./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-sre-subst.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-sre-subst.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 039f5312b62da5ff616f0ade8cc5a2dd494698e7519842b003d8d55f65a5fe6c --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:27:18,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:27:18,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:27:18,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:27:18,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:27:18,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:27:18,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:27:18,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:27:18,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:27:18,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:27:18,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:27:18,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:27:18,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:27:18,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:27:18,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:27:18,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:27:18,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:27:18,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:27:18,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:27:18,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:27:18,634 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:27:18,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:27:18,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:27:18,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:27:18,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:27:18,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:27:18,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:27:18,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:27:18,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:27:18,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:27:18,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:27:18,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:27:18,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:27:18,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:27:18,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:27:18,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:27:18,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:27:18,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:27:18,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:27:18,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:27:18,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:27:18,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:27:18,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:27:18,688 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:27:18,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:27:18,689 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:27:18,689 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:27:18,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:27:18,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:27:18,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:27:18,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:27:18,690 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:27:18,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:27:18,691 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:27:18,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:27:18,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:27:18,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:27:18,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:27:18,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:27:18,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:27:18,692 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:27:18,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:27:18,693 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:27:18,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:27:18,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:27:18,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:27:18,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:27:18,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:27:18,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:27:18,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:27:18,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:27:18,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:27:18,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:27:18,695 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:27:18,696 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:27:18,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:27:18,696 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 039f5312b62da5ff616f0ade8cc5a2dd494698e7519842b003d8d55f65a5fe6c [2022-07-19 21:27:18,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:27:18,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:27:18,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:27:18,914 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:27:18,915 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:27:18,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c [2022-07-19 21:27:18,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3915c2ac8/d3f050e88a974d978dd9cbd0ff86f889/FLAGc80879473 [2022-07-19 21:27:19,387 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:27:19,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c [2022-07-19 21:27:19,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3915c2ac8/d3f050e88a974d978dd9cbd0ff86f889/FLAGc80879473 [2022-07-19 21:27:19,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3915c2ac8/d3f050e88a974d978dd9cbd0ff86f889 [2022-07-19 21:27:19,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:27:19,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:27:19,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:27:19,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:27:19,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:27:19,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:27:19" (1/1) ... [2022-07-19 21:27:19,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4797625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:19, skipping insertion in model container [2022-07-19 21:27:19,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:27:19" (1/1) ... [2022-07-19 21:27:19,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:27:19,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:27:19,630 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-sre-subst.wvr.c[2333,2346] [2022-07-19 21:27:19,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:27:19,645 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:27:19,666 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-sre-subst.wvr.c[2333,2346] [2022-07-19 21:27:19,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:27:19,677 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:27:19,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:19 WrapperNode [2022-07-19 21:27:19,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:27:19,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:27:19,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:27:19,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:27:19,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:19" (1/1) ... [2022-07-19 21:27:19,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:19" (1/1) ... [2022-07-19 21:27:19,707 INFO L137 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2022-07-19 21:27:19,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:27:19,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:27:19,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:27:19,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:27:19,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:19" (1/1) ... [2022-07-19 21:27:19,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:19" (1/1) ... [2022-07-19 21:27:19,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:19" (1/1) ... [2022-07-19 21:27:19,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:19" (1/1) ... [2022-07-19 21:27:19,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:19" (1/1) ... [2022-07-19 21:27:19,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:19" (1/1) ... [2022-07-19 21:27:19,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:19" (1/1) ... [2022-07-19 21:27:19,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:27:19,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:27:19,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:27:19,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:27:19,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:19" (1/1) ... [2022-07-19 21:27:19,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:27:19,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:27:19,769 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 21:27:19,785 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 21:27:19,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:27:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:27:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:27:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:27:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:27:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:27:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:27:19,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:27:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:27:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:27:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:27:19,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:27:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:27:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:27:19,804 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 21:27:19,863 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:27:19,865 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:27:20,015 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:27:20,021 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:27:20,021 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:27:20,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:27:20 BoogieIcfgContainer [2022-07-19 21:27:20,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:27:20,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:27:20,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:27:20,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:27:20,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:27:19" (1/3) ... [2022-07-19 21:27:20,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3768e71a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:27:20, skipping insertion in model container [2022-07-19 21:27:20,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:19" (2/3) ... [2022-07-19 21:27:20,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3768e71a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:27:20, skipping insertion in model container [2022-07-19 21:27:20,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:27:20" (3/3) ... [2022-07-19 21:27:20,040 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-subst.wvr.c [2022-07-19 21:27:20,044 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:27:20,051 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:27:20,051 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:27:20,053 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:27:20,125 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-19 21:27:20,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 126 places, 124 transitions, 272 flow [2022-07-19 21:27:20,209 INFO L129 PetriNetUnfolder]: 8/121 cut-off events. [2022-07-19 21:27:20,210 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:27:20,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 8/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-07-19 21:27:20,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 124 transitions, 272 flow [2022-07-19 21:27:20,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 110 transitions, 238 flow [2022-07-19 21:27:20,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:27:20,229 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@7fb8310, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@26b645f2 [2022-07-19 21:27:20,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:27:20,276 INFO L129 PetriNetUnfolder]: 8/109 cut-off events. [2022-07-19 21:27:20,276 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:27:20,276 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:20,277 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] [2022-07-19 21:27:20,277 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:20,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:20,285 INFO L85 PathProgramCache]: Analyzing trace with hash -2142705332, now seen corresponding path program 1 times [2022-07-19 21:27:20,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:20,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193571654] [2022-07-19 21:27:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:20,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:20,687 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 21:27:20,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:20,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193571654] [2022-07-19 21:27:20,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193571654] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:20,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:20,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:27:20,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943920559] [2022-07-19 21:27:20,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:20,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:27:20,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:20,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:27:20,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:27:20,724 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 124 [2022-07-19 21:27:20,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 97.75) internal successors, (782), 8 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:20,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:20,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 124 [2022-07-19 21:27:20,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:21,016 INFO L129 PetriNetUnfolder]: 133/459 cut-off events. [2022-07-19 21:27:21,017 INFO L130 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-07-19 21:27:21,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 459 events. 133/459 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2277 event pairs, 30 based on Foata normal form. 6/444 useless extension candidates. Maximal degree in co-relation 605. Up to 68 conditions per place. [2022-07-19 21:27:21,026 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 49 selfloop transitions, 17 changer transitions 16/164 dead transitions. [2022-07-19 21:27:21,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 164 transitions, 549 flow [2022-07-19 21:27:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:27:21,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:27:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1324 transitions. [2022-07-19 21:27:21,043 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8213399503722084 [2022-07-19 21:27:21,044 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1324 transitions. [2022-07-19 21:27:21,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1324 transitions. [2022-07-19 21:27:21,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:21,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1324 transitions. [2022-07-19 21:27:21,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 101.84615384615384) internal successors, (1324), 13 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,068 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,070 INFO L186 Difference]: Start difference. First operand has 112 places, 110 transitions, 238 flow. Second operand 13 states and 1324 transitions. [2022-07-19 21:27:21,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 164 transitions, 549 flow [2022-07-19 21:27:21,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 164 transitions, 511 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-19 21:27:21,077 INFO L242 Difference]: Finished difference. Result has 125 places, 120 transitions, 331 flow [2022-07-19 21:27:21,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=331, PETRI_PLACES=125, PETRI_TRANSITIONS=120} [2022-07-19 21:27:21,083 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 13 predicate places. [2022-07-19 21:27:21,083 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 120 transitions, 331 flow [2022-07-19 21:27:21,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 97.75) internal successors, (782), 8 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,084 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:21,084 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] [2022-07-19 21:27:21,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:27:21,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:21,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:21,086 INFO L85 PathProgramCache]: Analyzing trace with hash -141208881, now seen corresponding path program 1 times [2022-07-19 21:27:21,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:21,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517049123] [2022-07-19 21:27:21,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:21,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:21,216 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 21:27:21,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:21,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517049123] [2022-07-19 21:27:21,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517049123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:21,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:21,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:21,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491875216] [2022-07-19 21:27:21,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:21,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:21,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:21,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:21,222 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:21,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 120 transitions, 331 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:21,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:21,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:21,427 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][117], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 9#L54-8true, 18#L70-4true, 63#thread1ENTRYtrue, 165#(not (= (+ ~sponsored_2~0 (* (div ~sponsored_2~0 256) (- 256))) 0)), 7#L48-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-07-19 21:27:21,428 INFO L384 tUnfolder$Statistics]: this new event has 51 ancestors and is not cut-off event [2022-07-19 21:27:21,428 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2022-07-19 21:27:21,428 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2022-07-19 21:27:21,428 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2022-07-19 21:27:21,435 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][117], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 9#L54-8true, 18#L70-4true, 87#L42-2true, 165#(not (= (+ ~sponsored_2~0 (* (div ~sponsored_2~0 256) (- 256))) 0)), 7#L48-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-07-19 21:27:21,436 INFO L384 tUnfolder$Statistics]: this new event has 52 ancestors and is not cut-off event [2022-07-19 21:27:21,436 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-07-19 21:27:21,436 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-07-19 21:27:21,436 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-07-19 21:27:21,439 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][117], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 9#L54-8true, 18#L70-4true, 79#L42true, 165#(not (= (+ ~sponsored_2~0 (* (div ~sponsored_2~0 256) (- 256))) 0)), 7#L48-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-07-19 21:27:21,439 INFO L384 tUnfolder$Statistics]: this new event has 52 ancestors and is not cut-off event [2022-07-19 21:27:21,439 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-07-19 21:27:21,439 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-07-19 21:27:21,439 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-07-19 21:27:21,444 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][117], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 9#L54-8true, 18#L70-4true, 165#(not (= (+ ~sponsored_2~0 (* (div ~sponsored_2~0 256) (- 256))) 0)), 7#L48-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), Black: 132#(= ~result_4~0 0), 129#true, 82#L42-5true, Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-07-19 21:27:21,445 INFO L384 tUnfolder$Statistics]: this new event has 53 ancestors and is not cut-off event [2022-07-19 21:27:21,445 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-07-19 21:27:21,445 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-07-19 21:27:21,445 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-07-19 21:27:21,447 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][117], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 9#L54-8true, 18#L70-4true, 165#(not (= (+ ~sponsored_2~0 (* (div ~sponsored_2~0 256) (- 256))) 0)), 7#L48-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), Black: 132#(= ~result_4~0 0), 129#true, Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 89#L42-3true, Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-07-19 21:27:21,447 INFO L384 tUnfolder$Statistics]: this new event has 53 ancestors and is not cut-off event [2022-07-19 21:27:21,447 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-07-19 21:27:21,447 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-07-19 21:27:21,447 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-07-19 21:27:21,499 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][117], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 113#L71-2true, 9#L54-8true, 165#(not (= (+ ~sponsored_2~0 (* (div ~sponsored_2~0 256) (- 256))) 0)), 7#L48-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-07-19 21:27:21,499 INFO L384 tUnfolder$Statistics]: this new event has 62 ancestors and is not cut-off event [2022-07-19 21:27:21,499 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2022-07-19 21:27:21,499 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2022-07-19 21:27:21,499 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2022-07-19 21:27:21,543 INFO L129 PetriNetUnfolder]: 515/2409 cut-off events. [2022-07-19 21:27:21,543 INFO L130 PetriNetUnfolder]: For 507/569 co-relation queries the response was YES. [2022-07-19 21:27:21,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4379 conditions, 2409 events. 515/2409 cut-off events. For 507/569 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 22359 event pairs, 111 based on Foata normal form. 13/2120 useless extension candidates. Maximal degree in co-relation 4341. Up to 317 conditions per place. [2022-07-19 21:27:21,559 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 55 selfloop transitions, 22 changer transitions 6/179 dead transitions. [2022-07-19 21:27:21,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 179 transitions, 632 flow [2022-07-19 21:27:21,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:27:21,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:27:21,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 667 transitions. [2022-07-19 21:27:21,562 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.896505376344086 [2022-07-19 21:27:21,562 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 667 transitions. [2022-07-19 21:27:21,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 667 transitions. [2022-07-19 21:27:21,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:21,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 667 transitions. [2022-07-19 21:27:21,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.16666666666667) internal successors, (667), 6 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,566 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,566 INFO L186 Difference]: Start difference. First operand has 125 places, 120 transitions, 331 flow. Second operand 6 states and 667 transitions. [2022-07-19 21:27:21,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 179 transitions, 632 flow [2022-07-19 21:27:21,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 179 transitions, 628 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:21,585 INFO L242 Difference]: Finished difference. Result has 126 places, 139 transitions, 487 flow [2022-07-19 21:27:21,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=487, PETRI_PLACES=126, PETRI_TRANSITIONS=139} [2022-07-19 21:27:21,586 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 14 predicate places. [2022-07-19 21:27:21,586 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 139 transitions, 487 flow [2022-07-19 21:27:21,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,586 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:21,587 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] [2022-07-19 21:27:21,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:27:21,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:21,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:21,589 INFO L85 PathProgramCache]: Analyzing trace with hash -290271799, now seen corresponding path program 2 times [2022-07-19 21:27:21,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:21,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279579751] [2022-07-19 21:27:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:21,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:21,816 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 21:27:21,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:21,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279579751] [2022-07-19 21:27:21,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279579751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:21,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:21,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:21,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891308998] [2022-07-19 21:27:21,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:21,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:21,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:21,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:21,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:21,819 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:21,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 139 transitions, 487 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:21,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:21,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:22,276 INFO L129 PetriNetUnfolder]: 625/3071 cut-off events. [2022-07-19 21:27:22,276 INFO L130 PetriNetUnfolder]: For 1476/1588 co-relation queries the response was YES. [2022-07-19 21:27:22,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6323 conditions, 3071 events. 625/3071 cut-off events. For 1476/1588 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 30314 event pairs, 133 based on Foata normal form. 60/2978 useless extension candidates. Maximal degree in co-relation 5186. Up to 383 conditions per place. [2022-07-19 21:27:22,299 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 88 selfloop transitions, 29 changer transitions 10/219 dead transitions. [2022-07-19 21:27:22,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 219 transitions, 1111 flow [2022-07-19 21:27:22,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:27:22,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:27:22,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 773 transitions. [2022-07-19 21:27:22,302 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8905529953917051 [2022-07-19 21:27:22,302 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 773 transitions. [2022-07-19 21:27:22,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 773 transitions. [2022-07-19 21:27:22,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:22,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 773 transitions. [2022-07-19 21:27:22,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.42857142857143) internal successors, (773), 7 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,307 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,307 INFO L186 Difference]: Start difference. First operand has 126 places, 139 transitions, 487 flow. Second operand 7 states and 773 transitions. [2022-07-19 21:27:22,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 219 transitions, 1111 flow [2022-07-19 21:27:22,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 219 transitions, 1111 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:27:22,324 INFO L242 Difference]: Finished difference. Result has 138 places, 156 transitions, 755 flow [2022-07-19 21:27:22,324 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=755, PETRI_PLACES=138, PETRI_TRANSITIONS=156} [2022-07-19 21:27:22,326 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 26 predicate places. [2022-07-19 21:27:22,326 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 156 transitions, 755 flow [2022-07-19 21:27:22,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,326 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:22,327 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] [2022-07-19 21:27:22,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:27:22,327 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:22,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:22,328 INFO L85 PathProgramCache]: Analyzing trace with hash -700344827, now seen corresponding path program 3 times [2022-07-19 21:27:22,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:22,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346941264] [2022-07-19 21:27:22,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:22,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:22,481 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 21:27:22,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:22,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346941264] [2022-07-19 21:27:22,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346941264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:22,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:22,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:22,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808818031] [2022-07-19 21:27:22,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:22,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:22,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:22,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:22,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:22,485 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:22,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 156 transitions, 755 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:22,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:22,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:22,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:22,980 INFO L129 PetriNetUnfolder]: 647/3871 cut-off events. [2022-07-19 21:27:22,980 INFO L130 PetriNetUnfolder]: For 3403/3539 co-relation queries the response was YES. [2022-07-19 21:27:23,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8577 conditions, 3871 events. 647/3871 cut-off events. For 3403/3539 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 41196 event pairs, 175 based on Foata normal form. 37/3738 useless extension candidates. Maximal degree in co-relation 7135. Up to 491 conditions per place. [2022-07-19 21:27:23,033 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 88 selfloop transitions, 46 changer transitions 5/231 dead transitions. [2022-07-19 21:27:23,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 231 transitions, 1518 flow [2022-07-19 21:27:23,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:27:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:27:23,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 770 transitions. [2022-07-19 21:27:23,036 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2022-07-19 21:27:23,036 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 770 transitions. [2022-07-19 21:27:23,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 770 transitions. [2022-07-19 21:27:23,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:23,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 770 transitions. [2022-07-19 21:27:23,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,041 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,042 INFO L186 Difference]: Start difference. First operand has 138 places, 156 transitions, 755 flow. Second operand 7 states and 770 transitions. [2022-07-19 21:27:23,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 231 transitions, 1518 flow [2022-07-19 21:27:23,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 231 transitions, 1516 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:23,121 INFO L242 Difference]: Finished difference. Result has 148 places, 178 transitions, 1147 flow [2022-07-19 21:27:23,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1147, PETRI_PLACES=148, PETRI_TRANSITIONS=178} [2022-07-19 21:27:23,123 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 36 predicate places. [2022-07-19 21:27:23,123 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 178 transitions, 1147 flow [2022-07-19 21:27:23,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,123 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:23,123 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] [2022-07-19 21:27:23,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:27:23,124 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:23,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:23,124 INFO L85 PathProgramCache]: Analyzing trace with hash -620484305, now seen corresponding path program 4 times [2022-07-19 21:27:23,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:23,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570736964] [2022-07-19 21:27:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:23,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:23,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:23,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:23,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570736964] [2022-07-19 21:27:23,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570736964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:23,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:23,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:23,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239895419] [2022-07-19 21:27:23,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:23,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:23,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:23,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:23,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:23,184 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:23,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 178 transitions, 1147 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:23,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:23,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:23,597 INFO L129 PetriNetUnfolder]: 619/3913 cut-off events. [2022-07-19 21:27:23,597 INFO L130 PetriNetUnfolder]: For 4898/5092 co-relation queries the response was YES. [2022-07-19 21:27:23,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8864 conditions, 3913 events. 619/3913 cut-off events. For 4898/5092 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 41982 event pairs, 139 based on Foata normal form. 63/3774 useless extension candidates. Maximal degree in co-relation 6641. Up to 472 conditions per place. [2022-07-19 21:27:23,629 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 118 selfloop transitions, 31 changer transitions 1/242 dead transitions. [2022-07-19 21:27:23,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 242 transitions, 2037 flow [2022-07-19 21:27:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:23,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:23,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-07-19 21:27:23,632 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2022-07-19 21:27:23,632 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-07-19 21:27:23,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-07-19 21:27:23,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:23,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-07-19 21:27:23,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,635 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,635 INFO L186 Difference]: Start difference. First operand has 148 places, 178 transitions, 1147 flow. Second operand 5 states and 548 transitions. [2022-07-19 21:27:23,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 242 transitions, 2037 flow [2022-07-19 21:27:23,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 242 transitions, 2037 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:27:23,652 INFO L242 Difference]: Finished difference. Result has 156 places, 197 transitions, 1531 flow [2022-07-19 21:27:23,653 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1531, PETRI_PLACES=156, PETRI_TRANSITIONS=197} [2022-07-19 21:27:23,653 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 44 predicate places. [2022-07-19 21:27:23,653 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 197 transitions, 1531 flow [2022-07-19 21:27:23,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,654 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:23,654 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] [2022-07-19 21:27:23,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:27:23,654 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:23,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:23,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1940734035, now seen corresponding path program 1 times [2022-07-19 21:27:23,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:23,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258869710] [2022-07-19 21:27:23,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:23,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:23,739 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 21:27:23,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:23,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258869710] [2022-07-19 21:27:23,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258869710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:23,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:23,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:23,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243119937] [2022-07-19 21:27:23,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:23,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:23,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:23,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:23,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:23,741 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:23,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 197 transitions, 1531 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:23,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:23,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:24,316 INFO L129 PetriNetUnfolder]: 660/4194 cut-off events. [2022-07-19 21:27:24,316 INFO L130 PetriNetUnfolder]: For 7652/7831 co-relation queries the response was YES. [2022-07-19 21:27:24,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10136 conditions, 4194 events. 660/4194 cut-off events. For 7652/7831 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 46404 event pairs, 151 based on Foata normal form. 38/4044 useless extension candidates. Maximal degree in co-relation 7778. Up to 494 conditions per place. [2022-07-19 21:27:24,347 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 103 selfloop transitions, 77 changer transitions 2/274 dead transitions. [2022-07-19 21:27:24,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 274 transitions, 2644 flow [2022-07-19 21:27:24,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:27:24,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:27:24,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-07-19 21:27:24,349 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-07-19 21:27:24,349 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-07-19 21:27:24,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-07-19 21:27:24,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:24,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-07-19 21:27:24,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,353 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,353 INFO L186 Difference]: Start difference. First operand has 156 places, 197 transitions, 1531 flow. Second operand 7 states and 769 transitions. [2022-07-19 21:27:24,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 274 transitions, 2644 flow [2022-07-19 21:27:24,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 274 transitions, 2642 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-07-19 21:27:24,437 INFO L242 Difference]: Finished difference. Result has 168 places, 230 transitions, 2315 flow [2022-07-19 21:27:24,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1529, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2315, PETRI_PLACES=168, PETRI_TRANSITIONS=230} [2022-07-19 21:27:24,438 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 56 predicate places. [2022-07-19 21:27:24,438 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 230 transitions, 2315 flow [2022-07-19 21:27:24,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,439 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:24,439 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] [2022-07-19 21:27:24,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:27:24,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:24,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:24,439 INFO L85 PathProgramCache]: Analyzing trace with hash -741378095, now seen corresponding path program 5 times [2022-07-19 21:27:24,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:24,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282090800] [2022-07-19 21:27:24,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:24,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:24,522 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 21:27:24,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:24,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282090800] [2022-07-19 21:27:24,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282090800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:24,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:24,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:24,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809412977] [2022-07-19 21:27:24,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:24,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:24,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:24,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:24,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:24,525 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:24,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 230 transitions, 2315 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:24,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:24,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:25,010 INFO L129 PetriNetUnfolder]: 621/3968 cut-off events. [2022-07-19 21:27:25,011 INFO L130 PetriNetUnfolder]: For 10129/10269 co-relation queries the response was YES. [2022-07-19 21:27:25,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10188 conditions, 3968 events. 621/3968 cut-off events. For 10129/10269 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 42846 event pairs, 153 based on Foata normal form. 46/3842 useless extension candidates. Maximal degree in co-relation 8075. Up to 464 conditions per place. [2022-07-19 21:27:25,037 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 111 selfloop transitions, 80 changer transitions 2/285 dead transitions. [2022-07-19 21:27:25,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 285 transitions, 3167 flow [2022-07-19 21:27:25,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:27:25,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:27:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2022-07-19 21:27:25,039 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8894009216589862 [2022-07-19 21:27:25,039 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2022-07-19 21:27:25,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2022-07-19 21:27:25,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:25,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2022-07-19 21:27:25,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,043 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,043 INFO L186 Difference]: Start difference. First operand has 168 places, 230 transitions, 2315 flow. Second operand 7 states and 772 transitions. [2022-07-19 21:27:25,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 285 transitions, 3167 flow [2022-07-19 21:27:25,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 285 transitions, 3137 flow, removed 15 selfloop flow, removed 0 redundant places. [2022-07-19 21:27:25,077 INFO L242 Difference]: Finished difference. Result has 178 places, 236 transitions, 2676 flow [2022-07-19 21:27:25,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2287, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2676, PETRI_PLACES=178, PETRI_TRANSITIONS=236} [2022-07-19 21:27:25,078 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 66 predicate places. [2022-07-19 21:27:25,078 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 236 transitions, 2676 flow [2022-07-19 21:27:25,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,079 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:25,079 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] [2022-07-19 21:27:25,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:27:25,079 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:25,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:25,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1329828005, now seen corresponding path program 1 times [2022-07-19 21:27:25,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:25,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163291301] [2022-07-19 21:27:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:25,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:25,161 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 21:27:25,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:25,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163291301] [2022-07-19 21:27:25,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163291301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:25,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:25,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:25,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537977104] [2022-07-19 21:27:25,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:25,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:25,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:25,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:25,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:25,164 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:25,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 236 transitions, 2676 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:25,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:25,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:25,757 INFO L129 PetriNetUnfolder]: 662/4665 cut-off events. [2022-07-19 21:27:25,757 INFO L130 PetriNetUnfolder]: For 14153/14295 co-relation queries the response was YES. [2022-07-19 21:27:25,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11978 conditions, 4665 events. 662/4665 cut-off events. For 14153/14295 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 53306 event pairs, 165 based on Foata normal form. 65/4536 useless extension candidates. Maximal degree in co-relation 9689. Up to 506 conditions per place. [2022-07-19 21:27:25,798 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 127 selfloop transitions, 89 changer transitions 1/309 dead transitions. [2022-07-19 21:27:25,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 309 transitions, 3957 flow [2022-07-19 21:27:25,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:27:25,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:27:25,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-07-19 21:27:25,801 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-07-19 21:27:25,801 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-07-19 21:27:25,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-07-19 21:27:25,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:25,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-07-19 21:27:25,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,804 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,805 INFO L186 Difference]: Start difference. First operand has 178 places, 236 transitions, 2676 flow. Second operand 7 states and 769 transitions. [2022-07-19 21:27:25,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 309 transitions, 3957 flow [2022-07-19 21:27:25,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 309 transitions, 3909 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:25,862 INFO L242 Difference]: Finished difference. Result has 188 places, 257 transitions, 3411 flow [2022-07-19 21:27:25,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3411, PETRI_PLACES=188, PETRI_TRANSITIONS=257} [2022-07-19 21:27:25,863 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 76 predicate places. [2022-07-19 21:27:25,863 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 257 transitions, 3411 flow [2022-07-19 21:27:25,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,864 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:25,864 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] [2022-07-19 21:27:25,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:27:25,864 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:25,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:25,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1005862623, now seen corresponding path program 2 times [2022-07-19 21:27:25,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:25,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880911934] [2022-07-19 21:27:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:25,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:25,914 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 21:27:25,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:25,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880911934] [2022-07-19 21:27:25,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880911934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:25,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:25,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:25,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282912236] [2022-07-19 21:27:25,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:25,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:25,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:25,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:25,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:25,917 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:25,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 257 transitions, 3411 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:25,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:25,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:26,494 INFO L129 PetriNetUnfolder]: 669/4799 cut-off events. [2022-07-19 21:27:26,494 INFO L130 PetriNetUnfolder]: For 18452/18622 co-relation queries the response was YES. [2022-07-19 21:27:26,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12790 conditions, 4799 events. 669/4799 cut-off events. For 18452/18622 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 55248 event pairs, 179 based on Foata normal form. 67/4649 useless extension candidates. Maximal degree in co-relation 10363. Up to 536 conditions per place. [2022-07-19 21:27:26,523 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 156 selfloop transitions, 46 changer transitions 3/297 dead transitions. [2022-07-19 21:27:26,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 297 transitions, 4169 flow [2022-07-19 21:27:26,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:26,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:26,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2022-07-19 21:27:26,525 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8951612903225806 [2022-07-19 21:27:26,526 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2022-07-19 21:27:26,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2022-07-19 21:27:26,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:26,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2022-07-19 21:27:26,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,528 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,528 INFO L186 Difference]: Start difference. First operand has 188 places, 257 transitions, 3411 flow. Second operand 5 states and 555 transitions. [2022-07-19 21:27:26,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 297 transitions, 4169 flow [2022-07-19 21:27:26,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 297 transitions, 4151 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-07-19 21:27:26,589 INFO L242 Difference]: Finished difference. Result has 196 places, 266 transitions, 3667 flow [2022-07-19 21:27:26,589 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3197, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3667, PETRI_PLACES=196, PETRI_TRANSITIONS=266} [2022-07-19 21:27:26,590 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 84 predicate places. [2022-07-19 21:27:26,590 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 266 transitions, 3667 flow [2022-07-19 21:27:26,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,590 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:26,590 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] [2022-07-19 21:27:26,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:27:26,591 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:26,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:26,591 INFO L85 PathProgramCache]: Analyzing trace with hash 900386103, now seen corresponding path program 1 times [2022-07-19 21:27:26,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:26,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951306590] [2022-07-19 21:27:26,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:26,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:26,640 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 21:27:26,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:26,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951306590] [2022-07-19 21:27:26,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951306590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:26,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:26,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:26,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531187908] [2022-07-19 21:27:26,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:26,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:26,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:26,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:26,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:26,643 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:26,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 266 transitions, 3667 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:26,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:26,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:27,156 INFO L129 PetriNetUnfolder]: 599/4394 cut-off events. [2022-07-19 21:27:27,156 INFO L130 PetriNetUnfolder]: For 18496/18640 co-relation queries the response was YES. [2022-07-19 21:27:27,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12038 conditions, 4394 events. 599/4394 cut-off events. For 18496/18640 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 49660 event pairs, 167 based on Foata normal form. 60/4264 useless extension candidates. Maximal degree in co-relation 9910. Up to 451 conditions per place. [2022-07-19 21:27:27,193 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 162 selfloop transitions, 64 changer transitions 9/327 dead transitions. [2022-07-19 21:27:27,193 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 327 transitions, 4835 flow [2022-07-19 21:27:27,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:27:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:27:27,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 768 transitions. [2022-07-19 21:27:27,195 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8847926267281107 [2022-07-19 21:27:27,195 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 768 transitions. [2022-07-19 21:27:27,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 768 transitions. [2022-07-19 21:27:27,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:27,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 768 transitions. [2022-07-19 21:27:27,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.71428571428571) internal successors, (768), 7 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,198 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,199 INFO L186 Difference]: Start difference. First operand has 196 places, 266 transitions, 3667 flow. Second operand 7 states and 768 transitions. [2022-07-19 21:27:27,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 327 transitions, 4835 flow [2022-07-19 21:27:27,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 327 transitions, 4829 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-07-19 21:27:27,267 INFO L242 Difference]: Finished difference. Result has 206 places, 276 transitions, 4084 flow [2022-07-19 21:27:27,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3591, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4084, PETRI_PLACES=206, PETRI_TRANSITIONS=276} [2022-07-19 21:27:27,268 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 94 predicate places. [2022-07-19 21:27:27,268 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 276 transitions, 4084 flow [2022-07-19 21:27:27,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,268 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:27,269 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] [2022-07-19 21:27:27,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:27:27,269 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:27,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:27,269 INFO L85 PathProgramCache]: Analyzing trace with hash 341613273, now seen corresponding path program 2 times [2022-07-19 21:27:27,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:27,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109479293] [2022-07-19 21:27:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:27,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:27,359 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 21:27:27,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:27,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109479293] [2022-07-19 21:27:27,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109479293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:27,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:27,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:27,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835323720] [2022-07-19 21:27:27,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:27,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:27,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:27,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:27,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:27,366 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:27,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 276 transitions, 4084 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:27,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:27,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:28,011 INFO L129 PetriNetUnfolder]: 599/4452 cut-off events. [2022-07-19 21:27:28,011 INFO L130 PetriNetUnfolder]: For 18519/18668 co-relation queries the response was YES. [2022-07-19 21:27:28,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12375 conditions, 4452 events. 599/4452 cut-off events. For 18519/18668 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 50220 event pairs, 146 based on Foata normal form. 41/4293 useless extension candidates. Maximal degree in co-relation 10030. Up to 487 conditions per place. [2022-07-19 21:27:28,053 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 163 selfloop transitions, 68 changer transitions 3/326 dead transitions. [2022-07-19 21:27:28,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 326 transitions, 5084 flow [2022-07-19 21:27:28,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:27:28,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:27:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 763 transitions. [2022-07-19 21:27:28,055 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2022-07-19 21:27:28,055 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 763 transitions. [2022-07-19 21:27:28,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 763 transitions. [2022-07-19 21:27:28,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:28,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 763 transitions. [2022-07-19 21:27:28,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,058 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,058 INFO L186 Difference]: Start difference. First operand has 206 places, 276 transitions, 4084 flow. Second operand 7 states and 763 transitions. [2022-07-19 21:27:28,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 326 transitions, 5084 flow [2022-07-19 21:27:28,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 326 transitions, 5037 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:28,145 INFO L242 Difference]: Finished difference. Result has 214 places, 282 transitions, 4341 flow [2022-07-19 21:27:28,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4005, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4341, PETRI_PLACES=214, PETRI_TRANSITIONS=282} [2022-07-19 21:27:28,147 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 102 predicate places. [2022-07-19 21:27:28,147 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 282 transitions, 4341 flow [2022-07-19 21:27:28,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,148 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:28,148 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:28,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:27:28,148 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:28,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:28,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1167538681, now seen corresponding path program 3 times [2022-07-19 21:27:28,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:28,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292134427] [2022-07-19 21:27:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:28,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:28,225 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 21:27:28,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:28,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292134427] [2022-07-19 21:27:28,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292134427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:28,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:28,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:27:28,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15357083] [2022-07-19 21:27:28,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:28,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:27:28,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:28,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:27:28,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:27:28,227 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:28,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 282 transitions, 4341 flow. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:28,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:28,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:28,814 INFO L129 PetriNetUnfolder]: 648/5090 cut-off events. [2022-07-19 21:27:28,814 INFO L130 PetriNetUnfolder]: For 23693/23825 co-relation queries the response was YES. [2022-07-19 21:27:28,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14137 conditions, 5090 events. 648/5090 cut-off events. For 23693/23825 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 59671 event pairs, 202 based on Foata normal form. 56/4923 useless extension candidates. Maximal degree in co-relation 12344. Up to 501 conditions per place. [2022-07-19 21:27:28,855 INFO L132 encePairwiseOnDemand]: 118/124 looper letters, 244 selfloop transitions, 26 changer transitions 5/367 dead transitions. [2022-07-19 21:27:28,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 367 transitions, 6485 flow [2022-07-19 21:27:28,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 21:27:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-19 21:27:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 443 transitions. [2022-07-19 21:27:28,857 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8931451612903226 [2022-07-19 21:27:28,857 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 443 transitions. [2022-07-19 21:27:28,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 443 transitions. [2022-07-19 21:27:28,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:28,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 443 transitions. [2022-07-19 21:27:28,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,859 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,859 INFO L186 Difference]: Start difference. First operand has 214 places, 282 transitions, 4341 flow. Second operand 4 states and 443 transitions. [2022-07-19 21:27:28,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 367 transitions, 6485 flow [2022-07-19 21:27:28,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 367 transitions, 6411 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:28,947 INFO L242 Difference]: Finished difference. Result has 219 places, 297 transitions, 4670 flow [2022-07-19 21:27:28,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4237, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4670, PETRI_PLACES=219, PETRI_TRANSITIONS=297} [2022-07-19 21:27:28,948 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 107 predicate places. [2022-07-19 21:27:28,948 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 297 transitions, 4670 flow [2022-07-19 21:27:28,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,948 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:28,949 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] [2022-07-19 21:27:28,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:27:28,949 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:28,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:28,949 INFO L85 PathProgramCache]: Analyzing trace with hash -783340119, now seen corresponding path program 2 times [2022-07-19 21:27:28,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:28,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966332739] [2022-07-19 21:27:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:28,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:29,040 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 21:27:29,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:29,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966332739] [2022-07-19 21:27:29,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966332739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:29,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:29,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:29,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70037037] [2022-07-19 21:27:29,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:29,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:29,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:29,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:29,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:29,043 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:29,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 297 transitions, 4670 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:29,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:29,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:29,729 INFO L129 PetriNetUnfolder]: 697/5537 cut-off events. [2022-07-19 21:27:29,730 INFO L130 PetriNetUnfolder]: For 25520/25680 co-relation queries the response was YES. [2022-07-19 21:27:29,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15367 conditions, 5537 events. 697/5537 cut-off events. For 25520/25680 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 66470 event pairs, 258 based on Foata normal form. 39/5340 useless extension candidates. Maximal degree in co-relation 13388. Up to 874 conditions per place. [2022-07-19 21:27:29,776 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 211 selfloop transitions, 32 changer transitions 2/337 dead transitions. [2022-07-19 21:27:29,776 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 337 transitions, 5774 flow [2022-07-19 21:27:29,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 539 transitions. [2022-07-19 21:27:29,778 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8693548387096774 [2022-07-19 21:27:29,778 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 539 transitions. [2022-07-19 21:27:29,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 539 transitions. [2022-07-19 21:27:29,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:29,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 539 transitions. [2022-07-19 21:27:29,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,780 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,780 INFO L186 Difference]: Start difference. First operand has 219 places, 297 transitions, 4670 flow. Second operand 5 states and 539 transitions. [2022-07-19 21:27:29,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 337 transitions, 5774 flow [2022-07-19 21:27:29,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 337 transitions, 5731 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:29,875 INFO L242 Difference]: Finished difference. Result has 225 places, 310 transitions, 5041 flow [2022-07-19 21:27:29,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4630, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5041, PETRI_PLACES=225, PETRI_TRANSITIONS=310} [2022-07-19 21:27:29,875 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 113 predicate places. [2022-07-19 21:27:29,876 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 310 transitions, 5041 flow [2022-07-19 21:27:29,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,876 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:29,876 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] [2022-07-19 21:27:29,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:27:29,876 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:29,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:29,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1880774753, now seen corresponding path program 6 times [2022-07-19 21:27:29,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:29,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336477784] [2022-07-19 21:27:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:29,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:29,919 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 21:27:29,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:29,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336477784] [2022-07-19 21:27:29,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336477784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:29,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:29,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:29,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068608048] [2022-07-19 21:27:29,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:29,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:29,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:29,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:29,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:29,922 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:29,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 310 transitions, 5041 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:29,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:29,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:30,714 INFO L129 PetriNetUnfolder]: 706/5564 cut-off events. [2022-07-19 21:27:30,715 INFO L130 PetriNetUnfolder]: For 25961/26168 co-relation queries the response was YES. [2022-07-19 21:27:30,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15632 conditions, 5564 events. 706/5564 cut-off events. For 25961/26168 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 66997 event pairs, 163 based on Foata normal form. 51/5381 useless extension candidates. Maximal degree in co-relation 14960. Up to 568 conditions per place. [2022-07-19 21:27:30,764 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 186 selfloop transitions, 87 changer transitions 1/366 dead transitions. [2022-07-19 21:27:30,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 366 transitions, 6340 flow [2022-07-19 21:27:30,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:27:30,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:27:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 761 transitions. [2022-07-19 21:27:30,766 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8767281105990783 [2022-07-19 21:27:30,766 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 761 transitions. [2022-07-19 21:27:30,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 761 transitions. [2022-07-19 21:27:30,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:30,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 761 transitions. [2022-07-19 21:27:30,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,769 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,770 INFO L186 Difference]: Start difference. First operand has 225 places, 310 transitions, 5041 flow. Second operand 7 states and 761 transitions. [2022-07-19 21:27:30,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 366 transitions, 6340 flow [2022-07-19 21:27:30,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 366 transitions, 6296 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:30,873 INFO L242 Difference]: Finished difference. Result has 235 places, 323 transitions, 5610 flow [2022-07-19 21:27:30,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4985, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5610, PETRI_PLACES=235, PETRI_TRANSITIONS=323} [2022-07-19 21:27:30,874 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 123 predicate places. [2022-07-19 21:27:30,874 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 323 transitions, 5610 flow [2022-07-19 21:27:30,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,875 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:30,875 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] [2022-07-19 21:27:30,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:27:30,875 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:30,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:30,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1891498127, now seen corresponding path program 3 times [2022-07-19 21:27:30,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:30,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488184325] [2022-07-19 21:27:30,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:30,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:30,949 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 21:27:30,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:30,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488184325] [2022-07-19 21:27:30,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488184325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:30,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:30,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:30,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460008487] [2022-07-19 21:27:30,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:30,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:30,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:30,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:30,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:30,951 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:30,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 323 transitions, 5610 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:30,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:30,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:31,845 INFO L129 PetriNetUnfolder]: 741/5867 cut-off events. [2022-07-19 21:27:31,845 INFO L130 PetriNetUnfolder]: For 31172/31329 co-relation queries the response was YES. [2022-07-19 21:27:31,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17052 conditions, 5867 events. 741/5867 cut-off events. For 31172/31329 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 71560 event pairs, 214 based on Foata normal form. 51/5682 useless extension candidates. Maximal degree in co-relation 16539. Up to 578 conditions per place. [2022-07-19 21:27:31,914 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 216 selfloop transitions, 69 changer transitions 3/380 dead transitions. [2022-07-19 21:27:31,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 380 transitions, 7098 flow [2022-07-19 21:27:31,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:27:31,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:27:31,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 658 transitions. [2022-07-19 21:27:31,917 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8844086021505376 [2022-07-19 21:27:31,917 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 658 transitions. [2022-07-19 21:27:31,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 658 transitions. [2022-07-19 21:27:31,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:31,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 658 transitions. [2022-07-19 21:27:31,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:31,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:31,920 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:31,920 INFO L186 Difference]: Start difference. First operand has 235 places, 323 transitions, 5610 flow. Second operand 6 states and 658 transitions. [2022-07-19 21:27:31,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 380 transitions, 7098 flow [2022-07-19 21:27:32,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 380 transitions, 7007 flow, removed 29 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:32,076 INFO L242 Difference]: Finished difference. Result has 242 places, 337 transitions, 6052 flow [2022-07-19 21:27:32,077 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5496, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6052, PETRI_PLACES=242, PETRI_TRANSITIONS=337} [2022-07-19 21:27:32,077 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 130 predicate places. [2022-07-19 21:27:32,077 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 337 transitions, 6052 flow [2022-07-19 21:27:32,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:32,078 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:32,078 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] [2022-07-19 21:27:32,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:27:32,078 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:32,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:32,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1428426577, now seen corresponding path program 4 times [2022-07-19 21:27:32,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:32,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017129098] [2022-07-19 21:27:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:32,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:32,135 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 21:27:32,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:32,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017129098] [2022-07-19 21:27:32,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017129098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:32,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:32,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:32,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721023651] [2022-07-19 21:27:32,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:32,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:32,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:32,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:32,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:32,138 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:32,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 337 transitions, 6052 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:32,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:32,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:32,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:32,901 INFO L129 PetriNetUnfolder]: 754/6059 cut-off events. [2022-07-19 21:27:32,902 INFO L130 PetriNetUnfolder]: For 33585/33806 co-relation queries the response was YES. [2022-07-19 21:27:32,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17543 conditions, 6059 events. 754/6059 cut-off events. For 33585/33806 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 74581 event pairs, 238 based on Foata normal form. 57/5853 useless extension candidates. Maximal degree in co-relation 17037. Up to 614 conditions per place. [2022-07-19 21:27:32,954 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 209 selfloop transitions, 67 changer transitions 3/371 dead transitions. [2022-07-19 21:27:32,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 371 transitions, 7116 flow [2022-07-19 21:27:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:32,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:32,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-07-19 21:27:32,956 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2022-07-19 21:27:32,956 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-07-19 21:27:32,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-07-19 21:27:32,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:32,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-07-19 21:27:32,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:32,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:32,958 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:32,958 INFO L186 Difference]: Start difference. First operand has 242 places, 337 transitions, 6052 flow. Second operand 5 states and 548 transitions. [2022-07-19 21:27:32,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 371 transitions, 7116 flow [2022-07-19 21:27:33,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 371 transitions, 7055 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:33,089 INFO L242 Difference]: Finished difference. Result has 248 places, 348 transitions, 6461 flow [2022-07-19 21:27:33,090 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5968, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6461, PETRI_PLACES=248, PETRI_TRANSITIONS=348} [2022-07-19 21:27:33,090 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 136 predicate places. [2022-07-19 21:27:33,090 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 348 transitions, 6461 flow [2022-07-19 21:27:33,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:33,090 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:33,091 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] [2022-07-19 21:27:33,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:27:33,091 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:33,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:33,091 INFO L85 PathProgramCache]: Analyzing trace with hash -2478427, now seen corresponding path program 5 times [2022-07-19 21:27:33,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:33,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937209899] [2022-07-19 21:27:33,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:33,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:33,167 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 21:27:33,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:33,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937209899] [2022-07-19 21:27:33,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937209899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:33,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:33,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:33,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127891420] [2022-07-19 21:27:33,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:33,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:33,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:33,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:33,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:33,169 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:33,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 348 transitions, 6461 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:33,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:33,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:33,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:33,939 INFO L129 PetriNetUnfolder]: 768/6283 cut-off events. [2022-07-19 21:27:33,940 INFO L130 PetriNetUnfolder]: For 33542/33782 co-relation queries the response was YES. [2022-07-19 21:27:33,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18145 conditions, 6283 events. 768/6283 cut-off events. For 33542/33782 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 77908 event pairs, 263 based on Foata normal form. 59/6072 useless extension candidates. Maximal degree in co-relation 17557. Up to 966 conditions per place. [2022-07-19 21:27:34,011 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 235 selfloop transitions, 40 changer transitions 1/368 dead transitions. [2022-07-19 21:27:34,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 368 transitions, 7232 flow [2022-07-19 21:27:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:34,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2022-07-19 21:27:34,012 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.867741935483871 [2022-07-19 21:27:34,013 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 538 transitions. [2022-07-19 21:27:34,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 538 transitions. [2022-07-19 21:27:34,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:34,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 538 transitions. [2022-07-19 21:27:34,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:34,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:34,015 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:34,015 INFO L186 Difference]: Start difference. First operand has 248 places, 348 transitions, 6461 flow. Second operand 5 states and 538 transitions. [2022-07-19 21:27:34,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 368 transitions, 7232 flow [2022-07-19 21:27:34,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 368 transitions, 7164 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:34,190 INFO L242 Difference]: Finished difference. Result has 252 places, 348 transitions, 6490 flow [2022-07-19 21:27:34,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6354, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6490, PETRI_PLACES=252, PETRI_TRANSITIONS=348} [2022-07-19 21:27:34,191 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 140 predicate places. [2022-07-19 21:27:34,191 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 348 transitions, 6490 flow [2022-07-19 21:27:34,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:34,192 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:34,192 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] [2022-07-19 21:27:34,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:27:34,192 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:34,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:34,192 INFO L85 PathProgramCache]: Analyzing trace with hash -978243713, now seen corresponding path program 3 times [2022-07-19 21:27:34,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:34,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788562456] [2022-07-19 21:27:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:34,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:34,234 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 21:27:34,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:34,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788562456] [2022-07-19 21:27:34,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788562456] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:34,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:34,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:34,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082460865] [2022-07-19 21:27:34,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:34,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:34,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:34,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:34,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:34,237 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:34,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 348 transitions, 6490 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:34,237 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:34,237 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:34,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:35,063 INFO L129 PetriNetUnfolder]: 762/6446 cut-off events. [2022-07-19 21:27:35,064 INFO L130 PetriNetUnfolder]: For 35285/35512 co-relation queries the response was YES. [2022-07-19 21:27:35,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18348 conditions, 6446 events. 762/6446 cut-off events. For 35285/35512 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 80789 event pairs, 213 based on Foata normal form. 73/6266 useless extension candidates. Maximal degree in co-relation 17805. Up to 627 conditions per place. [2022-07-19 21:27:35,134 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 221 selfloop transitions, 65 changer transitions 0/378 dead transitions. [2022-07-19 21:27:35,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 378 transitions, 7444 flow [2022-07-19 21:27:35,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:35,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:35,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2022-07-19 21:27:35,135 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.882258064516129 [2022-07-19 21:27:35,135 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2022-07-19 21:27:35,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2022-07-19 21:27:35,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:35,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2022-07-19 21:27:35,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:35,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:35,138 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:35,138 INFO L186 Difference]: Start difference. First operand has 252 places, 348 transitions, 6490 flow. Second operand 5 states and 547 transitions. [2022-07-19 21:27:35,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 378 transitions, 7444 flow [2022-07-19 21:27:35,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 378 transitions, 7424 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:35,286 INFO L242 Difference]: Finished difference. Result has 258 places, 351 transitions, 6767 flow [2022-07-19 21:27:35,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6422, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6767, PETRI_PLACES=258, PETRI_TRANSITIONS=351} [2022-07-19 21:27:35,287 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 146 predicate places. [2022-07-19 21:27:35,287 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 351 transitions, 6767 flow [2022-07-19 21:27:35,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:35,287 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:35,287 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] [2022-07-19 21:27:35,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:27:35,288 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:35,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:35,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1567737507, now seen corresponding path program 4 times [2022-07-19 21:27:35,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:35,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760569003] [2022-07-19 21:27:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:35,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:35,330 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 21:27:35,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:35,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760569003] [2022-07-19 21:27:35,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760569003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:35,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:35,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:35,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872202762] [2022-07-19 21:27:35,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:35,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:35,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:35,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:35,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:35,332 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:35,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 351 transitions, 6767 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:35,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:35,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:35,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:36,138 INFO L129 PetriNetUnfolder]: 734/6048 cut-off events. [2022-07-19 21:27:36,139 INFO L130 PetriNetUnfolder]: For 36862/37100 co-relation queries the response was YES. [2022-07-19 21:27:36,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17880 conditions, 6048 events. 734/6048 cut-off events. For 36862/37100 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 74631 event pairs, 184 based on Foata normal form. 70/5858 useless extension candidates. Maximal degree in co-relation 17252. Up to 574 conditions per place. [2022-07-19 21:27:36,209 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 224 selfloop transitions, 62 changer transitions 0/378 dead transitions. [2022-07-19 21:27:36,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 378 transitions, 7682 flow [2022-07-19 21:27:36,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:36,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:36,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2022-07-19 21:27:36,211 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.882258064516129 [2022-07-19 21:27:36,211 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2022-07-19 21:27:36,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2022-07-19 21:27:36,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:36,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2022-07-19 21:27:36,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:36,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:36,213 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:36,213 INFO L186 Difference]: Start difference. First operand has 258 places, 351 transitions, 6767 flow. Second operand 5 states and 547 transitions. [2022-07-19 21:27:36,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 378 transitions, 7682 flow [2022-07-19 21:27:36,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 378 transitions, 7670 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-07-19 21:27:36,466 INFO L242 Difference]: Finished difference. Result has 264 places, 352 transitions, 6950 flow [2022-07-19 21:27:36,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6755, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6950, PETRI_PLACES=264, PETRI_TRANSITIONS=352} [2022-07-19 21:27:36,467 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 152 predicate places. [2022-07-19 21:27:36,467 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 352 transitions, 6950 flow [2022-07-19 21:27:36,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:36,473 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:36,473 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] [2022-07-19 21:27:36,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 21:27:36,473 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:36,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:36,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1740125745, now seen corresponding path program 7 times [2022-07-19 21:27:36,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:36,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500245569] [2022-07-19 21:27:36,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:36,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:36,575 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 21:27:36,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:36,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500245569] [2022-07-19 21:27:36,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500245569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:36,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:36,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:36,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016596758] [2022-07-19 21:27:36,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:36,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:36,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:36,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:36,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:36,577 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:36,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 352 transitions, 6950 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:36,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:36,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:36,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:37,433 INFO L129 PetriNetUnfolder]: 770/6428 cut-off events. [2022-07-19 21:27:37,433 INFO L130 PetriNetUnfolder]: For 38664/38913 co-relation queries the response was YES. [2022-07-19 21:27:37,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18821 conditions, 6428 events. 770/6428 cut-off events. For 38664/38913 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 80363 event pairs, 189 based on Foata normal form. 67/6226 useless extension candidates. Maximal degree in co-relation 18176. Up to 777 conditions per place. [2022-07-19 21:27:37,513 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 233 selfloop transitions, 53 changer transitions 0/378 dead transitions. [2022-07-19 21:27:37,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 378 transitions, 7887 flow [2022-07-19 21:27:37,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:37,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 541 transitions. [2022-07-19 21:27:37,514 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8725806451612903 [2022-07-19 21:27:37,514 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 541 transitions. [2022-07-19 21:27:37,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 541 transitions. [2022-07-19 21:27:37,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:37,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 541 transitions. [2022-07-19 21:27:37,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:37,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:37,516 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:37,517 INFO L186 Difference]: Start difference. First operand has 264 places, 352 transitions, 6950 flow. Second operand 5 states and 541 transitions. [2022-07-19 21:27:37,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 378 transitions, 7887 flow [2022-07-19 21:27:37,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 378 transitions, 7797 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:37,732 INFO L242 Difference]: Finished difference. Result has 269 places, 360 transitions, 7230 flow [2022-07-19 21:27:37,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6862, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7230, PETRI_PLACES=269, PETRI_TRANSITIONS=360} [2022-07-19 21:27:37,733 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 157 predicate places. [2022-07-19 21:27:37,733 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 360 transitions, 7230 flow [2022-07-19 21:27:37,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:37,733 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:37,734 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] [2022-07-19 21:27:37,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 21:27:37,734 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:37,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:37,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1320164269, now seen corresponding path program 8 times [2022-07-19 21:27:37,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:37,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083803084] [2022-07-19 21:27:37,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:37,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:37,780 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 21:27:37,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:37,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083803084] [2022-07-19 21:27:37,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083803084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:37,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:37,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:37,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773571924] [2022-07-19 21:27:37,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:37,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:37,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:37,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:37,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:37,783 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:37,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 360 transitions, 7230 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:37,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:37,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:37,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:38,771 INFO L129 PetriNetUnfolder]: 765/6420 cut-off events. [2022-07-19 21:27:38,771 INFO L130 PetriNetUnfolder]: For 41329/41587 co-relation queries the response was YES. [2022-07-19 21:27:38,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18852 conditions, 6420 events. 765/6420 cut-off events. For 41329/41587 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 80151 event pairs, 185 based on Foata normal form. 78/6232 useless extension candidates. Maximal degree in co-relation 18227. Up to 645 conditions per place. [2022-07-19 21:27:38,845 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 221 selfloop transitions, 81 changer transitions 3/397 dead transitions. [2022-07-19 21:27:38,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 397 transitions, 8414 flow [2022-07-19 21:27:38,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:27:38,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:27:38,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 661 transitions. [2022-07-19 21:27:38,847 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8884408602150538 [2022-07-19 21:27:38,847 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 661 transitions. [2022-07-19 21:27:38,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 661 transitions. [2022-07-19 21:27:38,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:38,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 661 transitions. [2022-07-19 21:27:38,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:38,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:38,849 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:38,850 INFO L186 Difference]: Start difference. First operand has 269 places, 360 transitions, 7230 flow. Second operand 6 states and 661 transitions. [2022-07-19 21:27:38,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 397 transitions, 8414 flow [2022-07-19 21:27:39,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 397 transitions, 8360 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:39,073 INFO L242 Difference]: Finished difference. Result has 275 places, 365 transitions, 7605 flow [2022-07-19 21:27:39,074 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7145, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7605, PETRI_PLACES=275, PETRI_TRANSITIONS=365} [2022-07-19 21:27:39,074 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 163 predicate places. [2022-07-19 21:27:39,075 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 365 transitions, 7605 flow [2022-07-19 21:27:39,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:39,075 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:39,075 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] [2022-07-19 21:27:39,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 21:27:39,075 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:39,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:39,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1717712703, now seen corresponding path program 5 times [2022-07-19 21:27:39,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:39,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487394551] [2022-07-19 21:27:39,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:39,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:39,122 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 21:27:39,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:39,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487394551] [2022-07-19 21:27:39,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487394551] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:39,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:39,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:39,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162138229] [2022-07-19 21:27:39,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:39,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:39,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:39,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:39,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:39,124 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:39,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 365 transitions, 7605 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:39,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:39,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:39,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:40,222 INFO L129 PetriNetUnfolder]: 705/5973 cut-off events. [2022-07-19 21:27:40,222 INFO L130 PetriNetUnfolder]: For 45064/45248 co-relation queries the response was YES. [2022-07-19 21:27:40,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18107 conditions, 5973 events. 705/5973 cut-off events. For 45064/45248 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 74147 event pairs, 186 based on Foata normal form. 60/5809 useless extension candidates. Maximal degree in co-relation 17492. Up to 578 conditions per place. [2022-07-19 21:27:40,306 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 206 selfloop transitions, 105 changer transitions 2/405 dead transitions. [2022-07-19 21:27:40,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 405 transitions, 8771 flow [2022-07-19 21:27:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:27:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:27:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 761 transitions. [2022-07-19 21:27:40,308 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8767281105990783 [2022-07-19 21:27:40,308 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 761 transitions. [2022-07-19 21:27:40,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 761 transitions. [2022-07-19 21:27:40,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:40,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 761 transitions. [2022-07-19 21:27:40,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:40,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:40,310 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:40,311 INFO L186 Difference]: Start difference. First operand has 275 places, 365 transitions, 7605 flow. Second operand 7 states and 761 transitions. [2022-07-19 21:27:40,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 405 transitions, 8771 flow [2022-07-19 21:27:40,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 405 transitions, 8580 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-07-19 21:27:40,559 INFO L242 Difference]: Finished difference. Result has 279 places, 372 transitions, 7959 flow [2022-07-19 21:27:40,559 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7398, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7959, PETRI_PLACES=279, PETRI_TRANSITIONS=372} [2022-07-19 21:27:40,560 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 167 predicate places. [2022-07-19 21:27:40,560 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 372 transitions, 7959 flow [2022-07-19 21:27:40,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:40,560 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:40,560 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] [2022-07-19 21:27:40,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 21:27:40,561 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:40,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:40,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1655621339, now seen corresponding path program 9 times [2022-07-19 21:27:40,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:40,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072616676] [2022-07-19 21:27:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:40,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:40,644 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 21:27:40,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:40,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072616676] [2022-07-19 21:27:40,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072616676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:40,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:40,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:40,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325097563] [2022-07-19 21:27:40,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:40,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:40,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:40,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:40,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:40,646 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:40,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 372 transitions, 7959 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:40,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:40,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:40,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:41,626 INFO L129 PetriNetUnfolder]: 777/6440 cut-off events. [2022-07-19 21:27:41,626 INFO L130 PetriNetUnfolder]: For 47818/48085 co-relation queries the response was YES. [2022-07-19 21:27:41,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19486 conditions, 6440 events. 777/6440 cut-off events. For 47818/48085 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 80673 event pairs, 263 based on Foata normal form. 68/6236 useless extension candidates. Maximal degree in co-relation 18854. Up to 657 conditions per place. [2022-07-19 21:27:41,711 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 248 selfloop transitions, 61 changer transitions 0/401 dead transitions. [2022-07-19 21:27:41,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 401 transitions, 9073 flow [2022-07-19 21:27:41,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:41,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:41,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 543 transitions. [2022-07-19 21:27:41,713 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8758064516129033 [2022-07-19 21:27:41,713 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 543 transitions. [2022-07-19 21:27:41,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 543 transitions. [2022-07-19 21:27:41,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:41,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 543 transitions. [2022-07-19 21:27:41,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:41,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:41,715 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:41,715 INFO L186 Difference]: Start difference. First operand has 279 places, 372 transitions, 7959 flow. Second operand 5 states and 543 transitions. [2022-07-19 21:27:41,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 401 transitions, 9073 flow [2022-07-19 21:27:41,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 401 transitions, 8964 flow, removed 29 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:41,968 INFO L242 Difference]: Finished difference. Result has 284 places, 381 transitions, 8362 flow [2022-07-19 21:27:41,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7852, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8362, PETRI_PLACES=284, PETRI_TRANSITIONS=381} [2022-07-19 21:27:41,969 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 172 predicate places. [2022-07-19 21:27:41,969 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 381 transitions, 8362 flow [2022-07-19 21:27:41,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:41,969 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:41,969 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] [2022-07-19 21:27:41,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 21:27:41,970 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:41,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:41,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1999693023, now seen corresponding path program 6 times [2022-07-19 21:27:41,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:41,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578947424] [2022-07-19 21:27:41,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:41,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:42,026 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 21:27:42,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:42,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578947424] [2022-07-19 21:27:42,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578947424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:42,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:42,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:42,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023477214] [2022-07-19 21:27:42,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:42,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:42,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:42,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:42,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:42,028 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:42,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 381 transitions, 8362 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:42,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:42,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:42,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:42,894 INFO L129 PetriNetUnfolder]: 765/6422 cut-off events. [2022-07-19 21:27:42,895 INFO L130 PetriNetUnfolder]: For 52709/52959 co-relation queries the response was YES. [2022-07-19 21:27:42,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19687 conditions, 6422 events. 765/6422 cut-off events. For 52709/52959 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 80573 event pairs, 210 based on Foata normal form. 90/6256 useless extension candidates. Maximal degree in co-relation 19070. Up to 620 conditions per place. [2022-07-19 21:27:42,980 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 247 selfloop transitions, 91 changer transitions 11/441 dead transitions. [2022-07-19 21:27:42,981 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 441 transitions, 10524 flow [2022-07-19 21:27:42,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:42,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2022-07-19 21:27:42,982 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8887096774193548 [2022-07-19 21:27:42,982 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2022-07-19 21:27:42,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2022-07-19 21:27:42,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:42,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2022-07-19 21:27:42,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:42,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:42,984 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:42,984 INFO L186 Difference]: Start difference. First operand has 284 places, 381 transitions, 8362 flow. Second operand 5 states and 551 transitions. [2022-07-19 21:27:42,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 441 transitions, 10524 flow [2022-07-19 21:27:43,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 441 transitions, 10518 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-07-19 21:27:43,234 INFO L242 Difference]: Finished difference. Result has 291 places, 402 transitions, 9400 flow [2022-07-19 21:27:43,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8297, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9400, PETRI_PLACES=291, PETRI_TRANSITIONS=402} [2022-07-19 21:27:43,235 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 179 predicate places. [2022-07-19 21:27:43,236 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 402 transitions, 9400 flow [2022-07-19 21:27:43,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:43,236 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:43,236 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] [2022-07-19 21:27:43,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 21:27:43,236 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:43,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:43,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1157485625, now seen corresponding path program 10 times [2022-07-19 21:27:43,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:43,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419488971] [2022-07-19 21:27:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:43,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:43,280 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 21:27:43,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:43,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419488971] [2022-07-19 21:27:43,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419488971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:43,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:43,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:43,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44159520] [2022-07-19 21:27:43,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:43,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:43,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:43,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:43,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:43,283 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:43,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 402 transitions, 9400 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:43,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:43,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:43,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:44,157 INFO L129 PetriNetUnfolder]: 731/6073 cut-off events. [2022-07-19 21:27:44,157 INFO L130 PetriNetUnfolder]: For 52979/53254 co-relation queries the response was YES. [2022-07-19 21:27:44,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19170 conditions, 6073 events. 731/6073 cut-off events. For 52979/53254 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 75218 event pairs, 176 based on Foata normal form. 88/5900 useless extension candidates. Maximal degree in co-relation 18489. Up to 592 conditions per place. [2022-07-19 21:27:44,239 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 243 selfloop transitions, 90 changer transitions 11/436 dead transitions. [2022-07-19 21:27:44,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 436 transitions, 10708 flow [2022-07-19 21:27:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:44,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 550 transitions. [2022-07-19 21:27:44,241 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2022-07-19 21:27:44,241 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 550 transitions. [2022-07-19 21:27:44,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 550 transitions. [2022-07-19 21:27:44,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:44,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 550 transitions. [2022-07-19 21:27:44,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:44,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:44,243 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:44,243 INFO L186 Difference]: Start difference. First operand has 291 places, 402 transitions, 9400 flow. Second operand 5 states and 550 transitions. [2022-07-19 21:27:44,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 436 transitions, 10708 flow [2022-07-19 21:27:44,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 436 transitions, 10627 flow, removed 22 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:44,519 INFO L242 Difference]: Finished difference. Result has 297 places, 405 transitions, 9695 flow [2022-07-19 21:27:44,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9076, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9695, PETRI_PLACES=297, PETRI_TRANSITIONS=405} [2022-07-19 21:27:44,520 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 185 predicate places. [2022-07-19 21:27:44,521 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 405 transitions, 9695 flow [2022-07-19 21:27:44,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:44,521 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:44,521 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] [2022-07-19 21:27:44,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 21:27:44,521 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:44,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:44,522 INFO L85 PathProgramCache]: Analyzing trace with hash 286651317, now seen corresponding path program 7 times [2022-07-19 21:27:44,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:44,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224780646] [2022-07-19 21:27:44,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:44,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:44,571 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 21:27:44,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:44,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224780646] [2022-07-19 21:27:44,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224780646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:44,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:44,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:44,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792961171] [2022-07-19 21:27:44,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:44,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:44,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:44,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:44,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:44,574 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:44,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 405 transitions, 9695 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:44,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:44,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:44,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:45,509 INFO L129 PetriNetUnfolder]: 721/6089 cut-off events. [2022-07-19 21:27:45,509 INFO L130 PetriNetUnfolder]: For 53117/53364 co-relation queries the response was YES. [2022-07-19 21:27:45,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19257 conditions, 6089 events. 721/6089 cut-off events. For 53117/53364 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 75528 event pairs, 177 based on Foata normal form. 82/5916 useless extension candidates. Maximal degree in co-relation 18617. Up to 611 conditions per place. [2022-07-19 21:27:45,561 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 267 selfloop transitions, 85 changer transitions 2/446 dead transitions. [2022-07-19 21:27:45,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 446 transitions, 11299 flow [2022-07-19 21:27:45,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:45,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:45,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2022-07-19 21:27:45,563 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8919354838709678 [2022-07-19 21:27:45,563 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2022-07-19 21:27:45,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2022-07-19 21:27:45,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:45,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2022-07-19 21:27:45,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:45,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:45,565 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:45,565 INFO L186 Difference]: Start difference. First operand has 297 places, 405 transitions, 9695 flow. Second operand 5 states and 553 transitions. [2022-07-19 21:27:45,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 446 transitions, 11299 flow [2022-07-19 21:27:45,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 446 transitions, 11146 flow, removed 28 selfloop flow, removed 3 redundant places. [2022-07-19 21:27:45,807 INFO L242 Difference]: Finished difference. Result has 302 places, 414 transitions, 10230 flow [2022-07-19 21:27:45,808 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9428, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10230, PETRI_PLACES=302, PETRI_TRANSITIONS=414} [2022-07-19 21:27:45,808 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 190 predicate places. [2022-07-19 21:27:45,808 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 414 transitions, 10230 flow [2022-07-19 21:27:45,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:45,809 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:45,809 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] [2022-07-19 21:27:45,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 21:27:45,809 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:45,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:45,810 INFO L85 PathProgramCache]: Analyzing trace with hash 391902859, now seen corresponding path program 8 times [2022-07-19 21:27:45,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:45,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590120182] [2022-07-19 21:27:45,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:45,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:45,872 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 21:27:45,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:45,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590120182] [2022-07-19 21:27:45,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590120182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:45,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:45,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:45,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485103190] [2022-07-19 21:27:45,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:45,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:45,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:45,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:45,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:45,875 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:45,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 414 transitions, 10230 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:45,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:45,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:45,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:46,792 INFO L129 PetriNetUnfolder]: 759/6224 cut-off events. [2022-07-19 21:27:46,793 INFO L130 PetriNetUnfolder]: For 56114/56400 co-relation queries the response was YES. [2022-07-19 21:27:46,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19976 conditions, 6224 events. 759/6224 cut-off events. For 56114/56400 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 77612 event pairs, 211 based on Foata normal form. 79/6036 useless extension candidates. Maximal degree in co-relation 19262. Up to 634 conditions per place. [2022-07-19 21:27:46,886 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 267 selfloop transitions, 81 changer transitions 1/441 dead transitions. [2022-07-19 21:27:46,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 441 transitions, 11357 flow [2022-07-19 21:27:46,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:46,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 543 transitions. [2022-07-19 21:27:46,887 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8758064516129033 [2022-07-19 21:27:46,888 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 543 transitions. [2022-07-19 21:27:46,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 543 transitions. [2022-07-19 21:27:46,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:46,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 543 transitions. [2022-07-19 21:27:46,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:46,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:46,889 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:46,889 INFO L186 Difference]: Start difference. First operand has 302 places, 414 transitions, 10230 flow. Second operand 5 states and 543 transitions. [2022-07-19 21:27:46,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 441 transitions, 11357 flow [2022-07-19 21:27:47,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 441 transitions, 11296 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:47,171 INFO L242 Difference]: Finished difference. Result has 307 places, 421 transitions, 10593 flow [2022-07-19 21:27:47,172 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10078, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10593, PETRI_PLACES=307, PETRI_TRANSITIONS=421} [2022-07-19 21:27:47,172 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 195 predicate places. [2022-07-19 21:27:47,173 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 421 transitions, 10593 flow [2022-07-19 21:27:47,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:47,173 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:47,173 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:47,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 21:27:47,173 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:47,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:47,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1302414471, now seen corresponding path program 6 times [2022-07-19 21:27:47,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:47,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978846263] [2022-07-19 21:27:47,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:47,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:47,226 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 21:27:47,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:47,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978846263] [2022-07-19 21:27:47,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978846263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:47,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:47,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:47,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111403928] [2022-07-19 21:27:47,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:47,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:47,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:47,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:47,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:47,228 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:47,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 421 transitions, 10593 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:47,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:47,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:47,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:48,278 INFO L129 PetriNetUnfolder]: 821/6884 cut-off events. [2022-07-19 21:27:48,278 INFO L130 PetriNetUnfolder]: For 62322/62656 co-relation queries the response was YES. [2022-07-19 21:27:48,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21853 conditions, 6884 events. 821/6884 cut-off events. For 62322/62656 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 87772 event pairs, 228 based on Foata normal form. 88/6688 useless extension candidates. Maximal degree in co-relation 21200. Up to 677 conditions per place. [2022-07-19 21:27:48,365 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 263 selfloop transitions, 115 changer transitions 1/471 dead transitions. [2022-07-19 21:27:48,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 471 transitions, 12559 flow [2022-07-19 21:27:48,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:48,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 550 transitions. [2022-07-19 21:27:48,367 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2022-07-19 21:27:48,367 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 550 transitions. [2022-07-19 21:27:48,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 550 transitions. [2022-07-19 21:27:48,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:48,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 550 transitions. [2022-07-19 21:27:48,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:48,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:48,369 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:48,369 INFO L186 Difference]: Start difference. First operand has 307 places, 421 transitions, 10593 flow. Second operand 5 states and 550 transitions. [2022-07-19 21:27:48,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 471 transitions, 12559 flow [2022-07-19 21:27:48,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 471 transitions, 12523 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:48,740 INFO L242 Difference]: Finished difference. Result has 311 places, 442 transitions, 11730 flow [2022-07-19 21:27:48,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10519, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11730, PETRI_PLACES=311, PETRI_TRANSITIONS=442} [2022-07-19 21:27:48,741 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 199 predicate places. [2022-07-19 21:27:48,741 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 442 transitions, 11730 flow [2022-07-19 21:27:48,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:48,741 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:48,741 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] [2022-07-19 21:27:48,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 21:27:48,742 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:48,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:48,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1683146627, now seen corresponding path program 4 times [2022-07-19 21:27:48,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:48,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756797868] [2022-07-19 21:27:48,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:48,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:48,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:48,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756797868] [2022-07-19 21:27:48,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756797868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:48,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:48,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:48,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007501345] [2022-07-19 21:27:48,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:48,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:48,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:48,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:48,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:48,793 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:48,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 442 transitions, 11730 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:48,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:48,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:48,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:49,914 INFO L129 PetriNetUnfolder]: 851/7234 cut-off events. [2022-07-19 21:27:49,914 INFO L130 PetriNetUnfolder]: For 70798/71154 co-relation queries the response was YES. [2022-07-19 21:27:49,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23009 conditions, 7234 events. 851/7234 cut-off events. For 70798/71154 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 93408 event pairs, 241 based on Foata normal form. 104/7045 useless extension candidates. Maximal degree in co-relation 22071. Up to 746 conditions per place. [2022-07-19 21:27:50,009 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 281 selfloop transitions, 94 changer transitions 5/472 dead transitions. [2022-07-19 21:27:50,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 472 transitions, 12958 flow [2022-07-19 21:27:50,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 554 transitions. [2022-07-19 21:27:50,010 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8935483870967742 [2022-07-19 21:27:50,010 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 554 transitions. [2022-07-19 21:27:50,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 554 transitions. [2022-07-19 21:27:50,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:50,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 554 transitions. [2022-07-19 21:27:50,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:50,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:50,012 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:50,012 INFO L186 Difference]: Start difference. First operand has 311 places, 442 transitions, 11730 flow. Second operand 5 states and 554 transitions. [2022-07-19 21:27:50,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 472 transitions, 12958 flow [2022-07-19 21:27:50,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 472 transitions, 12882 flow, removed 16 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:50,409 INFO L242 Difference]: Finished difference. Result has 317 places, 446 transitions, 12081 flow [2022-07-19 21:27:50,409 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11516, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12081, PETRI_PLACES=317, PETRI_TRANSITIONS=446} [2022-07-19 21:27:50,410 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 205 predicate places. [2022-07-19 21:27:50,410 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 446 transitions, 12081 flow [2022-07-19 21:27:50,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:50,411 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:50,411 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] [2022-07-19 21:27:50,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 21:27:50,411 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:50,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:50,411 INFO L85 PathProgramCache]: Analyzing trace with hash 154583419, now seen corresponding path program 7 times [2022-07-19 21:27:50,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:50,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155337537] [2022-07-19 21:27:50,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:50,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:50,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:50,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155337537] [2022-07-19 21:27:50,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155337537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:50,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:50,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:50,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727431664] [2022-07-19 21:27:50,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:50,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:50,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:50,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:50,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:50,458 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:50,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 446 transitions, 12081 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:50,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:50,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:50,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:51,628 INFO L129 PetriNetUnfolder]: 844/7238 cut-off events. [2022-07-19 21:27:51,629 INFO L130 PetriNetUnfolder]: For 71976/72334 co-relation queries the response was YES. [2022-07-19 21:27:51,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23201 conditions, 7238 events. 844/7238 cut-off events. For 71976/72334 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 93384 event pairs, 253 based on Foata normal form. 91/7034 useless extension candidates. Maximal degree in co-relation 22263. Up to 746 conditions per place. [2022-07-19 21:27:51,731 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 273 selfloop transitions, 97 changer transitions 0/462 dead transitions. [2022-07-19 21:27:51,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 462 transitions, 12985 flow [2022-07-19 21:27:51,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:51,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:51,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 543 transitions. [2022-07-19 21:27:51,732 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8758064516129033 [2022-07-19 21:27:51,732 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 543 transitions. [2022-07-19 21:27:51,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 543 transitions. [2022-07-19 21:27:51,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:51,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 543 transitions. [2022-07-19 21:27:51,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:51,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:51,734 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:51,734 INFO L186 Difference]: Start difference. First operand has 317 places, 446 transitions, 12081 flow. Second operand 5 states and 543 transitions. [2022-07-19 21:27:51,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 462 transitions, 12985 flow [2022-07-19 21:27:52,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 462 transitions, 12923 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:52,185 INFO L242 Difference]: Finished difference. Result has 320 places, 445 transitions, 12185 flow [2022-07-19 21:27:52,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11991, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12185, PETRI_PLACES=320, PETRI_TRANSITIONS=445} [2022-07-19 21:27:52,185 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 208 predicate places. [2022-07-19 21:27:52,186 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 445 transitions, 12185 flow [2022-07-19 21:27:52,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:52,186 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:52,186 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] [2022-07-19 21:27:52,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 21:27:52,186 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:52,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:52,187 INFO L85 PathProgramCache]: Analyzing trace with hash 909936171, now seen corresponding path program 8 times [2022-07-19 21:27:52,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:52,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443974510] [2022-07-19 21:27:52,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:52,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:52,227 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 21:27:52,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:52,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443974510] [2022-07-19 21:27:52,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443974510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:52,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:52,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:52,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459113904] [2022-07-19 21:27:52,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:52,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:52,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:52,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:52,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:52,229 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:52,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 445 transitions, 12185 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:52,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:52,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:52,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:53,347 INFO L129 PetriNetUnfolder]: 823/6976 cut-off events. [2022-07-19 21:27:53,348 INFO L130 PetriNetUnfolder]: For 74897/75237 co-relation queries the response was YES. [2022-07-19 21:27:53,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22639 conditions, 6976 events. 823/6976 cut-off events. For 74897/75237 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 89380 event pairs, 215 based on Foata normal form. 94/6797 useless extension candidates. Maximal degree in co-relation 21701. Up to 707 conditions per place. [2022-07-19 21:27:53,434 INFO L132 encePairwiseOnDemand]: 108/124 looper letters, 254 selfloop transitions, 111 changer transitions 3/460 dead transitions. [2022-07-19 21:27:53,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 460 transitions, 12796 flow [2022-07-19 21:27:53,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:27:53,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:27:53,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 660 transitions. [2022-07-19 21:27:53,436 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2022-07-19 21:27:53,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 660 transitions. [2022-07-19 21:27:53,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 660 transitions. [2022-07-19 21:27:53,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:53,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 660 transitions. [2022-07-19 21:27:53,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:53,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:53,438 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:53,438 INFO L186 Difference]: Start difference. First operand has 320 places, 445 transitions, 12185 flow. Second operand 6 states and 660 transitions. [2022-07-19 21:27:53,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 460 transitions, 12796 flow [2022-07-19 21:27:53,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 460 transitions, 12732 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:53,855 INFO L242 Difference]: Finished difference. Result has 324 places, 436 transitions, 11921 flow [2022-07-19 21:27:53,856 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11787, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11921, PETRI_PLACES=324, PETRI_TRANSITIONS=436} [2022-07-19 21:27:53,857 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 212 predicate places. [2022-07-19 21:27:53,857 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 436 transitions, 11921 flow [2022-07-19 21:27:53,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:53,857 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:53,858 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] [2022-07-19 21:27:53,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 21:27:53,858 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:53,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:53,858 INFO L85 PathProgramCache]: Analyzing trace with hash -261852381, now seen corresponding path program 5 times [2022-07-19 21:27:53,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:53,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130785382] [2022-07-19 21:27:53,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:53,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:53,908 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 21:27:53,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:53,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130785382] [2022-07-19 21:27:53,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130785382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:53,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:53,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:53,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420903977] [2022-07-19 21:27:53,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:53,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:53,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:53,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:53,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:53,911 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:53,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 436 transitions, 11921 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:53,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:53,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:53,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:55,051 INFO L129 PetriNetUnfolder]: 832/7095 cut-off events. [2022-07-19 21:27:55,052 INFO L130 PetriNetUnfolder]: For 72029/72386 co-relation queries the response was YES. [2022-07-19 21:27:55,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22990 conditions, 7095 events. 832/7095 cut-off events. For 72029/72386 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 91144 event pairs, 257 based on Foata normal form. 93/6896 useless extension candidates. Maximal degree in co-relation 22046. Up to 740 conditions per place. [2022-07-19 21:27:55,155 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 284 selfloop transitions, 78 changer transitions 1/455 dead transitions. [2022-07-19 21:27:55,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 455 transitions, 12872 flow [2022-07-19 21:27:55,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:55,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 541 transitions. [2022-07-19 21:27:55,156 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8725806451612903 [2022-07-19 21:27:55,156 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 541 transitions. [2022-07-19 21:27:55,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 541 transitions. [2022-07-19 21:27:55,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:55,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 541 transitions. [2022-07-19 21:27:55,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:55,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:55,158 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:55,158 INFO L186 Difference]: Start difference. First operand has 324 places, 436 transitions, 11921 flow. Second operand 5 states and 541 transitions. [2022-07-19 21:27:55,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 455 transitions, 12872 flow [2022-07-19 21:27:55,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 455 transitions, 12687 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-07-19 21:27:55,607 INFO L242 Difference]: Finished difference. Result has 326 places, 437 transitions, 11966 flow [2022-07-19 21:27:55,608 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11736, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11966, PETRI_PLACES=326, PETRI_TRANSITIONS=437} [2022-07-19 21:27:55,608 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 214 predicate places. [2022-07-19 21:27:55,608 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 437 transitions, 11966 flow [2022-07-19 21:27:55,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:55,609 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:55,609 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] [2022-07-19 21:27:55,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 21:27:55,609 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:55,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:55,610 INFO L85 PathProgramCache]: Analyzing trace with hash 745197785, now seen corresponding path program 9 times [2022-07-19 21:27:55,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:55,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975559973] [2022-07-19 21:27:55,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:55,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:55,661 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 21:27:55,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:55,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975559973] [2022-07-19 21:27:55,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975559973] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:55,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:55,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:55,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967770349] [2022-07-19 21:27:55,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:55,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:55,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:55,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:55,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:55,663 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:55,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 437 transitions, 11966 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:55,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:55,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:55,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:56,813 INFO L129 PetriNetUnfolder]: 870/7359 cut-off events. [2022-07-19 21:27:56,813 INFO L130 PetriNetUnfolder]: For 75208/75605 co-relation queries the response was YES. [2022-07-19 21:27:56,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23754 conditions, 7359 events. 870/7359 cut-off events. For 75208/75605 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 95105 event pairs, 253 based on Foata normal form. 99/7145 useless extension candidates. Maximal degree in co-relation 22910. Up to 759 conditions per place. [2022-07-19 21:27:56,905 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 279 selfloop transitions, 91 changer transitions 1/463 dead transitions. [2022-07-19 21:27:56,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 463 transitions, 13311 flow [2022-07-19 21:27:56,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:56,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:56,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 544 transitions. [2022-07-19 21:27:56,906 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8774193548387097 [2022-07-19 21:27:56,906 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 544 transitions. [2022-07-19 21:27:56,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 544 transitions. [2022-07-19 21:27:56,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:56,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 544 transitions. [2022-07-19 21:27:56,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:56,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:56,908 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:56,908 INFO L186 Difference]: Start difference. First operand has 326 places, 437 transitions, 11966 flow. Second operand 5 states and 544 transitions. [2022-07-19 21:27:56,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 463 transitions, 13311 flow [2022-07-19 21:27:57,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 463 transitions, 13174 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-07-19 21:27:57,340 INFO L242 Difference]: Finished difference. Result has 329 places, 441 transitions, 12285 flow [2022-07-19 21:27:57,341 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11781, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12285, PETRI_PLACES=329, PETRI_TRANSITIONS=441} [2022-07-19 21:27:57,341 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 217 predicate places. [2022-07-19 21:27:57,341 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 441 transitions, 12285 flow [2022-07-19 21:27:57,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:57,342 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:57,342 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] [2022-07-19 21:27:57,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-19 21:27:57,342 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:57,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:57,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1979299045, now seen corresponding path program 6 times [2022-07-19 21:27:57,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:57,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672804335] [2022-07-19 21:27:57,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:57,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:57,389 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 21:27:57,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:57,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672804335] [2022-07-19 21:27:57,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672804335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:57,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:57,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:57,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23103621] [2022-07-19 21:27:57,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:57,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:57,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:57,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:57,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:57,391 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:57,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 441 transitions, 12285 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:57,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:57,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:57,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:58,589 INFO L129 PetriNetUnfolder]: 853/7279 cut-off events. [2022-07-19 21:27:58,589 INFO L130 PetriNetUnfolder]: For 74587/74963 co-relation queries the response was YES. [2022-07-19 21:27:58,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23796 conditions, 7279 events. 853/7279 cut-off events. For 74587/74963 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 94061 event pairs, 234 based on Foata normal form. 95/7069 useless extension candidates. Maximal degree in co-relation 22875. Up to 731 conditions per place. [2022-07-19 21:27:58,688 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 282 selfloop transitions, 88 changer transitions 1/463 dead transitions. [2022-07-19 21:27:58,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 463 transitions, 13325 flow [2022-07-19 21:27:58,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:27:58,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:27:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2022-07-19 21:27:58,690 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8806451612903226 [2022-07-19 21:27:58,690 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2022-07-19 21:27:58,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2022-07-19 21:27:58,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:58,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2022-07-19 21:27:58,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:58,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:58,692 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:58,692 INFO L186 Difference]: Start difference. First operand has 329 places, 441 transitions, 12285 flow. Second operand 5 states and 546 transitions. [2022-07-19 21:27:58,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 463 transitions, 13325 flow [2022-07-19 21:27:59,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 463 transitions, 13184 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-07-19 21:27:59,154 INFO L242 Difference]: Finished difference. Result has 328 places, 443 transitions, 12454 flow [2022-07-19 21:27:59,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12103, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12454, PETRI_PLACES=328, PETRI_TRANSITIONS=443} [2022-07-19 21:27:59,155 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 216 predicate places. [2022-07-19 21:27:59,155 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 443 transitions, 12454 flow [2022-07-19 21:27:59,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:59,156 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:59,156 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] [2022-07-19 21:27:59,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-19 21:27:59,156 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:59,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:59,156 INFO L85 PathProgramCache]: Analyzing trace with hash -2121405323, now seen corresponding path program 9 times [2022-07-19 21:27:59,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:59,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150210790] [2022-07-19 21:27:59,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:59,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:59,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:59,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150210790] [2022-07-19 21:27:59,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150210790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:59,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:59,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:27:59,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264604053] [2022-07-19 21:27:59,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:59,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:27:59,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:59,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:27:59,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:27:59,210 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:27:59,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 443 transitions, 12454 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:59,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:59,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:27:59,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:00,316 INFO L129 PetriNetUnfolder]: 847/7009 cut-off events. [2022-07-19 21:28:00,317 INFO L130 PetriNetUnfolder]: For 78986/79331 co-relation queries the response was YES. [2022-07-19 21:28:00,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23335 conditions, 7009 events. 847/7009 cut-off events. For 78986/79331 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 89440 event pairs, 218 based on Foata normal form. 101/6816 useless extension candidates. Maximal degree in co-relation 22517. Up to 736 conditions per place. [2022-07-19 21:28:00,407 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 285 selfloop transitions, 85 changer transitions 5/467 dead transitions. [2022-07-19 21:28:00,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 467 transitions, 13592 flow [2022-07-19 21:28:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:28:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:28:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 550 transitions. [2022-07-19 21:28:00,409 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2022-07-19 21:28:00,409 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 550 transitions. [2022-07-19 21:28:00,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 550 transitions. [2022-07-19 21:28:00,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:00,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 550 transitions. [2022-07-19 21:28:00,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:00,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:00,411 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:00,411 INFO L186 Difference]: Start difference. First operand has 328 places, 443 transitions, 12454 flow. Second operand 5 states and 550 transitions. [2022-07-19 21:28:00,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 467 transitions, 13592 flow [2022-07-19 21:28:00,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 467 transitions, 13420 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-07-19 21:28:00,842 INFO L242 Difference]: Finished difference. Result has 329 places, 440 transitions, 12356 flow [2022-07-19 21:28:00,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12114, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12356, PETRI_PLACES=329, PETRI_TRANSITIONS=440} [2022-07-19 21:28:00,843 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 217 predicate places. [2022-07-19 21:28:00,843 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 440 transitions, 12356 flow [2022-07-19 21:28:00,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:00,844 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:00,844 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] [2022-07-19 21:28:00,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-19 21:28:00,844 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:00,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:00,844 INFO L85 PathProgramCache]: Analyzing trace with hash -676483081, now seen corresponding path program 11 times [2022-07-19 21:28:00,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:00,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274107425] [2022-07-19 21:28:00,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:00,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:00,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:00,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274107425] [2022-07-19 21:28:00,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274107425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:00,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:00,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:28:00,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564428001] [2022-07-19 21:28:00,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:00,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:28:00,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:00,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:28:00,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:28:00,894 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:28:00,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 440 transitions, 12356 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:00,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:00,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:28:00,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:02,010 INFO L129 PetriNetUnfolder]: 841/7002 cut-off events. [2022-07-19 21:28:02,011 INFO L130 PetriNetUnfolder]: For 77203/77539 co-relation queries the response was YES. [2022-07-19 21:28:02,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23271 conditions, 7002 events. 841/7002 cut-off events. For 77203/77539 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 89612 event pairs, 226 based on Foata normal form. 101/6787 useless extension candidates. Maximal degree in co-relation 22234. Up to 740 conditions per place. [2022-07-19 21:28:02,104 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 285 selfloop transitions, 85 changer transitions 3/465 dead transitions. [2022-07-19 21:28:02,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 465 transitions, 13438 flow [2022-07-19 21:28:02,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:28:02,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:28:02,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2022-07-19 21:28:02,105 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8903225806451613 [2022-07-19 21:28:02,105 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 552 transitions. [2022-07-19 21:28:02,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 552 transitions. [2022-07-19 21:28:02,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:02,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 552 transitions. [2022-07-19 21:28:02,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:02,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:02,107 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:02,107 INFO L186 Difference]: Start difference. First operand has 329 places, 440 transitions, 12356 flow. Second operand 5 states and 552 transitions. [2022-07-19 21:28:02,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 465 transitions, 13438 flow [2022-07-19 21:28:02,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 465 transitions, 13361 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:28:02,570 INFO L242 Difference]: Finished difference. Result has 333 places, 441 transitions, 12619 flow [2022-07-19 21:28:02,571 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12144, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12619, PETRI_PLACES=333, PETRI_TRANSITIONS=441} [2022-07-19 21:28:02,571 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 221 predicate places. [2022-07-19 21:28:02,571 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 441 transitions, 12619 flow [2022-07-19 21:28:02,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:02,572 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:02,572 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] [2022-07-19 21:28:02,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-19 21:28:02,572 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:02,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:02,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1287364473, now seen corresponding path program 12 times [2022-07-19 21:28:02,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:02,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490837650] [2022-07-19 21:28:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:02,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:02,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:02,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490837650] [2022-07-19 21:28:02,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490837650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:02,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:02,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:28:02,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395078281] [2022-07-19 21:28:02,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:02,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:28:02,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:02,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:28:02,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:28:02,622 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:28:02,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 441 transitions, 12619 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:02,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:02,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:28:02,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:03,778 INFO L129 PetriNetUnfolder]: 850/6880 cut-off events. [2022-07-19 21:28:03,778 INFO L130 PetriNetUnfolder]: For 81120/81460 co-relation queries the response was YES. [2022-07-19 21:28:03,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23274 conditions, 6880 events. 850/6880 cut-off events. For 81120/81460 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 87308 event pairs, 241 based on Foata normal form. 95/6673 useless extension candidates. Maximal degree in co-relation 22456. Up to 748 conditions per place. [2022-07-19 21:28:03,862 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 283 selfloop transitions, 81 changer transitions 2/458 dead transitions. [2022-07-19 21:28:03,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 458 transitions, 13405 flow [2022-07-19 21:28:03,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:28:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:28:03,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 550 transitions. [2022-07-19 21:28:03,864 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2022-07-19 21:28:03,864 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 550 transitions. [2022-07-19 21:28:03,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 550 transitions. [2022-07-19 21:28:03,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:03,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 550 transitions. [2022-07-19 21:28:03,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:03,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:03,866 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:03,866 INFO L186 Difference]: Start difference. First operand has 333 places, 441 transitions, 12619 flow. Second operand 5 states and 550 transitions. [2022-07-19 21:28:03,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 458 transitions, 13405 flow [2022-07-19 21:28:04,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 458 transitions, 13269 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-07-19 21:28:04,342 INFO L242 Difference]: Finished difference. Result has 333 places, 436 transitions, 12489 flow [2022-07-19 21:28:04,342 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12348, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12489, PETRI_PLACES=333, PETRI_TRANSITIONS=436} [2022-07-19 21:28:04,343 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 221 predicate places. [2022-07-19 21:28:04,343 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 436 transitions, 12489 flow [2022-07-19 21:28:04,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:04,343 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:04,343 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] [2022-07-19 21:28:04,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-19 21:28:04,344 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:04,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:04,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1761510846, now seen corresponding path program 1 times [2022-07-19 21:28:04,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:04,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651482636] [2022-07-19 21:28:04,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:04,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:04,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:04,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651482636] [2022-07-19 21:28:04,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651482636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:04,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:04,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:28:04,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552935173] [2022-07-19 21:28:04,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:04,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:28:04,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:04,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:28:04,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:28:04,426 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:28:04,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 436 transitions, 12489 flow. Second operand has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 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 21:28:04,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:04,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:28:04,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:05,431 INFO L129 PetriNetUnfolder]: 554/5176 cut-off events. [2022-07-19 21:28:05,432 INFO L130 PetriNetUnfolder]: For 62104/73712 co-relation queries the response was YES. [2022-07-19 21:28:05,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16396 conditions, 5176 events. 554/5176 cut-off events. For 62104/73712 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 67173 event pairs, 146 based on Foata normal form. 158/5134 useless extension candidates. Maximal degree in co-relation 15728. Up to 674 conditions per place. [2022-07-19 21:28:05,498 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 21 selfloop transitions, 0 changer transitions 132/456 dead transitions. [2022-07-19 21:28:05,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 456 transitions, 12626 flow [2022-07-19 21:28:05,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:28:05,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:28:05,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 916 transitions. [2022-07-19 21:28:05,500 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8207885304659498 [2022-07-19 21:28:05,500 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 916 transitions. [2022-07-19 21:28:05,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 916 transitions. [2022-07-19 21:28:05,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:05,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 916 transitions. [2022-07-19 21:28:05,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 101.77777777777777) internal successors, (916), 9 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:05,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:05,502 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:05,502 INFO L186 Difference]: Start difference. First operand has 333 places, 436 transitions, 12489 flow. Second operand 9 states and 916 transitions. [2022-07-19 21:28:05,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 456 transitions, 12626 flow [2022-07-19 21:28:05,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 456 transitions, 12439 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-07-19 21:28:05,783 INFO L242 Difference]: Finished difference. Result has 344 places, 324 transitions, 8284 flow [2022-07-19 21:28:05,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12302, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8284, PETRI_PLACES=344, PETRI_TRANSITIONS=324} [2022-07-19 21:28:05,783 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 232 predicate places. [2022-07-19 21:28:05,783 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 324 transitions, 8284 flow [2022-07-19 21:28:05,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 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 21:28:05,784 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:05,784 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] [2022-07-19 21:28:05,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-19 21:28:05,784 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:05,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:05,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1042991530, now seen corresponding path program 1 times [2022-07-19 21:28:05,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:05,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408134383] [2022-07-19 21:28:05,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:05,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:05,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:05,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408134383] [2022-07-19 21:28:05,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408134383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:05,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:05,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:05,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906963749] [2022-07-19 21:28:05,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:05,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:05,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:05,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:05,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:05,849 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:05,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 324 transitions, 8284 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:05,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:05,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:05,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:07,540 INFO L129 PetriNetUnfolder]: 3297/9024 cut-off events. [2022-07-19 21:28:07,540 INFO L130 PetriNetUnfolder]: For 37995/43298 co-relation queries the response was YES. [2022-07-19 21:28:07,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24673 conditions, 9024 events. 3297/9024 cut-off events. For 37995/43298 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 102334 event pairs, 2389 based on Foata normal form. 8/8456 useless extension candidates. Maximal degree in co-relation 24569. Up to 5778 conditions per place. [2022-07-19 21:28:07,667 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 68 selfloop transitions, 24 changer transitions 16/392 dead transitions. [2022-07-19 21:28:07,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 392 transitions, 8737 flow [2022-07-19 21:28:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:28:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:28:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1519 transitions. [2022-07-19 21:28:07,669 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.765625 [2022-07-19 21:28:07,669 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1519 transitions. [2022-07-19 21:28:07,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1519 transitions. [2022-07-19 21:28:07,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:07,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1519 transitions. [2022-07-19 21:28:07,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.9375) internal successors, (1519), 16 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:07,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:07,673 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:07,673 INFO L186 Difference]: Start difference. First operand has 344 places, 324 transitions, 8284 flow. Second operand 16 states and 1519 transitions. [2022-07-19 21:28:07,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 392 transitions, 8737 flow [2022-07-19 21:28:07,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 392 transitions, 8102 flow, removed 97 selfloop flow, removed 26 redundant places. [2022-07-19 21:28:07,820 INFO L242 Difference]: Finished difference. Result has 332 places, 348 transitions, 7863 flow [2022-07-19 21:28:07,820 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7655, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7863, PETRI_PLACES=332, PETRI_TRANSITIONS=348} [2022-07-19 21:28:07,820 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 220 predicate places. [2022-07-19 21:28:07,821 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 348 transitions, 7863 flow [2022-07-19 21:28:07,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:07,821 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:07,821 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] [2022-07-19 21:28:07,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-19 21:28:07,821 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:07,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:07,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1682294116, now seen corresponding path program 1 times [2022-07-19 21:28:07,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:07,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12124048] [2022-07-19 21:28:07,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:07,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:07,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:07,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12124048] [2022-07-19 21:28:07,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12124048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:07,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:07,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:28:07,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319471117] [2022-07-19 21:28:07,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:07,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:28:07,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:07,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:28:07,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:28:07,861 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-07-19 21:28:07,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 348 transitions, 7863 flow. Second operand has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 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 21:28:07,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:07,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-07-19 21:28:07,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:08,377 INFO L129 PetriNetUnfolder]: 349/2843 cut-off events. [2022-07-19 21:28:08,377 INFO L130 PetriNetUnfolder]: For 29788/34746 co-relation queries the response was YES. [2022-07-19 21:28:08,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9954 conditions, 2843 events. 349/2843 cut-off events. For 29788/34746 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 32281 event pairs, 62 based on Foata normal form. 85/2817 useless extension candidates. Maximal degree in co-relation 9855. Up to 284 conditions per place. [2022-07-19 21:28:08,413 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 19 selfloop transitions, 0 changer transitions 169/367 dead transitions. [2022-07-19 21:28:08,413 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 367 transitions, 7994 flow [2022-07-19 21:28:08,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:28:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:28:08,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 914 transitions. [2022-07-19 21:28:08,414 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8189964157706093 [2022-07-19 21:28:08,415 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 914 transitions. [2022-07-19 21:28:08,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 914 transitions. [2022-07-19 21:28:08,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:08,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 914 transitions. [2022-07-19 21:28:08,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 101.55555555555556) internal successors, (914), 9 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:08,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:08,417 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:08,417 INFO L186 Difference]: Start difference. First operand has 332 places, 348 transitions, 7863 flow. Second operand 9 states and 914 transitions. [2022-07-19 21:28:08,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 367 transitions, 7994 flow [2022-07-19 21:28:08,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 367 transitions, 7944 flow, removed 25 selfloop flow, removed 2 redundant places. [2022-07-19 21:28:08,544 INFO L242 Difference]: Finished difference. Result has 342 places, 198 transitions, 3104 flow [2022-07-19 21:28:08,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7813, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3104, PETRI_PLACES=342, PETRI_TRANSITIONS=198} [2022-07-19 21:28:08,546 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 230 predicate places. [2022-07-19 21:28:08,546 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 198 transitions, 3104 flow [2022-07-19 21:28:08,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 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 21:28:08,546 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:08,546 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] [2022-07-19 21:28:08,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-19 21:28:08,547 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:08,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:08,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1324255288, now seen corresponding path program 2 times [2022-07-19 21:28:08,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:08,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140431885] [2022-07-19 21:28:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:08,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:08,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:08,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140431885] [2022-07-19 21:28:08,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140431885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:08,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:08,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:08,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543583941] [2022-07-19 21:28:08,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:08,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:08,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:08,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:08,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:08,621 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:08,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 198 transitions, 3104 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:08,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:08,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:08,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:09,248 INFO L129 PetriNetUnfolder]: 1205/3227 cut-off events. [2022-07-19 21:28:09,248 INFO L130 PetriNetUnfolder]: For 10461/10779 co-relation queries the response was YES. [2022-07-19 21:28:09,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10610 conditions, 3227 events. 1205/3227 cut-off events. For 10461/10779 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 29900 event pairs, 425 based on Foata normal form. 3/3112 useless extension candidates. Maximal degree in co-relation 10506. Up to 1139 conditions per place. [2022-07-19 21:28:09,302 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 82 selfloop transitions, 31 changer transitions 16/273 dead transitions. [2022-07-19 21:28:09,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 273 transitions, 3748 flow [2022-07-19 21:28:09,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:28:09,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:28:09,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1610 transitions. [2022-07-19 21:28:09,303 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7637571157495257 [2022-07-19 21:28:09,303 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1610 transitions. [2022-07-19 21:28:09,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1610 transitions. [2022-07-19 21:28:09,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:09,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1610 transitions. [2022-07-19 21:28:09,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.70588235294117) internal successors, (1610), 17 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:09,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:09,307 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:09,307 INFO L186 Difference]: Start difference. First operand has 342 places, 198 transitions, 3104 flow. Second operand 17 states and 1610 transitions. [2022-07-19 21:28:09,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 273 transitions, 3748 flow [2022-07-19 21:28:09,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 273 transitions, 2872 flow, removed 110 selfloop flow, removed 63 redundant places. [2022-07-19 21:28:09,356 INFO L242 Difference]: Finished difference. Result has 264 places, 226 transitions, 2568 flow [2022-07-19 21:28:09,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2263, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2568, PETRI_PLACES=264, PETRI_TRANSITIONS=226} [2022-07-19 21:28:09,356 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 152 predicate places. [2022-07-19 21:28:09,356 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 226 transitions, 2568 flow [2022-07-19 21:28:09,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:09,357 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:09,357 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] [2022-07-19 21:28:09,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-19 21:28:09,357 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:09,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1840800024, now seen corresponding path program 3 times [2022-07-19 21:28:09,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:09,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415609187] [2022-07-19 21:28:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:09,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:09,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415609187] [2022-07-19 21:28:09,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415609187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:09,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:09,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:09,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279526070] [2022-07-19 21:28:09,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:09,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:09,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:09,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:09,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:09,442 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:09,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 226 transitions, 2568 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:09,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:09,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:09,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:10,141 INFO L129 PetriNetUnfolder]: 1318/3586 cut-off events. [2022-07-19 21:28:10,142 INFO L130 PetriNetUnfolder]: For 9826/10021 co-relation queries the response was YES. [2022-07-19 21:28:10,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13110 conditions, 3586 events. 1318/3586 cut-off events. For 9826/10021 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 34540 event pairs, 319 based on Foata normal form. 13/3497 useless extension candidates. Maximal degree in co-relation 13042. Up to 821 conditions per place. [2022-07-19 21:28:10,174 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 112 selfloop transitions, 50 changer transitions 28/334 dead transitions. [2022-07-19 21:28:10,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 334 transitions, 3626 flow [2022-07-19 21:28:10,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:28:10,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:28:10,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2264 transitions. [2022-07-19 21:28:10,176 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2022-07-19 21:28:10,176 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2264 transitions. [2022-07-19 21:28:10,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2264 transitions. [2022-07-19 21:28:10,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:10,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2264 transitions. [2022-07-19 21:28:10,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.33333333333333) internal successors, (2264), 24 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:10,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:10,180 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:10,180 INFO L186 Difference]: Start difference. First operand has 264 places, 226 transitions, 2568 flow. Second operand 24 states and 2264 transitions. [2022-07-19 21:28:10,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 334 transitions, 3626 flow [2022-07-19 21:28:10,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 334 transitions, 3526 flow, removed 43 selfloop flow, removed 4 redundant places. [2022-07-19 21:28:10,237 INFO L242 Difference]: Finished difference. Result has 301 places, 255 transitions, 2981 flow [2022-07-19 21:28:10,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2490, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2981, PETRI_PLACES=301, PETRI_TRANSITIONS=255} [2022-07-19 21:28:10,237 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 189 predicate places. [2022-07-19 21:28:10,237 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 255 transitions, 2981 flow [2022-07-19 21:28:10,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:10,238 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:10,238 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:10,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-19 21:28:10,238 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:10,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:10,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1467293538, now seen corresponding path program 1 times [2022-07-19 21:28:10,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:10,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399434458] [2022-07-19 21:28:10,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:10,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:10,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:10,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399434458] [2022-07-19 21:28:10,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399434458] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:10,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:10,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:10,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133138231] [2022-07-19 21:28:10,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:10,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:10,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:10,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:10,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:10,331 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:10,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 255 transitions, 2981 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:10,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:10,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:10,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:11,063 INFO L129 PetriNetUnfolder]: 1424/3893 cut-off events. [2022-07-19 21:28:11,063 INFO L130 PetriNetUnfolder]: For 15725/15919 co-relation queries the response was YES. [2022-07-19 21:28:11,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15864 conditions, 3893 events. 1424/3893 cut-off events. For 15725/15919 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 38061 event pairs, 497 based on Foata normal form. 5/3787 useless extension candidates. Maximal degree in co-relation 15779. Up to 2035 conditions per place. [2022-07-19 21:28:11,114 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 146 selfloop transitions, 31 changer transitions 28/349 dead transitions. [2022-07-19 21:28:11,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 349 transitions, 3764 flow [2022-07-19 21:28:11,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:28:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:28:11,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2264 transitions. [2022-07-19 21:28:11,116 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2022-07-19 21:28:11,116 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2264 transitions. [2022-07-19 21:28:11,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2264 transitions. [2022-07-19 21:28:11,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:11,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2264 transitions. [2022-07-19 21:28:11,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.33333333333333) internal successors, (2264), 24 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:11,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:11,120 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:11,120 INFO L186 Difference]: Start difference. First operand has 301 places, 255 transitions, 2981 flow. Second operand 24 states and 2264 transitions. [2022-07-19 21:28:11,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 349 transitions, 3764 flow [2022-07-19 21:28:11,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 349 transitions, 3612 flow, removed 76 selfloop flow, removed 2 redundant places. [2022-07-19 21:28:11,218 INFO L242 Difference]: Finished difference. Result has 338 places, 280 transitions, 3124 flow [2022-07-19 21:28:11,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2875, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3124, PETRI_PLACES=338, PETRI_TRANSITIONS=280} [2022-07-19 21:28:11,218 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 226 predicate places. [2022-07-19 21:28:11,218 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 280 transitions, 3124 flow [2022-07-19 21:28:11,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:11,218 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:11,219 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] [2022-07-19 21:28:11,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-19 21:28:11,219 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:11,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:11,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2060971002, now seen corresponding path program 2 times [2022-07-19 21:28:11,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:11,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014188066] [2022-07-19 21:28:11,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:11,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:11,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:11,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014188066] [2022-07-19 21:28:11,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014188066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:11,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:11,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:11,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160163128] [2022-07-19 21:28:11,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:11,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:11,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:11,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:11,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:11,290 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:11,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 280 transitions, 3124 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:11,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:11,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:11,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:12,140 INFO L129 PetriNetUnfolder]: 1702/4499 cut-off events. [2022-07-19 21:28:12,140 INFO L130 PetriNetUnfolder]: For 17860/18055 co-relation queries the response was YES. [2022-07-19 21:28:12,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18845 conditions, 4499 events. 1702/4499 cut-off events. For 17860/18055 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 45208 event pairs, 573 based on Foata normal form. 3/4362 useless extension candidates. Maximal degree in co-relation 18743. Up to 2338 conditions per place. [2022-07-19 21:28:12,205 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 148 selfloop transitions, 41 changer transitions 16/349 dead transitions. [2022-07-19 21:28:12,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 349 transitions, 4008 flow [2022-07-19 21:28:12,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:28:12,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:28:12,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1610 transitions. [2022-07-19 21:28:12,207 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7637571157495257 [2022-07-19 21:28:12,207 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1610 transitions. [2022-07-19 21:28:12,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1610 transitions. [2022-07-19 21:28:12,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:12,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1610 transitions. [2022-07-19 21:28:12,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.70588235294117) internal successors, (1610), 17 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:12,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:12,210 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:12,210 INFO L186 Difference]: Start difference. First operand has 338 places, 280 transitions, 3124 flow. Second operand 17 states and 1610 transitions. [2022-07-19 21:28:12,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 349 transitions, 4008 flow [2022-07-19 21:28:12,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 349 transitions, 3766 flow, removed 56 selfloop flow, removed 10 redundant places. [2022-07-19 21:28:12,324 INFO L242 Difference]: Finished difference. Result has 354 places, 307 transitions, 3354 flow [2022-07-19 21:28:12,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2962, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3354, PETRI_PLACES=354, PETRI_TRANSITIONS=307} [2022-07-19 21:28:12,325 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 242 predicate places. [2022-07-19 21:28:12,325 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 307 transitions, 3354 flow [2022-07-19 21:28:12,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:12,325 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:12,325 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] [2022-07-19 21:28:12,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-19 21:28:12,325 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:12,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:12,326 INFO L85 PathProgramCache]: Analyzing trace with hash -820194130, now seen corresponding path program 3 times [2022-07-19 21:28:12,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:12,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045285536] [2022-07-19 21:28:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:12,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:12,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:12,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:12,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045285536] [2022-07-19 21:28:12,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045285536] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:12,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:12,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:12,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834657173] [2022-07-19 21:28:12,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:12,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:12,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:12,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:12,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:12,394 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:12,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 307 transitions, 3354 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:12,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:12,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:12,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:13,467 INFO L129 PetriNetUnfolder]: 1844/4856 cut-off events. [2022-07-19 21:28:13,467 INFO L130 PetriNetUnfolder]: For 19882/20090 co-relation queries the response was YES. [2022-07-19 21:28:13,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20251 conditions, 4856 events. 1844/4856 cut-off events. For 19882/20090 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 49018 event pairs, 555 based on Foata normal form. 3/4723 useless extension candidates. Maximal degree in co-relation 20142. Up to 2366 conditions per place. [2022-07-19 21:28:13,516 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 162 selfloop transitions, 49 changer transitions 16/371 dead transitions. [2022-07-19 21:28:13,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 371 transitions, 4227 flow [2022-07-19 21:28:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:28:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:28:13,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1517 transitions. [2022-07-19 21:28:13,518 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.764616935483871 [2022-07-19 21:28:13,518 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1517 transitions. [2022-07-19 21:28:13,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1517 transitions. [2022-07-19 21:28:13,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:13,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1517 transitions. [2022-07-19 21:28:13,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.8125) internal successors, (1517), 16 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:13,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:13,521 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:13,521 INFO L186 Difference]: Start difference. First operand has 354 places, 307 transitions, 3354 flow. Second operand 16 states and 1517 transitions. [2022-07-19 21:28:13,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 371 transitions, 4227 flow [2022-07-19 21:28:13,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 371 transitions, 4057 flow, removed 85 selfloop flow, removed 2 redundant places. [2022-07-19 21:28:13,650 INFO L242 Difference]: Finished difference. Result has 375 places, 327 transitions, 3569 flow [2022-07-19 21:28:13,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3230, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3569, PETRI_PLACES=375, PETRI_TRANSITIONS=327} [2022-07-19 21:28:13,651 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 263 predicate places. [2022-07-19 21:28:13,651 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 327 transitions, 3569 flow [2022-07-19 21:28:13,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:13,651 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:13,651 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] [2022-07-19 21:28:13,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-19 21:28:13,651 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:13,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:13,652 INFO L85 PathProgramCache]: Analyzing trace with hash -629497636, now seen corresponding path program 4 times [2022-07-19 21:28:13,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:13,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141776453] [2022-07-19 21:28:13,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:13,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:13,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:13,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141776453] [2022-07-19 21:28:13,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141776453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:13,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:13,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:13,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002871064] [2022-07-19 21:28:13,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:13,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:13,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:13,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:13,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:13,713 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:13,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 327 transitions, 3569 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:13,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:13,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:13,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:14,749 INFO L129 PetriNetUnfolder]: 1942/5241 cut-off events. [2022-07-19 21:28:14,749 INFO L130 PetriNetUnfolder]: For 21496/21703 co-relation queries the response was YES. [2022-07-19 21:28:14,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22178 conditions, 5241 events. 1942/5241 cut-off events. For 21496/21703 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 54655 event pairs, 515 based on Foata normal form. 3/5112 useless extension candidates. Maximal degree in co-relation 22060. Up to 2097 conditions per place. [2022-07-19 21:28:14,831 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 182 selfloop transitions, 74 changer transitions 26/426 dead transitions. [2022-07-19 21:28:14,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 426 transitions, 4815 flow [2022-07-19 21:28:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:28:14,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:28:14,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2261 transitions. [2022-07-19 21:28:14,834 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.759744623655914 [2022-07-19 21:28:14,834 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2261 transitions. [2022-07-19 21:28:14,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2261 transitions. [2022-07-19 21:28:14,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:14,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2261 transitions. [2022-07-19 21:28:14,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.20833333333333) internal successors, (2261), 24 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:14,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:14,838 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:14,838 INFO L186 Difference]: Start difference. First operand has 375 places, 327 transitions, 3569 flow. Second operand 24 states and 2261 transitions. [2022-07-19 21:28:14,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 426 transitions, 4815 flow [2022-07-19 21:28:15,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 426 transitions, 4552 flow, removed 101 selfloop flow, removed 5 redundant places. [2022-07-19 21:28:15,012 INFO L242 Difference]: Finished difference. Result has 410 places, 353 transitions, 3903 flow [2022-07-19 21:28:15,012 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3383, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3903, PETRI_PLACES=410, PETRI_TRANSITIONS=353} [2022-07-19 21:28:15,012 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 298 predicate places. [2022-07-19 21:28:15,012 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 353 transitions, 3903 flow [2022-07-19 21:28:15,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:15,013 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:15,013 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] [2022-07-19 21:28:15,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-19 21:28:15,013 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:15,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:15,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1958380388, now seen corresponding path program 5 times [2022-07-19 21:28:15,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:15,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804445925] [2022-07-19 21:28:15,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:15,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:15,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:15,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:15,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804445925] [2022-07-19 21:28:15,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804445925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:15,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:15,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:15,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31557294] [2022-07-19 21:28:15,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:15,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:15,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:15,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:15,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:15,078 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:15,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 353 transitions, 3903 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:15,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:15,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:15,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:16,290 INFO L129 PetriNetUnfolder]: 2174/5876 cut-off events. [2022-07-19 21:28:16,290 INFO L130 PetriNetUnfolder]: For 30355/30596 co-relation queries the response was YES. [2022-07-19 21:28:16,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26213 conditions, 5876 events. 2174/5876 cut-off events. For 30355/30596 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 62203 event pairs, 595 based on Foata normal form. 25/5751 useless extension candidates. Maximal degree in co-relation 26080. Up to 2617 conditions per place. [2022-07-19 21:28:16,382 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 199 selfloop transitions, 73 changer transitions 24/440 dead transitions. [2022-07-19 21:28:16,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 440 transitions, 5385 flow [2022-07-19 21:28:16,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:28:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:28:16,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2071 transitions. [2022-07-19 21:28:16,384 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7591642228739003 [2022-07-19 21:28:16,384 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2071 transitions. [2022-07-19 21:28:16,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2071 transitions. [2022-07-19 21:28:16,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:16,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2071 transitions. [2022-07-19 21:28:16,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.13636363636364) internal successors, (2071), 22 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:16,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:16,389 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:16,389 INFO L186 Difference]: Start difference. First operand has 410 places, 353 transitions, 3903 flow. Second operand 22 states and 2071 transitions. [2022-07-19 21:28:16,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 440 transitions, 5385 flow [2022-07-19 21:28:16,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 440 transitions, 5299 flow, removed 40 selfloop flow, removed 3 redundant places. [2022-07-19 21:28:16,591 INFO L242 Difference]: Finished difference. Result has 441 places, 384 transitions, 4515 flow [2022-07-19 21:28:16,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3820, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4515, PETRI_PLACES=441, PETRI_TRANSITIONS=384} [2022-07-19 21:28:16,592 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 329 predicate places. [2022-07-19 21:28:16,592 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 384 transitions, 4515 flow [2022-07-19 21:28:16,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:16,592 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:16,592 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] [2022-07-19 21:28:16,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-19 21:28:16,593 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:16,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:16,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1601681310, now seen corresponding path program 6 times [2022-07-19 21:28:16,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:16,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975417152] [2022-07-19 21:28:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:16,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:16,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:16,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975417152] [2022-07-19 21:28:16,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975417152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:16,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:16,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:16,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468156583] [2022-07-19 21:28:16,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:16,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:16,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:16,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:16,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:16,660 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:16,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 384 transitions, 4515 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:16,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:16,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:16,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:17,957 INFO L129 PetriNetUnfolder]: 2260/6252 cut-off events. [2022-07-19 21:28:17,958 INFO L130 PetriNetUnfolder]: For 43354/43583 co-relation queries the response was YES. [2022-07-19 21:28:18,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29793 conditions, 6252 events. 2260/6252 cut-off events. For 43354/43583 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 67626 event pairs, 674 based on Foata normal form. 5/6098 useless extension candidates. Maximal degree in co-relation 29647. Up to 2680 conditions per place. [2022-07-19 21:28:18,065 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 218 selfloop transitions, 74 changer transitions 23/459 dead transitions. [2022-07-19 21:28:18,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 459 transitions, 6042 flow [2022-07-19 21:28:18,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:28:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:28:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1982 transitions. [2022-07-19 21:28:18,067 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.761136712749616 [2022-07-19 21:28:18,067 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1982 transitions. [2022-07-19 21:28:18,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1982 transitions. [2022-07-19 21:28:18,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:18,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1982 transitions. [2022-07-19 21:28:18,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.38095238095238) internal successors, (1982), 21 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:18,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:18,071 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:18,071 INFO L186 Difference]: Start difference. First operand has 441 places, 384 transitions, 4515 flow. Second operand 21 states and 1982 transitions. [2022-07-19 21:28:18,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 459 transitions, 6042 flow [2022-07-19 21:28:18,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 459 transitions, 5809 flow, removed 103 selfloop flow, removed 3 redundant places. [2022-07-19 21:28:18,351 INFO L242 Difference]: Finished difference. Result has 471 places, 412 transitions, 5041 flow [2022-07-19 21:28:18,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4300, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5041, PETRI_PLACES=471, PETRI_TRANSITIONS=412} [2022-07-19 21:28:18,352 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 359 predicate places. [2022-07-19 21:28:18,352 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 412 transitions, 5041 flow [2022-07-19 21:28:18,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:18,352 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:18,352 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] [2022-07-19 21:28:18,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-19 21:28:18,352 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:18,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:18,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1046108190, now seen corresponding path program 7 times [2022-07-19 21:28:18,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:18,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122577537] [2022-07-19 21:28:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:18,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:18,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:18,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122577537] [2022-07-19 21:28:18,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122577537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:18,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:18,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:18,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182265861] [2022-07-19 21:28:18,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:18,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:18,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:18,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:18,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:18,416 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:18,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 412 transitions, 5041 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:18,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:18,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:18,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:20,016 INFO L129 PetriNetUnfolder]: 2333/6496 cut-off events. [2022-07-19 21:28:20,016 INFO L130 PetriNetUnfolder]: For 54738/54966 co-relation queries the response was YES. [2022-07-19 21:28:20,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32199 conditions, 6496 events. 2333/6496 cut-off events. For 54738/54966 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 71310 event pairs, 624 based on Foata normal form. 4/6347 useless extension candidates. Maximal degree in co-relation 32040. Up to 2671 conditions per place. [2022-07-19 21:28:20,110 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 238 selfloop transitions, 82 changer transitions 22/486 dead transitions. [2022-07-19 21:28:20,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 486 transitions, 6663 flow [2022-07-19 21:28:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:28:20,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:28:20,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1889 transitions. [2022-07-19 21:28:20,112 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7616935483870968 [2022-07-19 21:28:20,112 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1889 transitions. [2022-07-19 21:28:20,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1889 transitions. [2022-07-19 21:28:20,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:20,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1889 transitions. [2022-07-19 21:28:20,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.45) internal successors, (1889), 20 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:20,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:20,116 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:20,116 INFO L186 Difference]: Start difference. First operand has 471 places, 412 transitions, 5041 flow. Second operand 20 states and 1889 transitions. [2022-07-19 21:28:20,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 486 transitions, 6663 flow [2022-07-19 21:28:20,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 486 transitions, 6381 flow, removed 126 selfloop flow, removed 3 redundant places. [2022-07-19 21:28:20,472 INFO L242 Difference]: Finished difference. Result has 500 places, 445 transitions, 5712 flow [2022-07-19 21:28:20,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4781, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5712, PETRI_PLACES=500, PETRI_TRANSITIONS=445} [2022-07-19 21:28:20,473 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 388 predicate places. [2022-07-19 21:28:20,473 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 445 transitions, 5712 flow [2022-07-19 21:28:20,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:20,473 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:20,473 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] [2022-07-19 21:28:20,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-19 21:28:20,474 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:20,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:20,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1815561746, now seen corresponding path program 8 times [2022-07-19 21:28:20,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:20,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806919326] [2022-07-19 21:28:20,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:20,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:20,534 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 21:28:20,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:20,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806919326] [2022-07-19 21:28:20,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806919326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:20,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:20,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:20,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883797758] [2022-07-19 21:28:20,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:20,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:20,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:20,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:20,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:20,537 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:20,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 445 transitions, 5712 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:20,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:20,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:20,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:22,123 INFO L129 PetriNetUnfolder]: 2391/6807 cut-off events. [2022-07-19 21:28:22,123 INFO L130 PetriNetUnfolder]: For 59476/59724 co-relation queries the response was YES. [2022-07-19 21:28:22,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33963 conditions, 6807 events. 2391/6807 cut-off events. For 59476/59724 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 75984 event pairs, 606 based on Foata normal form. 15/6671 useless extension candidates. Maximal degree in co-relation 33791. Up to 3000 conditions per place. [2022-07-19 21:28:22,253 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 237 selfloop transitions, 105 changer transitions 14/500 dead transitions. [2022-07-19 21:28:22,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 500 transitions, 7107 flow [2022-07-19 21:28:22,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:28:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:28:22,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1514 transitions. [2022-07-19 21:28:22,255 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7631048387096774 [2022-07-19 21:28:22,255 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1514 transitions. [2022-07-19 21:28:22,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1514 transitions. [2022-07-19 21:28:22,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:22,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1514 transitions. [2022-07-19 21:28:22,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.625) internal successors, (1514), 16 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:22,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:22,259 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:22,259 INFO L186 Difference]: Start difference. First operand has 500 places, 445 transitions, 5712 flow. Second operand 16 states and 1514 transitions. [2022-07-19 21:28:22,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 500 transitions, 7107 flow [2022-07-19 21:28:22,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 500 transitions, 6729 flow, removed 189 selfloop flow, removed 2 redundant places. [2022-07-19 21:28:22,726 INFO L242 Difference]: Finished difference. Result has 519 places, 463 transitions, 5914 flow [2022-07-19 21:28:22,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5362, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5914, PETRI_PLACES=519, PETRI_TRANSITIONS=463} [2022-07-19 21:28:22,727 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 407 predicate places. [2022-07-19 21:28:22,727 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 463 transitions, 5914 flow [2022-07-19 21:28:22,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:22,727 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:22,727 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] [2022-07-19 21:28:22,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-19 21:28:22,727 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:22,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:22,728 INFO L85 PathProgramCache]: Analyzing trace with hash -363943892, now seen corresponding path program 9 times [2022-07-19 21:28:22,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:22,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269527493] [2022-07-19 21:28:22,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:22,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:22,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:22,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269527493] [2022-07-19 21:28:22,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269527493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:22,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:22,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:22,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952240373] [2022-07-19 21:28:22,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:22,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:22,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:22,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:22,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:22,812 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:22,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 463 transitions, 5914 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:22,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:22,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:22,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:24,493 INFO L129 PetriNetUnfolder]: 2482/6997 cut-off events. [2022-07-19 21:28:24,493 INFO L130 PetriNetUnfolder]: For 54979/55228 co-relation queries the response was YES. [2022-07-19 21:28:24,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35041 conditions, 6997 events. 2482/6997 cut-off events. For 54979/55228 co-relation queries the response was YES. Maximal size of possible extension queue 980. Compared 78102 event pairs, 652 based on Foata normal form. 5/6830 useless extension candidates. Maximal degree in co-relation 34862. Up to 3071 conditions per place. [2022-07-19 21:28:24,631 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 247 selfloop transitions, 119 changer transitions 19/529 dead transitions. [2022-07-19 21:28:24,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 529 transitions, 7417 flow [2022-07-19 21:28:24,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:28:24,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:28:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1885 transitions. [2022-07-19 21:28:24,633 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7600806451612904 [2022-07-19 21:28:24,633 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1885 transitions. [2022-07-19 21:28:24,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1885 transitions. [2022-07-19 21:28:24,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:24,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1885 transitions. [2022-07-19 21:28:24,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.25) internal successors, (1885), 20 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:24,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:24,637 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:24,637 INFO L186 Difference]: Start difference. First operand has 519 places, 463 transitions, 5914 flow. Second operand 20 states and 1885 transitions. [2022-07-19 21:28:24,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 529 transitions, 7417 flow [2022-07-19 21:28:25,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 529 transitions, 7260 flow, removed 55 selfloop flow, removed 3 redundant places. [2022-07-19 21:28:25,096 INFO L242 Difference]: Finished difference. Result has 546 places, 489 transitions, 6586 flow [2022-07-19 21:28:25,097 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5776, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6586, PETRI_PLACES=546, PETRI_TRANSITIONS=489} [2022-07-19 21:28:25,097 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 434 predicate places. [2022-07-19 21:28:25,097 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 489 transitions, 6586 flow [2022-07-19 21:28:25,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:25,097 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:25,098 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] [2022-07-19 21:28:25,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-19 21:28:25,098 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:25,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:25,098 INFO L85 PathProgramCache]: Analyzing trace with hash 164438094, now seen corresponding path program 10 times [2022-07-19 21:28:25,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:25,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217795764] [2022-07-19 21:28:25,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:25,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:25,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:25,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217795764] [2022-07-19 21:28:25,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217795764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:25,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:25,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:25,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673819143] [2022-07-19 21:28:25,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:25,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:25,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:25,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:25,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:25,189 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:25,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 489 transitions, 6586 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:25,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:25,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:25,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:27,082 INFO L129 PetriNetUnfolder]: 2492/7133 cut-off events. [2022-07-19 21:28:27,082 INFO L130 PetriNetUnfolder]: For 59062/59372 co-relation queries the response was YES. [2022-07-19 21:28:27,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36503 conditions, 7133 events. 2492/7133 cut-off events. For 59062/59372 co-relation queries the response was YES. Maximal size of possible extension queue 991. Compared 79847 event pairs, 633 based on Foata normal form. 32/7009 useless extension candidates. Maximal degree in co-relation 36313. Up to 3063 conditions per place. [2022-07-19 21:28:27,202 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 246 selfloop transitions, 124 changer transitions 24/538 dead transitions. [2022-07-19 21:28:27,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 538 transitions, 8029 flow [2022-07-19 21:28:27,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:28:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:28:27,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1699 transitions. [2022-07-19 21:28:27,206 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7612007168458781 [2022-07-19 21:28:27,206 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1699 transitions. [2022-07-19 21:28:27,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1699 transitions. [2022-07-19 21:28:27,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:27,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1699 transitions. [2022-07-19 21:28:27,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.38888888888889) internal successors, (1699), 18 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:27,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:27,209 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:27,209 INFO L186 Difference]: Start difference. First operand has 546 places, 489 transitions, 6586 flow. Second operand 18 states and 1699 transitions. [2022-07-19 21:28:27,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 538 transitions, 8029 flow [2022-07-19 21:28:27,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 538 transitions, 7825 flow, removed 78 selfloop flow, removed 3 redundant places. [2022-07-19 21:28:27,674 INFO L242 Difference]: Finished difference. Result has 565 places, 498 transitions, 6960 flow [2022-07-19 21:28:27,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6465, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6960, PETRI_PLACES=565, PETRI_TRANSITIONS=498} [2022-07-19 21:28:27,675 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 453 predicate places. [2022-07-19 21:28:27,675 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 498 transitions, 6960 flow [2022-07-19 21:28:27,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:27,675 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:27,675 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:27,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-19 21:28:27,676 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:27,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash -579980082, now seen corresponding path program 11 times [2022-07-19 21:28:27,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:27,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860878192] [2022-07-19 21:28:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:27,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:27,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:27,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860878192] [2022-07-19 21:28:27,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860878192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:27,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:27,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:27,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030838842] [2022-07-19 21:28:27,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:27,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:27,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:27,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:27,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:27,760 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:27,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 498 transitions, 6960 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:27,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:27,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:27,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:29,823 INFO L129 PetriNetUnfolder]: 2529/7270 cut-off events. [2022-07-19 21:28:29,824 INFO L130 PetriNetUnfolder]: For 58821/59069 co-relation queries the response was YES. [2022-07-19 21:28:29,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37785 conditions, 7270 events. 2529/7270 cut-off events. For 58821/59069 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 82052 event pairs, 649 based on Foata normal form. 9/7124 useless extension candidates. Maximal degree in co-relation 37590. Up to 3124 conditions per place. [2022-07-19 21:28:29,937 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 281 selfloop transitions, 109 changer transitions 17/551 dead transitions. [2022-07-19 21:28:29,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 551 transitions, 8474 flow [2022-07-19 21:28:29,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:28:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:28:29,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1704 transitions. [2022-07-19 21:28:29,939 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2022-07-19 21:28:29,939 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1704 transitions. [2022-07-19 21:28:29,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1704 transitions. [2022-07-19 21:28:29,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:29,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1704 transitions. [2022-07-19 21:28:29,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.66666666666667) internal successors, (1704), 18 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:29,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:29,943 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:29,943 INFO L186 Difference]: Start difference. First operand has 565 places, 498 transitions, 6960 flow. Second operand 18 states and 1704 transitions. [2022-07-19 21:28:29,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 551 transitions, 8474 flow [2022-07-19 21:28:30,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 551 transitions, 8278 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-07-19 21:28:30,423 INFO L242 Difference]: Finished difference. Result has 580 places, 518 transitions, 7515 flow [2022-07-19 21:28:30,423 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6774, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7515, PETRI_PLACES=580, PETRI_TRANSITIONS=518} [2022-07-19 21:28:30,424 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 468 predicate places. [2022-07-19 21:28:30,424 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 518 transitions, 7515 flow [2022-07-19 21:28:30,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:30,424 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:30,424 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] [2022-07-19 21:28:30,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-19 21:28:30,424 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:30,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:30,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2115569696, now seen corresponding path program 12 times [2022-07-19 21:28:30,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:30,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663970798] [2022-07-19 21:28:30,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:30,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:30,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:30,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:30,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663970798] [2022-07-19 21:28:30,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663970798] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:30,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:30,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:30,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228111451] [2022-07-19 21:28:30,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:30,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:30,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:30,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:30,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:30,496 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:30,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 518 transitions, 7515 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:30,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:30,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:30,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:32,697 INFO L129 PetriNetUnfolder]: 2573/7583 cut-off events. [2022-07-19 21:28:32,698 INFO L130 PetriNetUnfolder]: For 59701/59950 co-relation queries the response was YES. [2022-07-19 21:28:32,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39362 conditions, 7583 events. 2573/7583 cut-off events. For 59701/59950 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 87365 event pairs, 667 based on Foata normal form. 5/7419 useless extension candidates. Maximal degree in co-relation 39164. Up to 3200 conditions per place. [2022-07-19 21:28:32,861 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 263 selfloop transitions, 133 changer transitions 20/560 dead transitions. [2022-07-19 21:28:32,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 560 transitions, 8788 flow [2022-07-19 21:28:32,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:28:32,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:28:32,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1700 transitions. [2022-07-19 21:28:32,863 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7616487455197133 [2022-07-19 21:28:32,864 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1700 transitions. [2022-07-19 21:28:32,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1700 transitions. [2022-07-19 21:28:32,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:32,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1700 transitions. [2022-07-19 21:28:32,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.44444444444444) internal successors, (1700), 18 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:32,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:32,867 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:32,867 INFO L186 Difference]: Start difference. First operand has 580 places, 518 transitions, 7515 flow. Second operand 18 states and 1700 transitions. [2022-07-19 21:28:32,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 560 transitions, 8788 flow [2022-07-19 21:28:33,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 560 transitions, 8567 flow, removed 103 selfloop flow, removed 6 redundant places. [2022-07-19 21:28:33,478 INFO L242 Difference]: Finished difference. Result has 595 places, 531 transitions, 7854 flow [2022-07-19 21:28:33,479 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7296, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7854, PETRI_PLACES=595, PETRI_TRANSITIONS=531} [2022-07-19 21:28:33,479 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 483 predicate places. [2022-07-19 21:28:33,479 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 531 transitions, 7854 flow [2022-07-19 21:28:33,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:33,480 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:33,480 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] [2022-07-19 21:28:33,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-19 21:28:33,480 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:33,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1418596208, now seen corresponding path program 13 times [2022-07-19 21:28:33,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:33,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807396748] [2022-07-19 21:28:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:33,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:33,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:33,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:33,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807396748] [2022-07-19 21:28:33,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807396748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:33,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:33,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:33,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878299211] [2022-07-19 21:28:33,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:33,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:33,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:33,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:33,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:33,551 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:33,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 531 transitions, 7854 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:33,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:33,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:33,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:35,902 INFO L129 PetriNetUnfolder]: 2565/7471 cut-off events. [2022-07-19 21:28:35,902 INFO L130 PetriNetUnfolder]: For 57002/57250 co-relation queries the response was YES. [2022-07-19 21:28:36,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39562 conditions, 7471 events. 2565/7471 cut-off events. For 57002/57250 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 85530 event pairs, 665 based on Foata normal form. 9/7323 useless extension candidates. Maximal degree in co-relation 39363. Up to 3215 conditions per place. [2022-07-19 21:28:36,086 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 280 selfloop transitions, 119 changer transitions 21/564 dead transitions. [2022-07-19 21:28:36,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 564 transitions, 8979 flow [2022-07-19 21:28:36,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:28:36,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:28:36,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1610 transitions. [2022-07-19 21:28:36,088 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7637571157495257 [2022-07-19 21:28:36,088 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1610 transitions. [2022-07-19 21:28:36,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1610 transitions. [2022-07-19 21:28:36,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:36,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1610 transitions. [2022-07-19 21:28:36,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.70588235294117) internal successors, (1610), 17 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:36,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:36,091 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:36,091 INFO L186 Difference]: Start difference. First operand has 595 places, 531 transitions, 7854 flow. Second operand 17 states and 1610 transitions. [2022-07-19 21:28:36,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 564 transitions, 8979 flow [2022-07-19 21:28:36,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 564 transitions, 8852 flow, removed 34 selfloop flow, removed 5 redundant places. [2022-07-19 21:28:36,664 INFO L242 Difference]: Finished difference. Result has 609 places, 537 transitions, 8107 flow [2022-07-19 21:28:36,665 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7733, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8107, PETRI_PLACES=609, PETRI_TRANSITIONS=537} [2022-07-19 21:28:36,665 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 497 predicate places. [2022-07-19 21:28:36,665 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 537 transitions, 8107 flow [2022-07-19 21:28:36,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:36,665 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:36,666 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] [2022-07-19 21:28:36,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-19 21:28:36,666 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:36,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:36,666 INFO L85 PathProgramCache]: Analyzing trace with hash -5158680, now seen corresponding path program 14 times [2022-07-19 21:28:36,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:36,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377023178] [2022-07-19 21:28:36,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:36,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:36,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:36,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:36,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377023178] [2022-07-19 21:28:36,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377023178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:36,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:36,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:36,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21032911] [2022-07-19 21:28:36,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:36,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:36,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:36,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:36,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:36,740 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:36,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 537 transitions, 8107 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:36,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:36,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:36,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:39,152 INFO L129 PetriNetUnfolder]: 2692/7906 cut-off events. [2022-07-19 21:28:39,152 INFO L130 PetriNetUnfolder]: For 65903/66151 co-relation queries the response was YES. [2022-07-19 21:28:39,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42117 conditions, 7906 events. 2692/7906 cut-off events. For 65903/66151 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 91985 event pairs, 635 based on Foata normal form. 13/7767 useless extension candidates. Maximal degree in co-relation 41917. Up to 3075 conditions per place. [2022-07-19 21:28:39,278 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 284 selfloop transitions, 155 changer transitions 23/606 dead transitions. [2022-07-19 21:28:39,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 606 transitions, 9792 flow [2022-07-19 21:28:39,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:28:39,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:28:39,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2069 transitions. [2022-07-19 21:28:39,280 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7584310850439883 [2022-07-19 21:28:39,280 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2069 transitions. [2022-07-19 21:28:39,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2069 transitions. [2022-07-19 21:28:39,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:39,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2069 transitions. [2022-07-19 21:28:39,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.04545454545455) internal successors, (2069), 22 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:39,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:39,283 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:39,284 INFO L186 Difference]: Start difference. First operand has 609 places, 537 transitions, 8107 flow. Second operand 22 states and 2069 transitions. [2022-07-19 21:28:39,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 606 transitions, 9792 flow [2022-07-19 21:28:39,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 606 transitions, 9666 flow, removed 28 selfloop flow, removed 5 redundant places. [2022-07-19 21:28:39,822 INFO L242 Difference]: Finished difference. Result has 637 places, 565 transitions, 8857 flow [2022-07-19 21:28:39,822 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7990, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8857, PETRI_PLACES=637, PETRI_TRANSITIONS=565} [2022-07-19 21:28:39,823 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 525 predicate places. [2022-07-19 21:28:39,823 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 565 transitions, 8857 flow [2022-07-19 21:28:39,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:39,823 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:39,823 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:39,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-19 21:28:39,824 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:39,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:39,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1610730920, now seen corresponding path program 15 times [2022-07-19 21:28:39,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:39,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124023657] [2022-07-19 21:28:39,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:39,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:39,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:39,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124023657] [2022-07-19 21:28:39,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124023657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:39,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:39,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:39,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038252202] [2022-07-19 21:28:39,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:39,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:39,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:39,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:39,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:39,928 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:39,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 565 transitions, 8857 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:39,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:39,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:39,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:42,178 INFO L129 PetriNetUnfolder]: 2767/8171 cut-off events. [2022-07-19 21:28:42,179 INFO L130 PetriNetUnfolder]: For 77464/77712 co-relation queries the response was YES. [2022-07-19 21:28:42,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44911 conditions, 8171 events. 2767/8171 cut-off events. For 77464/77712 co-relation queries the response was YES. Maximal size of possible extension queue 1163. Compared 96008 event pairs, 654 based on Foata normal form. 10/8020 useless extension candidates. Maximal degree in co-relation 44701. Up to 3150 conditions per place. [2022-07-19 21:28:42,347 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 354 selfloop transitions, 110 changer transitions 21/629 dead transitions. [2022-07-19 21:28:42,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 629 transitions, 10691 flow [2022-07-19 21:28:42,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:28:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:28:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1979 transitions. [2022-07-19 21:28:42,349 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7599846390168971 [2022-07-19 21:28:42,349 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1979 transitions. [2022-07-19 21:28:42,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1979 transitions. [2022-07-19 21:28:42,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:42,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1979 transitions. [2022-07-19 21:28:42,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.23809523809524) internal successors, (1979), 21 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:42,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:42,354 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:42,354 INFO L186 Difference]: Start difference. First operand has 637 places, 565 transitions, 8857 flow. Second operand 21 states and 1979 transitions. [2022-07-19 21:28:42,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 629 transitions, 10691 flow [2022-07-19 21:28:43,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 629 transitions, 10577 flow, removed 57 selfloop flow, removed 2 redundant places. [2022-07-19 21:28:43,081 INFO L242 Difference]: Finished difference. Result has 667 places, 591 transitions, 9644 flow [2022-07-19 21:28:43,082 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8745, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9644, PETRI_PLACES=667, PETRI_TRANSITIONS=591} [2022-07-19 21:28:43,082 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 555 predicate places. [2022-07-19 21:28:43,082 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 591 transitions, 9644 flow [2022-07-19 21:28:43,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:43,082 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:43,083 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] [2022-07-19 21:28:43,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-19 21:28:43,083 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:43,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:43,083 INFO L85 PathProgramCache]: Analyzing trace with hash -350992242, now seen corresponding path program 16 times [2022-07-19 21:28:43,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:43,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228137431] [2022-07-19 21:28:43,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:43,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:43,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:43,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228137431] [2022-07-19 21:28:43,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228137431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:43,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:43,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:43,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51540991] [2022-07-19 21:28:43,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:43,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:43,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:43,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:43,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:43,146 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:43,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 591 transitions, 9644 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:43,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:43,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:43,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:45,516 INFO L129 PetriNetUnfolder]: 2768/8236 cut-off events. [2022-07-19 21:28:45,517 INFO L130 PetriNetUnfolder]: For 84425/84671 co-relation queries the response was YES. [2022-07-19 21:28:45,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46318 conditions, 8236 events. 2768/8236 cut-off events. For 84425/84671 co-relation queries the response was YES. Maximal size of possible extension queue 1172. Compared 97036 event pairs, 648 based on Foata normal form. 13/8097 useless extension candidates. Maximal degree in co-relation 46095. Up to 3252 conditions per place. [2022-07-19 21:28:45,683 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 301 selfloop transitions, 165 changer transitions 23/633 dead transitions. [2022-07-19 21:28:45,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 633 transitions, 11056 flow [2022-07-19 21:28:45,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:28:45,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:28:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1699 transitions. [2022-07-19 21:28:45,685 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7612007168458781 [2022-07-19 21:28:45,686 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1699 transitions. [2022-07-19 21:28:45,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1699 transitions. [2022-07-19 21:28:45,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:45,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1699 transitions. [2022-07-19 21:28:45,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.38888888888889) internal successors, (1699), 18 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:45,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:45,689 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:45,689 INFO L186 Difference]: Start difference. First operand has 667 places, 591 transitions, 9644 flow. Second operand 18 states and 1699 transitions. [2022-07-19 21:28:45,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 633 transitions, 11056 flow [2022-07-19 21:28:46,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 633 transitions, 10828 flow, removed 114 selfloop flow, removed 2 redundant places. [2022-07-19 21:28:46,465 INFO L242 Difference]: Finished difference. Result has 687 places, 600 transitions, 9989 flow [2022-07-19 21:28:46,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9418, PETRI_DIFFERENCE_MINUEND_PLACES=663, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9989, PETRI_PLACES=687, PETRI_TRANSITIONS=600} [2022-07-19 21:28:46,466 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 575 predicate places. [2022-07-19 21:28:46,466 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 600 transitions, 9989 flow [2022-07-19 21:28:46,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:46,467 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:46,467 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] [2022-07-19 21:28:46,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-19 21:28:46,467 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:46,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:46,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1825091412, now seen corresponding path program 17 times [2022-07-19 21:28:46,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:46,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386549123] [2022-07-19 21:28:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:46,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:46,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:46,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386549123] [2022-07-19 21:28:46,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386549123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:46,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:46,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:46,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011908083] [2022-07-19 21:28:46,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:46,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:46,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:46,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:46,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:46,531 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:46,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 600 transitions, 9989 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:46,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:46,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:46,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:49,146 INFO L129 PetriNetUnfolder]: 2886/8639 cut-off events. [2022-07-19 21:28:49,146 INFO L130 PetriNetUnfolder]: For 91329/91575 co-relation queries the response was YES. [2022-07-19 21:28:49,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49603 conditions, 8639 events. 2886/8639 cut-off events. For 91329/91575 co-relation queries the response was YES. Maximal size of possible extension queue 1245. Compared 103002 event pairs, 676 based on Foata normal form. 10/8476 useless extension candidates. Maximal degree in co-relation 49374. Up to 3334 conditions per place. [2022-07-19 21:28:49,308 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 358 selfloop transitions, 135 changer transitions 16/653 dead transitions. [2022-07-19 21:28:49,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 653 transitions, 11752 flow [2022-07-19 21:28:49,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:28:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:28:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1609 transitions. [2022-07-19 21:28:49,310 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632827324478179 [2022-07-19 21:28:49,310 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1609 transitions. [2022-07-19 21:28:49,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1609 transitions. [2022-07-19 21:28:49,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:49,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1609 transitions. [2022-07-19 21:28:49,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.6470588235294) internal successors, (1609), 17 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:49,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:49,313 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:49,313 INFO L186 Difference]: Start difference. First operand has 687 places, 600 transitions, 9989 flow. Second operand 17 states and 1609 transitions. [2022-07-19 21:28:49,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 653 transitions, 11752 flow [2022-07-19 21:28:50,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 695 places, 653 transitions, 11494 flow, removed 52 selfloop flow, removed 6 redundant places. [2022-07-19 21:28:50,140 INFO L242 Difference]: Finished difference. Result has 703 places, 622 transitions, 10597 flow [2022-07-19 21:28:50,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9745, PETRI_DIFFERENCE_MINUEND_PLACES=679, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10597, PETRI_PLACES=703, PETRI_TRANSITIONS=622} [2022-07-19 21:28:50,141 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 591 predicate places. [2022-07-19 21:28:50,141 INFO L495 AbstractCegarLoop]: Abstraction has has 703 places, 622 transitions, 10597 flow [2022-07-19 21:28:50,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:50,141 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:50,141 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] [2022-07-19 21:28:50,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-19 21:28:50,142 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:50,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:50,142 INFO L85 PathProgramCache]: Analyzing trace with hash -35946754, now seen corresponding path program 18 times [2022-07-19 21:28:50,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:50,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139806522] [2022-07-19 21:28:50,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:50,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:50,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:50,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139806522] [2022-07-19 21:28:50,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139806522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:50,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:50,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:50,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371666390] [2022-07-19 21:28:50,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:50,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:50,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:50,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:50,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:50,208 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:50,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 622 transitions, 10597 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:50,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:50,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:50,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:52,797 INFO L129 PetriNetUnfolder]: 2968/8880 cut-off events. [2022-07-19 21:28:52,797 INFO L130 PetriNetUnfolder]: For 99107/99354 co-relation queries the response was YES. [2022-07-19 21:28:52,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52513 conditions, 8880 events. 2968/8880 cut-off events. For 99107/99354 co-relation queries the response was YES. Maximal size of possible extension queue 1277. Compared 106210 event pairs, 690 based on Foata normal form. 10/8719 useless extension candidates. Maximal degree in co-relation 52279. Up to 3429 conditions per place. [2022-07-19 21:28:52,998 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 384 selfloop transitions, 130 changer transitions 17/675 dead transitions. [2022-07-19 21:28:52,999 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 675 transitions, 12415 flow [2022-07-19 21:28:52,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:28:52,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:28:53,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1613 transitions. [2022-07-19 21:28:53,000 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7651802656546489 [2022-07-19 21:28:53,000 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1613 transitions. [2022-07-19 21:28:53,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1613 transitions. [2022-07-19 21:28:53,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:53,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1613 transitions. [2022-07-19 21:28:53,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.88235294117646) internal successors, (1613), 17 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:53,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:53,015 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:53,015 INFO L186 Difference]: Start difference. First operand has 703 places, 622 transitions, 10597 flow. Second operand 17 states and 1613 transitions. [2022-07-19 21:28:53,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 675 transitions, 12415 flow [2022-07-19 21:28:53,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 715 places, 675 transitions, 12217 flow, removed 99 selfloop flow, removed 2 redundant places. [2022-07-19 21:28:53,953 INFO L242 Difference]: Finished difference. Result has 723 places, 644 transitions, 11256 flow [2022-07-19 21:28:53,954 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10405, PETRI_DIFFERENCE_MINUEND_PLACES=699, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=11256, PETRI_PLACES=723, PETRI_TRANSITIONS=644} [2022-07-19 21:28:53,954 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 611 predicate places. [2022-07-19 21:28:53,954 INFO L495 AbstractCegarLoop]: Abstraction has has 723 places, 644 transitions, 11256 flow [2022-07-19 21:28:53,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:53,955 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:53,955 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] [2022-07-19 21:28:53,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-19 21:28:53,955 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:53,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:53,955 INFO L85 PathProgramCache]: Analyzing trace with hash -992253680, now seen corresponding path program 19 times [2022-07-19 21:28:53,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:53,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900582754] [2022-07-19 21:28:53,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:53,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:54,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:54,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900582754] [2022-07-19 21:28:54,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900582754] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:54,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:54,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:54,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222218925] [2022-07-19 21:28:54,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:54,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:54,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:54,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:54,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:54,028 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:54,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 723 places, 644 transitions, 11256 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:54,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:54,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:54,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:56,898 INFO L129 PetriNetUnfolder]: 2982/9068 cut-off events. [2022-07-19 21:28:56,898 INFO L130 PetriNetUnfolder]: For 104758/105009 co-relation queries the response was YES. [2022-07-19 21:28:57,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53783 conditions, 9068 events. 2982/9068 cut-off events. For 104758/105009 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 109707 event pairs, 690 based on Foata normal form. 10/8907 useless extension candidates. Maximal degree in co-relation 53542. Up to 3443 conditions per place. [2022-07-19 21:28:57,206 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 381 selfloop transitions, 135 changer transitions 21/681 dead transitions. [2022-07-19 21:28:57,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 738 places, 681 transitions, 12763 flow [2022-07-19 21:28:57,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:28:57,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:28:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1703 transitions. [2022-07-19 21:28:57,208 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7629928315412187 [2022-07-19 21:28:57,208 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1703 transitions. [2022-07-19 21:28:57,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1703 transitions. [2022-07-19 21:28:57,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:57,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1703 transitions. [2022-07-19 21:28:57,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:57,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:57,211 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:57,211 INFO L186 Difference]: Start difference. First operand has 723 places, 644 transitions, 11256 flow. Second operand 18 states and 1703 transitions. [2022-07-19 21:28:57,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 738 places, 681 transitions, 12763 flow [2022-07-19 21:28:58,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 735 places, 681 transitions, 12479 flow, removed 106 selfloop flow, removed 3 redundant places. [2022-07-19 21:28:58,239 INFO L242 Difference]: Finished difference. Result has 739 places, 653 transitions, 11538 flow [2022-07-19 21:28:58,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11006, PETRI_DIFFERENCE_MINUEND_PLACES=718, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=11538, PETRI_PLACES=739, PETRI_TRANSITIONS=653} [2022-07-19 21:28:58,240 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 627 predicate places. [2022-07-19 21:28:58,241 INFO L495 AbstractCegarLoop]: Abstraction has has 739 places, 653 transitions, 11538 flow [2022-07-19 21:28:58,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:58,241 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:58,241 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] [2022-07-19 21:28:58,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-19 21:28:58,241 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:58,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:58,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1337115450, now seen corresponding path program 20 times [2022-07-19 21:28:58,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:58,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824742579] [2022-07-19 21:28:58,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:58,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:58,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:58,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824742579] [2022-07-19 21:28:58,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824742579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:58,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:58,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:58,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163767622] [2022-07-19 21:28:58,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:58,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:58,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:58,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:58,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:58,313 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:28:58,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 739 places, 653 transitions, 11538 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:58,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:58,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:28:58,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:01,094 INFO L129 PetriNetUnfolder]: 2982/9046 cut-off events. [2022-07-19 21:29:01,094 INFO L130 PetriNetUnfolder]: For 106334/106575 co-relation queries the response was YES. [2022-07-19 21:29:01,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53514 conditions, 9046 events. 2982/9046 cut-off events. For 106334/106575 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 109351 event pairs, 692 based on Foata normal form. 9/8888 useless extension candidates. Maximal degree in co-relation 53271. Up to 3462 conditions per place. [2022-07-19 21:29:01,274 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 100 selfloop transitions, 0 changer transitions 477/687 dead transitions. [2022-07-19 21:29:01,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 754 places, 687 transitions, 12911 flow [2022-07-19 21:29:01,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:29:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:29:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1703 transitions. [2022-07-19 21:29:01,276 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7629928315412187 [2022-07-19 21:29:01,276 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1703 transitions. [2022-07-19 21:29:01,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1703 transitions. [2022-07-19 21:29:01,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:01,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1703 transitions. [2022-07-19 21:29:01,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:01,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:01,279 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:01,279 INFO L186 Difference]: Start difference. First operand has 739 places, 653 transitions, 11538 flow. Second operand 18 states and 1703 transitions. [2022-07-19 21:29:01,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 754 places, 687 transitions, 12911 flow [2022-07-19 21:29:02,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 687 transitions, 12702 flow, removed 71 selfloop flow, removed 17 redundant places. [2022-07-19 21:29:02,222 INFO L242 Difference]: Finished difference. Result has 740 places, 210 transitions, 2056 flow [2022-07-19 21:29:02,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11331, PETRI_DIFFERENCE_MINUEND_PLACES=720, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2056, PETRI_PLACES=740, PETRI_TRANSITIONS=210} [2022-07-19 21:29:02,222 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 628 predicate places. [2022-07-19 21:29:02,223 INFO L495 AbstractCegarLoop]: Abstraction has has 740 places, 210 transitions, 2056 flow [2022-07-19 21:29:02,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:02,223 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:02,223 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] [2022-07-19 21:29:02,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-19 21:29:02,223 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:02,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:02,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1046582820, now seen corresponding path program 4 times [2022-07-19 21:29:02,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:02,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156338684] [2022-07-19 21:29:02,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:02,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:02,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:02,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:02,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156338684] [2022-07-19 21:29:02,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156338684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:02,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:02,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:02,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067980298] [2022-07-19 21:29:02,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:02,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:02,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:02,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:02,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:02,323 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:02,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 740 places, 210 transitions, 2056 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:02,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:02,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:02,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:03,068 INFO L129 PetriNetUnfolder]: 1061/2981 cut-off events. [2022-07-19 21:29:03,069 INFO L130 PetriNetUnfolder]: For 12276/12376 co-relation queries the response was YES. [2022-07-19 21:29:03,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12314 conditions, 2981 events. 1061/2981 cut-off events. For 12276/12376 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 27899 event pairs, 127 based on Foata normal form. 3/2922 useless extension candidates. Maximal degree in co-relation 12084. Up to 864 conditions per place. [2022-07-19 21:29:03,135 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 105 selfloop transitions, 51 changer transitions 22/288 dead transitions. [2022-07-19 21:29:03,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 288 transitions, 3030 flow [2022-07-19 21:29:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:29:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:29:03,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1883 transitions. [2022-07-19 21:29:03,137 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7592741935483871 [2022-07-19 21:29:03,137 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1883 transitions. [2022-07-19 21:29:03,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1883 transitions. [2022-07-19 21:29:03,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:03,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1883 transitions. [2022-07-19 21:29:03,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.15) internal successors, (1883), 20 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:03,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:03,141 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:03,141 INFO L186 Difference]: Start difference. First operand has 740 places, 210 transitions, 2056 flow. Second operand 20 states and 1883 transitions. [2022-07-19 21:29:03,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 288 transitions, 3030 flow [2022-07-19 21:29:03,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 288 transitions, 2735 flow, removed 70 selfloop flow, removed 44 redundant places. [2022-07-19 21:29:03,220 INFO L242 Difference]: Finished difference. Result has 418 places, 244 transitions, 2372 flow [2022-07-19 21:29:03,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2372, PETRI_PLACES=418, PETRI_TRANSITIONS=244} [2022-07-19 21:29:03,221 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 306 predicate places. [2022-07-19 21:29:03,221 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 244 transitions, 2372 flow [2022-07-19 21:29:03,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:03,222 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:03,222 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] [2022-07-19 21:29:03,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-19 21:29:03,222 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:03,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:03,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2098260682, now seen corresponding path program 5 times [2022-07-19 21:29:03,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:03,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993060005] [2022-07-19 21:29:03,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:03,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:03,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:03,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993060005] [2022-07-19 21:29:03,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993060005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:03,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:03,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:03,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408603337] [2022-07-19 21:29:03,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:03,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:03,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:03,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:03,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:03,284 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:03,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 244 transitions, 2372 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:03,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:03,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:03,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:04,269 INFO L129 PetriNetUnfolder]: 1166/3377 cut-off events. [2022-07-19 21:29:04,270 INFO L130 PetriNetUnfolder]: For 17024/17136 co-relation queries the response was YES. [2022-07-19 21:29:04,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15279 conditions, 3377 events. 1166/3377 cut-off events. For 17024/17136 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 33126 event pairs, 50 based on Foata normal form. 9/3328 useless extension candidates. Maximal degree in co-relation 15069. Up to 523 conditions per place. [2022-07-19 21:29:04,338 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 107 selfloop transitions, 93 changer transitions 26/336 dead transitions. [2022-07-19 21:29:04,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 336 transitions, 3564 flow [2022-07-19 21:29:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:29:04,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:29:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2246 transitions. [2022-07-19 21:29:04,340 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7547043010752689 [2022-07-19 21:29:04,340 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2246 transitions. [2022-07-19 21:29:04,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2246 transitions. [2022-07-19 21:29:04,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:04,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2246 transitions. [2022-07-19 21:29:04,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 93.58333333333333) internal successors, (2246), 24 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:04,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:04,344 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:04,345 INFO L186 Difference]: Start difference. First operand has 418 places, 244 transitions, 2372 flow. Second operand 24 states and 2246 transitions. [2022-07-19 21:29:04,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 336 transitions, 3564 flow [2022-07-19 21:29:04,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 336 transitions, 3266 flow, removed 149 selfloop flow, removed 2 redundant places. [2022-07-19 21:29:04,542 INFO L242 Difference]: Finished difference. Result has 455 places, 269 transitions, 2759 flow [2022-07-19 21:29:04,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2178, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2759, PETRI_PLACES=455, PETRI_TRANSITIONS=269} [2022-07-19 21:29:04,545 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 343 predicate places. [2022-07-19 21:29:04,545 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 269 transitions, 2759 flow [2022-07-19 21:29:04,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:04,546 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:04,546 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] [2022-07-19 21:29:04,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-19 21:29:04,547 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:04,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:04,547 INFO L85 PathProgramCache]: Analyzing trace with hash -582561648, now seen corresponding path program 6 times [2022-07-19 21:29:04,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:04,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674644177] [2022-07-19 21:29:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:04,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:04,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:04,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674644177] [2022-07-19 21:29:04,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674644177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:04,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:04,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:04,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497492990] [2022-07-19 21:29:04,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:04,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:04,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:04,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:04,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:04,629 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:04,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 269 transitions, 2759 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:04,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:04,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:04,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:05,679 INFO L129 PetriNetUnfolder]: 1415/4089 cut-off events. [2022-07-19 21:29:05,679 INFO L130 PetriNetUnfolder]: For 26423/26578 co-relation queries the response was YES. [2022-07-19 21:29:05,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19801 conditions, 4089 events. 1415/4089 cut-off events. For 26423/26578 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 41272 event pairs, 141 based on Foata normal form. 27/4039 useless extension candidates. Maximal degree in co-relation 19574. Up to 885 conditions per place. [2022-07-19 21:29:05,764 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 132 selfloop transitions, 86 changer transitions 24/352 dead transitions. [2022-07-19 21:29:05,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 352 transitions, 4133 flow [2022-07-19 21:29:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:29:05,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:29:05,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2065 transitions. [2022-07-19 21:29:05,766 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7569648093841642 [2022-07-19 21:29:05,766 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2065 transitions. [2022-07-19 21:29:05,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2065 transitions. [2022-07-19 21:29:05,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:05,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2065 transitions. [2022-07-19 21:29:05,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 93.86363636363636) internal successors, (2065), 22 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:05,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:05,769 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:05,769 INFO L186 Difference]: Start difference. First operand has 455 places, 269 transitions, 2759 flow. Second operand 22 states and 2065 transitions. [2022-07-19 21:29:05,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 352 transitions, 4133 flow [2022-07-19 21:29:05,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 352 transitions, 3892 flow, removed 21 selfloop flow, removed 7 redundant places. [2022-07-19 21:29:05,968 INFO L242 Difference]: Finished difference. Result has 481 places, 300 transitions, 3290 flow [2022-07-19 21:29:05,969 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2585, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3290, PETRI_PLACES=481, PETRI_TRANSITIONS=300} [2022-07-19 21:29:05,969 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 369 predicate places. [2022-07-19 21:29:05,969 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 300 transitions, 3290 flow [2022-07-19 21:29:05,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:05,969 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:05,970 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] [2022-07-19 21:29:05,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-07-19 21:29:05,970 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:05,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:05,970 INFO L85 PathProgramCache]: Analyzing trace with hash 800890864, now seen corresponding path program 7 times [2022-07-19 21:29:05,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:05,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819567576] [2022-07-19 21:29:05,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:05,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:06,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:06,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819567576] [2022-07-19 21:29:06,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819567576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:06,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:06,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:06,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916110821] [2022-07-19 21:29:06,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:06,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:06,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:06,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:06,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:06,037 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:06,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 300 transitions, 3290 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:06,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:06,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:06,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:07,084 INFO L129 PetriNetUnfolder]: 1486/4306 cut-off events. [2022-07-19 21:29:07,085 INFO L130 PetriNetUnfolder]: For 36547/36663 co-relation queries the response was YES. [2022-07-19 21:29:07,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22468 conditions, 4306 events. 1486/4306 cut-off events. For 36547/36663 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 44191 event pairs, 175 based on Foata normal form. 7/4226 useless extension candidates. Maximal degree in co-relation 22229. Up to 1101 conditions per place. [2022-07-19 21:29:07,185 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 159 selfloop transitions, 80 changer transitions 23/372 dead transitions. [2022-07-19 21:29:07,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 372 transitions, 4640 flow [2022-07-19 21:29:07,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:29:07,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:29:07,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1976 transitions. [2022-07-19 21:29:07,187 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7588325652841782 [2022-07-19 21:29:07,187 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1976 transitions. [2022-07-19 21:29:07,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1976 transitions. [2022-07-19 21:29:07,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:07,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1976 transitions. [2022-07-19 21:29:07,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.0952380952381) internal successors, (1976), 21 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:07,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:07,190 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:07,190 INFO L186 Difference]: Start difference. First operand has 481 places, 300 transitions, 3290 flow. Second operand 21 states and 1976 transitions. [2022-07-19 21:29:07,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 372 transitions, 4640 flow [2022-07-19 21:29:07,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 372 transitions, 4435 flow, removed 100 selfloop flow, removed 3 redundant places. [2022-07-19 21:29:07,508 INFO L242 Difference]: Finished difference. Result has 510 places, 326 transitions, 3795 flow [2022-07-19 21:29:07,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3104, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3795, PETRI_PLACES=510, PETRI_TRANSITIONS=326} [2022-07-19 21:29:07,509 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 398 predicate places. [2022-07-19 21:29:07,509 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 326 transitions, 3795 flow [2022-07-19 21:29:07,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:07,510 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:07,510 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] [2022-07-19 21:29:07,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-07-19 21:29:07,510 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:07,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:07,510 INFO L85 PathProgramCache]: Analyzing trace with hash 2078556782, now seen corresponding path program 8 times [2022-07-19 21:29:07,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:07,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901921174] [2022-07-19 21:29:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:07,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:07,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:07,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901921174] [2022-07-19 21:29:07,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901921174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:07,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:07,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:07,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621254972] [2022-07-19 21:29:07,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:07,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:07,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:07,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:07,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:07,579 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:07,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 326 transitions, 3795 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:07,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:07,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:07,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:08,993 INFO L129 PetriNetUnfolder]: 1574/4737 cut-off events. [2022-07-19 21:29:08,993 INFO L130 PetriNetUnfolder]: For 44130/44264 co-relation queries the response was YES. [2022-07-19 21:29:09,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25177 conditions, 4737 events. 1574/4737 cut-off events. For 44130/44264 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 51039 event pairs, 183 based on Foata normal form. 11/4660 useless extension candidates. Maximal degree in co-relation 24926. Up to 1156 conditions per place. [2022-07-19 21:29:09,090 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 157 selfloop transitions, 110 changer transitions 19/396 dead transitions. [2022-07-19 21:29:09,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 396 transitions, 5105 flow [2022-07-19 21:29:09,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:29:09,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:29:09,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1879 transitions. [2022-07-19 21:29:09,091 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7576612903225807 [2022-07-19 21:29:09,092 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1879 transitions. [2022-07-19 21:29:09,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1879 transitions. [2022-07-19 21:29:09,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:09,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1879 transitions. [2022-07-19 21:29:09,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 93.95) internal successors, (1879), 20 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:09,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:09,095 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:09,095 INFO L186 Difference]: Start difference. First operand has 510 places, 326 transitions, 3795 flow. Second operand 20 states and 1879 transitions. [2022-07-19 21:29:09,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 396 transitions, 5105 flow [2022-07-19 21:29:09,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 396 transitions, 4851 flow, removed 127 selfloop flow, removed 2 redundant places. [2022-07-19 21:29:09,460 INFO L242 Difference]: Finished difference. Result has 538 places, 352 transitions, 4338 flow [2022-07-19 21:29:09,460 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3589, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4338, PETRI_PLACES=538, PETRI_TRANSITIONS=352} [2022-07-19 21:29:09,460 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 426 predicate places. [2022-07-19 21:29:09,460 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 352 transitions, 4338 flow [2022-07-19 21:29:09,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:09,461 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:09,461 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] [2022-07-19 21:29:09,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-07-19 21:29:09,461 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:09,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:09,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1287744040, now seen corresponding path program 9 times [2022-07-19 21:29:09,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:09,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802841415] [2022-07-19 21:29:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:09,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:09,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:09,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:09,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802841415] [2022-07-19 21:29:09,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802841415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:09,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:09,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:09,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658517708] [2022-07-19 21:29:09,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:09,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:09,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:09,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:09,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:09,527 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:09,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 352 transitions, 4338 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:09,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:09,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:09,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:10,848 INFO L129 PetriNetUnfolder]: 1639/4999 cut-off events. [2022-07-19 21:29:10,849 INFO L130 PetriNetUnfolder]: For 48713/48847 co-relation queries the response was YES. [2022-07-19 21:29:10,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27611 conditions, 4999 events. 1639/4999 cut-off events. For 48713/48847 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 54534 event pairs, 173 based on Foata normal form. 13/4922 useless extension candidates. Maximal degree in co-relation 27348. Up to 1225 conditions per place. [2022-07-19 21:29:10,974 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 166 selfloop transitions, 119 changer transitions 14/409 dead transitions. [2022-07-19 21:29:10,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 409 transitions, 5657 flow [2022-07-19 21:29:10,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:29:10,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:29:10,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1508 transitions. [2022-07-19 21:29:10,975 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7600806451612904 [2022-07-19 21:29:10,975 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1508 transitions. [2022-07-19 21:29:10,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1508 transitions. [2022-07-19 21:29:10,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:10,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1508 transitions. [2022-07-19 21:29:10,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.25) internal successors, (1508), 16 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:10,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:10,978 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:10,978 INFO L186 Difference]: Start difference. First operand has 538 places, 352 transitions, 4338 flow. Second operand 16 states and 1508 transitions. [2022-07-19 21:29:10,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 409 transitions, 5657 flow [2022-07-19 21:29:11,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 409 transitions, 5484 flow, removed 63 selfloop flow, removed 3 redundant places. [2022-07-19 21:29:11,419 INFO L242 Difference]: Finished difference. Result has 556 places, 370 transitions, 4811 flow [2022-07-19 21:29:11,420 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4228, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4811, PETRI_PLACES=556, PETRI_TRANSITIONS=370} [2022-07-19 21:29:11,420 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 444 predicate places. [2022-07-19 21:29:11,420 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 370 transitions, 4811 flow [2022-07-19 21:29:11,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:11,420 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:11,421 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] [2022-07-19 21:29:11,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-07-19 21:29:11,421 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:11,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:11,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2002501142, now seen corresponding path program 10 times [2022-07-19 21:29:11,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:11,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526618932] [2022-07-19 21:29:11,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:11,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:11,483 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 21:29:11,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:11,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526618932] [2022-07-19 21:29:11,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526618932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:11,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:11,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:11,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524861492] [2022-07-19 21:29:11,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:11,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:11,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:11,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:11,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:11,486 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:11,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 370 transitions, 4811 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:11,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:11,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:11,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:12,853 INFO L129 PetriNetUnfolder]: 1633/4986 cut-off events. [2022-07-19 21:29:12,854 INFO L130 PetriNetUnfolder]: For 44552/44684 co-relation queries the response was YES. [2022-07-19 21:29:12,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28184 conditions, 4986 events. 1633/4986 cut-off events. For 44552/44684 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 54230 event pairs, 149 based on Foata normal form. 17/4926 useless extension candidates. Maximal degree in co-relation 27915. Up to 1212 conditions per place. [2022-07-19 21:29:12,973 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 163 selfloop transitions, 123 changer transitions 23/419 dead transitions. [2022-07-19 21:29:12,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 419 transitions, 5982 flow [2022-07-19 21:29:12,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:29:12,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:29:12,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1693 transitions. [2022-07-19 21:29:12,974 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7585125448028673 [2022-07-19 21:29:12,974 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1693 transitions. [2022-07-19 21:29:12,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1693 transitions. [2022-07-19 21:29:12,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:12,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1693 transitions. [2022-07-19 21:29:12,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.05555555555556) internal successors, (1693), 18 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:12,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:12,977 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:12,977 INFO L186 Difference]: Start difference. First operand has 556 places, 370 transitions, 4811 flow. Second operand 18 states and 1693 transitions. [2022-07-19 21:29:12,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 419 transitions, 5982 flow [2022-07-19 21:29:13,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 419 transitions, 5830 flow, removed 52 selfloop flow, removed 3 redundant places. [2022-07-19 21:29:13,558 INFO L242 Difference]: Finished difference. Result has 575 places, 379 transitions, 5167 flow [2022-07-19 21:29:13,559 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4680, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5167, PETRI_PLACES=575, PETRI_TRANSITIONS=379} [2022-07-19 21:29:13,559 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 463 predicate places. [2022-07-19 21:29:13,559 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 379 transitions, 5167 flow [2022-07-19 21:29:13,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:13,559 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:13,560 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] [2022-07-19 21:29:13,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-07-19 21:29:13,560 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:13,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:13,560 INFO L85 PathProgramCache]: Analyzing trace with hash 245406122, now seen corresponding path program 11 times [2022-07-19 21:29:13,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:13,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152235405] [2022-07-19 21:29:13,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:13,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:13,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:13,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152235405] [2022-07-19 21:29:13,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152235405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:13,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:13,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:13,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253244013] [2022-07-19 21:29:13,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:13,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:13,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:13,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:13,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:13,670 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:13,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 379 transitions, 5167 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:13,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:13,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:13,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:15,561 INFO L129 PetriNetUnfolder]: 1692/5244 cut-off events. [2022-07-19 21:29:15,561 INFO L130 PetriNetUnfolder]: For 52251/52389 co-relation queries the response was YES. [2022-07-19 21:29:15,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30437 conditions, 5244 events. 1692/5244 cut-off events. For 52251/52389 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 57912 event pairs, 194 based on Foata normal form. 7/5162 useless extension candidates. Maximal degree in co-relation 30163. Up to 1281 conditions per place. [2022-07-19 21:29:15,674 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 196 selfloop transitions, 109 changer transitions 17/432 dead transitions. [2022-07-19 21:29:15,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 432 transitions, 6487 flow [2022-07-19 21:29:15,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:29:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:29:15,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1698 transitions. [2022-07-19 21:29:15,676 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2022-07-19 21:29:15,676 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1698 transitions. [2022-07-19 21:29:15,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1698 transitions. [2022-07-19 21:29:15,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:15,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1698 transitions. [2022-07-19 21:29:15,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.33333333333333) internal successors, (1698), 18 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:15,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:15,679 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:15,679 INFO L186 Difference]: Start difference. First operand has 575 places, 379 transitions, 5167 flow. Second operand 18 states and 1698 transitions. [2022-07-19 21:29:15,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 432 transitions, 6487 flow [2022-07-19 21:29:16,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 432 transitions, 6261 flow, removed 66 selfloop flow, removed 6 redundant places. [2022-07-19 21:29:16,225 INFO L242 Difference]: Finished difference. Result has 590 places, 399 transitions, 5691 flow [2022-07-19 21:29:16,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4971, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5691, PETRI_PLACES=590, PETRI_TRANSITIONS=399} [2022-07-19 21:29:16,226 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 478 predicate places. [2022-07-19 21:29:16,226 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 399 transitions, 5691 flow [2022-07-19 21:29:16,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:16,226 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:16,227 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] [2022-07-19 21:29:16,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-07-19 21:29:16,227 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:16,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:16,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1821456120, now seen corresponding path program 12 times [2022-07-19 21:29:16,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:16,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302155652] [2022-07-19 21:29:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:16,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:16,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:16,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302155652] [2022-07-19 21:29:16,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302155652] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:16,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:16,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:16,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846172852] [2022-07-19 21:29:16,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:16,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:16,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:16,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:16,291 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:16,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 399 transitions, 5691 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:16,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:16,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:16,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:18,113 INFO L129 PetriNetUnfolder]: 1734/5404 cut-off events. [2022-07-19 21:29:18,114 INFO L130 PetriNetUnfolder]: For 51795/51937 co-relation queries the response was YES. [2022-07-19 21:29:18,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31840 conditions, 5404 events. 1734/5404 cut-off events. For 51795/51937 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 60125 event pairs, 213 based on Foata normal form. 7/5316 useless extension candidates. Maximal degree in co-relation 31563. Up to 1363 conditions per place. [2022-07-19 21:29:18,230 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 178 selfloop transitions, 133 changer transitions 20/441 dead transitions. [2022-07-19 21:29:18,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 441 transitions, 6770 flow [2022-07-19 21:29:18,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:29:18,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:29:18,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1694 transitions. [2022-07-19 21:29:18,232 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7589605734767025 [2022-07-19 21:29:18,232 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1694 transitions. [2022-07-19 21:29:18,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1694 transitions. [2022-07-19 21:29:18,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:18,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1694 transitions. [2022-07-19 21:29:18,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.11111111111111) internal successors, (1694), 18 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:18,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:18,235 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:18,235 INFO L186 Difference]: Start difference. First operand has 590 places, 399 transitions, 5691 flow. Second operand 18 states and 1694 transitions. [2022-07-19 21:29:18,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 441 transitions, 6770 flow [2022-07-19 21:29:18,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 441 transitions, 6549 flow, removed 103 selfloop flow, removed 6 redundant places. [2022-07-19 21:29:18,757 INFO L242 Difference]: Finished difference. Result has 605 places, 412 transitions, 6023 flow [2022-07-19 21:29:18,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5472, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6023, PETRI_PLACES=605, PETRI_TRANSITIONS=412} [2022-07-19 21:29:18,759 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 493 predicate places. [2022-07-19 21:29:18,759 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 412 transitions, 6023 flow [2022-07-19 21:29:18,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:18,760 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:18,760 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] [2022-07-19 21:29:18,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-07-19 21:29:18,760 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:18,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:18,760 INFO L85 PathProgramCache]: Analyzing trace with hash -984917032, now seen corresponding path program 13 times [2022-07-19 21:29:18,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:18,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860104446] [2022-07-19 21:29:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:18,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:18,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:18,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860104446] [2022-07-19 21:29:18,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860104446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:18,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:18,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:18,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569669470] [2022-07-19 21:29:18,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:18,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:18,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:18,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:18,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:18,826 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:18,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 412 transitions, 6023 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:18,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:18,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:18,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:20,897 INFO L129 PetriNetUnfolder]: 1729/5375 cut-off events. [2022-07-19 21:29:20,897 INFO L130 PetriNetUnfolder]: For 51047/51189 co-relation queries the response was YES. [2022-07-19 21:29:21,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32263 conditions, 5375 events. 1729/5375 cut-off events. For 51047/51189 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 59726 event pairs, 222 based on Foata normal form. 7/5287 useless extension candidates. Maximal degree in co-relation 31985. Up to 1378 conditions per place. [2022-07-19 21:29:21,030 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 195 selfloop transitions, 118 changer transitions 22/445 dead transitions. [2022-07-19 21:29:21,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 445 transitions, 6956 flow [2022-07-19 21:29:21,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:29:21,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:29:21,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1604 transitions. [2022-07-19 21:29:21,032 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7609108159392789 [2022-07-19 21:29:21,032 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1604 transitions. [2022-07-19 21:29:21,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1604 transitions. [2022-07-19 21:29:21,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:21,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1604 transitions. [2022-07-19 21:29:21,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.3529411764706) internal successors, (1604), 17 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:21,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:21,035 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:21,035 INFO L186 Difference]: Start difference. First operand has 605 places, 412 transitions, 6023 flow. Second operand 17 states and 1604 transitions. [2022-07-19 21:29:21,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 445 transitions, 6956 flow [2022-07-19 21:29:21,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 445 transitions, 6833 flow, removed 32 selfloop flow, removed 5 redundant places. [2022-07-19 21:29:21,658 INFO L242 Difference]: Finished difference. Result has 619 places, 418 transitions, 6270 flow [2022-07-19 21:29:21,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5906, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6270, PETRI_PLACES=619, PETRI_TRANSITIONS=418} [2022-07-19 21:29:21,659 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 507 predicate places. [2022-07-19 21:29:21,659 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 418 transitions, 6270 flow [2022-07-19 21:29:21,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:21,659 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:21,659 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] [2022-07-19 21:29:21,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-07-19 21:29:21,660 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:21,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:21,660 INFO L85 PathProgramCache]: Analyzing trace with hash -391827092, now seen corresponding path program 14 times [2022-07-19 21:29:21,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:21,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976581226] [2022-07-19 21:29:21,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:21,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:21,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:21,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976581226] [2022-07-19 21:29:21,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976581226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:21,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:21,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:21,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236919133] [2022-07-19 21:29:21,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:21,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:21,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:21,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:21,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:21,725 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:21,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 418 transitions, 6270 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:21,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:21,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:21,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:23,883 INFO L129 PetriNetUnfolder]: 1861/5942 cut-off events. [2022-07-19 21:29:23,883 INFO L130 PetriNetUnfolder]: For 59403/59535 co-relation queries the response was YES. [2022-07-19 21:29:24,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35168 conditions, 5942 events. 1861/5942 cut-off events. For 59403/59535 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 68208 event pairs, 171 based on Foata normal form. 9/5871 useless extension candidates. Maximal degree in co-relation 34889. Up to 1231 conditions per place. [2022-07-19 21:29:24,027 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 199 selfloop transitions, 155 changer transitions 23/487 dead transitions. [2022-07-19 21:29:24,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 487 transitions, 7758 flow [2022-07-19 21:29:24,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:29:24,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:29:24,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2063 transitions. [2022-07-19 21:29:24,029 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7562316715542522 [2022-07-19 21:29:24,029 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2063 transitions. [2022-07-19 21:29:24,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2063 transitions. [2022-07-19 21:29:24,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:24,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2063 transitions. [2022-07-19 21:29:24,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 93.77272727272727) internal successors, (2063), 22 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:24,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:24,033 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:24,033 INFO L186 Difference]: Start difference. First operand has 619 places, 418 transitions, 6270 flow. Second operand 22 states and 2063 transitions. [2022-07-19 21:29:24,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 487 transitions, 7758 flow [2022-07-19 21:29:24,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 487 transitions, 7634 flow, removed 27 selfloop flow, removed 5 redundant places. [2022-07-19 21:29:24,690 INFO L242 Difference]: Finished difference. Result has 647 places, 446 transitions, 7001 flow [2022-07-19 21:29:24,690 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6155, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7001, PETRI_PLACES=647, PETRI_TRANSITIONS=446} [2022-07-19 21:29:24,691 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 535 predicate places. [2022-07-19 21:29:24,691 INFO L495 AbstractCegarLoop]: Abstraction has has 647 places, 446 transitions, 7001 flow [2022-07-19 21:29:24,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:24,691 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:24,691 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] [2022-07-19 21:29:24,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-07-19 21:29:24,692 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:24,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:24,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1682575218, now seen corresponding path program 15 times [2022-07-19 21:29:24,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:24,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885909403] [2022-07-19 21:29:24,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:24,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:24,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:24,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885909403] [2022-07-19 21:29:24,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885909403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:24,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:24,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:24,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549974577] [2022-07-19 21:29:24,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:24,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:24,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:24,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:24,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:24,756 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:24,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 446 transitions, 7001 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:24,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:24,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:24,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:27,290 INFO L129 PetriNetUnfolder]: 1941/6354 cut-off events. [2022-07-19 21:29:27,290 INFO L130 PetriNetUnfolder]: For 70106/70238 co-relation queries the response was YES. [2022-07-19 21:29:27,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38401 conditions, 6354 events. 1941/6354 cut-off events. For 70106/70238 co-relation queries the response was YES. Maximal size of possible extension queue 927. Compared 74443 event pairs, 175 based on Foata normal form. 9/6282 useless extension candidates. Maximal degree in co-relation 38112. Up to 1983 conditions per place. [2022-07-19 21:29:27,442 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 269 selfloop transitions, 110 changer transitions 21/510 dead transitions. [2022-07-19 21:29:27,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 510 transitions, 8644 flow [2022-07-19 21:29:27,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:29:27,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:29:27,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1973 transitions. [2022-07-19 21:29:27,444 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7576804915514593 [2022-07-19 21:29:27,444 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1973 transitions. [2022-07-19 21:29:27,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1973 transitions. [2022-07-19 21:29:27,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:27,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1973 transitions. [2022-07-19 21:29:27,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 93.95238095238095) internal successors, (1973), 21 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:27,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:27,447 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:27,448 INFO L186 Difference]: Start difference. First operand has 647 places, 446 transitions, 7001 flow. Second operand 21 states and 1973 transitions. [2022-07-19 21:29:27,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 510 transitions, 8644 flow [2022-07-19 21:29:28,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 510 transitions, 8542 flow, removed 51 selfloop flow, removed 2 redundant places. [2022-07-19 21:29:28,359 INFO L242 Difference]: Finished difference. Result has 677 places, 472 transitions, 7789 flow [2022-07-19 21:29:28,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6901, PETRI_DIFFERENCE_MINUEND_PLACES=643, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7789, PETRI_PLACES=677, PETRI_TRANSITIONS=472} [2022-07-19 21:29:28,360 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 565 predicate places. [2022-07-19 21:29:28,360 INFO L495 AbstractCegarLoop]: Abstraction has has 677 places, 472 transitions, 7789 flow [2022-07-19 21:29:28,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:28,360 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:28,360 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] [2022-07-19 21:29:28,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-07-19 21:29:28,361 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:28,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:28,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1831333264, now seen corresponding path program 16 times [2022-07-19 21:29:28,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:28,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124945932] [2022-07-19 21:29:28,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:28,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:28,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:28,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124945932] [2022-07-19 21:29:28,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124945932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:28,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:28,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:28,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711451416] [2022-07-19 21:29:28,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:28,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:28,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:28,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:28,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:28,421 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:28,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 472 transitions, 7789 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:28,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:28,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:28,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:30,974 INFO L129 PetriNetUnfolder]: 1941/6380 cut-off events. [2022-07-19 21:29:30,974 INFO L130 PetriNetUnfolder]: For 77297/77429 co-relation queries the response was YES. [2022-07-19 21:29:31,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39985 conditions, 6380 events. 1941/6380 cut-off events. For 77297/77429 co-relation queries the response was YES. Maximal size of possible extension queue 928. Compared 74862 event pairs, 181 based on Foata normal form. 9/6309 useless extension candidates. Maximal degree in co-relation 39683. Up to 1425 conditions per place. [2022-07-19 21:29:31,118 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 216 selfloop transitions, 165 changer transitions 23/514 dead transitions. [2022-07-19 21:29:31,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 514 transitions, 9021 flow [2022-07-19 21:29:31,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:29:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:29:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1693 transitions. [2022-07-19 21:29:31,120 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7585125448028673 [2022-07-19 21:29:31,120 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1693 transitions. [2022-07-19 21:29:31,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1693 transitions. [2022-07-19 21:29:31,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:31,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1693 transitions. [2022-07-19 21:29:31,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.05555555555556) internal successors, (1693), 18 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:31,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:31,123 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:31,123 INFO L186 Difference]: Start difference. First operand has 677 places, 472 transitions, 7789 flow. Second operand 18 states and 1693 transitions. [2022-07-19 21:29:31,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 514 transitions, 9021 flow [2022-07-19 21:29:31,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 690 places, 514 transitions, 8807 flow, removed 107 selfloop flow, removed 2 redundant places. [2022-07-19 21:29:31,969 INFO L242 Difference]: Finished difference. Result has 697 places, 481 transitions, 8140 flow [2022-07-19 21:29:31,969 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7577, PETRI_DIFFERENCE_MINUEND_PLACES=673, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8140, PETRI_PLACES=697, PETRI_TRANSITIONS=481} [2022-07-19 21:29:31,970 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 585 predicate places. [2022-07-19 21:29:31,970 INFO L495 AbstractCegarLoop]: Abstraction has has 697 places, 481 transitions, 8140 flow [2022-07-19 21:29:31,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:31,970 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:31,970 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] [2022-07-19 21:29:31,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-07-19 21:29:31,971 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:31,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:31,971 INFO L85 PathProgramCache]: Analyzing trace with hash 344790718, now seen corresponding path program 17 times [2022-07-19 21:29:31,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:31,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886648307] [2022-07-19 21:29:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:31,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:32,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:32,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886648307] [2022-07-19 21:29:32,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886648307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:32,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:32,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:32,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608848654] [2022-07-19 21:29:32,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:32,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:32,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:32,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:32,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:32,034 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:32,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 481 transitions, 8140 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:32,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:32,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:32,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:34,526 INFO L129 PetriNetUnfolder]: 2068/6663 cut-off events. [2022-07-19 21:29:34,527 INFO L130 PetriNetUnfolder]: For 85153/85285 co-relation queries the response was YES. [2022-07-19 21:29:34,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43540 conditions, 6663 events. 2068/6663 cut-off events. For 85153/85285 co-relation queries the response was YES. Maximal size of possible extension queue 962. Compared 78249 event pairs, 205 based on Foata normal form. 9/6581 useless extension candidates. Maximal degree in co-relation 43232. Up to 2024 conditions per place. [2022-07-19 21:29:34,682 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 273 selfloop transitions, 135 changer transitions 16/534 dead transitions. [2022-07-19 21:29:34,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 711 places, 534 transitions, 9699 flow [2022-07-19 21:29:34,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:29:34,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:29:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1603 transitions. [2022-07-19 21:29:34,684 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7604364326375711 [2022-07-19 21:29:34,684 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1603 transitions. [2022-07-19 21:29:34,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1603 transitions. [2022-07-19 21:29:34,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:34,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1603 transitions. [2022-07-19 21:29:34,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.29411764705883) internal successors, (1603), 17 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:34,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:34,687 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:34,687 INFO L186 Difference]: Start difference. First operand has 697 places, 481 transitions, 8140 flow. Second operand 17 states and 1603 transitions. [2022-07-19 21:29:34,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 711 places, 534 transitions, 9699 flow [2022-07-19 21:29:35,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 534 transitions, 9445 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-07-19 21:29:35,674 INFO L242 Difference]: Finished difference. Result has 713 places, 503 transitions, 8734 flow [2022-07-19 21:29:35,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7900, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8734, PETRI_PLACES=713, PETRI_TRANSITIONS=503} [2022-07-19 21:29:35,674 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 601 predicate places. [2022-07-19 21:29:35,675 INFO L495 AbstractCegarLoop]: Abstraction has has 713 places, 503 transitions, 8734 flow [2022-07-19 21:29:35,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:35,675 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:35,675 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:29:35,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-07-19 21:29:35,675 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:35,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:35,676 INFO L85 PathProgramCache]: Analyzing trace with hash -615116080, now seen corresponding path program 18 times [2022-07-19 21:29:35,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:35,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762069804] [2022-07-19 21:29:35,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:35,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:35,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:35,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762069804] [2022-07-19 21:29:35,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762069804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:35,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:35,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:35,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482533344] [2022-07-19 21:29:35,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:35,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:35,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:35,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:35,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:35,738 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:35,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 713 places, 503 transitions, 8734 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:35,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:35,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:35,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:38,341 INFO L129 PetriNetUnfolder]: 2155/6974 cut-off events. [2022-07-19 21:29:38,341 INFO L130 PetriNetUnfolder]: For 93267/93399 co-relation queries the response was YES. [2022-07-19 21:29:38,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46876 conditions, 6974 events. 2155/6974 cut-off events. For 93267/93399 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 82748 event pairs, 221 based on Foata normal form. 9/6890 useless extension candidates. Maximal degree in co-relation 46563. Up to 2057 conditions per place. [2022-07-19 21:29:38,551 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 299 selfloop transitions, 130 changer transitions 17/556 dead transitions. [2022-07-19 21:29:38,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 727 places, 556 transitions, 10355 flow [2022-07-19 21:29:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:29:38,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:29:38,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1607 transitions. [2022-07-19 21:29:38,553 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7623339658444023 [2022-07-19 21:29:38,553 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1607 transitions. [2022-07-19 21:29:38,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1607 transitions. [2022-07-19 21:29:38,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:38,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1607 transitions. [2022-07-19 21:29:38,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.52941176470588) internal successors, (1607), 17 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:38,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:38,556 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:38,557 INFO L186 Difference]: Start difference. First operand has 713 places, 503 transitions, 8734 flow. Second operand 17 states and 1607 transitions. [2022-07-19 21:29:38,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 727 places, 556 transitions, 10355 flow [2022-07-19 21:29:39,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 725 places, 556 transitions, 10163 flow, removed 96 selfloop flow, removed 2 redundant places. [2022-07-19 21:29:39,744 INFO L242 Difference]: Finished difference. Result has 733 places, 525 transitions, 9381 flow [2022-07-19 21:29:39,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8548, PETRI_DIFFERENCE_MINUEND_PLACES=709, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9381, PETRI_PLACES=733, PETRI_TRANSITIONS=525} [2022-07-19 21:29:39,745 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 621 predicate places. [2022-07-19 21:29:39,745 INFO L495 AbstractCegarLoop]: Abstraction has has 733 places, 525 transitions, 9381 flow [2022-07-19 21:29:39,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:39,746 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:39,746 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] [2022-07-19 21:29:39,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-07-19 21:29:39,746 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:39,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:39,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1683952160, now seen corresponding path program 19 times [2022-07-19 21:29:39,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:39,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872818093] [2022-07-19 21:29:39,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:39,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:39,839 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 21:29:39,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:39,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872818093] [2022-07-19 21:29:39,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872818093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:39,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:39,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:39,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333769757] [2022-07-19 21:29:39,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:39,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:39,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:39,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:39,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:39,841 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:39,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 733 places, 525 transitions, 9381 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:39,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:39,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:39,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:42,713 INFO L129 PetriNetUnfolder]: 2169/7214 cut-off events. [2022-07-19 21:29:42,714 INFO L130 PetriNetUnfolder]: For 100211/100343 co-relation queries the response was YES. [2022-07-19 21:29:42,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48386 conditions, 7214 events. 2169/7214 cut-off events. For 100211/100343 co-relation queries the response was YES. Maximal size of possible extension queue 1056. Compared 87118 event pairs, 219 based on Foata normal form. 9/7130 useless extension candidates. Maximal degree in co-relation 48066. Up to 2119 conditions per place. [2022-07-19 21:29:42,896 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 296 selfloop transitions, 135 changer transitions 21/562 dead transitions. [2022-07-19 21:29:42,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 748 places, 562 transitions, 10705 flow [2022-07-19 21:29:42,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:29:42,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:29:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1697 transitions. [2022-07-19 21:29:42,898 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7603046594982079 [2022-07-19 21:29:42,898 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1697 transitions. [2022-07-19 21:29:42,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1697 transitions. [2022-07-19 21:29:42,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:42,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1697 transitions. [2022-07-19 21:29:42,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.27777777777777) internal successors, (1697), 18 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:42,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:42,901 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:42,901 INFO L186 Difference]: Start difference. First operand has 733 places, 525 transitions, 9381 flow. Second operand 18 states and 1697 transitions. [2022-07-19 21:29:42,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 748 places, 562 transitions, 10705 flow [2022-07-19 21:29:44,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 745 places, 562 transitions, 10421 flow, removed 106 selfloop flow, removed 3 redundant places. [2022-07-19 21:29:44,221 INFO L242 Difference]: Finished difference. Result has 749 places, 534 transitions, 9656 flow [2022-07-19 21:29:44,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9131, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9656, PETRI_PLACES=749, PETRI_TRANSITIONS=534} [2022-07-19 21:29:44,221 INFO L279 CegarLoopForPetriNet]: 112 programPoint places, 637 predicate places. [2022-07-19 21:29:44,222 INFO L495 AbstractCegarLoop]: Abstraction has has 749 places, 534 transitions, 9656 flow [2022-07-19 21:29:44,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:44,222 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:44,222 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] [2022-07-19 21:29:44,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-07-19 21:29:44,222 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:44,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:44,223 INFO L85 PathProgramCache]: Analyzing trace with hash -2092837746, now seen corresponding path program 20 times [2022-07-19 21:29:44,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:44,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194748696] [2022-07-19 21:29:44,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:44,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:44,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:44,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194748696] [2022-07-19 21:29:44,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194748696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:44,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:44,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:29:44,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019204778] [2022-07-19 21:29:44,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:44,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:29:44,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:44,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:29:44,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:29:44,291 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-07-19 21:29:44,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 749 places, 534 transitions, 9656 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:44,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:44,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-07-19 21:29:44,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand