./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 846c6ea342419c7ea85c72de8af40f1cf8af72c22131b8a3f2ebdacec113c699 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:25:49,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:25:49,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:25:49,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:25:49,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:25:49,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:25:49,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:25:49,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:25:49,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:25:49,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:25:49,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:25:49,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:25:49,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:25:49,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:25:49,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:25:49,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:25:49,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:25:49,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:25:49,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:25:49,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:25:49,486 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:25:49,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:25:49,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:25:49,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:25:49,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:25:49,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:25:49,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:25:49,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:25:49,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:25:49,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:25:49,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:25:49,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:25:49,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:25:49,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:25:49,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:25:49,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:25:49,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:25:49,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:25:49,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:25:49,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:25:49,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:25:49,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:25:49,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:25:49,524 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:25:49,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:25:49,524 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:25:49,524 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:25:49,525 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:25:49,525 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:25:49,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:25:49,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:25:49,526 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:25:49,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:25:49,527 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:25:49,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:25:49,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:25:49,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:25:49,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:25:49,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:25:49,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:25:49,528 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:25:49,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:25:49,528 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:25:49,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:25:49,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:25:49,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:25:49,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:25:49,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:49,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:25:49,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:25:49,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:25:49,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:25:49,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:25:49,530 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:25:49,531 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:25:49,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:25:49,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 846c6ea342419c7ea85c72de8af40f1cf8af72c22131b8a3f2ebdacec113c699 [2022-07-19 21:25:49,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:25:49,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:25:49,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:25:49,813 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:25:49,813 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:25:49,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c [2022-07-19 21:25:49,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5252a0a4/0316bb89a8c14820a2bd77e7d79f60d8/FLAG026b6b4a3 [2022-07-19 21:25:50,277 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:25:50,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c [2022-07-19 21:25:50,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5252a0a4/0316bb89a8c14820a2bd77e7d79f60d8/FLAG026b6b4a3 [2022-07-19 21:25:50,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5252a0a4/0316bb89a8c14820a2bd77e7d79f60d8 [2022-07-19 21:25:50,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:25:50,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:25:50,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:50,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:25:50,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:25:50,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:50" (1/1) ... [2022-07-19 21:25:50,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@988a529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:50, skipping insertion in model container [2022-07-19 21:25:50,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:25:50" (1/1) ... [2022-07-19 21:25:50,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:25:50,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:25:50,893 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-file-item-symm.wvr.c[2495,2508] [2022-07-19 21:25:50,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:50,904 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:25:50,922 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-file-item-symm.wvr.c[2495,2508] [2022-07-19 21:25:50,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:25:50,939 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:25:50,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:50 WrapperNode [2022-07-19 21:25:50,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:25:50,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:50,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:25:50,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:25:50,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:50" (1/1) ... [2022-07-19 21:25:50,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:50" (1/1) ... [2022-07-19 21:25:50,998 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 158 [2022-07-19 21:25:50,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:25:50,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:25:50,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:25:50,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:25:51,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:50" (1/1) ... [2022-07-19 21:25:51,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:50" (1/1) ... [2022-07-19 21:25:51,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:50" (1/1) ... [2022-07-19 21:25:51,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:50" (1/1) ... [2022-07-19 21:25:51,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:50" (1/1) ... [2022-07-19 21:25:51,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:50" (1/1) ... [2022-07-19 21:25:51,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:50" (1/1) ... [2022-07-19 21:25:51,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:25:51,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:25:51,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:25:51,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:25:51,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:50" (1/1) ... [2022-07-19 21:25:51,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:25:51,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:25:51,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:25:51,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:25:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:25:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:25:51,082 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:25:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:25:51,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:25:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:25:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:25:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:25:51,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:25:51,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:25:51,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:25:51,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:25:51,085 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:25:51,279 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:25:51,281 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:25:51,650 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:25:51,660 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:25:51,660 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:25:51,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:51 BoogieIcfgContainer [2022-07-19 21:25:51,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:25:51,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:25:51,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:25:51,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:25:51,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:25:50" (1/3) ... [2022-07-19 21:25:51,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7501fb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:25:51, skipping insertion in model container [2022-07-19 21:25:51,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:25:50" (2/3) ... [2022-07-19 21:25:51,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7501fb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:25:51, skipping insertion in model container [2022-07-19 21:25:51,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:25:51" (3/3) ... [2022-07-19 21:25:51,675 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-file-item-symm.wvr.c [2022-07-19 21:25:51,680 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:25:51,689 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:25:51,689 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:25:51,689 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:25:51,765 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-19 21:25:51,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 198 places, 210 transitions, 436 flow [2022-07-19 21:25:51,883 INFO L129 PetriNetUnfolder]: 19/208 cut-off events. [2022-07-19 21:25:51,883 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:25:51,894 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 19/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 415 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2022-07-19 21:25:51,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 210 transitions, 436 flow [2022-07-19 21:25:51,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 199 transitions, 410 flow [2022-07-19 21:25:51,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:25:51,920 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@6b33375e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13b6eb67 [2022-07-19 21:25:51,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:25:51,963 INFO L129 PetriNetUnfolder]: 19/198 cut-off events. [2022-07-19 21:25:51,963 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:25:51,963 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:51,964 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:51,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:51,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:51,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1008090350, now seen corresponding path program 1 times [2022-07-19 21:25:51,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:51,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528651941] [2022-07-19 21:25:51,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:51,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:52,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:52,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528651941] [2022-07-19 21:25:52,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528651941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:52,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:52,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:52,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530844214] [2022-07-19 21:25:52,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:52,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:52,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:52,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:52,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:52,282 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-19 21:25:52,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 199 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:52,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-19 21:25:52,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:52,449 INFO L129 PetriNetUnfolder]: 46/577 cut-off events. [2022-07-19 21:25:52,449 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-07-19 21:25:52,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 577 events. 46/577 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3147 event pairs, 6 based on Foata normal form. 23/538 useless extension candidates. Maximal degree in co-relation 444. Up to 23 conditions per place. [2022-07-19 21:25:52,458 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 15 selfloop transitions, 3 changer transitions 3/198 dead transitions. [2022-07-19 21:25:52,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 198 transitions, 453 flow [2022-07-19 21:25:52,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:52,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:52,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2022-07-19 21:25:52,479 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9603174603174603 [2022-07-19 21:25:52,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2022-07-19 21:25:52,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2022-07-19 21:25:52,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:52,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2022-07-19 21:25:52,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,502 INFO L186 Difference]: Start difference. First operand has 187 places, 199 transitions, 410 flow. Second operand 3 states and 605 transitions. [2022-07-19 21:25:52,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 198 transitions, 453 flow [2022-07-19 21:25:52,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 198 transitions, 439 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:25:52,522 INFO L242 Difference]: Finished difference. Result has 187 places, 192 transitions, 412 flow [2022-07-19 21:25:52,525 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=187, PETRI_TRANSITIONS=192} [2022-07-19 21:25:52,528 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 0 predicate places. [2022-07-19 21:25:52,529 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 192 transitions, 412 flow [2022-07-19 21:25:52,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,530 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:52,530 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:52,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:25:52,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:52,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:52,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1177191630, now seen corresponding path program 1 times [2022-07-19 21:25:52,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:52,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443535760] [2022-07-19 21:25:52,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:52,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:52,668 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 21:25:52,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:52,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443535760] [2022-07-19 21:25:52,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443535760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:52,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:52,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:52,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844354780] [2022-07-19 21:25:52,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:52,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:52,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:52,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:52,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:52,678 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-19 21:25:52,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 192 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:52,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-19 21:25:52,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:52,752 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([620] thread1EXIT-->L68-2: Formula: (and (= v_thread1Thread1of1ForFork0_thidvar1_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem25#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread1Thread1of1ForFork0_thidvar0_4)) InVars {thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem25#1=|v_ULTIMATE.start_main_#t~mem25#1_5|} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem25#1=|v_ULTIMATE.start_main_#t~mem25#1_5|} AuxVars[] AssignedVars[][150], [17#L50-1true, 50#L68-2true, Black: 201#true, 209#(not (= (+ ~isNull_0~0 (* (- 256) (div ~isNull_0~0 256))) 0)), 203#(not (= (+ ~isNull_3~0 (* (- 256) (div ~isNull_3~0 256))) 0))]) [2022-07-19 21:25:52,758 INFO L384 tUnfolder$Statistics]: this new event has 70 ancestors and is cut-off event [2022-07-19 21:25:52,758 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-19 21:25:52,759 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-19 21:25:52,759 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-19 21:25:52,797 INFO L129 PetriNetUnfolder]: 50/851 cut-off events. [2022-07-19 21:25:52,797 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-07-19 21:25:52,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 851 events. 50/851 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5883 event pairs, 10 based on Foata normal form. 0/800 useless extension candidates. Maximal degree in co-relation 543. Up to 46 conditions per place. [2022-07-19 21:25:52,803 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 15 selfloop transitions, 3 changer transitions 0/198 dead transitions. [2022-07-19 21:25:52,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 198 transitions, 463 flow [2022-07-19 21:25:52,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:52,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:52,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-19 21:25:52,806 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-19 21:25:52,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-19 21:25:52,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-19 21:25:52,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:52,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-19 21:25:52,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,810 INFO L186 Difference]: Start difference. First operand has 187 places, 192 transitions, 412 flow. Second operand 3 states and 591 transitions. [2022-07-19 21:25:52,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 198 transitions, 463 flow [2022-07-19 21:25:52,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 198 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:25:52,820 INFO L242 Difference]: Finished difference. Result has 187 places, 195 transitions, 439 flow [2022-07-19 21:25:52,820 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=439, PETRI_PLACES=187, PETRI_TRANSITIONS=195} [2022-07-19 21:25:52,821 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 0 predicate places. [2022-07-19 21:25:52,821 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 195 transitions, 439 flow [2022-07-19 21:25:52,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,822 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:52,823 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:52,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:25:52,823 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:52,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:52,825 INFO L85 PathProgramCache]: Analyzing trace with hash 977078206, now seen corresponding path program 2 times [2022-07-19 21:25:52,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:52,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396834423] [2022-07-19 21:25:52,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:52,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:52,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:52,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396834423] [2022-07-19 21:25:52,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396834423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:52,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:52,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:52,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972973117] [2022-07-19 21:25:52,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:52,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:52,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:52,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:52,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:52,928 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-19 21:25:52,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 195 transitions, 439 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:52,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:52,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-19 21:25:52,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:53,020 INFO L129 PetriNetUnfolder]: 37/733 cut-off events. [2022-07-19 21:25:53,020 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-07-19 21:25:53,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 733 events. 37/733 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4638 event pairs, 8 based on Foata normal form. 0/692 useless extension candidates. Maximal degree in co-relation 484. Up to 27 conditions per place. [2022-07-19 21:25:53,026 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 16 selfloop transitions, 5 changer transitions 0/201 dead transitions. [2022-07-19 21:25:53,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 201 transitions, 502 flow [2022-07-19 21:25:53,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:53,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:53,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-19 21:25:53,029 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-19 21:25:53,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-19 21:25:53,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-19 21:25:53,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:53,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-19 21:25:53,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,034 INFO L186 Difference]: Start difference. First operand has 187 places, 195 transitions, 439 flow. Second operand 3 states and 591 transitions. [2022-07-19 21:25:53,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 201 transitions, 502 flow [2022-07-19 21:25:53,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 201 transitions, 499 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:25:53,042 INFO L242 Difference]: Finished difference. Result has 190 places, 198 transitions, 480 flow [2022-07-19 21:25:53,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=190, PETRI_TRANSITIONS=198} [2022-07-19 21:25:53,045 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 3 predicate places. [2022-07-19 21:25:53,045 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 198 transitions, 480 flow [2022-07-19 21:25:53,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,046 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:53,046 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:53,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:25:53,047 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:53,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:53,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2000243524, now seen corresponding path program 1 times [2022-07-19 21:25:53,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:53,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994660431] [2022-07-19 21:25:53,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:53,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:53,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:53,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994660431] [2022-07-19 21:25:53,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994660431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:53,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:53,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:53,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338964003] [2022-07-19 21:25:53,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:53,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:53,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:53,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:53,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:53,300 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:25:53,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 198 transitions, 480 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:53,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:53,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:25:53,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:53,803 INFO L129 PetriNetUnfolder]: 212/1287 cut-off events. [2022-07-19 21:25:53,803 INFO L130 PetriNetUnfolder]: For 59/79 co-relation queries the response was YES. [2022-07-19 21:25:53,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 1287 events. 212/1287 cut-off events. For 59/79 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9980 event pairs, 88 based on Foata normal form. 1/1223 useless extension candidates. Maximal degree in co-relation 1038. Up to 333 conditions per place. [2022-07-19 21:25:53,813 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 77 selfloop transitions, 5 changer transitions 34/282 dead transitions. [2022-07-19 21:25:53,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 282 transitions, 893 flow [2022-07-19 21:25:53,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:25:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:25:53,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4125 transitions. [2022-07-19 21:25:53,823 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8184523809523809 [2022-07-19 21:25:53,824 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4125 transitions. [2022-07-19 21:25:53,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4125 transitions. [2022-07-19 21:25:53,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:53,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4125 transitions. [2022-07-19 21:25:53,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.875) internal successors, (4125), 24 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,851 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,852 INFO L186 Difference]: Start difference. First operand has 190 places, 198 transitions, 480 flow. Second operand 24 states and 4125 transitions. [2022-07-19 21:25:53,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 282 transitions, 893 flow [2022-07-19 21:25:53,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 282 transitions, 877 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:53,860 INFO L242 Difference]: Finished difference. Result has 233 places, 202 transitions, 555 flow [2022-07-19 21:25:53,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=555, PETRI_PLACES=233, PETRI_TRANSITIONS=202} [2022-07-19 21:25:53,861 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 46 predicate places. [2022-07-19 21:25:53,862 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 202 transitions, 555 flow [2022-07-19 21:25:53,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:53,863 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:53,863 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:53,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:25:53,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:53,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:53,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1874070520, now seen corresponding path program 1 times [2022-07-19 21:25:53,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:53,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950071852] [2022-07-19 21:25:53,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:53,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:53,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:53,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950071852] [2022-07-19 21:25:53,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950071852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:53,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:53,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:25:53,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965824240] [2022-07-19 21:25:53,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:53,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:25:53,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:53,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:25:53,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:25:53,916 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-19 21:25:53,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 202 transitions, 555 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:53,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:53,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-19 21:25:53,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:54,030 INFO L129 PetriNetUnfolder]: 54/796 cut-off events. [2022-07-19 21:25:54,031 INFO L130 PetriNetUnfolder]: For 759/774 co-relation queries the response was YES. [2022-07-19 21:25:54,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 796 events. 54/796 cut-off events. For 759/774 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5222 event pairs, 27 based on Foata normal form. 4/754 useless extension candidates. Maximal degree in co-relation 1305. Up to 38 conditions per place. [2022-07-19 21:25:54,036 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 16 selfloop transitions, 5 changer transitions 0/208 dead transitions. [2022-07-19 21:25:54,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 208 transitions, 618 flow [2022-07-19 21:25:54,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:25:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:25:54,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-19 21:25:54,038 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-19 21:25:54,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-19 21:25:54,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-19 21:25:54,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:54,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-19 21:25:54,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,042 INFO L186 Difference]: Start difference. First operand has 233 places, 202 transitions, 555 flow. Second operand 3 states and 591 transitions. [2022-07-19 21:25:54,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 208 transitions, 618 flow [2022-07-19 21:25:54,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 208 transitions, 599 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-07-19 21:25:54,051 INFO L242 Difference]: Finished difference. Result has 210 places, 205 transitions, 580 flow [2022-07-19 21:25:54,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=580, PETRI_PLACES=210, PETRI_TRANSITIONS=205} [2022-07-19 21:25:54,052 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 23 predicate places. [2022-07-19 21:25:54,052 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 205 transitions, 580 flow [2022-07-19 21:25:54,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,053 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:54,053 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:54,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:25:54,053 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:54,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:54,054 INFO L85 PathProgramCache]: Analyzing trace with hash -502961112, now seen corresponding path program 2 times [2022-07-19 21:25:54,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:54,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269131885] [2022-07-19 21:25:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:54,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:54,161 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 21:25:54,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:54,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269131885] [2022-07-19 21:25:54,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269131885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:54,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:54,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:54,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129691286] [2022-07-19 21:25:54,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:54,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:54,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:54,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:54,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:54,166 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:25:54,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 205 transitions, 580 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:54,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:54,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:25:54,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:54,576 INFO L129 PetriNetUnfolder]: 145/1067 cut-off events. [2022-07-19 21:25:54,576 INFO L130 PetriNetUnfolder]: For 786/808 co-relation queries the response was YES. [2022-07-19 21:25:54,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 1067 events. 145/1067 cut-off events. For 786/808 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7876 event pairs, 87 based on Foata normal form. 1/1013 useless extension candidates. Maximal degree in co-relation 1577. Up to 279 conditions per place. [2022-07-19 21:25:54,583 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 72 selfloop transitions, 5 changer transitions 35/281 dead transitions. [2022-07-19 21:25:54,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 281 transitions, 1160 flow [2022-07-19 21:25:54,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:25:54,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:25:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4117 transitions. [2022-07-19 21:25:54,593 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8168650793650793 [2022-07-19 21:25:54,593 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4117 transitions. [2022-07-19 21:25:54,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4117 transitions. [2022-07-19 21:25:54,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:54,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4117 transitions. [2022-07-19 21:25:54,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.54166666666666) internal successors, (4117), 24 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,615 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:54,616 INFO L186 Difference]: Start difference. First operand has 210 places, 205 transitions, 580 flow. Second operand 24 states and 4117 transitions. [2022-07-19 21:25:54,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 281 transitions, 1160 flow [2022-07-19 21:25:54,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 281 transitions, 1144 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-19 21:25:54,626 INFO L242 Difference]: Finished difference. Result has 253 places, 209 transitions, 671 flow [2022-07-19 21:25:54,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=671, PETRI_PLACES=253, PETRI_TRANSITIONS=209} [2022-07-19 21:25:54,629 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 66 predicate places. [2022-07-19 21:25:54,629 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 209 transitions, 671 flow [2022-07-19 21:25:54,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:54,631 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:54,631 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:54,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:25:54,632 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:54,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:54,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1915177424, now seen corresponding path program 3 times [2022-07-19 21:25:54,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:54,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896971604] [2022-07-19 21:25:54,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:54,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:54,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:54,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:54,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896971604] [2022-07-19 21:25:54,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896971604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:54,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:54,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:54,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285170283] [2022-07-19 21:25:54,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:54,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:54,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:54,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:54,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:54,819 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:25:54,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 209 transitions, 671 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:54,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:54,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:25:54,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:55,228 INFO L129 PetriNetUnfolder]: 157/1138 cut-off events. [2022-07-19 21:25:55,229 INFO L130 PetriNetUnfolder]: For 3105/3120 co-relation queries the response was YES. [2022-07-19 21:25:55,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2957 conditions, 1138 events. 157/1138 cut-off events. For 3105/3120 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8636 event pairs, 91 based on Foata normal form. 1/1081 useless extension candidates. Maximal degree in co-relation 2815. Up to 315 conditions per place. [2022-07-19 21:25:55,240 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 57 selfloop transitions, 12 changer transitions 28/266 dead transitions. [2022-07-19 21:25:55,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 266 transitions, 1383 flow [2022-07-19 21:25:55,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:25:55,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:25:55,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3768 transitions. [2022-07-19 21:25:55,249 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8155844155844156 [2022-07-19 21:25:55,249 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3768 transitions. [2022-07-19 21:25:55,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3768 transitions. [2022-07-19 21:25:55,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:55,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3768 transitions. [2022-07-19 21:25:55,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.27272727272728) internal successors, (3768), 22 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,267 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,267 INFO L186 Difference]: Start difference. First operand has 253 places, 209 transitions, 671 flow. Second operand 22 states and 3768 transitions. [2022-07-19 21:25:55,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 266 transitions, 1383 flow [2022-07-19 21:25:55,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 266 transitions, 1128 flow, removed 126 selfloop flow, removed 10 redundant places. [2022-07-19 21:25:55,287 INFO L242 Difference]: Finished difference. Result has 261 places, 219 transitions, 758 flow [2022-07-19 21:25:55,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=758, PETRI_PLACES=261, PETRI_TRANSITIONS=219} [2022-07-19 21:25:55,288 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 74 predicate places. [2022-07-19 21:25:55,288 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 219 transitions, 758 flow [2022-07-19 21:25:55,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:55,301 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:55,301 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:55,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:25:55,302 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:55,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:55,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1894136750, now seen corresponding path program 4 times [2022-07-19 21:25:55,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:55,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31765750] [2022-07-19 21:25:55,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:55,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:55,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:55,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:55,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31765750] [2022-07-19 21:25:55,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31765750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:55,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:55,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:55,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143142489] [2022-07-19 21:25:55,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:55,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:55,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:55,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:55,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:55,469 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:25:55,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 219 transitions, 758 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:55,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:55,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:25:55,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:55,916 INFO L129 PetriNetUnfolder]: 173/1191 cut-off events. [2022-07-19 21:25:55,917 INFO L130 PetriNetUnfolder]: For 2873/2890 co-relation queries the response was YES. [2022-07-19 21:25:55,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3117 conditions, 1191 events. 173/1191 cut-off events. For 2873/2890 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 9198 event pairs, 101 based on Foata normal form. 2/1132 useless extension candidates. Maximal degree in co-relation 2970. Up to 329 conditions per place. [2022-07-19 21:25:55,929 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 60 selfloop transitions, 17 changer transitions 28/274 dead transitions. [2022-07-19 21:25:55,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 274 transitions, 1465 flow [2022-07-19 21:25:55,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:25:55,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:25:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3603 transitions. [2022-07-19 21:25:55,937 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8170068027210884 [2022-07-19 21:25:55,938 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3603 transitions. [2022-07-19 21:25:55,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3603 transitions. [2022-07-19 21:25:55,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:55,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3603 transitions. [2022-07-19 21:25:55,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.57142857142858) internal successors, (3603), 21 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,953 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:55,954 INFO L186 Difference]: Start difference. First operand has 261 places, 219 transitions, 758 flow. Second operand 21 states and 3603 transitions. [2022-07-19 21:25:55,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 274 transitions, 1465 flow [2022-07-19 21:25:55,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 274 transitions, 1315 flow, removed 75 selfloop flow, removed 17 redundant places. [2022-07-19 21:25:55,973 INFO L242 Difference]: Finished difference. Result has 267 places, 229 transitions, 916 flow [2022-07-19 21:25:55,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=916, PETRI_PLACES=267, PETRI_TRANSITIONS=229} [2022-07-19 21:25:55,974 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 80 predicate places. [2022-07-19 21:25:55,974 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 229 transitions, 916 flow [2022-07-19 21:25:55,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:55,975 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:55,975 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:55,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:25:55,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:55,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:55,976 INFO L85 PathProgramCache]: Analyzing trace with hash -841789276, now seen corresponding path program 5 times [2022-07-19 21:25:55,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:55,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206601097] [2022-07-19 21:25:55,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:55,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:56,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:56,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206601097] [2022-07-19 21:25:56,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206601097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:56,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:56,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:56,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852261082] [2022-07-19 21:25:56,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:56,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:56,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:56,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:56,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:56,118 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:25:56,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 229 transitions, 916 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:56,119 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:56,119 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:25:56,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:56,498 INFO L129 PetriNetUnfolder]: 169/1221 cut-off events. [2022-07-19 21:25:56,498 INFO L130 PetriNetUnfolder]: For 2708/2731 co-relation queries the response was YES. [2022-07-19 21:25:56,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3127 conditions, 1221 events. 169/1221 cut-off events. For 2708/2731 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9568 event pairs, 106 based on Foata normal form. 1/1166 useless extension candidates. Maximal degree in co-relation 3009. Up to 317 conditions per place. [2022-07-19 21:25:56,511 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 59 selfloop transitions, 23 changer transitions 28/279 dead transitions. [2022-07-19 21:25:56,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 279 transitions, 1689 flow [2022-07-19 21:25:56,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:25:56,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:25:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3433 transitions. [2022-07-19 21:25:56,517 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8173809523809524 [2022-07-19 21:25:56,517 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3433 transitions. [2022-07-19 21:25:56,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3433 transitions. [2022-07-19 21:25:56,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:56,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3433 transitions. [2022-07-19 21:25:56,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.65) internal successors, (3433), 20 states have internal predecessors, (3433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,529 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:56,530 INFO L186 Difference]: Start difference. First operand has 267 places, 229 transitions, 916 flow. Second operand 20 states and 3433 transitions. [2022-07-19 21:25:56,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 279 transitions, 1689 flow [2022-07-19 21:25:56,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 279 transitions, 1567 flow, removed 56 selfloop flow, removed 10 redundant places. [2022-07-19 21:25:56,549 INFO L242 Difference]: Finished difference. Result has 280 places, 237 transitions, 1092 flow [2022-07-19 21:25:56,550 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1092, PETRI_PLACES=280, PETRI_TRANSITIONS=237} [2022-07-19 21:25:56,550 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 93 predicate places. [2022-07-19 21:25:56,551 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 237 transitions, 1092 flow [2022-07-19 21:25:56,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:56,551 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:56,552 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:56,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:25:56,552 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:56,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:56,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1787339340, now seen corresponding path program 6 times [2022-07-19 21:25:56,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:56,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144276978] [2022-07-19 21:25:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:56,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:56,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:56,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144276978] [2022-07-19 21:25:56,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144276978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:56,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:56,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:56,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412432676] [2022-07-19 21:25:56,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:56,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:56,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:56,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:56,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:56,682 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:25:56,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 237 transitions, 1092 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:56,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:56,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:25:56,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:57,046 INFO L129 PetriNetUnfolder]: 164/1194 cut-off events. [2022-07-19 21:25:57,046 INFO L130 PetriNetUnfolder]: For 3429/3453 co-relation queries the response was YES. [2022-07-19 21:25:57,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3249 conditions, 1194 events. 164/1194 cut-off events. For 3429/3453 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9313 event pairs, 98 based on Foata normal form. 1/1133 useless extension candidates. Maximal degree in co-relation 3102. Up to 340 conditions per place. [2022-07-19 21:25:57,059 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 68 selfloop transitions, 22 changer transitions 32/291 dead transitions. [2022-07-19 21:25:57,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 291 transitions, 1994 flow [2022-07-19 21:25:57,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:25:57,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:25:57,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3429 transitions. [2022-07-19 21:25:57,065 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8164285714285714 [2022-07-19 21:25:57,065 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3429 transitions. [2022-07-19 21:25:57,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3429 transitions. [2022-07-19 21:25:57,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:57,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3429 transitions. [2022-07-19 21:25:57,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.45) internal successors, (3429), 20 states have internal predecessors, (3429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,076 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,076 INFO L186 Difference]: Start difference. First operand has 280 places, 237 transitions, 1092 flow. Second operand 20 states and 3429 transitions. [2022-07-19 21:25:57,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 291 transitions, 1994 flow [2022-07-19 21:25:57,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 291 transitions, 1848 flow, removed 62 selfloop flow, removed 10 redundant places. [2022-07-19 21:25:57,100 INFO L242 Difference]: Finished difference. Result has 292 places, 244 transitions, 1215 flow [2022-07-19 21:25:57,101 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1215, PETRI_PLACES=292, PETRI_TRANSITIONS=244} [2022-07-19 21:25:57,102 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 105 predicate places. [2022-07-19 21:25:57,102 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 244 transitions, 1215 flow [2022-07-19 21:25:57,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:57,103 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:57,103 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:57,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:25:57,103 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:57,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:57,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1332304252, now seen corresponding path program 7 times [2022-07-19 21:25:57,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:57,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601034776] [2022-07-19 21:25:57,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:57,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:57,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:57,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601034776] [2022-07-19 21:25:57,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601034776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:57,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:57,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:57,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996997932] [2022-07-19 21:25:57,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:57,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:57,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:57,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:57,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:57,226 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:25:57,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 244 transitions, 1215 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:57,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:57,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:25:57,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:57,585 INFO L129 PetriNetUnfolder]: 159/1156 cut-off events. [2022-07-19 21:25:57,586 INFO L130 PetriNetUnfolder]: For 3307/3333 co-relation queries the response was YES. [2022-07-19 21:25:57,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3139 conditions, 1156 events. 159/1156 cut-off events. For 3307/3333 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8922 event pairs, 91 based on Foata normal form. 7/1105 useless extension candidates. Maximal degree in co-relation 2977. Up to 330 conditions per place. [2022-07-19 21:25:57,599 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 67 selfloop transitions, 27 changer transitions 22/285 dead transitions. [2022-07-19 21:25:57,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 285 transitions, 1955 flow [2022-07-19 21:25:57,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:25:57,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:25:57,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3088 transitions. [2022-07-19 21:25:57,637 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.816931216931217 [2022-07-19 21:25:57,637 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3088 transitions. [2022-07-19 21:25:57,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3088 transitions. [2022-07-19 21:25:57,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:57,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3088 transitions. [2022-07-19 21:25:57,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.55555555555554) internal successors, (3088), 18 states have internal predecessors, (3088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,647 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:57,648 INFO L186 Difference]: Start difference. First operand has 292 places, 244 transitions, 1215 flow. Second operand 18 states and 3088 transitions. [2022-07-19 21:25:57,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 285 transitions, 1955 flow [2022-07-19 21:25:57,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 285 transitions, 1790 flow, removed 59 selfloop flow, removed 14 redundant places. [2022-07-19 21:25:57,671 INFO L242 Difference]: Finished difference. Result has 292 places, 251 transitions, 1305 flow [2022-07-19 21:25:57,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1305, PETRI_PLACES=292, PETRI_TRANSITIONS=251} [2022-07-19 21:25:57,672 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 105 predicate places. [2022-07-19 21:25:57,672 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 251 transitions, 1305 flow [2022-07-19 21:25:57,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:57,673 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:57,673 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:57,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:25:57,674 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:57,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:57,674 INFO L85 PathProgramCache]: Analyzing trace with hash -634262104, now seen corresponding path program 8 times [2022-07-19 21:25:57,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:57,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146679425] [2022-07-19 21:25:57,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:57,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:57,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:57,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146679425] [2022-07-19 21:25:57,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146679425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:57,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:57,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:57,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898048669] [2022-07-19 21:25:57,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:57,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:57,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:57,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:57,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:57,778 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:25:57,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 251 transitions, 1305 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:57,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:57,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:25:57,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:58,138 INFO L129 PetriNetUnfolder]: 149/1118 cut-off events. [2022-07-19 21:25:58,139 INFO L130 PetriNetUnfolder]: For 2822/2850 co-relation queries the response was YES. [2022-07-19 21:25:58,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2988 conditions, 1118 events. 149/1118 cut-off events. For 2822/2850 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8537 event pairs, 91 based on Foata normal form. 7/1067 useless extension candidates. Maximal degree in co-relation 2829. Up to 324 conditions per place. [2022-07-19 21:25:58,149 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 61 selfloop transitions, 14 changer transitions 30/274 dead transitions. [2022-07-19 21:25:58,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 274 transitions, 1785 flow [2022-07-19 21:25:58,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:25:58,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:25:58,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2747 transitions. [2022-07-19 21:25:58,152 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8175595238095238 [2022-07-19 21:25:58,152 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2747 transitions. [2022-07-19 21:25:58,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2747 transitions. [2022-07-19 21:25:58,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:58,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2747 transitions. [2022-07-19 21:25:58,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.6875) internal successors, (2747), 16 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,160 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,160 INFO L186 Difference]: Start difference. First operand has 292 places, 251 transitions, 1305 flow. Second operand 16 states and 2747 transitions. [2022-07-19 21:25:58,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 274 transitions, 1785 flow [2022-07-19 21:25:58,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 274 transitions, 1716 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-07-19 21:25:58,184 INFO L242 Difference]: Finished difference. Result has 295 places, 235 transitions, 1060 flow [2022-07-19 21:25:58,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1060, PETRI_PLACES=295, PETRI_TRANSITIONS=235} [2022-07-19 21:25:58,185 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-07-19 21:25:58,185 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 235 transitions, 1060 flow [2022-07-19 21:25:58,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:58,185 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:58,185 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:58,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:25:58,186 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:58,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:58,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1061997622, now seen corresponding path program 9 times [2022-07-19 21:25:58,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:58,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790306861] [2022-07-19 21:25:58,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:58,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:58,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:58,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:58,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790306861] [2022-07-19 21:25:58,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790306861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:58,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:58,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:58,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362031171] [2022-07-19 21:25:58,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:58,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:58,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:58,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:58,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:58,311 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:25:58,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 235 transitions, 1060 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:58,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:58,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:25:58,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:58,664 INFO L129 PetriNetUnfolder]: 152/1116 cut-off events. [2022-07-19 21:25:58,664 INFO L130 PetriNetUnfolder]: For 2893/2917 co-relation queries the response was YES. [2022-07-19 21:25:58,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2965 conditions, 1116 events. 152/1116 cut-off events. For 2893/2917 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8455 event pairs, 95 based on Foata normal form. 3/1060 useless extension candidates. Maximal degree in co-relation 2907. Up to 324 conditions per place. [2022-07-19 21:25:58,676 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 58 selfloop transitions, 23 changer transitions 21/271 dead transitions. [2022-07-19 21:25:58,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 271 transitions, 1714 flow [2022-07-19 21:25:58,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:25:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:25:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3089 transitions. [2022-07-19 21:25:58,682 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8171957671957671 [2022-07-19 21:25:58,682 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3089 transitions. [2022-07-19 21:25:58,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3089 transitions. [2022-07-19 21:25:58,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:58,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3089 transitions. [2022-07-19 21:25:58,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.61111111111111) internal successors, (3089), 18 states have internal predecessors, (3089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,693 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:58,693 INFO L186 Difference]: Start difference. First operand has 295 places, 235 transitions, 1060 flow. Second operand 18 states and 3089 transitions. [2022-07-19 21:25:58,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 271 transitions, 1714 flow [2022-07-19 21:25:58,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 271 transitions, 1586 flow, removed 25 selfloop flow, removed 16 redundant places. [2022-07-19 21:25:58,713 INFO L242 Difference]: Finished difference. Result has 284 places, 244 transitions, 1201 flow [2022-07-19 21:25:58,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1201, PETRI_PLACES=284, PETRI_TRANSITIONS=244} [2022-07-19 21:25:58,714 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 97 predicate places. [2022-07-19 21:25:58,714 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 244 transitions, 1201 flow [2022-07-19 21:25:58,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:58,715 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:58,715 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:58,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:25:58,715 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:58,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:58,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1404461984, now seen corresponding path program 10 times [2022-07-19 21:25:58,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:58,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995069348] [2022-07-19 21:25:58,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:58,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:58,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:58,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995069348] [2022-07-19 21:25:58,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995069348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:58,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:58,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:58,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162533771] [2022-07-19 21:25:58,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:58,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:58,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:58,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:58,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:58,835 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:25:58,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 244 transitions, 1201 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:58,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:58,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:25:58,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:59,176 INFO L129 PetriNetUnfolder]: 149/1139 cut-off events. [2022-07-19 21:25:59,176 INFO L130 PetriNetUnfolder]: For 2428/2447 co-relation queries the response was YES. [2022-07-19 21:25:59,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 1139 events. 149/1139 cut-off events. For 2428/2447 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8744 event pairs, 96 based on Foata normal form. 1/1080 useless extension candidates. Maximal degree in co-relation 2880. Up to 324 conditions per place. [2022-07-19 21:25:59,188 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 59 selfloop transitions, 24 changer transitions 22/274 dead transitions. [2022-07-19 21:25:59,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 274 transitions, 1780 flow [2022-07-19 21:25:59,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:25:59,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:25:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2921 transitions. [2022-07-19 21:25:59,191 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8182072829131652 [2022-07-19 21:25:59,192 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2921 transitions. [2022-07-19 21:25:59,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2921 transitions. [2022-07-19 21:25:59,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:59,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2921 transitions. [2022-07-19 21:25:59,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.8235294117647) internal successors, (2921), 17 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,200 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,201 INFO L186 Difference]: Start difference. First operand has 284 places, 244 transitions, 1201 flow. Second operand 17 states and 2921 transitions. [2022-07-19 21:25:59,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 274 transitions, 1780 flow [2022-07-19 21:25:59,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 274 transitions, 1737 flow, removed 16 selfloop flow, removed 5 redundant places. [2022-07-19 21:25:59,221 INFO L242 Difference]: Finished difference. Result has 295 places, 247 transitions, 1304 flow [2022-07-19 21:25:59,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1304, PETRI_PLACES=295, PETRI_TRANSITIONS=247} [2022-07-19 21:25:59,222 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-07-19 21:25:59,222 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 247 transitions, 1304 flow [2022-07-19 21:25:59,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:59,222 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:59,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:59,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:25:59,223 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:59,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:59,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2017029460, now seen corresponding path program 11 times [2022-07-19 21:25:59,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:59,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077361285] [2022-07-19 21:25:59,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:59,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:59,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:59,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077361285] [2022-07-19 21:25:59,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077361285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:59,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:59,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:59,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425973901] [2022-07-19 21:25:59,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:59,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:59,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:59,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:59,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:59,355 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:25:59,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 247 transitions, 1304 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:59,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:59,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:25:59,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:25:59,694 INFO L129 PetriNetUnfolder]: 146/1118 cut-off events. [2022-07-19 21:25:59,694 INFO L130 PetriNetUnfolder]: For 2580/2602 co-relation queries the response was YES. [2022-07-19 21:25:59,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2906 conditions, 1118 events. 146/1118 cut-off events. For 2580/2602 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8501 event pairs, 94 based on Foata normal form. 3/1061 useless extension candidates. Maximal degree in co-relation 2846. Up to 324 conditions per place. [2022-07-19 21:25:59,704 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 58 selfloop transitions, 15 changer transitions 29/271 dead transitions. [2022-07-19 21:25:59,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 271 transitions, 1767 flow [2022-07-19 21:25:59,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:25:59,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:25:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3088 transitions. [2022-07-19 21:25:59,708 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.816931216931217 [2022-07-19 21:25:59,708 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3088 transitions. [2022-07-19 21:25:59,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3088 transitions. [2022-07-19 21:25:59,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:25:59,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3088 transitions. [2022-07-19 21:25:59,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.55555555555554) internal successors, (3088), 18 states have internal predecessors, (3088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,717 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:25:59,717 INFO L186 Difference]: Start difference. First operand has 295 places, 247 transitions, 1304 flow. Second operand 18 states and 3088 transitions. [2022-07-19 21:25:59,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 271 transitions, 1767 flow [2022-07-19 21:25:59,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 271 transitions, 1678 flow, removed 23 selfloop flow, removed 7 redundant places. [2022-07-19 21:25:59,739 INFO L242 Difference]: Finished difference. Result has 305 places, 238 transitions, 1138 flow [2022-07-19 21:25:59,739 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1138, PETRI_PLACES=305, PETRI_TRANSITIONS=238} [2022-07-19 21:25:59,739 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 118 predicate places. [2022-07-19 21:25:59,740 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 238 transitions, 1138 flow [2022-07-19 21:25:59,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:59,740 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:25:59,740 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:25:59,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:25:59,741 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:25:59,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:25:59,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2112829846, now seen corresponding path program 12 times [2022-07-19 21:25:59,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:25:59,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868980058] [2022-07-19 21:25:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:25:59,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:25:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:25:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:25:59,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:25:59,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868980058] [2022-07-19 21:25:59,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868980058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:25:59,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:25:59,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:25:59,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936455967] [2022-07-19 21:25:59,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:25:59,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:25:59,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:25:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:25:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:25:59,862 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:25:59,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 238 transitions, 1138 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:25:59,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:25:59,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:25:59,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:00,172 INFO L129 PetriNetUnfolder]: 136/1071 cut-off events. [2022-07-19 21:26:00,173 INFO L130 PetriNetUnfolder]: For 2294/2316 co-relation queries the response was YES. [2022-07-19 21:26:00,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2665 conditions, 1071 events. 136/1071 cut-off events. For 2294/2316 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8002 event pairs, 92 based on Foata normal form. 3/1016 useless extension candidates. Maximal degree in co-relation 2602. Up to 311 conditions per place. [2022-07-19 21:26:00,181 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 49 selfloop transitions, 3 changer transitions 34/255 dead transitions. [2022-07-19 21:26:00,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 255 transitions, 1460 flow [2022-07-19 21:26:00,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:26:00,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:26:00,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2912 transitions. [2022-07-19 21:26:00,185 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8156862745098039 [2022-07-19 21:26:00,185 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2912 transitions. [2022-07-19 21:26:00,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2912 transitions. [2022-07-19 21:26:00,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:00,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2912 transitions. [2022-07-19 21:26:00,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.2941176470588) internal successors, (2912), 17 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,194 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,194 INFO L186 Difference]: Start difference. First operand has 305 places, 238 transitions, 1138 flow. Second operand 17 states and 2912 transitions. [2022-07-19 21:26:00,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 255 transitions, 1460 flow [2022-07-19 21:26:00,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 255 transitions, 1334 flow, removed 27 selfloop flow, removed 22 redundant places. [2022-07-19 21:26:00,213 INFO L242 Difference]: Finished difference. Result has 287 places, 218 transitions, 777 flow [2022-07-19 21:26:00,214 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=777, PETRI_PLACES=287, PETRI_TRANSITIONS=218} [2022-07-19 21:26:00,214 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2022-07-19 21:26:00,214 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 218 transitions, 777 flow [2022-07-19 21:26:00,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:00,215 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:00,215 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:00,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:26:00,215 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:00,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:00,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1779128098, now seen corresponding path program 13 times [2022-07-19 21:26:00,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:00,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219566010] [2022-07-19 21:26:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:00,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:00,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:00,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219566010] [2022-07-19 21:26:00,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219566010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:00,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:00,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:00,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187233995] [2022-07-19 21:26:00,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:00,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:00,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:00,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:00,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:00,309 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:00,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 218 transitions, 777 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:00,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:00,310 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:00,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:00,673 INFO L129 PetriNetUnfolder]: 141/1110 cut-off events. [2022-07-19 21:26:00,673 INFO L130 PetriNetUnfolder]: For 2085/2099 co-relation queries the response was YES. [2022-07-19 21:26:00,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2651 conditions, 1110 events. 141/1110 cut-off events. For 2085/2099 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8451 event pairs, 87 based on Foata normal form. 1/1057 useless extension candidates. Maximal degree in co-relation 2598. Up to 291 conditions per place. [2022-07-19 21:26:00,684 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 55 selfloop transitions, 19 changer transitions 28/271 dead transitions. [2022-07-19 21:26:00,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 271 transitions, 1568 flow [2022-07-19 21:26:00,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:26:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:26:00,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3765 transitions. [2022-07-19 21:26:00,693 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.814935064935065 [2022-07-19 21:26:00,694 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3765 transitions. [2022-07-19 21:26:00,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3765 transitions. [2022-07-19 21:26:00,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:00,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3765 transitions. [2022-07-19 21:26:00,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.13636363636363) internal successors, (3765), 22 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,708 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:00,708 INFO L186 Difference]: Start difference. First operand has 287 places, 218 transitions, 777 flow. Second operand 22 states and 3765 transitions. [2022-07-19 21:26:00,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 271 transitions, 1568 flow [2022-07-19 21:26:00,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 271 transitions, 1342 flow, removed 40 selfloop flow, removed 24 redundant places. [2022-07-19 21:26:00,723 INFO L242 Difference]: Finished difference. Result has 269 places, 229 transitions, 884 flow [2022-07-19 21:26:00,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=884, PETRI_PLACES=269, PETRI_TRANSITIONS=229} [2022-07-19 21:26:00,725 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 82 predicate places. [2022-07-19 21:26:00,725 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 229 transitions, 884 flow [2022-07-19 21:26:00,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:00,725 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:00,726 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:00,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:26:00,727 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:00,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:00,727 INFO L85 PathProgramCache]: Analyzing trace with hash 841188992, now seen corresponding path program 14 times [2022-07-19 21:26:00,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:00,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563343981] [2022-07-19 21:26:00,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:00,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:00,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:00,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563343981] [2022-07-19 21:26:00,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563343981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:00,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:00,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:00,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991404925] [2022-07-19 21:26:00,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:00,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:00,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:00,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:00,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:00,847 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:00,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 229 transitions, 884 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:00,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:00,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:00,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:01,223 INFO L129 PetriNetUnfolder]: 138/1076 cut-off events. [2022-07-19 21:26:01,224 INFO L130 PetriNetUnfolder]: For 1641/1655 co-relation queries the response was YES. [2022-07-19 21:26:01,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2578 conditions, 1076 events. 138/1076 cut-off events. For 1641/1655 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8104 event pairs, 88 based on Foata normal form. 1/1021 useless extension candidates. Maximal degree in co-relation 2529. Up to 289 conditions per place. [2022-07-19 21:26:01,234 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 51 selfloop transitions, 21 changer transitions 28/269 dead transitions. [2022-07-19 21:26:01,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 269 transitions, 1527 flow [2022-07-19 21:26:01,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:26:01,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:26:01,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3595 transitions. [2022-07-19 21:26:01,237 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8151927437641724 [2022-07-19 21:26:01,237 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3595 transitions. [2022-07-19 21:26:01,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3595 transitions. [2022-07-19 21:26:01,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:01,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3595 transitions. [2022-07-19 21:26:01,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.1904761904762) internal successors, (3595), 21 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,248 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,248 INFO L186 Difference]: Start difference. First operand has 269 places, 229 transitions, 884 flow. Second operand 21 states and 3595 transitions. [2022-07-19 21:26:01,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 269 transitions, 1527 flow [2022-07-19 21:26:01,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 269 transitions, 1435 flow, removed 40 selfloop flow, removed 11 redundant places. [2022-07-19 21:26:01,264 INFO L242 Difference]: Finished difference. Result has 278 places, 231 transitions, 977 flow [2022-07-19 21:26:01,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=977, PETRI_PLACES=278, PETRI_TRANSITIONS=231} [2022-07-19 21:26:01,265 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 91 predicate places. [2022-07-19 21:26:01,265 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 231 transitions, 977 flow [2022-07-19 21:26:01,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:01,266 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:01,266 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:01,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:26:01,266 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:01,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:01,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1052917516, now seen corresponding path program 15 times [2022-07-19 21:26:01,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:01,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062503272] [2022-07-19 21:26:01,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:01,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:01,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:01,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062503272] [2022-07-19 21:26:01,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062503272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:01,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:01,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:01,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70308417] [2022-07-19 21:26:01,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:01,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:01,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:01,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:01,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:01,368 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:01,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 231 transitions, 977 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:01,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:01,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:01,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:01,706 INFO L129 PetriNetUnfolder]: 135/1085 cut-off events. [2022-07-19 21:26:01,706 INFO L130 PetriNetUnfolder]: For 1994/2008 co-relation queries the response was YES. [2022-07-19 21:26:01,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2659 conditions, 1085 events. 135/1085 cut-off events. For 1994/2008 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8190 event pairs, 85 based on Foata normal form. 1/1031 useless extension candidates. Maximal degree in co-relation 2606. Up to 294 conditions per place. [2022-07-19 21:26:01,717 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 51 selfloop transitions, 22 changer transitions 25/267 dead transitions. [2022-07-19 21:26:01,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 267 transitions, 1576 flow [2022-07-19 21:26:01,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:26:01,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:26:01,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2752 transitions. [2022-07-19 21:26:01,720 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2022-07-19 21:26:01,720 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2752 transitions. [2022-07-19 21:26:01,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2752 transitions. [2022-07-19 21:26:01,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:01,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2752 transitions. [2022-07-19 21:26:01,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 172.0) internal successors, (2752), 16 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,727 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:01,727 INFO L186 Difference]: Start difference. First operand has 278 places, 231 transitions, 977 flow. Second operand 16 states and 2752 transitions. [2022-07-19 21:26:01,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 267 transitions, 1576 flow [2022-07-19 21:26:01,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 267 transitions, 1449 flow, removed 38 selfloop flow, removed 15 redundant places. [2022-07-19 21:26:01,743 INFO L242 Difference]: Finished difference. Result has 274 places, 236 transitions, 1046 flow [2022-07-19 21:26:01,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1046, PETRI_PLACES=274, PETRI_TRANSITIONS=236} [2022-07-19 21:26:01,744 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 87 predicate places. [2022-07-19 21:26:01,744 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 236 transitions, 1046 flow [2022-07-19 21:26:01,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:01,745 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:01,745 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:01,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 21:26:01,745 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:01,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:01,746 INFO L85 PathProgramCache]: Analyzing trace with hash -2048698328, now seen corresponding path program 16 times [2022-07-19 21:26:01,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:01,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591861705] [2022-07-19 21:26:01,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:01,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:01,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:01,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:01,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591861705] [2022-07-19 21:26:01,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591861705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:01,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:01,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:01,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146095341] [2022-07-19 21:26:01,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:01,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:01,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:01,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:01,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:01,841 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:01,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 236 transitions, 1046 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:01,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:01,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:01,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:02,141 INFO L129 PetriNetUnfolder]: 126/1017 cut-off events. [2022-07-19 21:26:02,141 INFO L130 PetriNetUnfolder]: For 1638/1652 co-relation queries the response was YES. [2022-07-19 21:26:02,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2442 conditions, 1017 events. 126/1017 cut-off events. For 1638/1652 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7469 event pairs, 85 based on Foata normal form. 1/963 useless extension candidates. Maximal degree in co-relation 2392. Up to 288 conditions per place. [2022-07-19 21:26:02,153 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 47 selfloop transitions, 10 changer transitions 30/256 dead transitions. [2022-07-19 21:26:02,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 256 transitions, 1403 flow [2022-07-19 21:26:02,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:02,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3082 transitions. [2022-07-19 21:26:02,156 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8153439153439154 [2022-07-19 21:26:02,156 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3082 transitions. [2022-07-19 21:26:02,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3082 transitions. [2022-07-19 21:26:02,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:02,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3082 transitions. [2022-07-19 21:26:02,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.22222222222223) internal successors, (3082), 18 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,164 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,164 INFO L186 Difference]: Start difference. First operand has 274 places, 236 transitions, 1046 flow. Second operand 18 states and 3082 transitions. [2022-07-19 21:26:02,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 256 transitions, 1403 flow [2022-07-19 21:26:02,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 256 transitions, 1309 flow, removed 25 selfloop flow, removed 10 redundant places. [2022-07-19 21:26:02,178 INFO L242 Difference]: Finished difference. Result has 281 places, 221 transitions, 820 flow [2022-07-19 21:26:02,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=820, PETRI_PLACES=281, PETRI_TRANSITIONS=221} [2022-07-19 21:26:02,179 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 94 predicate places. [2022-07-19 21:26:02,179 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 221 transitions, 820 flow [2022-07-19 21:26:02,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:02,180 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:02,180 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:02,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 21:26:02,180 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:02,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:02,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1739090500, now seen corresponding path program 17 times [2022-07-19 21:26:02,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:02,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138742950] [2022-07-19 21:26:02,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:02,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:02,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:02,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138742950] [2022-07-19 21:26:02,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138742950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:02,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:02,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:02,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878018720] [2022-07-19 21:26:02,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:02,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:02,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:02,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:02,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:02,282 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:02,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 221 transitions, 820 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:02,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:02,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:02,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:02,625 INFO L129 PetriNetUnfolder]: 131/1041 cut-off events. [2022-07-19 21:26:02,625 INFO L130 PetriNetUnfolder]: For 1648/1662 co-relation queries the response was YES. [2022-07-19 21:26:02,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2488 conditions, 1041 events. 131/1041 cut-off events. For 1648/1662 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7727 event pairs, 86 based on Foata normal form. 1/986 useless extension candidates. Maximal degree in co-relation 2438. Up to 288 conditions per place. [2022-07-19 21:26:02,635 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 45 selfloop transitions, 20 changer transitions 23/257 dead transitions. [2022-07-19 21:26:02,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 257 transitions, 1398 flow [2022-07-19 21:26:02,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:02,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:02,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3087 transitions. [2022-07-19 21:26:02,638 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-07-19 21:26:02,638 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3087 transitions. [2022-07-19 21:26:02,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3087 transitions. [2022-07-19 21:26:02,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:02,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3087 transitions. [2022-07-19 21:26:02,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.5) internal successors, (3087), 18 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,647 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:02,647 INFO L186 Difference]: Start difference. First operand has 281 places, 221 transitions, 820 flow. Second operand 18 states and 3087 transitions. [2022-07-19 21:26:02,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 257 transitions, 1398 flow [2022-07-19 21:26:02,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 257 transitions, 1271 flow, removed 24 selfloop flow, removed 17 redundant places. [2022-07-19 21:26:02,660 INFO L242 Difference]: Finished difference. Result has 267 places, 230 transitions, 956 flow [2022-07-19 21:26:02,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=956, PETRI_PLACES=267, PETRI_TRANSITIONS=230} [2022-07-19 21:26:02,661 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 80 predicate places. [2022-07-19 21:26:02,661 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 230 transitions, 956 flow [2022-07-19 21:26:02,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:02,662 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:02,662 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:02,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 21:26:02,662 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:02,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:02,663 INFO L85 PathProgramCache]: Analyzing trace with hash 727369106, now seen corresponding path program 18 times [2022-07-19 21:26:02,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:02,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613002900] [2022-07-19 21:26:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:02,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:02,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:02,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613002900] [2022-07-19 21:26:02,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613002900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:02,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:02,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:02,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447281924] [2022-07-19 21:26:02,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:02,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:02,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:02,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:02,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:02,774 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:02,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 230 transitions, 956 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:02,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:02,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:02,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:03,129 INFO L129 PetriNetUnfolder]: 127/1040 cut-off events. [2022-07-19 21:26:03,129 INFO L130 PetriNetUnfolder]: For 1515/1529 co-relation queries the response was YES. [2022-07-19 21:26:03,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2449 conditions, 1040 events. 127/1040 cut-off events. For 1515/1529 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7702 event pairs, 82 based on Foata normal form. 1/987 useless extension candidates. Maximal degree in co-relation 2402. Up to 288 conditions per place. [2022-07-19 21:26:03,136 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 46 selfloop transitions, 22 changer transitions 24/261 dead transitions. [2022-07-19 21:26:03,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 261 transitions, 1471 flow [2022-07-19 21:26:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:26:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:26:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2919 transitions. [2022-07-19 21:26:03,140 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8176470588235294 [2022-07-19 21:26:03,140 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2919 transitions. [2022-07-19 21:26:03,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2919 transitions. [2022-07-19 21:26:03,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:03,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2919 transitions. [2022-07-19 21:26:03,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.7058823529412) internal successors, (2919), 17 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,158 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,159 INFO L186 Difference]: Start difference. First operand has 267 places, 230 transitions, 956 flow. Second operand 17 states and 2919 transitions. [2022-07-19 21:26:03,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 261 transitions, 1471 flow [2022-07-19 21:26:03,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 261 transitions, 1406 flow, removed 28 selfloop flow, removed 5 redundant places. [2022-07-19 21:26:03,173 INFO L242 Difference]: Finished difference. Result has 279 places, 234 transitions, 1060 flow [2022-07-19 21:26:03,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1060, PETRI_PLACES=279, PETRI_TRANSITIONS=234} [2022-07-19 21:26:03,173 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 92 predicate places. [2022-07-19 21:26:03,174 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 234 transitions, 1060 flow [2022-07-19 21:26:03,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:03,174 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:03,174 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:03,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 21:26:03,175 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:03,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:03,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2024116528, now seen corresponding path program 19 times [2022-07-19 21:26:03,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:03,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223238570] [2022-07-19 21:26:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:03,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:03,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:03,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223238570] [2022-07-19 21:26:03,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223238570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:03,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:03,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:03,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976250745] [2022-07-19 21:26:03,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:03,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:03,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:03,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:03,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:03,304 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:03,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 234 transitions, 1060 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:03,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:03,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:03,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:03,602 INFO L129 PetriNetUnfolder]: 121/1019 cut-off events. [2022-07-19 21:26:03,603 INFO L130 PetriNetUnfolder]: For 1482/1496 co-relation queries the response was YES. [2022-07-19 21:26:03,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 1019 events. 121/1019 cut-off events. For 1482/1496 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7533 event pairs, 82 based on Foata normal form. 1/966 useless extension candidates. Maximal degree in co-relation 2341. Up to 288 conditions per place. [2022-07-19 21:26:03,612 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 45 selfloop transitions, 12 changer transitions 29/255 dead transitions. [2022-07-19 21:26:03,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 255 transitions, 1445 flow [2022-07-19 21:26:03,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:26:03,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:26:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2914 transitions. [2022-07-19 21:26:03,616 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8162464985994398 [2022-07-19 21:26:03,616 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2914 transitions. [2022-07-19 21:26:03,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2914 transitions. [2022-07-19 21:26:03,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:03,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2914 transitions. [2022-07-19 21:26:03,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.41176470588235) internal successors, (2914), 17 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,624 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:03,624 INFO L186 Difference]: Start difference. First operand has 279 places, 234 transitions, 1060 flow. Second operand 17 states and 2914 transitions. [2022-07-19 21:26:03,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 255 transitions, 1445 flow [2022-07-19 21:26:03,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 255 transitions, 1352 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-07-19 21:26:03,639 INFO L242 Difference]: Finished difference. Result has 285 places, 225 transitions, 893 flow [2022-07-19 21:26:03,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=893, PETRI_PLACES=285, PETRI_TRANSITIONS=225} [2022-07-19 21:26:03,640 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 98 predicate places. [2022-07-19 21:26:03,640 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 225 transitions, 893 flow [2022-07-19 21:26:03,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:03,641 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:03,641 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:03,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 21:26:03,642 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:03,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:03,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1652952068, now seen corresponding path program 20 times [2022-07-19 21:26:03,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:03,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632984890] [2022-07-19 21:26:03,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:03,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:03,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:03,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632984890] [2022-07-19 21:26:03,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632984890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:03,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:03,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:03,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823134991] [2022-07-19 21:26:03,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:03,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:03,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:03,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:03,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:03,757 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:03,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 225 transitions, 893 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:03,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:03,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:03,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:04,076 INFO L129 PetriNetUnfolder]: 113/913 cut-off events. [2022-07-19 21:26:04,076 INFO L130 PetriNetUnfolder]: For 1155/1169 co-relation queries the response was YES. [2022-07-19 21:26:04,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2056 conditions, 913 events. 113/913 cut-off events. For 1155/1169 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6440 event pairs, 82 based on Foata normal form. 1/860 useless extension candidates. Maximal degree in co-relation 2003. Up to 266 conditions per place. [2022-07-19 21:26:04,084 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 30 selfloop transitions, 0 changer transitions 39/234 dead transitions. [2022-07-19 21:26:04,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 234 transitions, 1097 flow [2022-07-19 21:26:04,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:04,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:04,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3072 transitions. [2022-07-19 21:26:04,088 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8126984126984127 [2022-07-19 21:26:04,088 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3072 transitions. [2022-07-19 21:26:04,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3072 transitions. [2022-07-19 21:26:04,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:04,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3072 transitions. [2022-07-19 21:26:04,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.66666666666666) internal successors, (3072), 18 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,097 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,097 INFO L186 Difference]: Start difference. First operand has 285 places, 225 transitions, 893 flow. Second operand 18 states and 3072 transitions. [2022-07-19 21:26:04,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 234 transitions, 1097 flow [2022-07-19 21:26:04,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 234 transitions, 987 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-07-19 21:26:04,109 INFO L242 Difference]: Finished difference. Result has 266 places, 195 transitions, 521 flow [2022-07-19 21:26:04,110 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=521, PETRI_PLACES=266, PETRI_TRANSITIONS=195} [2022-07-19 21:26:04,111 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 79 predicate places. [2022-07-19 21:26:04,111 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 195 transitions, 521 flow [2022-07-19 21:26:04,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:04,111 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:04,112 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:04,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 21:26:04,113 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:04,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:04,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1536319502, now seen corresponding path program 1 times [2022-07-19 21:26:04,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:04,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505899680] [2022-07-19 21:26:04,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:04,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:04,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:04,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505899680] [2022-07-19 21:26:04,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505899680] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:04,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:04,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:04,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545036520] [2022-07-19 21:26:04,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:04,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:04,203 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:04,204 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 195 transitions, 521 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:04,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:04,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:04,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:04,506 INFO L129 PetriNetUnfolder]: 157/1039 cut-off events. [2022-07-19 21:26:04,506 INFO L130 PetriNetUnfolder]: For 1156/1167 co-relation queries the response was YES. [2022-07-19 21:26:04,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 1039 events. 157/1039 cut-off events. For 1156/1167 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7238 event pairs, 76 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 2201. Up to 230 conditions per place. [2022-07-19 21:26:04,515 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 50 selfloop transitions, 12 changer transitions 36/262 dead transitions. [2022-07-19 21:26:04,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 262 transitions, 1120 flow [2022-07-19 21:26:04,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:04,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:04,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3439 transitions. [2022-07-19 21:26:04,518 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8188095238095238 [2022-07-19 21:26:04,518 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3439 transitions. [2022-07-19 21:26:04,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3439 transitions. [2022-07-19 21:26:04,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:04,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3439 transitions. [2022-07-19 21:26:04,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.95) internal successors, (3439), 20 states have internal predecessors, (3439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,528 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,528 INFO L186 Difference]: Start difference. First operand has 266 places, 195 transitions, 521 flow. Second operand 20 states and 3439 transitions. [2022-07-19 21:26:04,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 262 transitions, 1120 flow [2022-07-19 21:26:04,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 262 transitions, 1012 flow, removed 54 selfloop flow, removed 11 redundant places. [2022-07-19 21:26:04,536 INFO L242 Difference]: Finished difference. Result has 248 places, 206 transitions, 642 flow [2022-07-19 21:26:04,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=642, PETRI_PLACES=248, PETRI_TRANSITIONS=206} [2022-07-19 21:26:04,537 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 61 predicate places. [2022-07-19 21:26:04,537 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 206 transitions, 642 flow [2022-07-19 21:26:04,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:04,538 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:04,538 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:04,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 21:26:04,539 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:04,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:04,540 INFO L85 PathProgramCache]: Analyzing trace with hash -435224234, now seen corresponding path program 2 times [2022-07-19 21:26:04,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:04,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115563748] [2022-07-19 21:26:04,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:04,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:04,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:04,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115563748] [2022-07-19 21:26:04,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115563748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:04,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:04,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:04,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038012359] [2022-07-19 21:26:04,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:04,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:04,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:04,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:04,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:04,631 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:04,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 206 transitions, 642 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:04,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:04,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:04,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:04,892 INFO L129 PetriNetUnfolder]: 138/940 cut-off events. [2022-07-19 21:26:04,893 INFO L130 PetriNetUnfolder]: For 1954/1965 co-relation queries the response was YES. [2022-07-19 21:26:04,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2350 conditions, 940 events. 138/940 cut-off events. For 1954/1965 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6387 event pairs, 40 based on Foata normal form. 1/895 useless extension candidates. Maximal degree in co-relation 2302. Up to 117 conditions per place. [2022-07-19 21:26:04,901 INFO L132 encePairwiseOnDemand]: 195/210 looper letters, 32 selfloop transitions, 5 changer transitions 66/261 dead transitions. [2022-07-19 21:26:04,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 261 transitions, 1199 flow [2022-07-19 21:26:04,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:26:04,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:26:04,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2423 transitions. [2022-07-19 21:26:04,904 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8241496598639456 [2022-07-19 21:26:04,904 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2423 transitions. [2022-07-19 21:26:04,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2423 transitions. [2022-07-19 21:26:04,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:04,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2423 transitions. [2022-07-19 21:26:04,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 173.07142857142858) internal successors, (2423), 14 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 210.0) internal successors, (3150), 15 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,911 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 210.0) internal successors, (3150), 15 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:04,911 INFO L186 Difference]: Start difference. First operand has 248 places, 206 transitions, 642 flow. Second operand 14 states and 2423 transitions. [2022-07-19 21:26:04,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 261 transitions, 1199 flow [2022-07-19 21:26:04,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 261 transitions, 1077 flow, removed 61 selfloop flow, removed 10 redundant places. [2022-07-19 21:26:04,922 INFO L242 Difference]: Finished difference. Result has 249 places, 188 transitions, 529 flow [2022-07-19 21:26:04,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=529, PETRI_PLACES=249, PETRI_TRANSITIONS=188} [2022-07-19 21:26:04,923 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 62 predicate places. [2022-07-19 21:26:04,923 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 188 transitions, 529 flow [2022-07-19 21:26:04,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:04,924 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:04,924 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:04,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 21:26:04,924 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:04,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:04,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1613387736, now seen corresponding path program 1 times [2022-07-19 21:26:04,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:04,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575971968] [2022-07-19 21:26:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:04,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:05,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:05,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575971968] [2022-07-19 21:26:05,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575971968] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:05,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:05,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:05,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785992187] [2022-07-19 21:26:05,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:05,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:05,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:05,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:05,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:05,029 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:05,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 188 transitions, 529 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:05,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:05,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:05,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:05,301 INFO L129 PetriNetUnfolder]: 114/807 cut-off events. [2022-07-19 21:26:05,301 INFO L130 PetriNetUnfolder]: For 1781/1786 co-relation queries the response was YES. [2022-07-19 21:26:05,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1947 conditions, 807 events. 114/807 cut-off events. For 1781/1786 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5090 event pairs, 46 based on Foata normal form. 1/763 useless extension candidates. Maximal degree in co-relation 1898. Up to 145 conditions per place. [2022-07-19 21:26:05,309 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 49 selfloop transitions, 14 changer transitions 25/244 dead transitions. [2022-07-19 21:26:05,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 244 transitions, 1198 flow [2022-07-19 21:26:05,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:26:05,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:26:05,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2755 transitions. [2022-07-19 21:26:05,312 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8199404761904762 [2022-07-19 21:26:05,312 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2755 transitions. [2022-07-19 21:26:05,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2755 transitions. [2022-07-19 21:26:05,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:05,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2755 transitions. [2022-07-19 21:26:05,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 172.1875) internal successors, (2755), 16 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,319 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,319 INFO L186 Difference]: Start difference. First operand has 249 places, 188 transitions, 529 flow. Second operand 16 states and 2755 transitions. [2022-07-19 21:26:05,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 244 transitions, 1198 flow [2022-07-19 21:26:05,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 244 transitions, 937 flow, removed 126 selfloop flow, removed 17 redundant places. [2022-07-19 21:26:05,327 INFO L242 Difference]: Finished difference. Result has 238 places, 201 transitions, 637 flow [2022-07-19 21:26:05,327 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=637, PETRI_PLACES=238, PETRI_TRANSITIONS=201} [2022-07-19 21:26:05,328 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 51 predicate places. [2022-07-19 21:26:05,328 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 201 transitions, 637 flow [2022-07-19 21:26:05,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:05,328 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:05,329 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:05,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 21:26:05,329 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:05,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:05,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1854629310, now seen corresponding path program 2 times [2022-07-19 21:26:05,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:05,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42798437] [2022-07-19 21:26:05,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:05,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:05,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:05,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42798437] [2022-07-19 21:26:05,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42798437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:05,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:05,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:05,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066078681] [2022-07-19 21:26:05,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:05,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:05,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:05,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:05,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:05,437 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:05,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 201 transitions, 637 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:05,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:05,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:05,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:05,815 INFO L129 PetriNetUnfolder]: 114/789 cut-off events. [2022-07-19 21:26:05,816 INFO L130 PetriNetUnfolder]: For 1250/1253 co-relation queries the response was YES. [2022-07-19 21:26:05,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1860 conditions, 789 events. 114/789 cut-off events. For 1250/1253 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4955 event pairs, 35 based on Foata normal form. 1/753 useless extension candidates. Maximal degree in co-relation 1814. Up to 115 conditions per place. [2022-07-19 21:26:05,820 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 76 selfloop transitions, 11 changer transitions 41/284 dead transitions. [2022-07-19 21:26:05,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 284 transitions, 1438 flow [2022-07-19 21:26:05,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:26:05,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:26:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4121 transitions. [2022-07-19 21:26:05,829 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8176587301587301 [2022-07-19 21:26:05,829 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4121 transitions. [2022-07-19 21:26:05,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4121 transitions. [2022-07-19 21:26:05,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:05,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4121 transitions. [2022-07-19 21:26:05,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.70833333333334) internal successors, (4121), 24 states have internal predecessors, (4121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,839 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:05,839 INFO L186 Difference]: Start difference. First operand has 238 places, 201 transitions, 637 flow. Second operand 24 states and 4121 transitions. [2022-07-19 21:26:05,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 284 transitions, 1438 flow [2022-07-19 21:26:05,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 284 transitions, 1280 flow, removed 78 selfloop flow, removed 9 redundant places. [2022-07-19 21:26:05,848 INFO L242 Difference]: Finished difference. Result has 266 places, 205 transitions, 700 flow [2022-07-19 21:26:05,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=700, PETRI_PLACES=266, PETRI_TRANSITIONS=205} [2022-07-19 21:26:05,849 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 79 predicate places. [2022-07-19 21:26:05,849 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 205 transitions, 700 flow [2022-07-19 21:26:05,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:05,850 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:05,850 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:05,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 21:26:05,850 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:05,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:05,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1019128568, now seen corresponding path program 3 times [2022-07-19 21:26:05,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:05,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109347599] [2022-07-19 21:26:05,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:05,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:05,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:05,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109347599] [2022-07-19 21:26:05,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109347599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:05,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:05,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:05,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177435408] [2022-07-19 21:26:05,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:05,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:05,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:05,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:05,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:05,938 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:05,939 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 205 transitions, 700 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:05,939 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:05,939 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:05,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:06,261 INFO L129 PetriNetUnfolder]: 119/809 cut-off events. [2022-07-19 21:26:06,261 INFO L130 PetriNetUnfolder]: For 2499/2502 co-relation queries the response was YES. [2022-07-19 21:26:06,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2221 conditions, 809 events. 119/809 cut-off events. For 2499/2502 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5085 event pairs, 41 based on Foata normal form. 1/769 useless extension candidates. Maximal degree in co-relation 2162. Up to 161 conditions per place. [2022-07-19 21:26:06,269 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 59 selfloop transitions, 20 changer transitions 25/260 dead transitions. [2022-07-19 21:26:06,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 260 transitions, 1481 flow [2022-07-19 21:26:06,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:06,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:06,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3090 transitions. [2022-07-19 21:26:06,272 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8174603174603174 [2022-07-19 21:26:06,272 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3090 transitions. [2022-07-19 21:26:06,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3090 transitions. [2022-07-19 21:26:06,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:06,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3090 transitions. [2022-07-19 21:26:06,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.66666666666666) internal successors, (3090), 18 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,280 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,280 INFO L186 Difference]: Start difference. First operand has 266 places, 205 transitions, 700 flow. Second operand 18 states and 3090 transitions. [2022-07-19 21:26:06,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 260 transitions, 1481 flow [2022-07-19 21:26:06,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 260 transitions, 1281 flow, removed 97 selfloop flow, removed 15 redundant places. [2022-07-19 21:26:06,293 INFO L242 Difference]: Finished difference. Result has 261 places, 219 transitions, 891 flow [2022-07-19 21:26:06,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=891, PETRI_PLACES=261, PETRI_TRANSITIONS=219} [2022-07-19 21:26:06,294 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 74 predicate places. [2022-07-19 21:26:06,294 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 219 transitions, 891 flow [2022-07-19 21:26:06,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:06,295 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:06,295 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:06,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 21:26:06,295 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:06,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:06,296 INFO L85 PathProgramCache]: Analyzing trace with hash -95394206, now seen corresponding path program 4 times [2022-07-19 21:26:06,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:06,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551044379] [2022-07-19 21:26:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:06,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:06,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:06,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551044379] [2022-07-19 21:26:06,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551044379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:06,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:06,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:06,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844493057] [2022-07-19 21:26:06,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:06,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:06,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:06,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:06,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:06,394 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:06,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 219 transitions, 891 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:06,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:06,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:06,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:06,748 INFO L129 PetriNetUnfolder]: 144/879 cut-off events. [2022-07-19 21:26:06,749 INFO L130 PetriNetUnfolder]: For 2378/2384 co-relation queries the response was YES. [2022-07-19 21:26:06,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2526 conditions, 879 events. 144/879 cut-off events. For 2378/2384 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5688 event pairs, 51 based on Foata normal form. 1/836 useless extension candidates. Maximal degree in co-relation 2470. Up to 154 conditions per place. [2022-07-19 21:26:06,753 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 74 selfloop transitions, 20 changer transitions 33/283 dead transitions. [2022-07-19 21:26:06,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 283 transitions, 1771 flow [2022-07-19 21:26:06,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:06,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:06,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3435 transitions. [2022-07-19 21:26:06,758 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8178571428571428 [2022-07-19 21:26:06,758 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3435 transitions. [2022-07-19 21:26:06,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3435 transitions. [2022-07-19 21:26:06,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:06,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3435 transitions. [2022-07-19 21:26:06,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.75) internal successors, (3435), 20 states have internal predecessors, (3435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,766 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:06,766 INFO L186 Difference]: Start difference. First operand has 261 places, 219 transitions, 891 flow. Second operand 20 states and 3435 transitions. [2022-07-19 21:26:06,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 283 transitions, 1771 flow [2022-07-19 21:26:06,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 283 transitions, 1551 flow, removed 106 selfloop flow, removed 11 redundant places. [2022-07-19 21:26:06,780 INFO L242 Difference]: Finished difference. Result has 277 places, 230 transitions, 1012 flow [2022-07-19 21:26:06,780 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1012, PETRI_PLACES=277, PETRI_TRANSITIONS=230} [2022-07-19 21:26:06,781 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 90 predicate places. [2022-07-19 21:26:06,781 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 230 transitions, 1012 flow [2022-07-19 21:26:06,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:06,782 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:06,782 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:06,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 21:26:06,782 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:06,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:06,783 INFO L85 PathProgramCache]: Analyzing trace with hash -875030552, now seen corresponding path program 5 times [2022-07-19 21:26:06,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:06,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530163211] [2022-07-19 21:26:06,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:06,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:06,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:06,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530163211] [2022-07-19 21:26:06,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530163211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:06,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:06,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:06,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398253183] [2022-07-19 21:26:06,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:06,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:06,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:06,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:06,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:06,879 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:06,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 230 transitions, 1012 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:06,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:06,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:06,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:07,208 INFO L129 PetriNetUnfolder]: 140/880 cut-off events. [2022-07-19 21:26:07,208 INFO L130 PetriNetUnfolder]: For 2658/2670 co-relation queries the response was YES. [2022-07-19 21:26:07,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2591 conditions, 880 events. 140/880 cut-off events. For 2658/2670 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5785 event pairs, 42 based on Foata normal form. 1/839 useless extension candidates. Maximal degree in co-relation 2528. Up to 116 conditions per place. [2022-07-19 21:26:07,217 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 96 selfloop transitions, 25 changer transitions 42/319 dead transitions. [2022-07-19 21:26:07,217 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 319 transitions, 2236 flow [2022-07-19 21:26:07,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:26:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:26:07,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4119 transitions. [2022-07-19 21:26:07,221 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8172619047619047 [2022-07-19 21:26:07,221 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4119 transitions. [2022-07-19 21:26:07,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4119 transitions. [2022-07-19 21:26:07,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:07,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4119 transitions. [2022-07-19 21:26:07,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.625) internal successors, (4119), 24 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,231 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,231 INFO L186 Difference]: Start difference. First operand has 277 places, 230 transitions, 1012 flow. Second operand 24 states and 4119 transitions. [2022-07-19 21:26:07,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 319 transitions, 2236 flow [2022-07-19 21:26:07,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 319 transitions, 2050 flow, removed 86 selfloop flow, removed 12 redundant places. [2022-07-19 21:26:07,249 INFO L242 Difference]: Finished difference. Result has 295 places, 232 transitions, 1102 flow [2022-07-19 21:26:07,249 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1102, PETRI_PLACES=295, PETRI_TRANSITIONS=232} [2022-07-19 21:26:07,249 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-07-19 21:26:07,249 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 232 transitions, 1102 flow [2022-07-19 21:26:07,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:07,250 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:07,250 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:07,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 21:26:07,250 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:07,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:07,251 INFO L85 PathProgramCache]: Analyzing trace with hash 307829718, now seen corresponding path program 6 times [2022-07-19 21:26:07,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:07,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140754394] [2022-07-19 21:26:07,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:07,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:07,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:07,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140754394] [2022-07-19 21:26:07,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140754394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:07,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:07,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:07,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296369184] [2022-07-19 21:26:07,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:07,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:07,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:07,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:07,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:07,348 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:07,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 232 transitions, 1102 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:07,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:07,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:07,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:07,712 INFO L129 PetriNetUnfolder]: 139/945 cut-off events. [2022-07-19 21:26:07,713 INFO L130 PetriNetUnfolder]: For 2926/2935 co-relation queries the response was YES. [2022-07-19 21:26:07,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2754 conditions, 945 events. 139/945 cut-off events. For 2926/2935 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6551 event pairs, 45 based on Foata normal form. 5/908 useless extension candidates. Maximal degree in co-relation 2683. Up to 177 conditions per place. [2022-07-19 21:26:07,721 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 70 selfloop transitions, 23 changer transitions 33/282 dead transitions. [2022-07-19 21:26:07,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 282 transitions, 1873 flow [2022-07-19 21:26:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:26:07,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:26:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3766 transitions. [2022-07-19 21:26:07,724 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8151515151515152 [2022-07-19 21:26:07,725 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3766 transitions. [2022-07-19 21:26:07,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3766 transitions. [2022-07-19 21:26:07,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:07,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3766 transitions. [2022-07-19 21:26:07,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.1818181818182) internal successors, (3766), 22 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,733 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:07,733 INFO L186 Difference]: Start difference. First operand has 295 places, 232 transitions, 1102 flow. Second operand 22 states and 3766 transitions. [2022-07-19 21:26:07,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 282 transitions, 1873 flow [2022-07-19 21:26:07,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 282 transitions, 1782 flow, removed 24 selfloop flow, removed 17 redundant places. [2022-07-19 21:26:07,749 INFO L242 Difference]: Finished difference. Result has 297 places, 236 transitions, 1196 flow [2022-07-19 21:26:07,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1196, PETRI_PLACES=297, PETRI_TRANSITIONS=236} [2022-07-19 21:26:07,750 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 110 predicate places. [2022-07-19 21:26:07,750 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 236 transitions, 1196 flow [2022-07-19 21:26:07,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:07,750 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:07,750 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:07,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 21:26:07,751 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:07,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:07,751 INFO L85 PathProgramCache]: Analyzing trace with hash 3506552, now seen corresponding path program 7 times [2022-07-19 21:26:07,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:07,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563762543] [2022-07-19 21:26:07,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:07,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:07,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:07,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563762543] [2022-07-19 21:26:07,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563762543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:07,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:07,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:07,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092679129] [2022-07-19 21:26:07,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:07,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:07,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:07,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:07,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:07,854 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:07,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 236 transitions, 1196 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:07,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:07,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:07,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:08,211 INFO L129 PetriNetUnfolder]: 135/942 cut-off events. [2022-07-19 21:26:08,211 INFO L130 PetriNetUnfolder]: For 3558/3572 co-relation queries the response was YES. [2022-07-19 21:26:08,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2835 conditions, 942 events. 135/942 cut-off events. For 3558/3572 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6579 event pairs, 42 based on Foata normal form. 2/905 useless extension candidates. Maximal degree in co-relation 2764. Up to 169 conditions per place. [2022-07-19 21:26:08,219 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 84 selfloop transitions, 23 changer transitions 33/296 dead transitions. [2022-07-19 21:26:08,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 296 transitions, 2272 flow [2022-07-19 21:26:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:26:08,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:26:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3604 transitions. [2022-07-19 21:26:08,230 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8172335600907029 [2022-07-19 21:26:08,230 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3604 transitions. [2022-07-19 21:26:08,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3604 transitions. [2022-07-19 21:26:08,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:08,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3604 transitions. [2022-07-19 21:26:08,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.61904761904762) internal successors, (3604), 21 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,238 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,238 INFO L186 Difference]: Start difference. First operand has 297 places, 236 transitions, 1196 flow. Second operand 21 states and 3604 transitions. [2022-07-19 21:26:08,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 296 transitions, 2272 flow [2022-07-19 21:26:08,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 296 transitions, 2082 flow, removed 79 selfloop flow, removed 14 redundant places. [2022-07-19 21:26:08,257 INFO L242 Difference]: Finished difference. Result has 305 places, 246 transitions, 1401 flow [2022-07-19 21:26:08,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1401, PETRI_PLACES=305, PETRI_TRANSITIONS=246} [2022-07-19 21:26:08,258 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 118 predicate places. [2022-07-19 21:26:08,258 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 246 transitions, 1401 flow [2022-07-19 21:26:08,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:08,258 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:08,258 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:08,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-19 21:26:08,259 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:08,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:08,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1512253328, now seen corresponding path program 8 times [2022-07-19 21:26:08,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:08,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480965684] [2022-07-19 21:26:08,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:08,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:08,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:08,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480965684] [2022-07-19 21:26:08,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480965684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:08,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:08,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:08,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141186692] [2022-07-19 21:26:08,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:08,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:08,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:08,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:08,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:08,366 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:08,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 246 transitions, 1401 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:08,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:08,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:08,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:08,650 INFO L129 PetriNetUnfolder]: 117/814 cut-off events. [2022-07-19 21:26:08,650 INFO L130 PetriNetUnfolder]: For 3007/3035 co-relation queries the response was YES. [2022-07-19 21:26:08,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 814 events. 117/814 cut-off events. For 3007/3035 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5282 event pairs, 39 based on Foata normal form. 11/784 useless extension candidates. Maximal degree in co-relation 2377. Up to 169 conditions per place. [2022-07-19 21:26:08,655 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 66 selfloop transitions, 15 changer transitions 30/267 dead transitions. [2022-07-19 21:26:08,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 267 transitions, 1817 flow [2022-07-19 21:26:08,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:26:08,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:26:08,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2744 transitions. [2022-07-19 21:26:08,658 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-07-19 21:26:08,659 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2744 transitions. [2022-07-19 21:26:08,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2744 transitions. [2022-07-19 21:26:08,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:08,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2744 transitions. [2022-07-19 21:26:08,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.5) internal successors, (2744), 16 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,664 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:08,665 INFO L186 Difference]: Start difference. First operand has 305 places, 246 transitions, 1401 flow. Second operand 16 states and 2744 transitions. [2022-07-19 21:26:08,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 267 transitions, 1817 flow [2022-07-19 21:26:08,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 267 transitions, 1710 flow, removed 50 selfloop flow, removed 11 redundant places. [2022-07-19 21:26:08,683 INFO L242 Difference]: Finished difference. Result has 301 places, 230 transitions, 1133 flow [2022-07-19 21:26:08,684 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1133, PETRI_PLACES=301, PETRI_TRANSITIONS=230} [2022-07-19 21:26:08,684 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 114 predicate places. [2022-07-19 21:26:08,684 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 230 transitions, 1133 flow [2022-07-19 21:26:08,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:08,685 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:08,685 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:08,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-19 21:26:08,685 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:08,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:08,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1924249166, now seen corresponding path program 9 times [2022-07-19 21:26:08,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:08,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254551766] [2022-07-19 21:26:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:08,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:08,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:08,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254551766] [2022-07-19 21:26:08,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254551766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:08,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:08,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:08,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125283960] [2022-07-19 21:26:08,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:08,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:08,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:08,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:08,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:08,780 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:08,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 230 transitions, 1133 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:08,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:08,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:08,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:09,102 INFO L129 PetriNetUnfolder]: 115/854 cut-off events. [2022-07-19 21:26:09,102 INFO L130 PetriNetUnfolder]: For 2534/2542 co-relation queries the response was YES. [2022-07-19 21:26:09,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 854 events. 115/854 cut-off events. For 2534/2542 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5731 event pairs, 42 based on Foata normal form. 1/813 useless extension candidates. Maximal degree in co-relation 2383. Up to 170 conditions per place. [2022-07-19 21:26:09,110 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 72 selfloop transitions, 19 changer transitions 33/280 dead transitions. [2022-07-19 21:26:09,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 280 transitions, 2012 flow [2022-07-19 21:26:09,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:26:09,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:26:09,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3430 transitions. [2022-07-19 21:26:09,114 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-07-19 21:26:09,114 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3430 transitions. [2022-07-19 21:26:09,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3430 transitions. [2022-07-19 21:26:09,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:09,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3430 transitions. [2022-07-19 21:26:09,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.5) internal successors, (3430), 20 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,121 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,121 INFO L186 Difference]: Start difference. First operand has 301 places, 230 transitions, 1133 flow. Second operand 20 states and 3430 transitions. [2022-07-19 21:26:09,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 280 transitions, 2012 flow [2022-07-19 21:26:09,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 280 transitions, 1863 flow, removed 25 selfloop flow, removed 13 redundant places. [2022-07-19 21:26:09,138 INFO L242 Difference]: Finished difference. Result has 301 places, 237 transitions, 1250 flow [2022-07-19 21:26:09,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1250, PETRI_PLACES=301, PETRI_TRANSITIONS=237} [2022-07-19 21:26:09,139 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 114 predicate places. [2022-07-19 21:26:09,139 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 237 transitions, 1250 flow [2022-07-19 21:26:09,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:09,139 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:09,139 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:09,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-19 21:26:09,140 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:09,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:09,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1309424042, now seen corresponding path program 10 times [2022-07-19 21:26:09,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:09,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009855260] [2022-07-19 21:26:09,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:09,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:09,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:09,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009855260] [2022-07-19 21:26:09,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009855260] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:09,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:09,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:09,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788227851] [2022-07-19 21:26:09,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:09,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:09,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:09,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:09,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:09,239 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:09,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 237 transitions, 1250 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:09,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:09,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:09,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:09,576 INFO L129 PetriNetUnfolder]: 117/851 cut-off events. [2022-07-19 21:26:09,577 INFO L130 PetriNetUnfolder]: For 2945/2953 co-relation queries the response was YES. [2022-07-19 21:26:09,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2545 conditions, 851 events. 117/851 cut-off events. For 2945/2953 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5654 event pairs, 42 based on Foata normal form. 1/810 useless extension candidates. Maximal degree in co-relation 2469. Up to 168 conditions per place. [2022-07-19 21:26:09,583 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 71 selfloop transitions, 24 changer transitions 27/278 dead transitions. [2022-07-19 21:26:09,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 278 transitions, 2046 flow [2022-07-19 21:26:09,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:26:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:26:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2922 transitions. [2022-07-19 21:26:09,594 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8184873949579832 [2022-07-19 21:26:09,595 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2922 transitions. [2022-07-19 21:26:09,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2922 transitions. [2022-07-19 21:26:09,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:09,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2922 transitions. [2022-07-19 21:26:09,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.88235294117646) internal successors, (2922), 17 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,602 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:09,602 INFO L186 Difference]: Start difference. First operand has 301 places, 237 transitions, 1250 flow. Second operand 17 states and 2922 transitions. [2022-07-19 21:26:09,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 278 transitions, 2046 flow [2022-07-19 21:26:09,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 278 transitions, 1889 flow, removed 56 selfloop flow, removed 13 redundant places. [2022-07-19 21:26:09,622 INFO L242 Difference]: Finished difference. Result has 302 places, 245 transitions, 1392 flow [2022-07-19 21:26:09,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1392, PETRI_PLACES=302, PETRI_TRANSITIONS=245} [2022-07-19 21:26:09,622 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 115 predicate places. [2022-07-19 21:26:09,623 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 245 transitions, 1392 flow [2022-07-19 21:26:09,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:09,623 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:09,623 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:09,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-19 21:26:09,624 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:09,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:09,624 INFO L85 PathProgramCache]: Analyzing trace with hash -326465042, now seen corresponding path program 11 times [2022-07-19 21:26:09,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:09,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796772600] [2022-07-19 21:26:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:09,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:09,723 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 21:26:09,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:09,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796772600] [2022-07-19 21:26:09,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796772600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:09,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:09,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:09,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070885514] [2022-07-19 21:26:09,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:09,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:09,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:09,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:09,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:09,728 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:09,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 245 transitions, 1392 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:09,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:09,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:09,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:10,043 INFO L129 PetriNetUnfolder]: 120/880 cut-off events. [2022-07-19 21:26:10,043 INFO L130 PetriNetUnfolder]: For 2857/2875 co-relation queries the response was YES. [2022-07-19 21:26:10,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2598 conditions, 880 events. 120/880 cut-off events. For 2857/2875 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5952 event pairs, 42 based on Foata normal form. 3/841 useless extension candidates. Maximal degree in co-relation 2523. Up to 172 conditions per place. [2022-07-19 21:26:10,051 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 74 selfloop transitions, 27 changer transitions 29/286 dead transitions. [2022-07-19 21:26:10,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 286 transitions, 2144 flow [2022-07-19 21:26:10,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:26:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:26:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2924 transitions. [2022-07-19 21:26:10,059 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2022-07-19 21:26:10,059 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2924 transitions. [2022-07-19 21:26:10,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2924 transitions. [2022-07-19 21:26:10,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:10,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2924 transitions. [2022-07-19 21:26:10,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 172.0) internal successors, (2924), 17 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,065 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,065 INFO L186 Difference]: Start difference. First operand has 302 places, 245 transitions, 1392 flow. Second operand 17 states and 2924 transitions. [2022-07-19 21:26:10,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 286 transitions, 2144 flow [2022-07-19 21:26:10,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 286 transitions, 2055 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-07-19 21:26:10,085 INFO L242 Difference]: Finished difference. Result has 311 places, 252 transitions, 1533 flow [2022-07-19 21:26:10,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1533, PETRI_PLACES=311, PETRI_TRANSITIONS=252} [2022-07-19 21:26:10,086 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 124 predicate places. [2022-07-19 21:26:10,086 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 252 transitions, 1533 flow [2022-07-19 21:26:10,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:10,087 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:10,087 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:10,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-19 21:26:10,087 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:10,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:10,088 INFO L85 PathProgramCache]: Analyzing trace with hash -315781316, now seen corresponding path program 12 times [2022-07-19 21:26:10,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:10,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529990280] [2022-07-19 21:26:10,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:10,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:10,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:10,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529990280] [2022-07-19 21:26:10,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529990280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:10,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:10,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:10,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831590877] [2022-07-19 21:26:10,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:10,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:10,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:10,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:10,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:10,181 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:10,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 252 transitions, 1533 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:10,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:10,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:10,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:10,468 INFO L129 PetriNetUnfolder]: 108/845 cut-off events. [2022-07-19 21:26:10,469 INFO L130 PetriNetUnfolder]: For 2688/2706 co-relation queries the response was YES. [2022-07-19 21:26:10,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 845 events. 108/845 cut-off events. For 2688/2706 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5644 event pairs, 41 based on Foata normal form. 3/806 useless extension candidates. Maximal degree in co-relation 2353. Up to 165 conditions per place. [2022-07-19 21:26:10,478 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 70 selfloop transitions, 16 changer transitions 34/276 dead transitions. [2022-07-19 21:26:10,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 276 transitions, 1995 flow [2022-07-19 21:26:10,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3087 transitions. [2022-07-19 21:26:10,481 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-07-19 21:26:10,481 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3087 transitions. [2022-07-19 21:26:10,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3087 transitions. [2022-07-19 21:26:10,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:10,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3087 transitions. [2022-07-19 21:26:10,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.5) internal successors, (3087), 18 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,486 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,487 INFO L186 Difference]: Start difference. First operand has 311 places, 252 transitions, 1533 flow. Second operand 18 states and 3087 transitions. [2022-07-19 21:26:10,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 276 transitions, 1995 flow [2022-07-19 21:26:10,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 276 transitions, 1899 flow, removed 25 selfloop flow, removed 9 redundant places. [2022-07-19 21:26:10,508 INFO L242 Difference]: Finished difference. Result has 316 places, 238 transitions, 1273 flow [2022-07-19 21:26:10,508 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1273, PETRI_PLACES=316, PETRI_TRANSITIONS=238} [2022-07-19 21:26:10,509 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 129 predicate places. [2022-07-19 21:26:10,509 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 238 transitions, 1273 flow [2022-07-19 21:26:10,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:10,509 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:10,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:10,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-19 21:26:10,510 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:10,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:10,510 INFO L85 PathProgramCache]: Analyzing trace with hash -193117120, now seen corresponding path program 13 times [2022-07-19 21:26:10,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:10,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038285435] [2022-07-19 21:26:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:10,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:10,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:10,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038285435] [2022-07-19 21:26:10,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038285435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:10,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:10,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:10,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294027356] [2022-07-19 21:26:10,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:10,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:10,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:10,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:10,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:10,620 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:10,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 238 transitions, 1273 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:10,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:10,634 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:10,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:10,898 INFO L129 PetriNetUnfolder]: 94/751 cut-off events. [2022-07-19 21:26:10,899 INFO L130 PetriNetUnfolder]: For 2055/2063 co-relation queries the response was YES. [2022-07-19 21:26:10,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 751 events. 94/751 cut-off events. For 2055/2063 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4701 event pairs, 38 based on Foata normal form. 1/711 useless extension candidates. Maximal degree in co-relation 1960. Up to 152 conditions per place. [2022-07-19 21:26:10,907 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 60 selfloop transitions, 5 changer transitions 33/254 dead transitions. [2022-07-19 21:26:10,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 254 transitions, 1590 flow [2022-07-19 21:26:10,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:10,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:10,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3076 transitions. [2022-07-19 21:26:10,910 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8137566137566138 [2022-07-19 21:26:10,910 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3076 transitions. [2022-07-19 21:26:10,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3076 transitions. [2022-07-19 21:26:10,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:10,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3076 transitions. [2022-07-19 21:26:10,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.88888888888889) internal successors, (3076), 18 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,916 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:10,916 INFO L186 Difference]: Start difference. First operand has 316 places, 238 transitions, 1273 flow. Second operand 18 states and 3076 transitions. [2022-07-19 21:26:10,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 254 transitions, 1590 flow [2022-07-19 21:26:10,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 254 transitions, 1477 flow, removed 22 selfloop flow, removed 19 redundant places. [2022-07-19 21:26:10,933 INFO L242 Difference]: Finished difference. Result has 302 places, 218 transitions, 925 flow [2022-07-19 21:26:10,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=925, PETRI_PLACES=302, PETRI_TRANSITIONS=218} [2022-07-19 21:26:10,934 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 115 predicate places. [2022-07-19 21:26:10,934 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 218 transitions, 925 flow [2022-07-19 21:26:10,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:10,934 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:10,935 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:10,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-19 21:26:10,935 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:10,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:10,936 INFO L85 PathProgramCache]: Analyzing trace with hash -973000416, now seen corresponding path program 14 times [2022-07-19 21:26:10,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:10,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535457079] [2022-07-19 21:26:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:10,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:11,027 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 21:26:11,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:11,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535457079] [2022-07-19 21:26:11,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535457079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:11,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:11,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:11,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481304347] [2022-07-19 21:26:11,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:11,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:11,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:11,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:11,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:11,031 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:11,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 218 transitions, 925 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:11,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:11,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:11,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:11,349 INFO L129 PetriNetUnfolder]: 96/780 cut-off events. [2022-07-19 21:26:11,349 INFO L130 PetriNetUnfolder]: For 1560/1565 co-relation queries the response was YES. [2022-07-19 21:26:11,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2020 conditions, 780 events. 96/780 cut-off events. For 1560/1565 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5022 event pairs, 36 based on Foata normal form. 1/741 useless extension candidates. Maximal degree in co-relation 1950. Up to 129 conditions per place. [2022-07-19 21:26:11,355 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 54 selfloop transitions, 23 changer transitions 34/267 dead transitions. [2022-07-19 21:26:11,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 267 transitions, 1668 flow [2022-07-19 21:26:11,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:26:11,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:26:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3764 transitions. [2022-07-19 21:26:11,357 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8147186147186147 [2022-07-19 21:26:11,358 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3764 transitions. [2022-07-19 21:26:11,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3764 transitions. [2022-07-19 21:26:11,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:11,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3764 transitions. [2022-07-19 21:26:11,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.0909090909091) internal successors, (3764), 22 states have internal predecessors, (3764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:11,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:11,364 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:11,365 INFO L186 Difference]: Start difference. First operand has 302 places, 218 transitions, 925 flow. Second operand 22 states and 3764 transitions. [2022-07-19 21:26:11,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 267 transitions, 1668 flow [2022-07-19 21:26:11,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 267 transitions, 1523 flow, removed 28 selfloop flow, removed 20 redundant places. [2022-07-19 21:26:11,377 INFO L242 Difference]: Finished difference. Result has 289 places, 223 transitions, 1001 flow [2022-07-19 21:26:11,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1001, PETRI_PLACES=289, PETRI_TRANSITIONS=223} [2022-07-19 21:26:11,378 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 102 predicate places. [2022-07-19 21:26:11,378 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 223 transitions, 1001 flow [2022-07-19 21:26:11,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:11,379 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:11,379 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:11,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-19 21:26:11,379 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:11,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1643620878, now seen corresponding path program 15 times [2022-07-19 21:26:11,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:11,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255845690] [2022-07-19 21:26:11,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:11,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:11,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:11,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255845690] [2022-07-19 21:26:11,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255845690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:11,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:11,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:11,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383356236] [2022-07-19 21:26:11,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:11,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:11,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:11,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:11,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:11,481 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:11,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 223 transitions, 1001 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:11,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:11,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:11,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:11,743 INFO L129 PetriNetUnfolder]: 97/815 cut-off events. [2022-07-19 21:26:11,743 INFO L130 PetriNetUnfolder]: For 1909/1914 co-relation queries the response was YES. [2022-07-19 21:26:11,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2134 conditions, 815 events. 97/815 cut-off events. For 1909/1914 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5384 event pairs, 34 based on Foata normal form. 3/782 useless extension candidates. Maximal degree in co-relation 2066. Up to 134 conditions per place. [2022-07-19 21:26:11,748 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 55 selfloop transitions, 27 changer transitions 27/265 dead transitions. [2022-07-19 21:26:11,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 265 transitions, 1687 flow [2022-07-19 21:26:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:26:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:26:11,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2919 transitions. [2022-07-19 21:26:11,750 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8176470588235294 [2022-07-19 21:26:11,750 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2919 transitions. [2022-07-19 21:26:11,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2919 transitions. [2022-07-19 21:26:11,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:11,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2919 transitions. [2022-07-19 21:26:11,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.7058823529412) internal successors, (2919), 17 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:11,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:11,756 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:11,756 INFO L186 Difference]: Start difference. First operand has 289 places, 223 transitions, 1001 flow. Second operand 17 states and 2919 transitions. [2022-07-19 21:26:11,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 265 transitions, 1687 flow [2022-07-19 21:26:11,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 265 transitions, 1601 flow, removed 30 selfloop flow, removed 13 redundant places. [2022-07-19 21:26:11,768 INFO L242 Difference]: Finished difference. Result has 288 places, 231 transitions, 1167 flow [2022-07-19 21:26:11,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1167, PETRI_PLACES=288, PETRI_TRANSITIONS=231} [2022-07-19 21:26:11,769 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 101 predicate places. [2022-07-19 21:26:11,769 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 231 transitions, 1167 flow [2022-07-19 21:26:11,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:11,770 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:11,770 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:11,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-19 21:26:11,770 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:11,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:11,771 INFO L85 PathProgramCache]: Analyzing trace with hash 29335104, now seen corresponding path program 16 times [2022-07-19 21:26:11,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:11,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276536870] [2022-07-19 21:26:11,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:11,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:11,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:11,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276536870] [2022-07-19 21:26:11,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276536870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:11,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:11,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:11,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658806346] [2022-07-19 21:26:11,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:11,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:11,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:11,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:11,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:11,870 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:11,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 231 transitions, 1167 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:11,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:11,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:11,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:12,150 INFO L129 PetriNetUnfolder]: 87/761 cut-off events. [2022-07-19 21:26:12,150 INFO L130 PetriNetUnfolder]: For 1622/1627 co-relation queries the response was YES. [2022-07-19 21:26:12,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1965 conditions, 761 events. 87/761 cut-off events. For 1622/1627 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4808 event pairs, 36 based on Foata normal form. 1/725 useless extension candidates. Maximal degree in co-relation 1898. Up to 130 conditions per place. [2022-07-19 21:26:12,156 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 52 selfloop transitions, 14 changer transitions 33/255 dead transitions. [2022-07-19 21:26:12,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 255 transitions, 1573 flow [2022-07-19 21:26:12,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3082 transitions. [2022-07-19 21:26:12,160 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8153439153439154 [2022-07-19 21:26:12,160 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3082 transitions. [2022-07-19 21:26:12,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3082 transitions. [2022-07-19 21:26:12,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:12,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3082 transitions. [2022-07-19 21:26:12,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.22222222222223) internal successors, (3082), 18 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,166 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,166 INFO L186 Difference]: Start difference. First operand has 288 places, 231 transitions, 1167 flow. Second operand 18 states and 3082 transitions. [2022-07-19 21:26:12,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 255 transitions, 1573 flow [2022-07-19 21:26:12,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 255 transitions, 1475 flow, removed 27 selfloop flow, removed 9 redundant places. [2022-07-19 21:26:12,180 INFO L242 Difference]: Finished difference. Result has 295 places, 216 transitions, 919 flow [2022-07-19 21:26:12,181 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=919, PETRI_PLACES=295, PETRI_TRANSITIONS=216} [2022-07-19 21:26:12,181 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-07-19 21:26:12,181 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 216 transitions, 919 flow [2022-07-19 21:26:12,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:12,182 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:12,182 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:12,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-19 21:26:12,182 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:12,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:12,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1411194016, now seen corresponding path program 17 times [2022-07-19 21:26:12,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:12,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136771600] [2022-07-19 21:26:12,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:12,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:12,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:12,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136771600] [2022-07-19 21:26:12,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136771600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:12,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:12,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:12,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903836943] [2022-07-19 21:26:12,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:12,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:12,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:12,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:12,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:12,276 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:12,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 216 transitions, 919 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:12,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:12,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:12,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:12,562 INFO L129 PetriNetUnfolder]: 87/740 cut-off events. [2022-07-19 21:26:12,562 INFO L130 PetriNetUnfolder]: For 1726/1729 co-relation queries the response was YES. [2022-07-19 21:26:12,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 740 events. 87/740 cut-off events. For 1726/1729 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4641 event pairs, 35 based on Foata normal form. 1/703 useless extension candidates. Maximal degree in co-relation 1843. Up to 121 conditions per place. [2022-07-19 21:26:12,567 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 48 selfloop transitions, 20 changer transitions 34/258 dead transitions. [2022-07-19 21:26:12,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 258 transitions, 1639 flow [2022-07-19 21:26:12,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:26:12,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:26:12,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3593 transitions. [2022-07-19 21:26:12,569 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8147392290249433 [2022-07-19 21:26:12,569 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3593 transitions. [2022-07-19 21:26:12,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3593 transitions. [2022-07-19 21:26:12,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:12,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3593 transitions. [2022-07-19 21:26:12,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.0952380952381) internal successors, (3593), 21 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,574 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,575 INFO L186 Difference]: Start difference. First operand has 295 places, 216 transitions, 919 flow. Second operand 21 states and 3593 transitions. [2022-07-19 21:26:12,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 258 transitions, 1639 flow [2022-07-19 21:26:12,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 258 transitions, 1468 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-07-19 21:26:12,586 INFO L242 Difference]: Finished difference. Result has 287 places, 219 transitions, 979 flow [2022-07-19 21:26:12,586 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=979, PETRI_PLACES=287, PETRI_TRANSITIONS=219} [2022-07-19 21:26:12,587 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2022-07-19 21:26:12,587 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 219 transitions, 979 flow [2022-07-19 21:26:12,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:12,587 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:12,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:12,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-19 21:26:12,588 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:12,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:12,588 INFO L85 PathProgramCache]: Analyzing trace with hash -256073726, now seen corresponding path program 18 times [2022-07-19 21:26:12,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:12,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852307667] [2022-07-19 21:26:12,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:12,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:12,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:12,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852307667] [2022-07-19 21:26:12,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852307667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:12,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:12,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:12,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842037152] [2022-07-19 21:26:12,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:12,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:12,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:12,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:12,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:12,677 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:12,678 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 219 transitions, 979 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:12,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:12,678 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:12,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:12,938 INFO L129 PetriNetUnfolder]: 81/721 cut-off events. [2022-07-19 21:26:12,938 INFO L130 PetriNetUnfolder]: For 1441/1444 co-relation queries the response was YES. [2022-07-19 21:26:12,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1795 conditions, 721 events. 81/721 cut-off events. For 1441/1444 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4471 event pairs, 34 based on Foata normal form. 1/685 useless extension candidates. Maximal degree in co-relation 1727. Up to 126 conditions per place. [2022-07-19 21:26:12,944 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 45 selfloop transitions, 12 changer transitions 32/245 dead transitions. [2022-07-19 21:26:12,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 245 transitions, 1382 flow [2022-07-19 21:26:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3083 transitions. [2022-07-19 21:26:12,949 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8156084656084656 [2022-07-19 21:26:12,949 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3083 transitions. [2022-07-19 21:26:12,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3083 transitions. [2022-07-19 21:26:12,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:12,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3083 transitions. [2022-07-19 21:26:12,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.27777777777777) internal successors, (3083), 18 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,955 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:12,955 INFO L186 Difference]: Start difference. First operand has 287 places, 219 transitions, 979 flow. Second operand 18 states and 3083 transitions. [2022-07-19 21:26:12,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 245 transitions, 1382 flow [2022-07-19 21:26:12,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 245 transitions, 1289 flow, removed 32 selfloop flow, removed 14 redundant places. [2022-07-19 21:26:12,966 INFO L242 Difference]: Finished difference. Result has 285 places, 211 transitions, 846 flow [2022-07-19 21:26:12,966 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=846, PETRI_PLACES=285, PETRI_TRANSITIONS=211} [2022-07-19 21:26:12,966 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 98 predicate places. [2022-07-19 21:26:12,967 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 211 transitions, 846 flow [2022-07-19 21:26:12,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:12,967 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:12,967 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:12,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-19 21:26:12,968 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:12,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:12,968 INFO L85 PathProgramCache]: Analyzing trace with hash 461687660, now seen corresponding path program 19 times [2022-07-19 21:26:12,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:12,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206069539] [2022-07-19 21:26:12,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:12,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:13,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:13,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206069539] [2022-07-19 21:26:13,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206069539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:13,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:13,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:13,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452888645] [2022-07-19 21:26:13,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:13,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:13,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:13,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:13,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:13,063 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:13,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 211 transitions, 846 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:13,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:13,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:13,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:13,329 INFO L129 PetriNetUnfolder]: 76/703 cut-off events. [2022-07-19 21:26:13,330 INFO L130 PetriNetUnfolder]: For 1204/1207 co-relation queries the response was YES. [2022-07-19 21:26:13,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 703 events. 76/703 cut-off events. For 1204/1207 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4322 event pairs, 34 based on Foata normal form. 1/666 useless extension candidates. Maximal degree in co-relation 1623. Up to 126 conditions per place. [2022-07-19 21:26:13,335 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 40 selfloop transitions, 17 changer transitions 32/245 dead transitions. [2022-07-19 21:26:13,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 245 transitions, 1372 flow [2022-07-19 21:26:13,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:26:13,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:26:13,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2917 transitions. [2022-07-19 21:26:13,336 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8170868347338935 [2022-07-19 21:26:13,336 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2917 transitions. [2022-07-19 21:26:13,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2917 transitions. [2022-07-19 21:26:13,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:13,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2917 transitions. [2022-07-19 21:26:13,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.58823529411765) internal successors, (2917), 17 states have internal predecessors, (2917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,342 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,342 INFO L186 Difference]: Start difference. First operand has 285 places, 211 transitions, 846 flow. Second operand 17 states and 2917 transitions. [2022-07-19 21:26:13,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 245 transitions, 1372 flow [2022-07-19 21:26:13,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 245 transitions, 1275 flow, removed 23 selfloop flow, removed 15 redundant places. [2022-07-19 21:26:13,353 INFO L242 Difference]: Finished difference. Result has 277 places, 211 transitions, 858 flow [2022-07-19 21:26:13,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=858, PETRI_PLACES=277, PETRI_TRANSITIONS=211} [2022-07-19 21:26:13,353 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 90 predicate places. [2022-07-19 21:26:13,353 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 211 transitions, 858 flow [2022-07-19 21:26:13,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:13,354 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:13,354 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:13,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-19 21:26:13,354 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:13,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:13,355 INFO L85 PathProgramCache]: Analyzing trace with hash 206953098, now seen corresponding path program 20 times [2022-07-19 21:26:13,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:13,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496201920] [2022-07-19 21:26:13,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:13,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:13,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:13,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496201920] [2022-07-19 21:26:13,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496201920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:13,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:13,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:26:13,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876522749] [2022-07-19 21:26:13,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:13,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:26:13,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:13,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:26:13,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:26:13,441 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-19 21:26:13,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 211 transitions, 858 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:13,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:13,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-19 21:26:13,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:13,684 INFO L129 PetriNetUnfolder]: 63/592 cut-off events. [2022-07-19 21:26:13,684 INFO L130 PetriNetUnfolder]: For 765/768 co-relation queries the response was YES. [2022-07-19 21:26:13,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1321 conditions, 592 events. 63/592 cut-off events. For 765/768 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3393 event pairs, 32 based on Foata normal form. 1/557 useless extension candidates. Maximal degree in co-relation 1258. Up to 103 conditions per place. [2022-07-19 21:26:13,689 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 29 selfloop transitions, 0 changer transitions 43/222 dead transitions. [2022-07-19 21:26:13,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 222 transitions, 1029 flow [2022-07-19 21:26:13,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:26:13,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:26:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3071 transitions. [2022-07-19 21:26:13,692 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8124338624338624 [2022-07-19 21:26:13,692 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3071 transitions. [2022-07-19 21:26:13,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3071 transitions. [2022-07-19 21:26:13,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:13,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3071 transitions. [2022-07-19 21:26:13,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.61111111111111) internal successors, (3071), 18 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,698 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,698 INFO L186 Difference]: Start difference. First operand has 277 places, 211 transitions, 858 flow. Second operand 18 states and 3071 transitions. [2022-07-19 21:26:13,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 222 transitions, 1029 flow [2022-07-19 21:26:13,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 222 transitions, 943 flow, removed 26 selfloop flow, removed 11 redundant places. [2022-07-19 21:26:13,706 INFO L242 Difference]: Finished difference. Result has 278 places, 179 transitions, 456 flow [2022-07-19 21:26:13,707 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=456, PETRI_PLACES=278, PETRI_TRANSITIONS=179} [2022-07-19 21:26:13,707 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 91 predicate places. [2022-07-19 21:26:13,707 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 179 transitions, 456 flow [2022-07-19 21:26:13,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 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 21:26:13,708 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:13,708 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:13,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-19 21:26:13,708 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:13,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:13,708 INFO L85 PathProgramCache]: Analyzing trace with hash 500637102, now seen corresponding path program 1 times [2022-07-19 21:26:13,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:13,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701567864] [2022-07-19 21:26:13,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:13,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:13,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:13,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701567864] [2022-07-19 21:26:13,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701567864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:13,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:13,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:26:13,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414557288] [2022-07-19 21:26:13,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:13,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:26:13,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:13,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:26:13,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:26:13,753 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-19 21:26:13,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 179 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:13,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-19 21:26:13,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:13,849 INFO L129 PetriNetUnfolder]: 59/781 cut-off events. [2022-07-19 21:26:13,849 INFO L130 PetriNetUnfolder]: For 391/400 co-relation queries the response was YES. [2022-07-19 21:26:13,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 781 events. 59/781 cut-off events. For 391/400 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5195 event pairs, 23 based on Foata normal form. 0/724 useless extension candidates. Maximal degree in co-relation 1220. Up to 33 conditions per place. [2022-07-19 21:26:13,855 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 13 selfloop transitions, 5 changer transitions 0/185 dead transitions. [2022-07-19 21:26:13,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 185 transitions, 507 flow [2022-07-19 21:26:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:26:13,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:26:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-19 21:26:13,857 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-19 21:26:13,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-19 21:26:13,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-19 21:26:13,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:13,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-19 21:26:13,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,858 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,859 INFO L186 Difference]: Start difference. First operand has 278 places, 179 transitions, 456 flow. Second operand 3 states and 591 transitions. [2022-07-19 21:26:13,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 185 transitions, 507 flow [2022-07-19 21:26:13,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 185 transitions, 481 flow, removed 13 selfloop flow, removed 10 redundant places. [2022-07-19 21:26:13,863 INFO L242 Difference]: Finished difference. Result has 224 places, 182 transitions, 468 flow [2022-07-19 21:26:13,863 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=224, PETRI_TRANSITIONS=182} [2022-07-19 21:26:13,864 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 37 predicate places. [2022-07-19 21:26:13,864 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 182 transitions, 468 flow [2022-07-19 21:26:13,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:13,864 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:13,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:13,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-19 21:26:13,865 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:13,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:13,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1964400122, now seen corresponding path program 1 times [2022-07-19 21:26:13,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:13,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536237415] [2022-07-19 21:26:13,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:13,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:13,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:13,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:13,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536237415] [2022-07-19 21:26:13,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536237415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:13,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:13,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:13,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910124003] [2022-07-19 21:26:13,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:13,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:13,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:13,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:14,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:14,001 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:14,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 182 transitions, 468 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:14,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:14,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:14,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:15,015 INFO L129 PetriNetUnfolder]: 459/1741 cut-off events. [2022-07-19 21:26:15,016 INFO L130 PetriNetUnfolder]: For 1002/1002 co-relation queries the response was YES. [2022-07-19 21:26:15,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3615 conditions, 1741 events. 459/1741 cut-off events. For 1002/1002 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 12849 event pairs, 191 based on Foata normal form. 1/1650 useless extension candidates. Maximal degree in co-relation 3565. Up to 625 conditions per place. [2022-07-19 21:26:15,030 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 158 selfloop transitions, 10 changer transitions 98/406 dead transitions. [2022-07-19 21:26:15,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 406 transitions, 1768 flow [2022-07-19 21:26:15,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-19 21:26:15,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-07-19 21:26:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9254 transitions. [2022-07-19 21:26:15,035 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7597701149425288 [2022-07-19 21:26:15,035 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9254 transitions. [2022-07-19 21:26:15,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9254 transitions. [2022-07-19 21:26:15,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:15,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9254 transitions. [2022-07-19 21:26:15,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.55172413793105) internal successors, (9254), 58 states have internal predecessors, (9254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,049 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,049 INFO L186 Difference]: Start difference. First operand has 224 places, 182 transitions, 468 flow. Second operand 58 states and 9254 transitions. [2022-07-19 21:26:15,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 406 transitions, 1768 flow [2022-07-19 21:26:15,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 406 transitions, 1758 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:15,058 INFO L242 Difference]: Finished difference. Result has 335 places, 191 transitions, 716 flow [2022-07-19 21:26:15,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=716, PETRI_PLACES=335, PETRI_TRANSITIONS=191} [2022-07-19 21:26:15,058 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 148 predicate places. [2022-07-19 21:26:15,059 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 191 transitions, 716 flow [2022-07-19 21:26:15,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,059 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:15,059 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:15,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-19 21:26:15,060 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:15,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:15,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1966886732, now seen corresponding path program 2 times [2022-07-19 21:26:15,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:15,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526710794] [2022-07-19 21:26:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:15,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:15,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:15,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526710794] [2022-07-19 21:26:15,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526710794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:15,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:15,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:26:15,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946202079] [2022-07-19 21:26:15,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:15,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:26:15,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:15,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:26:15,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:26:15,080 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-19 21:26:15,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 191 transitions, 716 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:15,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-19 21:26:15,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:15,253 INFO L129 PetriNetUnfolder]: 114/979 cut-off events. [2022-07-19 21:26:15,253 INFO L130 PetriNetUnfolder]: For 8058/8089 co-relation queries the response was YES. [2022-07-19 21:26:15,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3444 conditions, 979 events. 114/979 cut-off events. For 8058/8089 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6074 event pairs, 89 based on Foata normal form. 9/932 useless extension candidates. Maximal degree in co-relation 3338. Up to 56 conditions per place. [2022-07-19 21:26:15,263 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 18 selfloop transitions, 3 changer transitions 0/197 dead transitions. [2022-07-19 21:26:15,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 197 transitions, 779 flow [2022-07-19 21:26:15,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:26:15,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:26:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-19 21:26:15,264 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-19 21:26:15,265 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-19 21:26:15,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-19 21:26:15,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:15,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-19 21:26:15,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,266 INFO L186 Difference]: Start difference. First operand has 335 places, 191 transitions, 716 flow. Second operand 3 states and 591 transitions. [2022-07-19 21:26:15,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 197 transitions, 779 flow [2022-07-19 21:26:15,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 197 transitions, 732 flow, removed 23 selfloop flow, removed 20 redundant places. [2022-07-19 21:26:15,283 INFO L242 Difference]: Finished difference. Result has 272 places, 194 transitions, 705 flow [2022-07-19 21:26:15,283 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=705, PETRI_PLACES=272, PETRI_TRANSITIONS=194} [2022-07-19 21:26:15,284 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 85 predicate places. [2022-07-19 21:26:15,284 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 194 transitions, 705 flow [2022-07-19 21:26:15,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,284 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:15,284 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:15,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-19 21:26:15,284 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:15,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:15,285 INFO L85 PathProgramCache]: Analyzing trace with hash -724357054, now seen corresponding path program 1 times [2022-07-19 21:26:15,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:15,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344964260] [2022-07-19 21:26:15,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:15,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:15,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:15,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344964260] [2022-07-19 21:26:15,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344964260] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:15,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:15,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:15,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286097600] [2022-07-19 21:26:15,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:15,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:15,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:15,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:15,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:15,400 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:15,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 194 transitions, 705 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:15,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:15,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:15,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:16,185 INFO L129 PetriNetUnfolder]: 542/2054 cut-off events. [2022-07-19 21:26:16,185 INFO L130 PetriNetUnfolder]: For 13418/13445 co-relation queries the response was YES. [2022-07-19 21:26:16,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8126 conditions, 2054 events. 542/2054 cut-off events. For 13418/13445 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 15362 event pairs, 182 based on Foata normal form. 2/1993 useless extension candidates. Maximal degree in co-relation 8038. Up to 443 conditions per place. [2022-07-19 21:26:16,205 INFO L132 encePairwiseOnDemand]: 187/210 looper letters, 125 selfloop transitions, 49 changer transitions 98/415 dead transitions. [2022-07-19 21:26:16,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 415 transitions, 2872 flow [2022-07-19 21:26:16,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-19 21:26:16,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-19 21:26:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5513 transitions. [2022-07-19 21:26:16,248 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7721288515406163 [2022-07-19 21:26:16,249 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5513 transitions. [2022-07-19 21:26:16,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5513 transitions. [2022-07-19 21:26:16,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:16,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5513 transitions. [2022-07-19 21:26:16,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 162.14705882352942) internal successors, (5513), 34 states have internal predecessors, (5513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,257 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,257 INFO L186 Difference]: Start difference. First operand has 272 places, 194 transitions, 705 flow. Second operand 34 states and 5513 transitions. [2022-07-19 21:26:16,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 415 transitions, 2872 flow [2022-07-19 21:26:16,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 415 transitions, 2863 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-19 21:26:16,283 INFO L242 Difference]: Finished difference. Result has 333 places, 237 transitions, 1389 flow [2022-07-19 21:26:16,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1389, PETRI_PLACES=333, PETRI_TRANSITIONS=237} [2022-07-19 21:26:16,284 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 146 predicate places. [2022-07-19 21:26:16,284 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 237 transitions, 1389 flow [2022-07-19 21:26:16,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,284 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:16,284 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:16,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-19 21:26:16,285 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:16,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:16,285 INFO L85 PathProgramCache]: Analyzing trace with hash 845494072, now seen corresponding path program 1 times [2022-07-19 21:26:16,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:16,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014091101] [2022-07-19 21:26:16,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:16,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:16,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:16,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014091101] [2022-07-19 21:26:16,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014091101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:16,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:16,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:26:16,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998546896] [2022-07-19 21:26:16,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:16,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:26:16,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:16,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:26:16,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:26:16,312 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-19 21:26:16,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 237 transitions, 1389 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:16,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-19 21:26:16,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:16,551 INFO L129 PetriNetUnfolder]: 265/1750 cut-off events. [2022-07-19 21:26:16,551 INFO L130 PetriNetUnfolder]: For 24591/24775 co-relation queries the response was YES. [2022-07-19 21:26:16,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8742 conditions, 1750 events. 265/1750 cut-off events. For 24591/24775 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 13259 event pairs, 207 based on Foata normal form. 52/1732 useless extension candidates. Maximal degree in co-relation 8625. Up to 210 conditions per place. [2022-07-19 21:26:16,581 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 14 selfloop transitions, 3 changer transitions 2/243 dead transitions. [2022-07-19 21:26:16,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 243 transitions, 1440 flow [2022-07-19 21:26:16,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:26:16,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:26:16,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-19 21:26:16,582 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-19 21:26:16,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-19 21:26:16,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-19 21:26:16,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:16,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-19 21:26:16,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,584 INFO L186 Difference]: Start difference. First operand has 333 places, 237 transitions, 1389 flow. Second operand 3 states and 591 transitions. [2022-07-19 21:26:16,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 243 transitions, 1440 flow [2022-07-19 21:26:16,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 243 transitions, 1180 flow, removed 129 selfloop flow, removed 13 redundant places. [2022-07-19 21:26:16,667 INFO L242 Difference]: Finished difference. Result has 306 places, 238 transitions, 1148 flow [2022-07-19 21:26:16,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1148, PETRI_PLACES=306, PETRI_TRANSITIONS=238} [2022-07-19 21:26:16,667 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 119 predicate places. [2022-07-19 21:26:16,668 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 238 transitions, 1148 flow [2022-07-19 21:26:16,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,668 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:16,668 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:16,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-19 21:26:16,668 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:16,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:16,669 INFO L85 PathProgramCache]: Analyzing trace with hash 51948910, now seen corresponding path program 2 times [2022-07-19 21:26:16,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:16,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905518875] [2022-07-19 21:26:16,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:16,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:16,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:16,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905518875] [2022-07-19 21:26:16,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905518875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:16,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:16,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:16,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99099810] [2022-07-19 21:26:16,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:16,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:16,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:16,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:16,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:16,811 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:16,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 238 transitions, 1148 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:16,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:16,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:16,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:17,722 INFO L129 PetriNetUnfolder]: 683/2638 cut-off events. [2022-07-19 21:26:17,722 INFO L130 PetriNetUnfolder]: For 25050/25076 co-relation queries the response was YES. [2022-07-19 21:26:17,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12883 conditions, 2638 events. 683/2638 cut-off events. For 25050/25076 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 20528 event pairs, 393 based on Foata normal form. 2/2550 useless extension candidates. Maximal degree in co-relation 12777. Up to 1198 conditions per place. [2022-07-19 21:26:17,752 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 177 selfloop transitions, 26 changer transitions 49/396 dead transitions. [2022-07-19 21:26:17,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 396 transitions, 3300 flow [2022-07-19 21:26:17,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:26:17,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-19 21:26:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4191 transitions. [2022-07-19 21:26:17,756 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7675824175824176 [2022-07-19 21:26:17,756 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4191 transitions. [2022-07-19 21:26:17,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4191 transitions. [2022-07-19 21:26:17,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:17,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4191 transitions. [2022-07-19 21:26:17,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 161.19230769230768) internal successors, (4191), 26 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,761 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,762 INFO L186 Difference]: Start difference. First operand has 306 places, 238 transitions, 1148 flow. Second operand 26 states and 4191 transitions. [2022-07-19 21:26:17,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 396 transitions, 3300 flow [2022-07-19 21:26:17,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 396 transitions, 3297 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:26:17,822 INFO L242 Difference]: Finished difference. Result has 353 places, 261 transitions, 1636 flow [2022-07-19 21:26:17,822 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1636, PETRI_PLACES=353, PETRI_TRANSITIONS=261} [2022-07-19 21:26:17,823 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 166 predicate places. [2022-07-19 21:26:17,823 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 261 transitions, 1636 flow [2022-07-19 21:26:17,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,823 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:17,824 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:17,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-19 21:26:17,824 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:17,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:17,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2029902456, now seen corresponding path program 1 times [2022-07-19 21:26:17,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:17,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373871079] [2022-07-19 21:26:17,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:17,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:17,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:17,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373871079] [2022-07-19 21:26:17,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373871079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:17,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:17,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:26:17,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094503459] [2022-07-19 21:26:17,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:17,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:26:17,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:17,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:26:17,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:26:17,848 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-19 21:26:17,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 261 transitions, 1636 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:17,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:17,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-19 21:26:17,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:18,112 INFO L129 PetriNetUnfolder]: 135/1212 cut-off events. [2022-07-19 21:26:18,112 INFO L130 PetriNetUnfolder]: For 12986/13036 co-relation queries the response was YES. [2022-07-19 21:26:18,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5452 conditions, 1212 events. 135/1212 cut-off events. For 12986/13036 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8353 event pairs, 112 based on Foata normal form. 24/1199 useless extension candidates. Maximal degree in co-relation 5323. Up to 119 conditions per place. [2022-07-19 21:26:18,130 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 15 selfloop transitions, 5 changer transitions 10/239 dead transitions. [2022-07-19 21:26:18,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 239 transitions, 1471 flow [2022-07-19 21:26:18,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:26:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:26:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-19 21:26:18,131 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-19 21:26:18,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-19 21:26:18,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-19 21:26:18,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:18,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-19 21:26:18,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:18,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:18,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:18,133 INFO L186 Difference]: Start difference. First operand has 353 places, 261 transitions, 1636 flow. Second operand 3 states and 591 transitions. [2022-07-19 21:26:18,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 239 transitions, 1471 flow [2022-07-19 21:26:18,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 239 transitions, 1164 flow, removed 139 selfloop flow, removed 18 redundant places. [2022-07-19 21:26:18,207 INFO L242 Difference]: Finished difference. Result has 322 places, 226 transitions, 1090 flow [2022-07-19 21:26:18,207 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1090, PETRI_PLACES=322, PETRI_TRANSITIONS=226} [2022-07-19 21:26:18,208 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 135 predicate places. [2022-07-19 21:26:18,208 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 226 transitions, 1090 flow [2022-07-19 21:26:18,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:18,208 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:18,209 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:18,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-19 21:26:18,209 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:18,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:18,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1875410008, now seen corresponding path program 3 times [2022-07-19 21:26:18,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:18,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982659449] [2022-07-19 21:26:18,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:18,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:18,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:18,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982659449] [2022-07-19 21:26:18,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982659449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:18,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:18,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:18,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864644531] [2022-07-19 21:26:18,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:18,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:18,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:18,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:18,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:18,353 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:18,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 226 transitions, 1090 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:18,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:18,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:18,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:19,090 INFO L129 PetriNetUnfolder]: 375/1672 cut-off events. [2022-07-19 21:26:19,090 INFO L130 PetriNetUnfolder]: For 13839/13868 co-relation queries the response was YES. [2022-07-19 21:26:19,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7453 conditions, 1672 events. 375/1672 cut-off events. For 13839/13868 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11701 event pairs, 197 based on Foata normal form. 1/1624 useless extension candidates. Maximal degree in co-relation 7339. Up to 580 conditions per place. [2022-07-19 21:26:19,103 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 128 selfloop transitions, 30 changer transitions 49/352 dead transitions. [2022-07-19 21:26:19,103 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 352 transitions, 2663 flow [2022-07-19 21:26:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 21:26:19,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-19 21:26:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4351 transitions. [2022-07-19 21:26:19,105 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7673721340388007 [2022-07-19 21:26:19,106 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4351 transitions. [2022-07-19 21:26:19,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4351 transitions. [2022-07-19 21:26:19,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:19,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4351 transitions. [2022-07-19 21:26:19,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.14814814814815) internal successors, (4351), 27 states have internal predecessors, (4351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,112 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,112 INFO L186 Difference]: Start difference. First operand has 322 places, 226 transitions, 1090 flow. Second operand 27 states and 4351 transitions. [2022-07-19 21:26:19,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 352 transitions, 2663 flow [2022-07-19 21:26:19,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 352 transitions, 2631 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-07-19 21:26:19,157 INFO L242 Difference]: Finished difference. Result has 357 places, 248 transitions, 1445 flow [2022-07-19 21:26:19,157 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1445, PETRI_PLACES=357, PETRI_TRANSITIONS=248} [2022-07-19 21:26:19,158 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 170 predicate places. [2022-07-19 21:26:19,158 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 248 transitions, 1445 flow [2022-07-19 21:26:19,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,158 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:19,159 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:19,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-19 21:26:19,159 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:19,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:19,159 INFO L85 PathProgramCache]: Analyzing trace with hash -147000172, now seen corresponding path program 1 times [2022-07-19 21:26:19,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:19,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530873288] [2022-07-19 21:26:19,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:19,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:19,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:19,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530873288] [2022-07-19 21:26:19,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530873288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:19,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:19,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:19,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430523371] [2022-07-19 21:26:19,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:19,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:19,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:19,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:19,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:19,302 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:19,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 248 transitions, 1445 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:19,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:19,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:19,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:20,394 INFO L129 PetriNetUnfolder]: 526/2048 cut-off events. [2022-07-19 21:26:20,394 INFO L130 PetriNetUnfolder]: For 26454/26510 co-relation queries the response was YES. [2022-07-19 21:26:20,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10889 conditions, 2048 events. 526/2048 cut-off events. For 26454/26510 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 14752 event pairs, 245 based on Foata normal form. 1/1996 useless extension candidates. Maximal degree in co-relation 10758. Up to 753 conditions per place. [2022-07-19 21:26:20,419 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 171 selfloop transitions, 25 changer transitions 70/417 dead transitions. [2022-07-19 21:26:20,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 417 transitions, 4670 flow [2022-07-19 21:26:20,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-19 21:26:20,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-19 21:26:20,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7023 transitions. [2022-07-19 21:26:20,423 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7600649350649351 [2022-07-19 21:26:20,423 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7023 transitions. [2022-07-19 21:26:20,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7023 transitions. [2022-07-19 21:26:20,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:20,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7023 transitions. [2022-07-19 21:26:20,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.61363636363637) internal successors, (7023), 44 states have internal predecessors, (7023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,434 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,434 INFO L186 Difference]: Start difference. First operand has 357 places, 248 transitions, 1445 flow. Second operand 44 states and 7023 transitions. [2022-07-19 21:26:20,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 417 transitions, 4670 flow [2022-07-19 21:26:20,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 417 transitions, 4539 flow, removed 59 selfloop flow, removed 12 redundant places. [2022-07-19 21:26:20,511 INFO L242 Difference]: Finished difference. Result has 413 places, 274 transitions, 1914 flow [2022-07-19 21:26:20,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1914, PETRI_PLACES=413, PETRI_TRANSITIONS=274} [2022-07-19 21:26:20,512 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 226 predicate places. [2022-07-19 21:26:20,512 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 274 transitions, 1914 flow [2022-07-19 21:26:20,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,513 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:20,513 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:20,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-19 21:26:20,513 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:20,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:20,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1251028272, now seen corresponding path program 4 times [2022-07-19 21:26:20,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:20,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548543369] [2022-07-19 21:26:20,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:20,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:20,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:20,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548543369] [2022-07-19 21:26:20,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548543369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:20,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:20,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:20,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500788612] [2022-07-19 21:26:20,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:20,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:20,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:20,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:20,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:20,660 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:20,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 274 transitions, 1914 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:20,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:20,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:20,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:21,860 INFO L129 PetriNetUnfolder]: 579/2226 cut-off events. [2022-07-19 21:26:21,860 INFO L130 PetriNetUnfolder]: For 43896/43931 co-relation queries the response was YES. [2022-07-19 21:26:21,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13344 conditions, 2226 events. 579/2226 cut-off events. For 43896/43931 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 16466 event pairs, 278 based on Foata normal form. 10/2180 useless extension candidates. Maximal degree in co-relation 13185. Up to 817 conditions per place. [2022-07-19 21:26:21,885 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 183 selfloop transitions, 35 changer transitions 74/441 dead transitions. [2022-07-19 21:26:21,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 441 transitions, 4416 flow [2022-07-19 21:26:21,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-19 21:26:21,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-19 21:26:21,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7025 transitions. [2022-07-19 21:26:21,889 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7602813852813853 [2022-07-19 21:26:21,890 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7025 transitions. [2022-07-19 21:26:21,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7025 transitions. [2022-07-19 21:26:21,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:21,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7025 transitions. [2022-07-19 21:26:21,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6590909090909) internal successors, (7025), 44 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,901 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:21,901 INFO L186 Difference]: Start difference. First operand has 413 places, 274 transitions, 1914 flow. Second operand 44 states and 7025 transitions. [2022-07-19 21:26:21,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 441 transitions, 4416 flow [2022-07-19 21:26:22,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 441 transitions, 4016 flow, removed 200 selfloop flow, removed 29 redundant places. [2022-07-19 21:26:22,013 INFO L242 Difference]: Finished difference. Result has 432 places, 297 transitions, 2073 flow [2022-07-19 21:26:22,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2073, PETRI_PLACES=432, PETRI_TRANSITIONS=297} [2022-07-19 21:26:22,013 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 245 predicate places. [2022-07-19 21:26:22,013 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 297 transitions, 2073 flow [2022-07-19 21:26:22,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:22,014 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:22,014 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:22,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-19 21:26:22,014 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:22,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:22,014 INFO L85 PathProgramCache]: Analyzing trace with hash -792355658, now seen corresponding path program 5 times [2022-07-19 21:26:22,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:22,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696969686] [2022-07-19 21:26:22,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:22,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:22,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:22,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696969686] [2022-07-19 21:26:22,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696969686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:22,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:22,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:22,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324068302] [2022-07-19 21:26:22,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:22,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:22,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:22,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:22,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:22,153 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:22,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 297 transitions, 2073 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:22,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:22,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:22,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:23,535 INFO L129 PetriNetUnfolder]: 652/2469 cut-off events. [2022-07-19 21:26:23,535 INFO L130 PetriNetUnfolder]: For 42227/42269 co-relation queries the response was YES. [2022-07-19 21:26:23,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14893 conditions, 2469 events. 652/2469 cut-off events. For 42227/42269 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 18857 event pairs, 345 based on Foata normal form. 11/2421 useless extension candidates. Maximal degree in co-relation 14726. Up to 789 conditions per place. [2022-07-19 21:26:23,586 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 215 selfloop transitions, 43 changer transitions 89/496 dead transitions. [2022-07-19 21:26:23,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 496 transitions, 5865 flow [2022-07-19 21:26:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-19 21:26:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-07-19 21:26:23,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7972 transitions. [2022-07-19 21:26:23,591 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7592380952380953 [2022-07-19 21:26:23,591 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7972 transitions. [2022-07-19 21:26:23,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7972 transitions. [2022-07-19 21:26:23,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:23,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7972 transitions. [2022-07-19 21:26:23,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.44) internal successors, (7972), 50 states have internal predecessors, (7972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:23,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:23,605 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:23,605 INFO L186 Difference]: Start difference. First operand has 432 places, 297 transitions, 2073 flow. Second operand 50 states and 7972 transitions. [2022-07-19 21:26:23,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 496 transitions, 5865 flow [2022-07-19 21:26:23,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 496 transitions, 5217 flow, removed 324 selfloop flow, removed 22 redundant places. [2022-07-19 21:26:23,791 INFO L242 Difference]: Finished difference. Result has 475 places, 316 transitions, 2514 flow [2022-07-19 21:26:23,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=2514, PETRI_PLACES=475, PETRI_TRANSITIONS=316} [2022-07-19 21:26:23,792 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 288 predicate places. [2022-07-19 21:26:23,792 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 316 transitions, 2514 flow [2022-07-19 21:26:23,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:23,793 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:23,793 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:23,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-19 21:26:23,793 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:23,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:23,794 INFO L85 PathProgramCache]: Analyzing trace with hash 642885540, now seen corresponding path program 6 times [2022-07-19 21:26:23,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:23,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598926588] [2022-07-19 21:26:23,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:23,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:23,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:23,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598926588] [2022-07-19 21:26:23,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598926588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:23,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:23,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:23,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965136663] [2022-07-19 21:26:23,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:23,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:23,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:23,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:23,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:23,949 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:23,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 316 transitions, 2514 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:23,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:23,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:23,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:25,289 INFO L129 PetriNetUnfolder]: 650/2419 cut-off events. [2022-07-19 21:26:25,289 INFO L130 PetriNetUnfolder]: For 50402/50447 co-relation queries the response was YES. [2022-07-19 21:26:25,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15883 conditions, 2419 events. 650/2419 cut-off events. For 50402/50447 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 18510 event pairs, 245 based on Foata normal form. 10/2373 useless extension candidates. Maximal degree in co-relation 15690. Up to 735 conditions per place. [2022-07-19 21:26:25,329 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 299 selfloop transitions, 52 changer transitions 109/609 dead transitions. [2022-07-19 21:26:25,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 609 transitions, 8262 flow [2022-07-19 21:26:25,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-19 21:26:25,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-07-19 21:26:25,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9230 transitions. [2022-07-19 21:26:25,333 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7577996715927751 [2022-07-19 21:26:25,333 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9230 transitions. [2022-07-19 21:26:25,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9230 transitions. [2022-07-19 21:26:25,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:25,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9230 transitions. [2022-07-19 21:26:25,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.13793103448276) internal successors, (9230), 58 states have internal predecessors, (9230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,345 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,345 INFO L186 Difference]: Start difference. First operand has 475 places, 316 transitions, 2514 flow. Second operand 58 states and 9230 transitions. [2022-07-19 21:26:25,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 609 transitions, 8262 flow [2022-07-19 21:26:25,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 609 transitions, 7490 flow, removed 375 selfloop flow, removed 29 redundant places. [2022-07-19 21:26:25,621 INFO L242 Difference]: Finished difference. Result has 514 places, 318 transitions, 2706 flow [2022-07-19 21:26:25,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=2706, PETRI_PLACES=514, PETRI_TRANSITIONS=318} [2022-07-19 21:26:25,622 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 327 predicate places. [2022-07-19 21:26:25,622 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 318 transitions, 2706 flow [2022-07-19 21:26:25,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,623 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:25,624 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:25,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-19 21:26:25,624 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:25,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:25,624 INFO L85 PathProgramCache]: Analyzing trace with hash 365761050, now seen corresponding path program 7 times [2022-07-19 21:26:25,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:25,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932549077] [2022-07-19 21:26:25,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:25,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:25,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:25,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932549077] [2022-07-19 21:26:25,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932549077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:25,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:25,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:25,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444101221] [2022-07-19 21:26:25,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:25,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:25,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:25,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:25,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:25,818 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:25,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 318 transitions, 2706 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:25,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:25,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:25,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:27,530 INFO L129 PetriNetUnfolder]: 694/2549 cut-off events. [2022-07-19 21:26:27,531 INFO L130 PetriNetUnfolder]: For 49590/49645 co-relation queries the response was YES. [2022-07-19 21:26:27,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17002 conditions, 2549 events. 694/2549 cut-off events. For 49590/49645 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 19901 event pairs, 274 based on Foata normal form. 25/2512 useless extension candidates. Maximal degree in co-relation 16788. Up to 869 conditions per place. [2022-07-19 21:26:27,571 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 220 selfloop transitions, 56 changer transitions 88/513 dead transitions. [2022-07-19 21:26:27,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 513 transitions, 6934 flow [2022-07-19 21:26:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-19 21:26:27,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-07-19 21:26:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 8594 transitions. [2022-07-19 21:26:27,575 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7578483245149912 [2022-07-19 21:26:27,575 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 8594 transitions. [2022-07-19 21:26:27,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 8594 transitions. [2022-07-19 21:26:27,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:27,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 8594 transitions. [2022-07-19 21:26:27,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 159.14814814814815) internal successors, (8594), 54 states have internal predecessors, (8594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:27,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:27,585 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:27,585 INFO L186 Difference]: Start difference. First operand has 514 places, 318 transitions, 2706 flow. Second operand 54 states and 8594 transitions. [2022-07-19 21:26:27,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 513 transitions, 6934 flow [2022-07-19 21:26:27,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 513 transitions, 6539 flow, removed 74 selfloop flow, removed 47 redundant places. [2022-07-19 21:26:27,770 INFO L242 Difference]: Finished difference. Result has 515 places, 334 transitions, 3042 flow [2022-07-19 21:26:27,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2552, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=3042, PETRI_PLACES=515, PETRI_TRANSITIONS=334} [2022-07-19 21:26:27,771 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 328 predicate places. [2022-07-19 21:26:27,771 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 334 transitions, 3042 flow [2022-07-19 21:26:27,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:27,771 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:27,771 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:27,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-19 21:26:27,771 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:27,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:27,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1704453830, now seen corresponding path program 8 times [2022-07-19 21:26:27,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:27,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148270115] [2022-07-19 21:26:27,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:27,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:27,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:27,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:27,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148270115] [2022-07-19 21:26:27,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148270115] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:27,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:27,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:27,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500296682] [2022-07-19 21:26:27,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:27,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:27,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:27,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:27,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:27,908 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:27,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 334 transitions, 3042 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:27,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:27,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:27,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:29,539 INFO L129 PetriNetUnfolder]: 705/2592 cut-off events. [2022-07-19 21:26:29,539 INFO L130 PetriNetUnfolder]: For 64910/64966 co-relation queries the response was YES. [2022-07-19 21:26:29,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18701 conditions, 2592 events. 705/2592 cut-off events. For 64910/64966 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 20318 event pairs, 383 based on Foata normal form. 15/2539 useless extension candidates. Maximal degree in co-relation 18488. Up to 899 conditions per place. [2022-07-19 21:26:29,579 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 236 selfloop transitions, 42 changer transitions 89/516 dead transitions. [2022-07-19 21:26:29,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 516 transitions, 7988 flow [2022-07-19 21:26:29,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-19 21:26:29,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-07-19 21:26:29,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8133 transitions. [2022-07-19 21:26:29,583 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7593837535014005 [2022-07-19 21:26:29,583 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8133 transitions. [2022-07-19 21:26:29,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8133 transitions. [2022-07-19 21:26:29,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:29,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8133 transitions. [2022-07-19 21:26:29,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 159.47058823529412) internal successors, (8133), 51 states have internal predecessors, (8133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,594 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,594 INFO L186 Difference]: Start difference. First operand has 515 places, 334 transitions, 3042 flow. Second operand 51 states and 8133 transitions. [2022-07-19 21:26:29,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 516 transitions, 7988 flow [2022-07-19 21:26:29,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 516 transitions, 7078 flow, removed 444 selfloop flow, removed 36 redundant places. [2022-07-19 21:26:29,788 INFO L242 Difference]: Finished difference. Result has 533 places, 354 transitions, 3586 flow [2022-07-19 21:26:29,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2932, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=3586, PETRI_PLACES=533, PETRI_TRANSITIONS=354} [2022-07-19 21:26:29,789 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 346 predicate places. [2022-07-19 21:26:29,789 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 354 transitions, 3586 flow [2022-07-19 21:26:29,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,789 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:29,790 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:29,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-19 21:26:29,790 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:29,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:29,790 INFO L85 PathProgramCache]: Analyzing trace with hash 191725786, now seen corresponding path program 9 times [2022-07-19 21:26:29,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:29,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957311386] [2022-07-19 21:26:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:29,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:29,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:29,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957311386] [2022-07-19 21:26:29,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957311386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:29,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:29,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:29,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664193066] [2022-07-19 21:26:29,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:29,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:29,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:29,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:29,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:29,920 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:29,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 354 transitions, 3586 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:29,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:29,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:29,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:31,343 INFO L129 PetriNetUnfolder]: 692/2586 cut-off events. [2022-07-19 21:26:31,343 INFO L130 PetriNetUnfolder]: For 69167/69230 co-relation queries the response was YES. [2022-07-19 21:26:31,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18900 conditions, 2586 events. 692/2586 cut-off events. For 69167/69230 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 20421 event pairs, 300 based on Foata normal form. 25/2537 useless extension candidates. Maximal degree in co-relation 18676. Up to 927 conditions per place. [2022-07-19 21:26:31,390 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 250 selfloop transitions, 67 changer transitions 79/545 dead transitions. [2022-07-19 21:26:31,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 545 transitions, 8540 flow [2022-07-19 21:26:31,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-19 21:26:31,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-07-19 21:26:31,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6702 transitions. [2022-07-19 21:26:31,394 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7598639455782313 [2022-07-19 21:26:31,395 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6702 transitions. [2022-07-19 21:26:31,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6702 transitions. [2022-07-19 21:26:31,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:31,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6702 transitions. [2022-07-19 21:26:31,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 159.57142857142858) internal successors, (6702), 42 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,404 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,404 INFO L186 Difference]: Start difference. First operand has 533 places, 354 transitions, 3586 flow. Second operand 42 states and 6702 transitions. [2022-07-19 21:26:31,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 545 transitions, 8540 flow [2022-07-19 21:26:31,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 545 transitions, 7732 flow, removed 404 selfloop flow, removed 36 redundant places. [2022-07-19 21:26:31,738 INFO L242 Difference]: Finished difference. Result has 532 places, 376 transitions, 4069 flow [2022-07-19 21:26:31,739 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3410, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=4069, PETRI_PLACES=532, PETRI_TRANSITIONS=376} [2022-07-19 21:26:31,739 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 345 predicate places. [2022-07-19 21:26:31,739 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 376 transitions, 4069 flow [2022-07-19 21:26:31,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,740 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:31,740 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:31,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-19 21:26:31,740 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:31,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:31,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1112861422, now seen corresponding path program 10 times [2022-07-19 21:26:31,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:31,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604920131] [2022-07-19 21:26:31,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:31,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:31,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:31,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604920131] [2022-07-19 21:26:31,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604920131] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:31,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:31,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:31,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609250466] [2022-07-19 21:26:31,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:31,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:31,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:31,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:31,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:31,872 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:31,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 376 transitions, 4069 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:31,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:31,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:31,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:33,442 INFO L129 PetriNetUnfolder]: 690/2600 cut-off events. [2022-07-19 21:26:33,442 INFO L130 PetriNetUnfolder]: For 61328/61384 co-relation queries the response was YES. [2022-07-19 21:26:33,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18540 conditions, 2600 events. 690/2600 cut-off events. For 61328/61384 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 20641 event pairs, 324 based on Foata normal form. 11/2537 useless extension candidates. Maximal degree in co-relation 18318. Up to 924 conditions per place. [2022-07-19 21:26:33,484 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 301 selfloop transitions, 80 changer transitions 93/623 dead transitions. [2022-07-19 21:26:33,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 623 transitions, 10587 flow [2022-07-19 21:26:33,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-19 21:26:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-07-19 21:26:33,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7963 transitions. [2022-07-19 21:26:33,488 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7583809523809524 [2022-07-19 21:26:33,488 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7963 transitions. [2022-07-19 21:26:33,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7963 transitions. [2022-07-19 21:26:33,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:33,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7963 transitions. [2022-07-19 21:26:33,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.26) internal successors, (7963), 50 states have internal predecessors, (7963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,498 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,498 INFO L186 Difference]: Start difference. First operand has 532 places, 376 transitions, 4069 flow. Second operand 50 states and 7963 transitions. [2022-07-19 21:26:33,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 623 transitions, 10587 flow [2022-07-19 21:26:33,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 623 transitions, 9889 flow, removed 261 selfloop flow, removed 24 redundant places. [2022-07-19 21:26:33,811 INFO L242 Difference]: Finished difference. Result has 573 places, 409 transitions, 4993 flow [2022-07-19 21:26:33,811 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3806, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=4993, PETRI_PLACES=573, PETRI_TRANSITIONS=409} [2022-07-19 21:26:33,812 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 386 predicate places. [2022-07-19 21:26:33,812 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 409 transitions, 4993 flow [2022-07-19 21:26:33,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,813 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:33,813 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:33,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-19 21:26:33,813 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:33,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:33,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1951022846, now seen corresponding path program 11 times [2022-07-19 21:26:33,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:33,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000578790] [2022-07-19 21:26:33,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:33,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:33,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:33,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000578790] [2022-07-19 21:26:33,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000578790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:33,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:33,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:33,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317362192] [2022-07-19 21:26:33,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:33,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:33,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:33,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:33,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:33,971 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:33,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 409 transitions, 4993 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:33,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:33,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:33,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:35,684 INFO L129 PetriNetUnfolder]: 684/2615 cut-off events. [2022-07-19 21:26:35,684 INFO L130 PetriNetUnfolder]: For 67731/67805 co-relation queries the response was YES. [2022-07-19 21:26:35,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19035 conditions, 2615 events. 684/2615 cut-off events. For 67731/67805 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 20883 event pairs, 276 based on Foata normal form. 36/2586 useless extension candidates. Maximal degree in co-relation 18789. Up to 900 conditions per place. [2022-07-19 21:26:35,744 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 107 changer transitions 82/606 dead transitions. [2022-07-19 21:26:35,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 606 transitions, 10351 flow [2022-07-19 21:26:35,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-19 21:26:35,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-07-19 21:26:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7332 transitions. [2022-07-19 21:26:35,748 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7590062111801242 [2022-07-19 21:26:35,748 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7332 transitions. [2022-07-19 21:26:35,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7332 transitions. [2022-07-19 21:26:35,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:35,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7332 transitions. [2022-07-19 21:26:35,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.3913043478261) internal successors, (7332), 46 states have internal predecessors, (7332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:35,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:35,866 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:35,866 INFO L186 Difference]: Start difference. First operand has 573 places, 409 transitions, 4993 flow. Second operand 46 states and 7332 transitions. [2022-07-19 21:26:35,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 606 transitions, 10351 flow [2022-07-19 21:26:36,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 606 transitions, 9296 flow, removed 483 selfloop flow, removed 36 redundant places. [2022-07-19 21:26:36,185 INFO L242 Difference]: Finished difference. Result has 576 places, 419 transitions, 4951 flow [2022-07-19 21:26:36,186 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4429, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4951, PETRI_PLACES=576, PETRI_TRANSITIONS=419} [2022-07-19 21:26:36,186 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 389 predicate places. [2022-07-19 21:26:36,186 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 419 transitions, 4951 flow [2022-07-19 21:26:36,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,187 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:36,187 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:36,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-19 21:26:36,187 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:36,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:36,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1823463120, now seen corresponding path program 12 times [2022-07-19 21:26:36,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:36,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644465642] [2022-07-19 21:26:36,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:36,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:36,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:36,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:36,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644465642] [2022-07-19 21:26:36,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644465642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:36,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:36,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:36,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846694326] [2022-07-19 21:26:36,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:36,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:36,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:36,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:36,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:36,360 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:36,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 419 transitions, 4951 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:36,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:36,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:36,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:38,146 INFO L129 PetriNetUnfolder]: 744/2777 cut-off events. [2022-07-19 21:26:38,147 INFO L130 PetriNetUnfolder]: For 68872/68940 co-relation queries the response was YES. [2022-07-19 21:26:38,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20420 conditions, 2777 events. 744/2777 cut-off events. For 68872/68940 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 22437 event pairs, 346 based on Foata normal form. 23/2735 useless extension candidates. Maximal degree in co-relation 20176. Up to 900 conditions per place. [2022-07-19 21:26:38,203 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 262 selfloop transitions, 109 changer transitions 92/612 dead transitions. [2022-07-19 21:26:38,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 612 transitions, 10117 flow [2022-07-19 21:26:38,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-19 21:26:38,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-07-19 21:26:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8287 transitions. [2022-07-19 21:26:38,208 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7588827838827839 [2022-07-19 21:26:38,208 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8287 transitions. [2022-07-19 21:26:38,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8287 transitions. [2022-07-19 21:26:38,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:38,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8287 transitions. [2022-07-19 21:26:38,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.3653846153846) internal successors, (8287), 52 states have internal predecessors, (8287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,220 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,220 INFO L186 Difference]: Start difference. First operand has 576 places, 419 transitions, 4951 flow. Second operand 52 states and 8287 transitions. [2022-07-19 21:26:38,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 612 transitions, 10117 flow [2022-07-19 21:26:38,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 612 transitions, 9568 flow, removed 240 selfloop flow, removed 38 redundant places. [2022-07-19 21:26:38,553 INFO L242 Difference]: Finished difference. Result has 601 places, 446 transitions, 5737 flow [2022-07-19 21:26:38,553 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4782, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=5737, PETRI_PLACES=601, PETRI_TRANSITIONS=446} [2022-07-19 21:26:38,554 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 414 predicate places. [2022-07-19 21:26:38,554 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 446 transitions, 5737 flow [2022-07-19 21:26:38,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,554 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:38,555 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:38,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-19 21:26:38,555 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:38,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:38,555 INFO L85 PathProgramCache]: Analyzing trace with hash -340446058, now seen corresponding path program 13 times [2022-07-19 21:26:38,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:38,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381575006] [2022-07-19 21:26:38,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:38,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:38,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:38,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:38,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381575006] [2022-07-19 21:26:38,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381575006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:38,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:38,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:38,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452953225] [2022-07-19 21:26:38,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:38,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:38,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:38,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:38,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:38,711 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:38,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 446 transitions, 5737 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:38,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:38,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:38,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:39,994 INFO L129 PetriNetUnfolder]: 735/2727 cut-off events. [2022-07-19 21:26:39,994 INFO L130 PetriNetUnfolder]: For 71828/71908 co-relation queries the response was YES. [2022-07-19 21:26:40,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20498 conditions, 2727 events. 735/2727 cut-off events. For 71828/71908 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21926 event pairs, 292 based on Foata normal form. 40/2693 useless extension candidates. Maximal degree in co-relation 20246. Up to 948 conditions per place. [2022-07-19 21:26:40,196 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 261 selfloop transitions, 135 changer transitions 60/605 dead transitions. [2022-07-19 21:26:40,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 605 transitions, 10141 flow [2022-07-19 21:26:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-19 21:26:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-19 21:26:40,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-07-19 21:26:40,199 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-07-19 21:26:40,199 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-07-19 21:26:40,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-07-19 21:26:40,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:40,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-07-19 21:26:40,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:40,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:40,205 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:40,205 INFO L186 Difference]: Start difference. First operand has 601 places, 446 transitions, 5737 flow. Second operand 30 states and 4809 transitions. [2022-07-19 21:26:40,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 605 transitions, 10141 flow [2022-07-19 21:26:40,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 605 transitions, 9609 flow, removed 231 selfloop flow, removed 42 redundant places. [2022-07-19 21:26:40,667 INFO L242 Difference]: Finished difference. Result has 562 places, 464 transitions, 6269 flow [2022-07-19 21:26:40,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5511, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6269, PETRI_PLACES=562, PETRI_TRANSITIONS=464} [2022-07-19 21:26:40,668 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 375 predicate places. [2022-07-19 21:26:40,668 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 464 transitions, 6269 flow [2022-07-19 21:26:40,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:40,669 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:40,669 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:40,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-07-19 21:26:40,669 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:40,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:40,670 INFO L85 PathProgramCache]: Analyzing trace with hash 193940962, now seen corresponding path program 14 times [2022-07-19 21:26:40,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:40,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738987472] [2022-07-19 21:26:40,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:40,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:40,810 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 21:26:40,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:40,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738987472] [2022-07-19 21:26:40,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738987472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:40,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:40,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:40,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208302435] [2022-07-19 21:26:40,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:40,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:40,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:40,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:40,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:40,812 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:40,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 464 transitions, 6269 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:40,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:40,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:40,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:42,459 INFO L129 PetriNetUnfolder]: 744/2779 cut-off events. [2022-07-19 21:26:42,459 INFO L130 PetriNetUnfolder]: For 67967/68049 co-relation queries the response was YES. [2022-07-19 21:26:42,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20492 conditions, 2779 events. 744/2779 cut-off events. For 67967/68049 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 22459 event pairs, 301 based on Foata normal form. 36/2747 useless extension candidates. Maximal degree in co-relation 20266. Up to 920 conditions per place. [2022-07-19 21:26:42,512 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 302 selfloop transitions, 115 changer transitions 95/661 dead transitions. [2022-07-19 21:26:42,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 661 transitions, 11694 flow [2022-07-19 21:26:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-19 21:26:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-07-19 21:26:42,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 8441 transitions. [2022-07-19 21:26:42,516 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7584007187780772 [2022-07-19 21:26:42,516 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 8441 transitions. [2022-07-19 21:26:42,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 8441 transitions. [2022-07-19 21:26:42,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:42,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 8441 transitions. [2022-07-19 21:26:42,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 159.26415094339623) internal successors, (8441), 53 states have internal predecessors, (8441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:42,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:42,637 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:42,637 INFO L186 Difference]: Start difference. First operand has 562 places, 464 transitions, 6269 flow. Second operand 53 states and 8441 transitions. [2022-07-19 21:26:42,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 661 transitions, 11694 flow [2022-07-19 21:26:43,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 661 transitions, 11371 flow, removed 127 selfloop flow, removed 11 redundant places. [2022-07-19 21:26:43,070 INFO L242 Difference]: Finished difference. Result has 631 places, 470 transitions, 6643 flow [2022-07-19 21:26:43,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6060, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=6643, PETRI_PLACES=631, PETRI_TRANSITIONS=470} [2022-07-19 21:26:43,071 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 444 predicate places. [2022-07-19 21:26:43,071 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 470 transitions, 6643 flow [2022-07-19 21:26:43,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:43,071 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:43,072 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:43,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-07-19 21:26:43,072 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:43,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:43,072 INFO L85 PathProgramCache]: Analyzing trace with hash -758267650, now seen corresponding path program 15 times [2022-07-19 21:26:43,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:43,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151704574] [2022-07-19 21:26:43,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:43,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:43,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:43,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151704574] [2022-07-19 21:26:43,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151704574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:43,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:43,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:43,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577422559] [2022-07-19 21:26:43,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:43,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:43,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:43,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:43,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:43,224 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:43,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 470 transitions, 6643 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:43,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:43,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:43,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:44,738 INFO L129 PetriNetUnfolder]: 721/2664 cut-off events. [2022-07-19 21:26:44,739 INFO L130 PetriNetUnfolder]: For 71988/72064 co-relation queries the response was YES. [2022-07-19 21:26:44,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20459 conditions, 2664 events. 721/2664 cut-off events. For 71988/72064 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21176 event pairs, 308 based on Foata normal form. 29/2619 useless extension candidates. Maximal degree in co-relation 20199. Up to 942 conditions per place. [2022-07-19 21:26:44,798 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 272 selfloop transitions, 138 changer transitions 72/631 dead transitions. [2022-07-19 21:26:44,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 631 transitions, 11628 flow [2022-07-19 21:26:44,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-19 21:26:44,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-19 21:26:44,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5441 transitions. [2022-07-19 21:26:44,801 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7620448179271708 [2022-07-19 21:26:44,801 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5441 transitions. [2022-07-19 21:26:44,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5441 transitions. [2022-07-19 21:26:44,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:44,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5441 transitions. [2022-07-19 21:26:44,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.02941176470588) internal successors, (5441), 34 states have internal predecessors, (5441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:44,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:44,808 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:44,808 INFO L186 Difference]: Start difference. First operand has 631 places, 470 transitions, 6643 flow. Second operand 34 states and 5441 transitions. [2022-07-19 21:26:44,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 631 transitions, 11628 flow [2022-07-19 21:26:45,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 631 transitions, 10726 flow, removed 351 selfloop flow, removed 42 redundant places. [2022-07-19 21:26:45,267 INFO L242 Difference]: Finished difference. Result has 606 places, 490 transitions, 7277 flow [2022-07-19 21:26:45,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6288, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=7277, PETRI_PLACES=606, PETRI_TRANSITIONS=490} [2022-07-19 21:26:45,268 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 419 predicate places. [2022-07-19 21:26:45,268 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 490 transitions, 7277 flow [2022-07-19 21:26:45,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:45,269 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:45,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:45,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-07-19 21:26:45,269 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:45,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:45,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1804519258, now seen corresponding path program 16 times [2022-07-19 21:26:45,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:45,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610521733] [2022-07-19 21:26:45,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:45,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:45,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:45,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610521733] [2022-07-19 21:26:45,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610521733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:45,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:45,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:45,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583995875] [2022-07-19 21:26:45,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:45,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:45,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:45,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:45,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:45,414 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:45,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 490 transitions, 7277 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:45,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:45,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:45,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:46,901 INFO L129 PetriNetUnfolder]: 706/2657 cut-off events. [2022-07-19 21:26:46,902 INFO L130 PetriNetUnfolder]: For 66377/66468 co-relation queries the response was YES. [2022-07-19 21:26:46,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19945 conditions, 2657 events. 706/2657 cut-off events. For 66377/66468 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 21237 event pairs, 282 based on Foata normal form. 46/2632 useless extension candidates. Maximal degree in co-relation 19701. Up to 924 conditions per place. [2022-07-19 21:26:46,951 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 283 selfloop transitions, 136 changer transitions 74/642 dead transitions. [2022-07-19 21:26:46,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 642 transitions, 11487 flow [2022-07-19 21:26:46,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-19 21:26:46,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-19 21:26:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6065 transitions. [2022-07-19 21:26:46,954 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7600250626566416 [2022-07-19 21:26:46,954 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6065 transitions. [2022-07-19 21:26:46,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6065 transitions. [2022-07-19 21:26:46,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:46,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6065 transitions. [2022-07-19 21:26:46,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.60526315789474) internal successors, (6065), 38 states have internal predecessors, (6065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:46,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:46,962 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:46,962 INFO L186 Difference]: Start difference. First operand has 606 places, 490 transitions, 7277 flow. Second operand 38 states and 6065 transitions. [2022-07-19 21:26:46,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 642 transitions, 11487 flow [2022-07-19 21:26:47,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 642 transitions, 10744 flow, removed 221 selfloop flow, removed 21 redundant places. [2022-07-19 21:26:47,294 INFO L242 Difference]: Finished difference. Result has 625 places, 485 transitions, 6981 flow [2022-07-19 21:26:47,294 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6717, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6981, PETRI_PLACES=625, PETRI_TRANSITIONS=485} [2022-07-19 21:26:47,294 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 438 predicate places. [2022-07-19 21:26:47,295 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 485 transitions, 6981 flow [2022-07-19 21:26:47,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:47,295 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:47,295 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:47,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-07-19 21:26:47,296 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:47,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:47,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1194672816, now seen corresponding path program 17 times [2022-07-19 21:26:47,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:47,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251324312] [2022-07-19 21:26:47,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:47,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:47,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:47,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251324312] [2022-07-19 21:26:47,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251324312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:47,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:47,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:47,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960625195] [2022-07-19 21:26:47,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:47,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:47,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:47,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:47,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:47,433 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:47,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 485 transitions, 6981 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:47,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:47,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:47,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:48,703 INFO L129 PetriNetUnfolder]: 670/2518 cut-off events. [2022-07-19 21:26:48,703 INFO L130 PetriNetUnfolder]: For 62137/62228 co-relation queries the response was YES. [2022-07-19 21:26:48,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18844 conditions, 2518 events. 670/2518 cut-off events. For 62137/62228 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 19732 event pairs, 283 based on Foata normal form. 46/2493 useless extension candidates. Maximal degree in co-relation 18593. Up to 914 conditions per place. [2022-07-19 21:26:48,914 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 263 selfloop transitions, 105 changer transitions 67/584 dead transitions. [2022-07-19 21:26:48,914 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 584 transitions, 9863 flow [2022-07-19 21:26:48,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:26:48,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-19 21:26:48,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4167 transitions. [2022-07-19 21:26:48,916 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7631868131868131 [2022-07-19 21:26:48,916 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4167 transitions. [2022-07-19 21:26:48,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4167 transitions. [2022-07-19 21:26:48,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:48,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4167 transitions. [2022-07-19 21:26:48,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 160.26923076923077) internal successors, (4167), 26 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:48,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:48,922 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:48,922 INFO L186 Difference]: Start difference. First operand has 625 places, 485 transitions, 6981 flow. Second operand 26 states and 4167 transitions. [2022-07-19 21:26:48,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 584 transitions, 9863 flow [2022-07-19 21:26:49,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 584 transitions, 9579 flow, removed 95 selfloop flow, removed 27 redundant places. [2022-07-19 21:26:49,241 INFO L242 Difference]: Finished difference. Result has 604 places, 437 transitions, 5956 flow [2022-07-19 21:26:49,241 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6795, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5956, PETRI_PLACES=604, PETRI_TRANSITIONS=437} [2022-07-19 21:26:49,242 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 417 predicate places. [2022-07-19 21:26:49,242 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 437 transitions, 5956 flow [2022-07-19 21:26:49,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:49,242 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:49,243 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:49,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-07-19 21:26:49,243 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:49,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:49,243 INFO L85 PathProgramCache]: Analyzing trace with hash 867598196, now seen corresponding path program 18 times [2022-07-19 21:26:49,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:49,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495194062] [2022-07-19 21:26:49,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:49,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:49,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:49,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495194062] [2022-07-19 21:26:49,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495194062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:49,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:49,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:49,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488341409] [2022-07-19 21:26:49,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:49,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:49,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:49,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:49,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:49,382 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:49,383 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 437 transitions, 5956 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:49,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:49,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:49,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:50,926 INFO L129 PetriNetUnfolder]: 717/2685 cut-off events. [2022-07-19 21:26:50,926 INFO L130 PetriNetUnfolder]: For 65581/65649 co-relation queries the response was YES. [2022-07-19 21:26:50,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20118 conditions, 2685 events. 717/2685 cut-off events. For 65581/65649 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21455 event pairs, 308 based on Foata normal form. 27/2645 useless extension candidates. Maximal degree in co-relation 19885. Up to 916 conditions per place. [2022-07-19 21:26:50,987 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 270 selfloop transitions, 121 changer transitions 83/623 dead transitions. [2022-07-19 21:26:50,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 623 transitions, 10918 flow [2022-07-19 21:26:50,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-19 21:26:50,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-07-19 21:26:50,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7179 transitions. [2022-07-19 21:26:50,990 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7596825396825397 [2022-07-19 21:26:50,990 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7179 transitions. [2022-07-19 21:26:50,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7179 transitions. [2022-07-19 21:26:50,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:50,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7179 transitions. [2022-07-19 21:26:50,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.53333333333333) internal successors, (7179), 45 states have internal predecessors, (7179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,002 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,002 INFO L186 Difference]: Start difference. First operand has 604 places, 437 transitions, 5956 flow. Second operand 45 states and 7179 transitions. [2022-07-19 21:26:51,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 623 transitions, 10918 flow [2022-07-19 21:26:51,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 623 transitions, 9804 flow, removed 78 selfloop flow, removed 31 redundant places. [2022-07-19 21:26:51,407 INFO L242 Difference]: Finished difference. Result has 604 places, 462 transitions, 6079 flow [2022-07-19 21:26:51,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5252, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=6079, PETRI_PLACES=604, PETRI_TRANSITIONS=462} [2022-07-19 21:26:51,408 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 417 predicate places. [2022-07-19 21:26:51,408 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 462 transitions, 6079 flow [2022-07-19 21:26:51,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,408 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:51,408 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:51,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-07-19 21:26:51,408 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:51,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:51,409 INFO L85 PathProgramCache]: Analyzing trace with hash -439035162, now seen corresponding path program 19 times [2022-07-19 21:26:51,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:51,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355509422] [2022-07-19 21:26:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:51,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:51,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:51,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355509422] [2022-07-19 21:26:51,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355509422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:51,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:51,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:51,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753993789] [2022-07-19 21:26:51,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:51,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:51,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:51,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:51,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:51,535 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:51,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 462 transitions, 6079 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:51,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:51,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:53,121 INFO L129 PetriNetUnfolder]: 711/2663 cut-off events. [2022-07-19 21:26:53,121 INFO L130 PetriNetUnfolder]: For 62676/62744 co-relation queries the response was YES. [2022-07-19 21:26:53,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19593 conditions, 2663 events. 711/2663 cut-off events. For 62676/62744 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21272 event pairs, 301 based on Foata normal form. 27/2622 useless extension candidates. Maximal degree in co-relation 19344. Up to 912 conditions per place. [2022-07-19 21:26:53,171 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 278 selfloop transitions, 119 changer transitions 85/631 dead transitions. [2022-07-19 21:26:53,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 631 transitions, 10776 flow [2022-07-19 21:26:53,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-19 21:26:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-07-19 21:26:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7339 transitions. [2022-07-19 21:26:53,175 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7597308488612836 [2022-07-19 21:26:53,175 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7339 transitions. [2022-07-19 21:26:53,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7339 transitions. [2022-07-19 21:26:53,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:53,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7339 transitions. [2022-07-19 21:26:53,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.54347826086956) internal successors, (7339), 46 states have internal predecessors, (7339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:53,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:53,185 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:53,185 INFO L186 Difference]: Start difference. First operand has 604 places, 462 transitions, 6079 flow. Second operand 46 states and 7339 transitions. [2022-07-19 21:26:53,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 631 transitions, 10776 flow [2022-07-19 21:26:53,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 631 transitions, 10330 flow, removed 180 selfloop flow, removed 30 redundant places. [2022-07-19 21:26:53,642 INFO L242 Difference]: Finished difference. Result has 620 places, 466 transitions, 6385 flow [2022-07-19 21:26:53,643 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5927, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6385, PETRI_PLACES=620, PETRI_TRANSITIONS=466} [2022-07-19 21:26:53,645 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 433 predicate places. [2022-07-19 21:26:53,645 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 466 transitions, 6385 flow [2022-07-19 21:26:53,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:53,645 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:53,646 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:53,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-07-19 21:26:53,646 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:53,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:53,646 INFO L85 PathProgramCache]: Analyzing trace with hash -737920398, now seen corresponding path program 20 times [2022-07-19 21:26:53,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:53,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353589790] [2022-07-19 21:26:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:53,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:53,791 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 21:26:53,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:53,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353589790] [2022-07-19 21:26:53,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353589790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:53,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:53,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:53,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625029555] [2022-07-19 21:26:53,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:53,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:53,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:53,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:53,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:53,793 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:53,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 466 transitions, 6385 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:53,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:53,795 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:53,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:55,328 INFO L129 PetriNetUnfolder]: 729/2707 cut-off events. [2022-07-19 21:26:55,328 INFO L130 PetriNetUnfolder]: For 65708/65776 co-relation queries the response was YES. [2022-07-19 21:26:55,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20308 conditions, 2707 events. 729/2707 cut-off events. For 65708/65776 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21620 event pairs, 313 based on Foata normal form. 27/2661 useless extension candidates. Maximal degree in co-relation 20053. Up to 932 conditions per place. [2022-07-19 21:26:55,394 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 270 selfloop transitions, 134 changer transitions 73/626 dead transitions. [2022-07-19 21:26:55,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 626 transitions, 10868 flow [2022-07-19 21:26:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-19 21:26:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-19 21:26:55,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5917 transitions. [2022-07-19 21:26:55,398 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7615186615186615 [2022-07-19 21:26:55,398 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5917 transitions. [2022-07-19 21:26:55,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5917 transitions. [2022-07-19 21:26:55,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:55,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5917 transitions. [2022-07-19 21:26:55,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.9189189189189) internal successors, (5917), 37 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:55,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:55,546 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:55,546 INFO L186 Difference]: Start difference. First operand has 620 places, 466 transitions, 6385 flow. Second operand 37 states and 5917 transitions. [2022-07-19 21:26:55,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 626 transitions, 10868 flow [2022-07-19 21:26:55,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 626 transitions, 10475 flow, removed 138 selfloop flow, removed 30 redundant places. [2022-07-19 21:26:55,913 INFO L242 Difference]: Finished difference. Result has 617 places, 485 transitions, 7007 flow [2022-07-19 21:26:55,914 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6204, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7007, PETRI_PLACES=617, PETRI_TRANSITIONS=485} [2022-07-19 21:26:55,914 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 430 predicate places. [2022-07-19 21:26:55,914 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 485 transitions, 7007 flow [2022-07-19 21:26:55,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:55,914 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:55,914 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:55,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-07-19 21:26:55,915 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:55,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:55,915 INFO L85 PathProgramCache]: Analyzing trace with hash -843381400, now seen corresponding path program 21 times [2022-07-19 21:26:55,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:55,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368315063] [2022-07-19 21:26:55,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:55,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:56,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:56,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:56,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368315063] [2022-07-19 21:26:56,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368315063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:56,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:56,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:56,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337841150] [2022-07-19 21:26:56,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:56,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:56,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:56,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:56,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:56,054 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:56,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 485 transitions, 7007 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:56,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:56,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:56,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:57,577 INFO L129 PetriNetUnfolder]: 722/2701 cut-off events. [2022-07-19 21:26:57,577 INFO L130 PetriNetUnfolder]: For 66760/66830 co-relation queries the response was YES. [2022-07-19 21:26:57,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20368 conditions, 2701 events. 722/2701 cut-off events. For 66760/66830 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21602 event pairs, 308 based on Foata normal form. 29/2661 useless extension candidates. Maximal degree in co-relation 20117. Up to 928 conditions per place. [2022-07-19 21:26:57,632 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 277 selfloop transitions, 133 changer transitions 72/631 dead transitions. [2022-07-19 21:26:57,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 631 transitions, 11266 flow [2022-07-19 21:26:57,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-19 21:26:57,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-19 21:26:57,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-07-19 21:26:57,635 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-07-19 21:26:57,635 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-07-19 21:26:57,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-07-19 21:26:57,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:57,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-07-19 21:26:57,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:57,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:57,644 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:57,644 INFO L186 Difference]: Start difference. First operand has 617 places, 485 transitions, 7007 flow. Second operand 38 states and 6077 transitions. [2022-07-19 21:26:57,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 631 transitions, 11266 flow [2022-07-19 21:26:58,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 631 transitions, 10916 flow, removed 119 selfloop flow, removed 21 redundant places. [2022-07-19 21:26:58,018 INFO L242 Difference]: Finished difference. Result has 633 places, 491 transitions, 7360 flow [2022-07-19 21:26:58,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6836, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7360, PETRI_PLACES=633, PETRI_TRANSITIONS=491} [2022-07-19 21:26:58,018 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 446 predicate places. [2022-07-19 21:26:58,019 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 491 transitions, 7360 flow [2022-07-19 21:26:58,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:58,019 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:58,019 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:58,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-07-19 21:26:58,019 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:58,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:58,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1580929322, now seen corresponding path program 22 times [2022-07-19 21:26:58,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:58,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866835804] [2022-07-19 21:26:58,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:58,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:58,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:58,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866835804] [2022-07-19 21:26:58,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866835804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:58,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:58,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:26:58,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930549954] [2022-07-19 21:26:58,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:58,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:26:58,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:58,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:26:58,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:26:58,154 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:26:58,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 491 transitions, 7360 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:58,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:58,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:26:58,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:59,705 INFO L129 PetriNetUnfolder]: 718/2702 cut-off events. [2022-07-19 21:26:59,705 INFO L130 PetriNetUnfolder]: For 67678/67745 co-relation queries the response was YES. [2022-07-19 21:26:59,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20487 conditions, 2702 events. 718/2702 cut-off events. For 67678/67745 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21602 event pairs, 301 based on Foata normal form. 27/2662 useless extension candidates. Maximal degree in co-relation 20230. Up to 924 conditions per place. [2022-07-19 21:26:59,757 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 284 selfloop transitions, 129 changer transitions 74/636 dead transitions. [2022-07-19 21:26:59,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 636 transitions, 11623 flow [2022-07-19 21:26:59,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-19 21:26:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-19 21:26:59,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-07-19 21:26:59,760 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-07-19 21:26:59,760 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-07-19 21:26:59,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-07-19 21:26:59,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:59,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-07-19 21:26:59,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:59,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:59,768 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:59,768 INFO L186 Difference]: Start difference. First operand has 633 places, 491 transitions, 7360 flow. Second operand 38 states and 6077 transitions. [2022-07-19 21:26:59,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 636 transitions, 11623 flow [2022-07-19 21:27:00,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 636 transitions, 11299 flow, removed 113 selfloop flow, removed 20 redundant places. [2022-07-19 21:27:00,170 INFO L242 Difference]: Finished difference. Result has 649 places, 496 transitions, 7657 flow [2022-07-19 21:27:00,170 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7176, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7657, PETRI_PLACES=649, PETRI_TRANSITIONS=496} [2022-07-19 21:27:00,170 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 462 predicate places. [2022-07-19 21:27:00,171 INFO L495 AbstractCegarLoop]: Abstraction has has 649 places, 496 transitions, 7657 flow [2022-07-19 21:27:00,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:00,171 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:00,171 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:00,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-07-19 21:27:00,171 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:00,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:00,172 INFO L85 PathProgramCache]: Analyzing trace with hash 89261698, now seen corresponding path program 23 times [2022-07-19 21:27:00,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:00,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735144569] [2022-07-19 21:27:00,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:00,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:00,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:00,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735144569] [2022-07-19 21:27:00,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735144569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:00,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:00,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:27:00,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651669725] [2022-07-19 21:27:00,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:00,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:27:00,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:00,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:27:00,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:27:00,300 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:27:00,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 496 transitions, 7657 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:00,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:00,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:27:00,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:01,684 INFO L129 PetriNetUnfolder]: 704/2650 cut-off events. [2022-07-19 21:27:01,684 INFO L130 PetriNetUnfolder]: For 68189/68258 co-relation queries the response was YES. [2022-07-19 21:27:01,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20265 conditions, 2650 events. 704/2650 cut-off events. For 68189/68258 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 21077 event pairs, 305 based on Foata normal form. 29/2608 useless extension candidates. Maximal degree in co-relation 20002. Up to 928 conditions per place. [2022-07-19 21:27:01,748 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 278 selfloop transitions, 130 changer transitions 62/619 dead transitions. [2022-07-19 21:27:01,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 619 transitions, 11341 flow [2022-07-19 21:27:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-19 21:27:01,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-19 21:27:01,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-07-19 21:27:01,751 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-07-19 21:27:01,751 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-07-19 21:27:01,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-07-19 21:27:01,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:01,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-07-19 21:27:01,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:01,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:01,759 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:01,759 INFO L186 Difference]: Start difference. First operand has 649 places, 496 transitions, 7657 flow. Second operand 30 states and 4815 transitions. [2022-07-19 21:27:01,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 654 places, 619 transitions, 11341 flow [2022-07-19 21:27:02,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 619 transitions, 11025 flow, removed 109 selfloop flow, removed 21 redundant places. [2022-07-19 21:27:02,174 INFO L242 Difference]: Finished difference. Result has 648 places, 501 transitions, 7910 flow [2022-07-19 21:27:02,174 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7451, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7910, PETRI_PLACES=648, PETRI_TRANSITIONS=501} [2022-07-19 21:27:02,174 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 461 predicate places. [2022-07-19 21:27:02,175 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 501 transitions, 7910 flow [2022-07-19 21:27:02,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:02,175 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:02,175 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:02,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-07-19 21:27:02,175 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:02,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:02,176 INFO L85 PathProgramCache]: Analyzing trace with hash 296426346, now seen corresponding path program 24 times [2022-07-19 21:27:02,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:02,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340428261] [2022-07-19 21:27:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:02,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:02,326 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 21:27:02,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:02,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340428261] [2022-07-19 21:27:02,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340428261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:02,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:02,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:27:02,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084851479] [2022-07-19 21:27:02,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:02,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:27:02,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:02,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:27:02,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:27:02,329 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:27:02,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 501 transitions, 7910 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:02,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:02,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:27:02,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:03,613 INFO L129 PetriNetUnfolder]: 712/2675 cut-off events. [2022-07-19 21:27:03,613 INFO L130 PetriNetUnfolder]: For 69909/69992 co-relation queries the response was YES. [2022-07-19 21:27:03,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20611 conditions, 2675 events. 712/2675 cut-off events. For 69909/69992 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21364 event pairs, 304 based on Foata normal form. 35/2641 useless extension candidates. Maximal degree in co-relation 20351. Up to 934 conditions per place. [2022-07-19 21:27:03,680 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 276 selfloop transitions, 144 changer transitions 63/632 dead transitions. [2022-07-19 21:27:03,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 632 transitions, 11882 flow [2022-07-19 21:27:03,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 21:27:03,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-19 21:27:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4655 transitions. [2022-07-19 21:27:03,682 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-07-19 21:27:03,683 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4655 transitions. [2022-07-19 21:27:03,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4655 transitions. [2022-07-19 21:27:03,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:03,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4655 transitions. [2022-07-19 21:27:03,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.51724137931035) internal successors, (4655), 29 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:03,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:03,689 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:03,689 INFO L186 Difference]: Start difference. First operand has 648 places, 501 transitions, 7910 flow. Second operand 29 states and 4655 transitions. [2022-07-19 21:27:03,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 632 transitions, 11882 flow [2022-07-19 21:27:04,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 632 transitions, 11594 flow, removed 87 selfloop flow, removed 14 redundant places. [2022-07-19 21:27:04,139 INFO L242 Difference]: Finished difference. Result has 661 places, 513 transitions, 8415 flow [2022-07-19 21:27:04,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7706, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8415, PETRI_PLACES=661, PETRI_TRANSITIONS=513} [2022-07-19 21:27:04,140 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 474 predicate places. [2022-07-19 21:27:04,141 INFO L495 AbstractCegarLoop]: Abstraction has has 661 places, 513 transitions, 8415 flow [2022-07-19 21:27:04,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:04,141 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:04,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:04,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-07-19 21:27:04,142 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:04,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:04,142 INFO L85 PathProgramCache]: Analyzing trace with hash 676698352, now seen corresponding path program 25 times [2022-07-19 21:27:04,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:04,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169668919] [2022-07-19 21:27:04,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:04,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:04,284 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 21:27:04,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:04,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169668919] [2022-07-19 21:27:04,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169668919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:04,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:04,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:27:04,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234787845] [2022-07-19 21:27:04,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:04,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:27:04,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:04,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:27:04,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:27:04,294 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:27:04,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 513 transitions, 8415 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:04,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:04,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:27:04,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:05,546 INFO L129 PetriNetUnfolder]: 712/2675 cut-off events. [2022-07-19 21:27:05,546 INFO L130 PetriNetUnfolder]: For 70421/70488 co-relation queries the response was YES. [2022-07-19 21:27:05,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20789 conditions, 2675 events. 712/2675 cut-off events. For 70421/70488 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21348 event pairs, 304 based on Foata normal form. 27/2632 useless extension candidates. Maximal degree in co-relation 20525. Up to 937 conditions per place. [2022-07-19 21:27:05,606 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 283 selfloop transitions, 144 changer transitions 61/637 dead transitions. [2022-07-19 21:27:05,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 637 transitions, 12292 flow [2022-07-19 21:27:05,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 21:27:05,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-19 21:27:05,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4655 transitions. [2022-07-19 21:27:05,609 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-07-19 21:27:05,609 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4655 transitions. [2022-07-19 21:27:05,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4655 transitions. [2022-07-19 21:27:05,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:05,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4655 transitions. [2022-07-19 21:27:05,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.51724137931035) internal successors, (4655), 29 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:05,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:05,616 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:05,616 INFO L186 Difference]: Start difference. First operand has 661 places, 513 transitions, 8415 flow. Second operand 29 states and 4655 transitions. [2022-07-19 21:27:05,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 637 transitions, 12292 flow [2022-07-19 21:27:06,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 637 transitions, 11989 flow, removed 71 selfloop flow, removed 13 redundant places. [2022-07-19 21:27:06,151 INFO L242 Difference]: Finished difference. Result has 676 places, 525 transitions, 8946 flow [2022-07-19 21:27:06,151 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8193, PETRI_DIFFERENCE_MINUEND_PLACES=634, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8946, PETRI_PLACES=676, PETRI_TRANSITIONS=525} [2022-07-19 21:27:06,152 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 489 predicate places. [2022-07-19 21:27:06,152 INFO L495 AbstractCegarLoop]: Abstraction has has 676 places, 525 transitions, 8946 flow [2022-07-19 21:27:06,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:06,152 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:06,153 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:06,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-07-19 21:27:06,153 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:06,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:06,153 INFO L85 PathProgramCache]: Analyzing trace with hash -704180468, now seen corresponding path program 26 times [2022-07-19 21:27:06,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:06,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347842512] [2022-07-19 21:27:06,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:06,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:06,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:06,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:06,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347842512] [2022-07-19 21:27:06,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347842512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:06,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:06,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:27:06,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99086124] [2022-07-19 21:27:06,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:06,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:27:06,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:06,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:27:06,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:27:06,305 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:27:06,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 525 transitions, 8946 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:06,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:06,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:27:06,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:07,665 INFO L129 PetriNetUnfolder]: 696/2642 cut-off events. [2022-07-19 21:27:07,665 INFO L130 PetriNetUnfolder]: For 68838/68906 co-relation queries the response was YES. [2022-07-19 21:27:07,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20396 conditions, 2642 events. 696/2642 cut-off events. For 68838/68906 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 21046 event pairs, 306 based on Foata normal form. 27/2601 useless extension candidates. Maximal degree in co-relation 20126. Up to 930 conditions per place. [2022-07-19 21:27:07,730 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 282 selfloop transitions, 125 changer transitions 66/622 dead transitions. [2022-07-19 21:27:07,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 622 transitions, 11884 flow [2022-07-19 21:27:07,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-19 21:27:07,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-19 21:27:07,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4806 transitions. [2022-07-19 21:27:07,734 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7628571428571429 [2022-07-19 21:27:07,734 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4806 transitions. [2022-07-19 21:27:07,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4806 transitions. [2022-07-19 21:27:07,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:07,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4806 transitions. [2022-07-19 21:27:07,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.2) internal successors, (4806), 30 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:07,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:07,742 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:07,742 INFO L186 Difference]: Start difference. First operand has 676 places, 525 transitions, 8946 flow. Second operand 30 states and 4806 transitions. [2022-07-19 21:27:07,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 622 transitions, 11884 flow [2022-07-19 21:27:08,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 622 transitions, 11504 flow, removed 74 selfloop flow, removed 12 redundant places. [2022-07-19 21:27:08,249 INFO L242 Difference]: Finished difference. Result has 690 places, 505 transitions, 8281 flow [2022-07-19 21:27:08,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8592, PETRI_DIFFERENCE_MINUEND_PLACES=650, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8281, PETRI_PLACES=690, PETRI_TRANSITIONS=505} [2022-07-19 21:27:08,250 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 503 predicate places. [2022-07-19 21:27:08,250 INFO L495 AbstractCegarLoop]: Abstraction has has 690 places, 505 transitions, 8281 flow [2022-07-19 21:27:08,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:08,251 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:08,251 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:08,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-07-19 21:27:08,251 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:08,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:08,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1654180704, now seen corresponding path program 27 times [2022-07-19 21:27:08,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:08,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225357671] [2022-07-19 21:27:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:08,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:08,386 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 21:27:08,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:08,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225357671] [2022-07-19 21:27:08,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225357671] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:08,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:08,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:27:08,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279482880] [2022-07-19 21:27:08,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:08,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:27:08,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:08,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:27:08,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:27:08,389 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:27:08,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 505 transitions, 8281 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:08,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:08,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:27:08,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:09,775 INFO L129 PetriNetUnfolder]: 688/2618 cut-off events. [2022-07-19 21:27:09,776 INFO L130 PetriNetUnfolder]: For 69500/69583 co-relation queries the response was YES. [2022-07-19 21:27:09,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20209 conditions, 2618 events. 688/2618 cut-off events. For 69500/69583 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 20787 event pairs, 304 based on Foata normal form. 35/2584 useless extension candidates. Maximal degree in co-relation 19936. Up to 924 conditions per place. [2022-07-19 21:27:09,845 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 285 selfloop transitions, 125 changer transitions 64/623 dead transitions. [2022-07-19 21:27:09,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 623 transitions, 11927 flow [2022-07-19 21:27:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-19 21:27:09,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-19 21:27:09,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-07-19 21:27:09,849 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-07-19 21:27:09,849 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-07-19 21:27:09,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-07-19 21:27:09,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:09,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-07-19 21:27:09,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,857 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,857 INFO L186 Difference]: Start difference. First operand has 690 places, 505 transitions, 8281 flow. Second operand 30 states and 4815 transitions. [2022-07-19 21:27:09,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 623 transitions, 11927 flow [2022-07-19 21:27:10,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 660 places, 623 transitions, 11379 flow, removed 69 selfloop flow, removed 32 redundant places. [2022-07-19 21:27:10,414 INFO L242 Difference]: Finished difference. Result has 671 places, 507 transitions, 8220 flow [2022-07-19 21:27:10,414 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7878, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8220, PETRI_PLACES=671, PETRI_TRANSITIONS=507} [2022-07-19 21:27:10,416 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 484 predicate places. [2022-07-19 21:27:10,416 INFO L495 AbstractCegarLoop]: Abstraction has has 671 places, 507 transitions, 8220 flow [2022-07-19 21:27:10,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,416 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:10,416 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:10,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-07-19 21:27:10,417 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:10,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:10,418 INFO L85 PathProgramCache]: Analyzing trace with hash -414257954, now seen corresponding path program 28 times [2022-07-19 21:27:10,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:10,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755193866] [2022-07-19 21:27:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:10,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:10,556 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 21:27:10,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:10,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755193866] [2022-07-19 21:27:10,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755193866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:10,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:10,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:27:10,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607358954] [2022-07-19 21:27:10,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:10,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:27:10,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:10,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:27:10,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:27:10,560 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:27:10,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 507 transitions, 8220 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:10,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:27:10,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:11,790 INFO L129 PetriNetUnfolder]: 670/2551 cut-off events. [2022-07-19 21:27:11,790 INFO L130 PetriNetUnfolder]: For 64866/64947 co-relation queries the response was YES. [2022-07-19 21:27:11,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19431 conditions, 2551 events. 670/2551 cut-off events. For 64866/64947 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 20046 event pairs, 300 based on Foata normal form. 33/2516 useless extension candidates. Maximal degree in co-relation 19166. Up to 916 conditions per place. [2022-07-19 21:27:11,859 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 279 selfloop transitions, 105 changer transitions 64/597 dead transitions. [2022-07-19 21:27:11,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 597 transitions, 10969 flow [2022-07-19 21:27:11,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 21:27:11,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-19 21:27:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4490 transitions. [2022-07-19 21:27:11,862 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7636054421768708 [2022-07-19 21:27:11,862 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4490 transitions. [2022-07-19 21:27:11,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4490 transitions. [2022-07-19 21:27:11,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:11,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4490 transitions. [2022-07-19 21:27:11,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.35714285714286) internal successors, (4490), 28 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,869 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,869 INFO L186 Difference]: Start difference. First operand has 671 places, 507 transitions, 8220 flow. Second operand 28 states and 4490 transitions. [2022-07-19 21:27:11,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 597 transitions, 10969 flow [2022-07-19 21:27:12,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 597 transitions, 10713 flow, removed 75 selfloop flow, removed 14 redundant places. [2022-07-19 21:27:12,325 INFO L242 Difference]: Finished difference. Result has 678 places, 482 transitions, 7586 flow [2022-07-19 21:27:12,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8003, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7586, PETRI_PLACES=678, PETRI_TRANSITIONS=482} [2022-07-19 21:27:12,325 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 491 predicate places. [2022-07-19 21:27:12,326 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 482 transitions, 7586 flow [2022-07-19 21:27:12,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,326 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:12,326 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:12,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-07-19 21:27:12,326 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:12,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:12,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1984213508, now seen corresponding path program 29 times [2022-07-19 21:27:12,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:12,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940317998] [2022-07-19 21:27:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:12,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:12,454 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 21:27:12,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:12,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940317998] [2022-07-19 21:27:12,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940317998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:12,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:12,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:27:12,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136680003] [2022-07-19 21:27:12,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:12,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:27:12,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:12,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:27:12,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:27:12,457 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:27:12,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 482 transitions, 7586 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:12,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:27:12,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:13,754 INFO L129 PetriNetUnfolder]: 648/2473 cut-off events. [2022-07-19 21:27:13,754 INFO L130 PetriNetUnfolder]: For 62836/62903 co-relation queries the response was YES. [2022-07-19 21:27:13,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18733 conditions, 2473 events. 648/2473 cut-off events. For 62836/62903 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 19242 event pairs, 298 based on Foata normal form. 27/2432 useless extension candidates. Maximal degree in co-relation 18469. Up to 904 conditions per place. [2022-07-19 21:27:13,816 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 89 changer transitions 66/561 dead transitions. [2022-07-19 21:27:13,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 561 transitions, 9992 flow [2022-07-19 21:27:13,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 21:27:13,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-19 21:27:13,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4330 transitions. [2022-07-19 21:27:13,819 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.763668430335097 [2022-07-19 21:27:13,819 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4330 transitions. [2022-07-19 21:27:13,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4330 transitions. [2022-07-19 21:27:13,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:13,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4330 transitions. [2022-07-19 21:27:13,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.37037037037038) internal successors, (4330), 27 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,825 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,825 INFO L186 Difference]: Start difference. First operand has 678 places, 482 transitions, 7586 flow. Second operand 27 states and 4330 transitions. [2022-07-19 21:27:13,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 561 transitions, 9992 flow [2022-07-19 21:27:14,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 561 transitions, 9375 flow, removed 37 selfloop flow, removed 34 redundant places. [2022-07-19 21:27:14,242 INFO L242 Difference]: Finished difference. Result has 644 places, 445 transitions, 6361 flow [2022-07-19 21:27:14,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7041, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6361, PETRI_PLACES=644, PETRI_TRANSITIONS=445} [2022-07-19 21:27:14,243 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 457 predicate places. [2022-07-19 21:27:14,243 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 445 transitions, 6361 flow [2022-07-19 21:27:14,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,243 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:14,243 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:14,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-07-19 21:27:14,243 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:14,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:14,244 INFO L85 PathProgramCache]: Analyzing trace with hash 624038396, now seen corresponding path program 30 times [2022-07-19 21:27:14,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:14,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294368560] [2022-07-19 21:27:14,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:14,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:14,400 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 21:27:14,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:14,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294368560] [2022-07-19 21:27:14,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294368560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:14,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:14,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:27:14,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719314132] [2022-07-19 21:27:14,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:14,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:27:14,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:14,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:27:14,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:27:14,403 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:27:14,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 445 transitions, 6361 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:14,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:27:14,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:15,691 INFO L129 PetriNetUnfolder]: 620/2367 cut-off events. [2022-07-19 21:27:15,691 INFO L130 PetriNetUnfolder]: For 56583/56653 co-relation queries the response was YES. [2022-07-19 21:27:15,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17489 conditions, 2367 events. 620/2367 cut-off events. For 56583/56653 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 18081 event pairs, 294 based on Foata normal form. 29/2331 useless extension candidates. Maximal degree in co-relation 17237. Up to 886 conditions per place. [2022-07-19 21:27:15,750 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 227 selfloop transitions, 67 changer transitions 68/511 dead transitions. [2022-07-19 21:27:15,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 511 transitions, 8308 flow [2022-07-19 21:27:15,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-19 21:27:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-19 21:27:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4783 transitions. [2022-07-19 21:27:15,754 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7592063492063492 [2022-07-19 21:27:15,755 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4783 transitions. [2022-07-19 21:27:15,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4783 transitions. [2022-07-19 21:27:15,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:15,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4783 transitions. [2022-07-19 21:27:15,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.43333333333334) internal successors, (4783), 30 states have internal predecessors, (4783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:15,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:15,762 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:15,762 INFO L186 Difference]: Start difference. First operand has 644 places, 445 transitions, 6361 flow. Second operand 30 states and 4783 transitions. [2022-07-19 21:27:15,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 511 transitions, 8308 flow [2022-07-19 21:27:16,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 511 transitions, 7673 flow, removed 36 selfloop flow, removed 38 redundant places. [2022-07-19 21:27:16,107 INFO L242 Difference]: Finished difference. Result has 600 places, 394 transitions, 4823 flow [2022-07-19 21:27:16,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5771, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4823, PETRI_PLACES=600, PETRI_TRANSITIONS=394} [2022-07-19 21:27:16,108 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 413 predicate places. [2022-07-19 21:27:16,108 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 394 transitions, 4823 flow [2022-07-19 21:27:16,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,108 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:16,108 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:16,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-07-19 21:27:16,109 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:16,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:16,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1193091862, now seen corresponding path program 31 times [2022-07-19 21:27:16,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:16,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123079943] [2022-07-19 21:27:16,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:16,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:16,237 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 21:27:16,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:16,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123079943] [2022-07-19 21:27:16,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123079943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:16,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:16,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:27:16,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034639574] [2022-07-19 21:27:16,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:16,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:27:16,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:16,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:27:16,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:27:16,240 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:27:16,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 394 transitions, 4823 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:16,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:27:16,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:17,662 INFO L129 PetriNetUnfolder]: 643/2444 cut-off events. [2022-07-19 21:27:17,662 INFO L130 PetriNetUnfolder]: For 56001/56051 co-relation queries the response was YES. [2022-07-19 21:27:17,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17725 conditions, 2444 events. 643/2444 cut-off events. For 56001/56051 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 18806 event pairs, 306 based on Foata normal form. 13/2390 useless extension candidates. Maximal degree in co-relation 17489. Up to 886 conditions per place. [2022-07-19 21:27:17,723 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 233 selfloop transitions, 92 changer transitions 68/542 dead transitions. [2022-07-19 21:27:17,723 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 542 transitions, 8895 flow [2022-07-19 21:27:17,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-19 21:27:17,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-19 21:27:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6072 transitions. [2022-07-19 21:27:17,727 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7609022556390977 [2022-07-19 21:27:17,727 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6072 transitions. [2022-07-19 21:27:17,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6072 transitions. [2022-07-19 21:27:17,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:17,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6072 transitions. [2022-07-19 21:27:17,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.78947368421052) internal successors, (6072), 38 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,736 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:17,736 INFO L186 Difference]: Start difference. First operand has 600 places, 394 transitions, 4823 flow. Second operand 38 states and 6072 transitions. [2022-07-19 21:27:17,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 542 transitions, 8895 flow [2022-07-19 21:27:18,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 542 transitions, 8008 flow, removed 66 selfloop flow, removed 39 redundant places. [2022-07-19 21:27:18,030 INFO L242 Difference]: Finished difference. Result has 561 places, 414 transitions, 5038 flow [2022-07-19 21:27:18,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4245, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5038, PETRI_PLACES=561, PETRI_TRANSITIONS=414} [2022-07-19 21:27:18,031 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 374 predicate places. [2022-07-19 21:27:18,031 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 414 transitions, 5038 flow [2022-07-19 21:27:18,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,031 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:18,032 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:18,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-07-19 21:27:18,032 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:18,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:18,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1145726642, now seen corresponding path program 32 times [2022-07-19 21:27:18,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:18,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103910507] [2022-07-19 21:27:18,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:18,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:18,188 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 21:27:18,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:18,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103910507] [2022-07-19 21:27:18,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103910507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:18,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:18,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:27:18,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502269917] [2022-07-19 21:27:18,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:18,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:27:18,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:18,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:27:18,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:27:18,192 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-19 21:27:18,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 414 transitions, 5038 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:18,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-19 21:27:18,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand