26:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:13,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:14,098 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 21:26:14,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:14,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525388757] [2022-07-19 21:26:14,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525388757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:14,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:14,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-19 21:26:14,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720108028] [2022-07-19 21:26:14,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:14,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-19 21:26:14,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:14,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-19 21:26:14,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-19 21:26:14,102 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-19 21:26:14,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 274 transitions, 796 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:14,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-19 21:26:14,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:17,307 INFO L129 PetriNetUnfolder]: 1507/7402 cut-off events. [2022-07-19 21:26:17,308 INFO L130 PetriNetUnfolder]: For 1886/1907 co-relation queries the response was YES. [2022-07-19 21:26:17,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13539 conditions, 7402 events. 1507/7402 cut-off events. For 1886/1907 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 68144 event pairs, 597 based on Foata normal form. 1/7080 useless extension candidates. Maximal degree in co-relation 13507. Up to 1160 conditions per place. [2022-07-19 21:26:17,357 INFO L132 encePairwiseOnDemand]: 214/252 looper letters, 463 selfloop transitions, 87 changer transitions 0/705 dead transitions. [2022-07-19 21:26:17,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 705 transitions, 3338 flow [2022-07-19 21:26:17,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-19 21:26:17,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-19 21:26:17,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 8041 transitions. [2022-07-19 21:26:17,362 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7251984126984127 [2022-07-19 21:26:17,362 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 8041 transitions. [2022-07-19 21:26:17,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 8041 transitions. [2022-07-19 21:26:17,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:17,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 8041 transitions. [2022-07-19 21:26:17,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 182.75) internal successors, (8041), 44 states have internal predecessors, (8041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 252.0) internal successors, (11340), 45 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,378 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 252.0) internal successors, (11340), 45 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,378 INFO L186 Difference]: Start difference. First operand has 303 places, 274 transitions, 796 flow. Second operand 44 states and 8041 transitions. [2022-07-19 21:26:17,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 705 transitions, 3338 flow [2022-07-19 21:26:17,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 705 transitions, 3142 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-07-19 21:26:17,393 INFO L242 Difference]: Finished difference. Result has 376 places, 357 transitions, 1468 flow [2022-07-19 21:26:17,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1468, PETRI_PLACES=376, PETRI_TRANSITIONS=357} [2022-07-19 21:26:17,394 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 147 predicate places. [2022-07-19 21:26:17,394 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 357 transitions, 1468 flow [2022-07-19 21:26:17,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,395 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:17,395 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:17,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 21:26:17,395 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:17,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:17,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1848306263, now seen corresponding path program 3 times [2022-07-19 21:26:17,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:17,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815232309] [2022-07-19 21:26:17,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:17,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:17,739 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 21:26:17,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:17,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815232309] [2022-07-19 21:26:17,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815232309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:17,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:17,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-19 21:26:17,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490210375] [2022-07-19 21:26:17,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:17,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-19 21:26:17,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:17,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-19 21:26:17,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-19 21:26:17,743 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-19 21:26:17,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 357 transitions, 1468 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:17,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-19 21:26:17,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:23,939 INFO L129 PetriNetUnfolder]: 2948/15266 cut-off events. [2022-07-19 21:26:23,943 INFO L130 PetriNetUnfolder]: For 12842/12914 co-relation queries the response was YES. [2022-07-19 21:26:24,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31539 conditions, 15266 events. 2948/15266 cut-off events. For 12842/12914 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 172941 event pairs, 993 based on Foata normal form. 9/14713 useless extension candidates. Maximal degree in co-relation 31467. Up to 1763 conditions per place. [2022-07-19 21:26:24,081 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 758 selfloop transitions, 143 changer transitions 0/1056 dead transitions. [2022-07-19 21:26:24,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 1056 transitions, 6357 flow [2022-07-19 21:26:24,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-07-19 21:26:24,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-07-19 21:26:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 11772 transitions. [2022-07-19 21:26:24,088 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7299107142857143 [2022-07-19 21:26:24,088 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 11772 transitions. [2022-07-19 21:26:24,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 11772 transitions. [2022-07-19 21:26:24,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:24,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 11772 transitions. [2022-07-19 21:26:24,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 183.9375) internal successors, (11772), 64 states have internal predecessors, (11772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:24,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 252.0) internal successors, (16380), 65 states have internal predecessors, (16380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:24,112 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 252.0) internal successors, (16380), 65 states have internal predecessors, (16380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:24,112 INFO L186 Difference]: Start difference. First operand has 376 places, 357 transitions, 1468 flow. Second operand 64 states and 11772 transitions. [2022-07-19 21:26:24,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 1056 transitions, 6357 flow [2022-07-19 21:26:24,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 1056 transitions, 6313 flow, removed 22 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:24,184 INFO L242 Difference]: Finished difference. Result has 491 places, 481 transitions, 2723 flow [2022-07-19 21:26:24,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=2723, PETRI_PLACES=491, PETRI_TRANSITIONS=481} [2022-07-19 21:26:24,185 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 262 predicate places. [2022-07-19 21:26:24,185 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 481 transitions, 2723 flow [2022-07-19 21:26:24,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:24,186 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:24,186 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:24,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 21:26:24,186 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:24,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:24,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1038615649, now seen corresponding path program 4 times [2022-07-19 21:26:24,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:24,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925344345] [2022-07-19 21:26:24,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:24,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:24,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:24,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:24,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925344345] [2022-07-19 21:26:24,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925344345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:24,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:24,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-19 21:26:24,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245724077] [2022-07-19 21:26:24,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:24,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-19 21:26:24,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:24,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-19 21:26:24,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-19 21:26:24,538 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-19 21:26:24,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 481 transitions, 2723 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:24,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:24,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-19 21:26:24,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:32,975 INFO L129 PetriNetUnfolder]: 3745/19931 cut-off events. [2022-07-19 21:26:32,975 INFO L130 PetriNetUnfolder]: For 34125/34257 co-relation queries the response was YES. [2022-07-19 21:26:33,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46270 conditions, 19931 events. 3745/19931 cut-off events. For 34125/34257 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 241983 event pairs, 774 based on Foata normal form. 29/19251 useless extension candidates. Maximal degree in co-relation 46145. Up to 2766 conditions per place. [2022-07-19 21:26:33,298 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 869 selfloop transitions, 244 changer transitions 0/1268 dead transitions. [2022-07-19 21:26:33,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 1268 transitions, 10110 flow [2022-07-19 21:26:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-07-19 21:26:33,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2022-07-19 21:26:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 14398 transitions. [2022-07-19 21:26:33,308 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.723226843480008 [2022-07-19 21:26:33,308 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 14398 transitions. [2022-07-19 21:26:33,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 14398 transitions. [2022-07-19 21:26:33,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:33,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 14398 transitions. [2022-07-19 21:26:33,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 182.25316455696202) internal successors, (14398), 79 states have internal predecessors, (14398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 252.0) internal successors, (20160), 80 states have internal predecessors, (20160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,338 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 252.0) internal successors, (20160), 80 states have internal predecessors, (20160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,338 INFO L186 Difference]: Start difference. First operand has 491 places, 481 transitions, 2723 flow. Second operand 79 states and 14398 transitions. [2022-07-19 21:26:33,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 1268 transitions, 10110 flow [2022-07-19 21:26:33,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 1268 transitions, 9594 flow, removed 258 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:33,579 INFO L242 Difference]: Finished difference. Result has 632 places, 602 transitions, 4198 flow [2022-07-19 21:26:33,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=2409, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=4198, PETRI_PLACES=632, PETRI_TRANSITIONS=602} [2022-07-19 21:26:33,583 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 403 predicate places. [2022-07-19 21:26:33,583 INFO L495 AbstractCegarLoop]: Abstraction has has 632 places, 602 transitions, 4198 flow [2022-07-19 21:26:33,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,584 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:33,584 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:33,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 21:26:33,586 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:33,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:33,586 INFO L85 PathProgramCache]: Analyzing trace with hash 249018489, now seen corresponding path program 5 times [2022-07-19 21:26:33,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:33,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207152353] [2022-07-19 21:26:33,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:33,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:33,888 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 21:26:33,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:33,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207152353] [2022-07-19 21:26:33,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207152353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:33,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:33,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-19 21:26:33,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712225927] [2022-07-19 21:26:33,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:33,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-19 21:26:33,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:33,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-19 21:26:33,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-19 21:26:33,900 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-19 21:26:33,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 602 transitions, 4198 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:33,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-19 21:26:33,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:42,888 INFO L129 PetriNetUnfolder]: 3898/22825 cut-off events. [2022-07-19 21:26:42,888 INFO L130 PetriNetUnfolder]: For 56782/56953 co-relation queries the response was YES. [2022-07-19 21:26:43,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55280 conditions, 22825 events. 3898/22825 cut-off events. For 56782/56953 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 284993 event pairs, 725 based on Foata normal form. 29/22155 useless extension candidates. Maximal degree in co-relation 55091. Up to 2581 conditions per place. [2022-07-19 21:26:43,687 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 914 selfloop transitions, 288 changer transitions 0/1357 dead transitions. [2022-07-19 21:26:43,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 1357 transitions, 12752 flow [2022-07-19 21:26:43,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-19 21:26:43,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-07-19 21:26:43,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 9761 transitions. [2022-07-19 21:26:43,779 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7308325846061695 [2022-07-19 21:26:43,779 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 9761 transitions. [2022-07-19 21:26:43,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 9761 transitions. [2022-07-19 21:26:43,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:43,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 9761 transitions. [2022-07-19 21:26:43,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 184.16981132075472) internal successors, (9761), 53 states have internal predecessors, (9761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:43,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:43,798 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:43,799 INFO L186 Difference]: Start difference. First operand has 632 places, 602 transitions, 4198 flow. Second operand 53 states and 9761 transitions. [2022-07-19 21:26:43,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 1357 transitions, 12752 flow [2022-07-19 21:26:44,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 1357 transitions, 11282 flow, removed 283 selfloop flow, removed 11 redundant places. [2022-07-19 21:26:44,209 INFO L242 Difference]: Finished difference. Result has 693 places, 625 transitions, 4451 flow [2022-07-19 21:26:44,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=4451, PETRI_PLACES=693, PETRI_TRANSITIONS=625} [2022-07-19 21:26:44,210 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 464 predicate places. [2022-07-19 21:26:44,210 INFO L495 AbstractCegarLoop]: Abstraction has has 693 places, 625 transitions, 4451 flow [2022-07-19 21:26:44,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:44,211 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:44,211 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:26:44,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 21:26:44,211 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:44,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:44,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1852996547, now seen corresponding path program 6 times [2022-07-19 21:26:44,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:44,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239541086] [2022-07-19 21:26:44,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:44,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:44,534 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 21:26:44,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:44,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239541086] [2022-07-19 21:26:44,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239541086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:44,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:44,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-19 21:26:44,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647479504] [2022-07-19 21:26:44,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:44,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-19 21:26:44,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:44,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-19 21:26:44,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-19 21:26:44,537 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-19 21:26:44,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 625 transitions, 4451 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:44,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:44,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-19 21:26:44,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:54,296 INFO L129 PetriNetUnfolder]: 4330/24467 cut-off events. [2022-07-19 21:26:54,296 INFO L130 PetriNetUnfolder]: For 76056/76226 co-relation queries the response was YES. [2022-07-19 21:26:55,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62513 conditions, 24467 events. 4330/24467 cut-off events. For 76056/76226 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 308246 event pairs, 2555 based on Foata normal form. 25/23615 useless extension candidates. Maximal degree in co-relation 62304. Up to 4853 conditions per place. [2022-07-19 21:26:55,514 INFO L132 encePairwiseOnDemand]: 214/252 looper letters, 788 selfloop transitions, 133 changer transitions 0/1076 dead transitions. [2022-07-19 21:26:55,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 735 places, 1076 transitions, 10622 flow [2022-07-19 21:26:55,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-19 21:26:55,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-07-19 21:26:55,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 7843 transitions. [2022-07-19 21:26:55,519 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7237910668143226 [2022-07-19 21:26:55,519 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 7843 transitions. [2022-07-19 21:26:55,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 7843 transitions. [2022-07-19 21:26:55,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:55,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 7843 transitions. [2022-07-19 21:26:55,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 182.3953488372093) internal successors, (7843), 43 states have internal predecessors, (7843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:55,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 252.0) internal successors, (11088), 44 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:55,533 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 252.0) internal successors, (11088), 44 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:55,533 INFO L186 Difference]: Start difference. First operand has 693 places, 625 transitions, 4451 flow. Second operand 43 states and 7843 transitions. [2022-07-19 21:26:55,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 735 places, 1076 transitions, 10622 flow [2022-07-19 21:26:56,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 703 places, 1076 transitions, 9683 flow, removed 85 selfloop flow, removed 32 redundant places. [2022-07-19 21:26:56,039 INFO L242 Difference]: Finished difference. Result has 739 places, 707 transitions, 5075 flow [2022-07-19 21:26:56,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=3819, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=5075, PETRI_PLACES=739, PETRI_TRANSITIONS=707} [2022-07-19 21:26:56,041 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 510 predicate places. [2022-07-19 21:26:56,041 INFO L495 AbstractCegarLoop]: Abstraction has has 739 places, 707 transitions, 5075 flow [2022-07-19 21:26:56,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:56,041 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:56,042 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:26:56,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 21:26:56,042 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:56,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:56,042 INFO L85 PathProgramCache]: Analyzing trace with hash -623103677, now seen corresponding path program 7 times [2022-07-19 21:26:56,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:56,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865956796] [2022-07-19 21:26:56,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:56,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:56,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:56,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:56,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865956796] [2022-07-19 21:26:56,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865956796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:56,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:56,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-19 21:26:56,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888591125] [2022-07-19 21:26:56,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:56,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-19 21:26:56,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:56,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-19 21:26:56,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-19 21:26:56,484 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-19 21:26:56,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 739 places, 707 transitions, 5075 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:56,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:56,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-19 21:26:56,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:11,865 INFO L129 PetriNetUnfolder]: 5470/30704 cut-off events. [2022-07-19 21:27:11,866 INFO L130 PetriNetUnfolder]: For 111398/111687 co-relation queries the response was YES. [2022-07-19 21:27:13,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81105 conditions, 30704 events. 5470/30704 cut-off events. For 111398/111687 co-relation queries the response was YES. Maximal size of possible extension queue 859. Compared 407728 event pairs, 1853 based on Foata normal form. 52/29634 useless extension candidates. Maximal degree in co-relation 80860. Up to 4738 conditions per place. [2022-07-19 21:27:13,719 INFO L132 encePairwiseOnDemand]: 216/252 looper letters, 1128 selfloop transitions, 382 changer transitions 0/1665 dead transitions. [2022-07-19 21:27:13,719 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 820 places, 1665 transitions, 16938 flow [2022-07-19 21:27:13,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-07-19 21:27:13,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2022-07-19 21:27:13,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 14963 transitions. [2022-07-19 21:27:13,727 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7241095625241967 [2022-07-19 21:27:13,728 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 14963 transitions. [2022-07-19 21:27:13,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 14963 transitions. [2022-07-19 21:27:13,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:13,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 14963 transitions. [2022-07-19 21:27:13,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 182.47560975609755) internal successors, (14963), 82 states have internal predecessors, (14963), 0 states have call successors, (0), 0 states 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 21:27:13,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 252.0) internal successors, (20916), 83 states have internal predecessors, (20916), 0 states have call successors, (0), 0 states 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 21:27:13,755 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 252.0) internal successors, (20916), 83 states have internal predecessors, (20916), 0 states have call successors, (0), 0 states 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 21:27:13,756 INFO L186 Difference]: Start difference. First operand has 739 places, 707 transitions, 5075 flow. Second operand 82 states and 14963 transitions. [2022-07-19 21:27:13,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 820 places, 1665 transitions, 16938 flow [2022-07-19 21:27:14,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 820 places, 1665 transitions, 16648 flow, removed 145 selfloop flow, removed 0 redundant places. [2022-07-19 21:27:14,748 INFO L242 Difference]: Finished difference. Result has 874 places, 822 transitions, 7262 flow [2022-07-19 21:27:14,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=4797, PETRI_DIFFERENCE_MINUEND_PLACES=739, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=7262, PETRI_PLACES=874, PETRI_TRANSITIONS=822} [2022-07-19 21:27:14,750 INFO L279 CegarLoopForPetriNet]: 229 programPoint places, 645 predicate places. [2022-07-19 21:27:14,750 INFO L495 AbstractCegarLoop]: Abstraction has has 874 places, 822 transitions, 7262 flow [2022-07-19 21:27:14,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,751 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:14,751 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:14,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 21:27:14,751 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:14,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:14,752 INFO L85 PathProgramCache]: Analyzing trace with hash 658168653, now seen corresponding path program 8 times [2022-07-19 21:27:14,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:14,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674823524] [2022-07-19 21:27:14,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:14,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:15,095 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 21:27:15,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:15,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674823524] [2022-07-19 21:27:15,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674823524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:15,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:15,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-19 21:27:15,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146383032] [2022-07-19 21:27:15,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:15,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-19 21:27:15,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:15,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-19 21:27:15,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-07-19 21:27:15,098 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-07-19 21:27:15,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 822 transitions, 7262 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:15,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:15,100 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-07-19 21:27:15,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand