./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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-simpl-str-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:42:03,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:42:03,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:42:03,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:42:03,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:42:03,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:42:03,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:42:03,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:42:03,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:42:03,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:42:03,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:42:03,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:42:03,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:42:03,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:42:03,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:42:03,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:42:03,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:42:03,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:42:03,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:42:03,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:42:03,999 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:42:04,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:42:04,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:42:04,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:42:04,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:42:04,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:42:04,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:42:04,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:42:04,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:42:04,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:42:04,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:42:04,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:42:04,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:42:04,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:42:04,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:42:04,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:42:04,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:42:04,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:42:04,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:42:04,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:42:04,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:42:04,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:42:04,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:42:04,033 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:42:04,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:42:04,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:42:04,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:42:04,034 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:42:04,034 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:42:04,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:42:04,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:42:04,039 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:42:04,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:42:04,040 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:42:04,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:42:04,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:42:04,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:42:04,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:42:04,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:42:04,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:42:04,041 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:42:04,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:42:04,042 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:42:04,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:42:04,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:42:04,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:42:04,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:42:04,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:42:04,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:42:04,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:42:04,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:42:04,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:42:04,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:42:04,044 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:42:04,045 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:42:04,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:42:04,045 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 [2022-07-22 21:42:04,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:42:04,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:42:04,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:42:04,314 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:42:04,314 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:42:04,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-07-22 21:42:04,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acf84a761/323ddf50d8d144e395107d0830be7979/FLAGcbbe24c95 [2022-07-22 21:42:04,829 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:42:04,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-07-22 21:42:04,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acf84a761/323ddf50d8d144e395107d0830be7979/FLAGcbbe24c95 [2022-07-22 21:42:05,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acf84a761/323ddf50d8d144e395107d0830be7979 [2022-07-22 21:42:05,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:42:05,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:42:05,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:42:05,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:42:05,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:42:05,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:42:05" (1/1) ... [2022-07-22 21:42:05,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de8f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:05, skipping insertion in model container [2022-07-22 21:42:05,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:42:05" (1/1) ... [2022-07-22 21:42:05,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:42:05,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:42:05,472 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-simpl-str-subst.wvr.c[2575,2588] [2022-07-22 21:42:05,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:42:05,489 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:42:05,507 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-simpl-str-subst.wvr.c[2575,2588] [2022-07-22 21:42:05,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:42:05,522 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:42:05,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:05 WrapperNode [2022-07-22 21:42:05,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:42:05,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:42:05,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:42:05,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:42:05,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:05" (1/1) ... [2022-07-22 21:42:05,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:05" (1/1) ... [2022-07-22 21:42:05,582 INFO L137 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 179 [2022-07-22 21:42:05,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:42:05,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:42:05,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:42:05,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:42:05,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:05" (1/1) ... [2022-07-22 21:42:05,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:05" (1/1) ... [2022-07-22 21:42:05,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:05" (1/1) ... [2022-07-22 21:42:05,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:05" (1/1) ... [2022-07-22 21:42:05,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:05" (1/1) ... [2022-07-22 21:42:05,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:05" (1/1) ... [2022-07-22 21:42:05,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:05" (1/1) ... [2022-07-22 21:42:05,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:42:05,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:42:05,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:42:05,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:42:05,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:05" (1/1) ... [2022-07-22 21:42:05,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:42:05,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:42:05,666 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) [2022-07-22 21:42:05,668 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 [2022-07-22 21:42:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:42:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:42:05,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:42:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:42:05,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:42:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 21:42:05,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 21:42:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:42:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:42:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:42:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:42:05,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:42:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:42:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:42:05,701 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:42:05,780 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:42:05,782 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:42:06,120 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:42:06,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:42:06,131 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:42:06,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:42:06 BoogieIcfgContainer [2022-07-22 21:42:06,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:42:06,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:42:06,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:42:06,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:42:06,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:42:05" (1/3) ... [2022-07-22 21:42:06,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c945b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:42:06, skipping insertion in model container [2022-07-22 21:42:06,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:05" (2/3) ... [2022-07-22 21:42:06,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c945b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:42:06, skipping insertion in model container [2022-07-22 21:42:06,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:42:06" (3/3) ... [2022-07-22 21:42:06,142 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2022-07-22 21:42:06,148 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:42:06,157 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:42:06,157 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:42:06,158 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:42:06,272 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-22 21:42:06,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 228 places, 235 transitions, 494 flow [2022-07-22 21:42:06,404 INFO L129 PetriNetUnfolder]: 17/232 cut-off events. [2022-07-22 21:42:06,405 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:42:06,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 232 events. 17/232 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 510 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-07-22 21:42:06,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 235 transitions, 494 flow [2022-07-22 21:42:06,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 221 transitions, 460 flow [2022-07-22 21:42:06,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:42:06,455 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@357c1508, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@57491fc [2022-07-22 21:42:06,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:42:06,519 INFO L129 PetriNetUnfolder]: 17/220 cut-off events. [2022-07-22 21:42:06,519 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:42:06,519 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:06,520 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:06,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:06,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:06,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1711885606, now seen corresponding path program 1 times [2022-07-22 21:42:06,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:06,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688858126] [2022-07-22 21:42:06,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:06,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:06,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:06,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688858126] [2022-07-22 21:42:06,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688858126] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:06,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:06,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:42:06,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005923953] [2022-07-22 21:42:06,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:06,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:42:06,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:06,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:42:06,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:42:06,874 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 235 [2022-07-22 21:42:06,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 221 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:06,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:06,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 235 [2022-07-22 21:42:06,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:07,101 INFO L129 PetriNetUnfolder]: 84/1006 cut-off events. [2022-07-22 21:42:07,101 INFO L130 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-07-22 21:42:07,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 1006 events. 84/1006 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7154 event pairs, 22 based on Foata normal form. 68/984 useless extension candidates. Maximal degree in co-relation 999. Up to 73 conditions per place. [2022-07-22 21:42:07,118 INFO L132 encePairwiseOnDemand]: 219/235 looper letters, 20 selfloop transitions, 4 changer transitions 2/221 dead transitions. [2022-07-22 21:42:07,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 221 transitions, 520 flow [2022-07-22 21:42:07,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:42:07,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:42:07,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2022-07-22 21:42:07,139 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.950354609929078 [2022-07-22 21:42:07,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2022-07-22 21:42:07,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2022-07-22 21:42:07,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:07,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2022-07-22 21:42:07,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,167 INFO L186 Difference]: Start difference. First operand has 214 places, 221 transitions, 460 flow. Second operand 3 states and 670 transitions. [2022-07-22 21:42:07,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 221 transitions, 520 flow [2022-07-22 21:42:07,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 221 transitions, 500 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-22 21:42:07,179 INFO L242 Difference]: Finished difference. Result has 212 places, 215 transitions, 468 flow [2022-07-22 21:42:07,182 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=212, PETRI_TRANSITIONS=215} [2022-07-22 21:42:07,186 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, -2 predicate places. [2022-07-22 21:42:07,186 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 215 transitions, 468 flow [2022-07-22 21:42:07,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,188 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:07,188 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:07,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:42:07,188 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:07,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:07,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1537026462, now seen corresponding path program 1 times [2022-07-22 21:42:07,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:07,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025446196] [2022-07-22 21:42:07,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:07,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:07,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:07,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025446196] [2022-07-22 21:42:07,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025446196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:07,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:07,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:42:07,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688970083] [2022-07-22 21:42:07,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:07,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:42:07,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:07,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:42:07,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:42:07,335 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 235 [2022-07-22 21:42:07,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 215 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:07,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 235 [2022-07-22 21:42:07,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:07,632 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([680] thread3EXIT-->L77-2: Formula: (and (= v_thread3Thread1of1ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem27#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} OutVars{thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} AuxVars[] AssignedVars[][207], [233#(not (= ~length_4~0 0)), 138#L77-2true, Black: 231#true, 239#(not (= ~length_2~0 0))]) [2022-07-22 21:42:07,633 INFO L384 tUnfolder$Statistics]: this new event has 123 ancestors and is cut-off event [2022-07-22 21:42:07,633 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-22 21:42:07,633 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-22 21:42:07,633 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-22 21:42:07,634 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([680] thread3EXIT-->L77-2: Formula: (and (= v_thread3Thread1of1ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem27#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} OutVars{thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} AuxVars[] AssignedVars[][207], [233#(not (= ~length_4~0 0)), 138#L77-2true, Black: 231#true, 239#(not (= ~length_2~0 0))]) [2022-07-22 21:42:07,634 INFO L384 tUnfolder$Statistics]: this new event has 123 ancestors and is cut-off event [2022-07-22 21:42:07,634 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-22 21:42:07,634 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-22 21:42:07,635 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-22 21:42:07,635 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-07-22 21:42:07,637 INFO L382 tUnfolder$Statistics]: inserting event number 6 for the transition-marking pair ([680] thread3EXIT-->L77-2: Formula: (and (= v_thread3Thread1of1ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem27#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} OutVars{thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} AuxVars[] AssignedVars[][207], [233#(not (= ~length_4~0 0)), 138#L77-2true, Black: 231#true, 239#(not (= ~length_2~0 0))]) [2022-07-22 21:42:07,637 INFO L384 tUnfolder$Statistics]: this new event has 101 ancestors and is not cut-off event [2022-07-22 21:42:07,638 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is not cut-off event [2022-07-22 21:42:07,638 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-07-22 21:42:07,638 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-07-22 21:42:07,638 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-07-22 21:42:07,638 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is not cut-off event [2022-07-22 21:42:07,647 INFO L129 PetriNetUnfolder]: 96/2144 cut-off events. [2022-07-22 21:42:07,647 INFO L130 PetriNetUnfolder]: For 85/89 co-relation queries the response was YES. [2022-07-22 21:42:07,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2433 conditions, 2144 events. 96/2144 cut-off events. For 85/89 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21163 event pairs, 28 based on Foata normal form. 0/1986 useless extension candidates. Maximal degree in co-relation 1296. Up to 89 conditions per place. [2022-07-22 21:42:07,669 INFO L132 encePairwiseOnDemand]: 229/235 looper letters, 19 selfloop transitions, 3 changer transitions 0/223 dead transitions. [2022-07-22 21:42:07,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 223 transitions, 533 flow [2022-07-22 21:42:07,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:42:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:42:07,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2022-07-22 21:42:07,673 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9375886524822695 [2022-07-22 21:42:07,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2022-07-22 21:42:07,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2022-07-22 21:42:07,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:07,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2022-07-22 21:42:07,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,678 INFO L186 Difference]: Start difference. First operand has 212 places, 215 transitions, 468 flow. Second operand 3 states and 661 transitions. [2022-07-22 21:42:07,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 223 transitions, 533 flow [2022-07-22 21:42:07,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 223 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:42:07,687 INFO L242 Difference]: Finished difference. Result has 213 places, 218 transitions, 494 flow [2022-07-22 21:42:07,688 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=494, PETRI_PLACES=213, PETRI_TRANSITIONS=218} [2022-07-22 21:42:07,688 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, -1 predicate places. [2022-07-22 21:42:07,689 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 218 transitions, 494 flow [2022-07-22 21:42:07,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,689 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:07,690 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:07,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:42:07,690 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:07,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:07,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1414919130, now seen corresponding path program 2 times [2022-07-22 21:42:07,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:07,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793684461] [2022-07-22 21:42:07,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:07,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:07,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:07,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793684461] [2022-07-22 21:42:07,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793684461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:07,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:07,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:42:07,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446872061] [2022-07-22 21:42:07,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:07,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:42:07,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:07,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:42:07,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:42:07,751 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 235 [2022-07-22 21:42:07,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 218 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:07,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:07,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 235 [2022-07-22 21:42:07,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:08,038 INFO L129 PetriNetUnfolder]: 80/1827 cut-off events. [2022-07-22 21:42:08,038 INFO L130 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-07-22 21:42:08,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2107 conditions, 1827 events. 80/1827 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16400 event pairs, 28 based on Foata normal form. 7/1684 useless extension candidates. Maximal degree in co-relation 1309. Up to 78 conditions per place. [2022-07-22 21:42:08,053 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 20 selfloop transitions, 5 changer transitions 0/226 dead transitions. [2022-07-22 21:42:08,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 226 transitions, 571 flow [2022-07-22 21:42:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:42:08,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:42:08,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2022-07-22 21:42:08,055 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9375886524822695 [2022-07-22 21:42:08,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2022-07-22 21:42:08,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2022-07-22 21:42:08,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:08,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2022-07-22 21:42:08,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,060 INFO L186 Difference]: Start difference. First operand has 213 places, 218 transitions, 494 flow. Second operand 3 states and 661 transitions. [2022-07-22 21:42:08,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 226 transitions, 571 flow [2022-07-22 21:42:08,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 226 transitions, 568 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:42:08,066 INFO L242 Difference]: Finished difference. Result has 216 places, 221 transitions, 535 flow [2022-07-22 21:42:08,066 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=535, PETRI_PLACES=216, PETRI_TRANSITIONS=221} [2022-07-22 21:42:08,067 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 2 predicate places. [2022-07-22 21:42:08,067 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 221 transitions, 535 flow [2022-07-22 21:42:08,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,068 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:08,068 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:08,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:42:08,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:08,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:08,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1873849952, now seen corresponding path program 1 times [2022-07-22 21:42:08,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:08,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844538694] [2022-07-22 21:42:08,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:08,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:08,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:08,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844538694] [2022-07-22 21:42:08,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844538694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:08,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:08,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:42:08,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632806104] [2022-07-22 21:42:08,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:08,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:42:08,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:08,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:42:08,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:42:08,126 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 235 [2022-07-22 21:42:08,127 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 221 transitions, 535 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:08,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 235 [2022-07-22 21:42:08,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:08,525 INFO L129 PetriNetUnfolder]: 96/3140 cut-off events. [2022-07-22 21:42:08,527 INFO L130 PetriNetUnfolder]: For 98/131 co-relation queries the response was YES. [2022-07-22 21:42:08,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 3140 events. 96/3140 cut-off events. For 98/131 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 34386 event pairs, 33 based on Foata normal form. 0/2910 useless extension candidates. Maximal degree in co-relation 2319. Up to 121 conditions per place. [2022-07-22 21:42:08,555 INFO L132 encePairwiseOnDemand]: 231/235 looper letters, 17 selfloop transitions, 2 changer transitions 0/228 dead transitions. [2022-07-22 21:42:08,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 228 transitions, 592 flow [2022-07-22 21:42:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:42:08,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:42:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-07-22 21:42:08,563 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9404255319148936 [2022-07-22 21:42:08,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-07-22 21:42:08,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-07-22 21:42:08,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:08,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-07-22 21:42:08,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,567 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,568 INFO L186 Difference]: Start difference. First operand has 216 places, 221 transitions, 535 flow. Second operand 3 states and 663 transitions. [2022-07-22 21:42:08,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 228 transitions, 592 flow [2022-07-22 21:42:08,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 228 transitions, 576 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:08,574 INFO L242 Difference]: Finished difference. Result has 218 places, 223 transitions, 539 flow [2022-07-22 21:42:08,575 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=539, PETRI_PLACES=218, PETRI_TRANSITIONS=223} [2022-07-22 21:42:08,576 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 4 predicate places. [2022-07-22 21:42:08,577 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 223 transitions, 539 flow [2022-07-22 21:42:08,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,577 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:08,578 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:08,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:42:08,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:08,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:08,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1926563626, now seen corresponding path program 1 times [2022-07-22 21:42:08,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:08,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581058098] [2022-07-22 21:42:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:08,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:08,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:08,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581058098] [2022-07-22 21:42:08,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581058098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:08,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:08,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:42:08,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975594103] [2022-07-22 21:42:08,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:08,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:42:08,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:08,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:42:08,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:42:08,691 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 235 [2022-07-22 21:42:08,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 223 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:08,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:08,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 235 [2022-07-22 21:42:08,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:09,029 INFO L129 PetriNetUnfolder]: 130/2353 cut-off events. [2022-07-22 21:42:09,029 INFO L130 PetriNetUnfolder]: For 139/233 co-relation queries the response was YES. [2022-07-22 21:42:09,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2891 conditions, 2353 events. 130/2353 cut-off events. For 139/233 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21882 event pairs, 33 based on Foata normal form. 4/2183 useless extension candidates. Maximal degree in co-relation 1425. Up to 137 conditions per place. [2022-07-22 21:42:09,047 INFO L132 encePairwiseOnDemand]: 225/235 looper letters, 22 selfloop transitions, 6 changer transitions 0/231 dead transitions. [2022-07-22 21:42:09,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 231 transitions, 623 flow [2022-07-22 21:42:09,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:42:09,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:42:09,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2022-07-22 21:42:09,050 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-07-22 21:42:09,050 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2022-07-22 21:42:09,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2022-07-22 21:42:09,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:09,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2022-07-22 21:42:09,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,055 INFO L186 Difference]: Start difference. First operand has 218 places, 223 transitions, 539 flow. Second operand 3 states and 658 transitions. [2022-07-22 21:42:09,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 231 transitions, 623 flow [2022-07-22 21:42:09,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 231 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:42:09,060 INFO L242 Difference]: Finished difference. Result has 221 places, 227 transitions, 593 flow [2022-07-22 21:42:09,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=593, PETRI_PLACES=221, PETRI_TRANSITIONS=227} [2022-07-22 21:42:09,062 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 7 predicate places. [2022-07-22 21:42:09,062 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 227 transitions, 593 flow [2022-07-22 21:42:09,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,063 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:09,063 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:09,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:42:09,063 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:09,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:09,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1437708392, now seen corresponding path program 1 times [2022-07-22 21:42:09,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:09,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956468886] [2022-07-22 21:42:09,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:09,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:09,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:09,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956468886] [2022-07-22 21:42:09,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956468886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:09,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:09,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:42:09,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595481359] [2022-07-22 21:42:09,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:09,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:42:09,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:09,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:42:09,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:42:09,181 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 235 [2022-07-22 21:42:09,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 227 transitions, 593 flow. Second operand has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:09,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 235 [2022-07-22 21:42:09,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:09,572 INFO L129 PetriNetUnfolder]: 114/2103 cut-off events. [2022-07-22 21:42:09,573 INFO L130 PetriNetUnfolder]: For 155/421 co-relation queries the response was YES. [2022-07-22 21:42:09,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2760 conditions, 2103 events. 114/2103 cut-off events. For 155/421 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 19801 event pairs, 40 based on Foata normal form. 5/1993 useless extension candidates. Maximal degree in co-relation 1946. Up to 199 conditions per place. [2022-07-22 21:42:09,591 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 21 selfloop transitions, 0 changer transitions 22/247 dead transitions. [2022-07-22 21:42:09,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 247 transitions, 730 flow [2022-07-22 21:42:09,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:42:09,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:42:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1861 transitions. [2022-07-22 21:42:09,596 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8799054373522459 [2022-07-22 21:42:09,596 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1861 transitions. [2022-07-22 21:42:09,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1861 transitions. [2022-07-22 21:42:09,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:09,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1861 transitions. [2022-07-22 21:42:09,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 206.77777777777777) internal successors, (1861), 9 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,607 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,607 INFO L186 Difference]: Start difference. First operand has 221 places, 227 transitions, 593 flow. Second operand 9 states and 1861 transitions. [2022-07-22 21:42:09,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 247 transitions, 730 flow [2022-07-22 21:42:09,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 247 transitions, 710 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:09,613 INFO L242 Difference]: Finished difference. Result has 234 places, 225 transitions, 579 flow [2022-07-22 21:42:09,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=579, PETRI_PLACES=234, PETRI_TRANSITIONS=225} [2022-07-22 21:42:09,615 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 20 predicate places. [2022-07-22 21:42:09,615 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 225 transitions, 579 flow [2022-07-22 21:42:09,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,616 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:09,616 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:09,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:42:09,617 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:09,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:09,618 INFO L85 PathProgramCache]: Analyzing trace with hash 169299696, now seen corresponding path program 1 times [2022-07-22 21:42:09,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:09,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895810632] [2022-07-22 21:42:09,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:09,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:09,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:09,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895810632] [2022-07-22 21:42:09,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895810632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:09,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:09,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:42:09,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75175594] [2022-07-22 21:42:09,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:09,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:42:09,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:09,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:42:09,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:42:09,654 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 235 [2022-07-22 21:42:09,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 225 transitions, 579 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:09,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 235 [2022-07-22 21:42:09,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:09,829 INFO L129 PetriNetUnfolder]: 46/1393 cut-off events. [2022-07-22 21:42:09,830 INFO L130 PetriNetUnfolder]: For 47/57 co-relation queries the response was YES. [2022-07-22 21:42:09,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 1393 events. 46/1393 cut-off events. For 47/57 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10719 event pairs, 7 based on Foata normal form. 0/1307 useless extension candidates. Maximal degree in co-relation 1706. Up to 45 conditions per place. [2022-07-22 21:42:09,846 INFO L132 encePairwiseOnDemand]: 229/235 looper letters, 17 selfloop transitions, 4 changer transitions 1/232 dead transitions. [2022-07-22 21:42:09,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 232 transitions, 644 flow [2022-07-22 21:42:09,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:42:09,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:42:09,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-07-22 21:42:09,849 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9404255319148936 [2022-07-22 21:42:09,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-07-22 21:42:09,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-07-22 21:42:09,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:09,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-07-22 21:42:09,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,853 INFO L186 Difference]: Start difference. First operand has 234 places, 225 transitions, 579 flow. Second operand 3 states and 663 transitions. [2022-07-22 21:42:09,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 232 transitions, 644 flow [2022-07-22 21:42:09,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 232 transitions, 630 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-07-22 21:42:09,859 INFO L242 Difference]: Finished difference. Result has 224 places, 226 transitions, 593 flow [2022-07-22 21:42:09,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=593, PETRI_PLACES=224, PETRI_TRANSITIONS=226} [2022-07-22 21:42:09,861 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 10 predicate places. [2022-07-22 21:42:09,861 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 226 transitions, 593 flow [2022-07-22 21:42:09,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:09,862 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:09,862 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:09,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:42:09,863 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:09,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:09,863 INFO L85 PathProgramCache]: Analyzing trace with hash -68732316, now seen corresponding path program 1 times [2022-07-22 21:42:09,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:09,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228976032] [2022-07-22 21:42:09,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:09,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:10,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:10,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228976032] [2022-07-22 21:42:10,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228976032] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:10,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:10,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:10,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879935636] [2022-07-22 21:42:10,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:10,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:10,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:10,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:10,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:10,020 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:10,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 226 transitions, 593 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:10,022 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:10,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:10,022 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:10,813 INFO L129 PetriNetUnfolder]: 913/3930 cut-off events. [2022-07-22 21:42:10,813 INFO L130 PetriNetUnfolder]: For 297/395 co-relation queries the response was YES. [2022-07-22 21:42:10,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6112 conditions, 3930 events. 913/3930 cut-off events. For 297/395 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 39116 event pairs, 592 based on Foata normal form. 2/3714 useless extension candidates. Maximal degree in co-relation 6102. Up to 1296 conditions per place. [2022-07-22 21:42:10,849 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 76 selfloop transitions, 30 changer transitions 28/330 dead transitions. [2022-07-22 21:42:10,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 330 transitions, 1102 flow [2022-07-22 21:42:10,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 21:42:10,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-22 21:42:10,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4791 transitions. [2022-07-22 21:42:10,861 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494680851063829 [2022-07-22 21:42:10,861 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4791 transitions. [2022-07-22 21:42:10,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4791 transitions. [2022-07-22 21:42:10,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:10,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4791 transitions. [2022-07-22 21:42:10,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.625) internal successors, (4791), 24 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:10,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:10,887 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:10,887 INFO L186 Difference]: Start difference. First operand has 224 places, 226 transitions, 593 flow. Second operand 24 states and 4791 transitions. [2022-07-22 21:42:10,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 330 transitions, 1102 flow [2022-07-22 21:42:10,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 330 transitions, 1090 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:10,894 INFO L242 Difference]: Finished difference. Result has 264 places, 255 transitions, 797 flow [2022-07-22 21:42:10,895 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=797, PETRI_PLACES=264, PETRI_TRANSITIONS=255} [2022-07-22 21:42:10,897 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 50 predicate places. [2022-07-22 21:42:10,897 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 255 transitions, 797 flow [2022-07-22 21:42:10,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:10,901 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:10,901 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:10,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:42:10,902 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:10,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:10,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1664128876, now seen corresponding path program 2 times [2022-07-22 21:42:10,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:10,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988961266] [2022-07-22 21:42:10,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:10,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:11,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:11,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988961266] [2022-07-22 21:42:11,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988961266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:11,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:11,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:11,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425169397] [2022-07-22 21:42:11,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:11,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:11,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:11,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:11,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:11,065 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:11,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 255 transitions, 797 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:11,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:11,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:11,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:11,936 INFO L129 PetriNetUnfolder]: 1027/3970 cut-off events. [2022-07-22 21:42:11,937 INFO L130 PetriNetUnfolder]: For 3975/4061 co-relation queries the response was YES. [2022-07-22 21:42:11,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9765 conditions, 3970 events. 1027/3970 cut-off events. For 3975/4061 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 39317 event pairs, 641 based on Foata normal form. 2/3741 useless extension candidates. Maximal degree in co-relation 9735. Up to 1500 conditions per place. [2022-07-22 21:42:11,988 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 68 selfloop transitions, 45 changer transitions 19/328 dead transitions. [2022-07-22 21:42:11,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 328 transitions, 1448 flow [2022-07-22 21:42:11,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 21:42:11,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-22 21:42:11,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3988 transitions. [2022-07-22 21:42:11,998 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8485106382978723 [2022-07-22 21:42:11,999 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3988 transitions. [2022-07-22 21:42:11,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3988 transitions. [2022-07-22 21:42:12,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:12,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3988 transitions. [2022-07-22 21:42:12,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.4) internal successors, (3988), 20 states have internal predecessors, (3988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:12,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:12,034 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:12,035 INFO L186 Difference]: Start difference. First operand has 264 places, 255 transitions, 797 flow. Second operand 20 states and 3988 transitions. [2022-07-22 21:42:12,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 328 transitions, 1448 flow [2022-07-22 21:42:12,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 328 transitions, 1442 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:12,078 INFO L242 Difference]: Finished difference. Result has 294 places, 287 transitions, 1215 flow [2022-07-22 21:42:12,079 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1215, PETRI_PLACES=294, PETRI_TRANSITIONS=287} [2022-07-22 21:42:12,080 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 80 predicate places. [2022-07-22 21:42:12,080 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 287 transitions, 1215 flow [2022-07-22 21:42:12,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:12,081 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:12,081 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:12,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:42:12,082 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:12,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:12,082 INFO L85 PathProgramCache]: Analyzing trace with hash -112561332, now seen corresponding path program 3 times [2022-07-22 21:42:12,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:12,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708225429] [2022-07-22 21:42:12,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:12,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:12,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:12,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708225429] [2022-07-22 21:42:12,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708225429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:12,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:12,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:12,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496090736] [2022-07-22 21:42:12,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:12,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:12,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:12,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:12,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:12,257 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:12,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 287 transitions, 1215 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:12,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:12,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:12,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:13,280 INFO L129 PetriNetUnfolder]: 1070/4236 cut-off events. [2022-07-22 21:42:13,280 INFO L130 PetriNetUnfolder]: For 8483/8578 co-relation queries the response was YES. [2022-07-22 21:42:13,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12265 conditions, 4236 events. 1070/4236 cut-off events. For 8483/8578 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 42876 event pairs, 674 based on Foata normal form. 5/4009 useless extension candidates. Maximal degree in co-relation 12221. Up to 1603 conditions per place. [2022-07-22 21:42:13,353 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 110 selfloop transitions, 42 changer transitions 22/370 dead transitions. [2022-07-22 21:42:13,353 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 370 transitions, 2169 flow [2022-07-22 21:42:13,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 21:42:13,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-22 21:42:13,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3992 transitions. [2022-07-22 21:42:13,362 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8493617021276596 [2022-07-22 21:42:13,362 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3992 transitions. [2022-07-22 21:42:13,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3992 transitions. [2022-07-22 21:42:13,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:13,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3992 transitions. [2022-07-22 21:42:13,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.6) internal successors, (3992), 20 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:13,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:13,383 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:13,383 INFO L186 Difference]: Start difference. First operand has 294 places, 287 transitions, 1215 flow. Second operand 20 states and 3992 transitions. [2022-07-22 21:42:13,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 370 transitions, 2169 flow [2022-07-22 21:42:13,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 370 transitions, 1921 flow, removed 124 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:13,597 INFO L242 Difference]: Finished difference. Result has 324 places, 319 transitions, 1549 flow [2022-07-22 21:42:13,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1549, PETRI_PLACES=324, PETRI_TRANSITIONS=319} [2022-07-22 21:42:13,599 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 110 predicate places. [2022-07-22 21:42:13,599 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 319 transitions, 1549 flow [2022-07-22 21:42:13,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:13,600 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:13,600 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:13,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:42:13,601 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:13,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:13,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1317235276, now seen corresponding path program 4 times [2022-07-22 21:42:13,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:13,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027939918] [2022-07-22 21:42:13,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:13,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:13,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:13,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:13,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027939918] [2022-07-22 21:42:13,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027939918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:13,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:13,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:13,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805972370] [2022-07-22 21:42:13,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:13,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:13,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:13,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:13,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:13,751 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:13,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 319 transitions, 1549 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:13,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:13,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:13,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:14,837 INFO L129 PetriNetUnfolder]: 1115/4455 cut-off events. [2022-07-22 21:42:14,837 INFO L130 PetriNetUnfolder]: For 10480/10587 co-relation queries the response was YES. [2022-07-22 21:42:14,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13266 conditions, 4455 events. 1115/4455 cut-off events. For 10480/10587 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 46287 event pairs, 620 based on Foata normal form. 5/4240 useless extension candidates. Maximal degree in co-relation 13208. Up to 1410 conditions per place. [2022-07-22 21:42:14,906 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 141 selfloop transitions, 76 changer transitions 26/439 dead transitions. [2022-07-22 21:42:14,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 439 transitions, 2943 flow [2022-07-22 21:42:14,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 21:42:14,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-22 21:42:14,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4788 transitions. [2022-07-22 21:42:14,916 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8489361702127659 [2022-07-22 21:42:14,916 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4788 transitions. [2022-07-22 21:42:14,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4788 transitions. [2022-07-22 21:42:14,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:14,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4788 transitions. [2022-07-22 21:42:14,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.5) internal successors, (4788), 24 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:14,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:14,940 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:14,941 INFO L186 Difference]: Start difference. First operand has 324 places, 319 transitions, 1549 flow. Second operand 24 states and 4788 transitions. [2022-07-22 21:42:14,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 439 transitions, 2943 flow [2022-07-22 21:42:15,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 439 transitions, 2735 flow, removed 104 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:15,045 INFO L242 Difference]: Finished difference. Result has 363 places, 348 transitions, 2075 flow [2022-07-22 21:42:15,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2075, PETRI_PLACES=363, PETRI_TRANSITIONS=348} [2022-07-22 21:42:15,047 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 149 predicate places. [2022-07-22 21:42:15,047 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 348 transitions, 2075 flow [2022-07-22 21:42:15,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:15,048 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:15,048 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:15,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:42:15,049 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:15,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:15,049 INFO L85 PathProgramCache]: Analyzing trace with hash -795685710, now seen corresponding path program 5 times [2022-07-22 21:42:15,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:15,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907232927] [2022-07-22 21:42:15,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:15,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:15,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:15,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907232927] [2022-07-22 21:42:15,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907232927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:15,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:15,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:15,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380287472] [2022-07-22 21:42:15,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:15,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:15,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:15,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:15,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:15,171 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:15,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 348 transitions, 2075 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:15,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:15,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:15,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:16,683 INFO L129 PetriNetUnfolder]: 1220/4858 cut-off events. [2022-07-22 21:42:16,683 INFO L130 PetriNetUnfolder]: For 16315/16413 co-relation queries the response was YES. [2022-07-22 21:42:16,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16034 conditions, 4858 events. 1220/4858 cut-off events. For 16315/16413 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 51108 event pairs, 692 based on Foata normal form. 4/4628 useless extension candidates. Maximal degree in co-relation 15957. Up to 1643 conditions per place. [2022-07-22 21:42:16,769 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 130 selfloop transitions, 86 changer transitions 24/436 dead transitions. [2022-07-22 21:42:16,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 436 transitions, 3369 flow [2022-07-22 21:42:16,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 21:42:16,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-22 21:42:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4385 transitions. [2022-07-22 21:42:16,775 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8481624758220503 [2022-07-22 21:42:16,775 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4385 transitions. [2022-07-22 21:42:16,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4385 transitions. [2022-07-22 21:42:16,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:16,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4385 transitions. [2022-07-22 21:42:16,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.3181818181818) internal successors, (4385), 22 states have internal predecessors, (4385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:16,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:16,797 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:16,798 INFO L186 Difference]: Start difference. First operand has 363 places, 348 transitions, 2075 flow. Second operand 22 states and 4385 transitions. [2022-07-22 21:42:16,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 436 transitions, 3369 flow [2022-07-22 21:42:17,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 436 transitions, 3253 flow, removed 58 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:17,073 INFO L242 Difference]: Finished difference. Result has 394 places, 380 transitions, 2686 flow [2022-07-22 21:42:17,074 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2686, PETRI_PLACES=394, PETRI_TRANSITIONS=380} [2022-07-22 21:42:17,075 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 180 predicate places. [2022-07-22 21:42:17,075 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 380 transitions, 2686 flow [2022-07-22 21:42:17,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:17,076 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:17,076 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:17,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:42:17,077 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:17,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:17,077 INFO L85 PathProgramCache]: Analyzing trace with hash 840040018, now seen corresponding path program 6 times [2022-07-22 21:42:17,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:17,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545216573] [2022-07-22 21:42:17,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:17,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:17,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:17,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545216573] [2022-07-22 21:42:17,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545216573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:17,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:17,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:17,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009988236] [2022-07-22 21:42:17,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:17,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:17,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:17,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:17,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:17,219 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:17,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 380 transitions, 2686 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:17,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:17,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:17,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:18,513 INFO L129 PetriNetUnfolder]: 1277/5075 cut-off events. [2022-07-22 21:42:18,513 INFO L130 PetriNetUnfolder]: For 19797/19919 co-relation queries the response was YES. [2022-07-22 21:42:18,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17110 conditions, 5075 events. 1277/5075 cut-off events. For 19797/19919 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 54082 event pairs, 750 based on Foata normal form. 2/4838 useless extension candidates. Maximal degree in co-relation 17020. Up to 1725 conditions per place. [2022-07-22 21:42:18,588 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 139 selfloop transitions, 89 changer transitions 16/440 dead transitions. [2022-07-22 21:42:18,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 440 transitions, 3797 flow [2022-07-22 21:42:18,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:42:18,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:42:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3398 transitions. [2022-07-22 21:42:18,592 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8505632040050063 [2022-07-22 21:42:18,592 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3398 transitions. [2022-07-22 21:42:18,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3398 transitions. [2022-07-22 21:42:18,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:18,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3398 transitions. [2022-07-22 21:42:18,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.88235294117646) internal successors, (3398), 17 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:18,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:18,603 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:18,604 INFO L186 Difference]: Start difference. First operand has 394 places, 380 transitions, 2686 flow. Second operand 17 states and 3398 transitions. [2022-07-22 21:42:18,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 440 transitions, 3797 flow [2022-07-22 21:42:18,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 440 transitions, 3647 flow, removed 75 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:18,810 INFO L242 Difference]: Finished difference. Result has 415 places, 401 transitions, 3139 flow [2022-07-22 21:42:18,811 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3139, PETRI_PLACES=415, PETRI_TRANSITIONS=401} [2022-07-22 21:42:18,812 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 201 predicate places. [2022-07-22 21:42:18,813 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 401 transitions, 3139 flow [2022-07-22 21:42:18,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:18,813 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:18,814 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:18,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 21:42:18,814 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:18,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:18,815 INFO L85 PathProgramCache]: Analyzing trace with hash 80032396, now seen corresponding path program 7 times [2022-07-22 21:42:18,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:18,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803254097] [2022-07-22 21:42:18,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:18,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:18,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:18,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803254097] [2022-07-22 21:42:18,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803254097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:18,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:18,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:18,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053298584] [2022-07-22 21:42:18,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:18,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:18,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:18,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:18,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:18,948 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:18,949 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 401 transitions, 3139 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:18,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:18,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:18,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:20,137 INFO L129 PetriNetUnfolder]: 1304/5373 cut-off events. [2022-07-22 21:42:20,137 INFO L130 PetriNetUnfolder]: For 23368/23552 co-relation queries the response was YES. [2022-07-22 21:42:20,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18477 conditions, 5373 events. 1304/5373 cut-off events. For 23368/23552 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 58458 event pairs, 712 based on Foata normal form. 17/5152 useless extension candidates. Maximal degree in co-relation 18379. Up to 1781 conditions per place. [2022-07-22 21:42:20,294 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 147 selfloop transitions, 104 changer transitions 14/461 dead transitions. [2022-07-22 21:42:20,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 461 transitions, 4268 flow [2022-07-22 21:42:20,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:42:20,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:42:20,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3198 transitions. [2022-07-22 21:42:20,302 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850531914893617 [2022-07-22 21:42:20,302 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3198 transitions. [2022-07-22 21:42:20,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3198 transitions. [2022-07-22 21:42:20,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:20,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3198 transitions. [2022-07-22 21:42:20,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 199.875) internal successors, (3198), 16 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:20,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:20,314 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:20,314 INFO L186 Difference]: Start difference. First operand has 415 places, 401 transitions, 3139 flow. Second operand 16 states and 3198 transitions. [2022-07-22 21:42:20,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 461 transitions, 4268 flow [2022-07-22 21:42:20,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 461 transitions, 4146 flow, removed 61 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:20,566 INFO L242 Difference]: Finished difference. Result has 435 places, 419 transitions, 3566 flow [2022-07-22 21:42:20,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3021, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3566, PETRI_PLACES=435, PETRI_TRANSITIONS=419} [2022-07-22 21:42:20,568 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 221 predicate places. [2022-07-22 21:42:20,568 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 419 transitions, 3566 flow [2022-07-22 21:42:20,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:20,569 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:20,569 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:20,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 21:42:20,571 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:20,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:20,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1995871614, now seen corresponding path program 8 times [2022-07-22 21:42:20,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:20,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134865963] [2022-07-22 21:42:20,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:20,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:20,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:20,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134865963] [2022-07-22 21:42:20,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134865963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:20,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:20,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:20,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852410800] [2022-07-22 21:42:20,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:20,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:20,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:20,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:20,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:20,705 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:20,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 419 transitions, 3566 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:20,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:20,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:20,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:22,042 INFO L129 PetriNetUnfolder]: 1335/5343 cut-off events. [2022-07-22 21:42:22,042 INFO L130 PetriNetUnfolder]: For 24742/24864 co-relation queries the response was YES. [2022-07-22 21:42:22,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19704 conditions, 5343 events. 1335/5343 cut-off events. For 24742/24864 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 58449 event pairs, 679 based on Foata normal form. 11/5116 useless extension candidates. Maximal degree in co-relation 19598. Up to 1719 conditions per place. [2022-07-22 21:42:22,107 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 171 selfloop transitions, 98 changer transitions 23/488 dead transitions. [2022-07-22 21:42:22,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 488 transitions, 4987 flow [2022-07-22 21:42:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 21:42:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-22 21:42:22,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4190 transitions. [2022-07-22 21:42:22,113 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8490374873353597 [2022-07-22 21:42:22,113 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4190 transitions. [2022-07-22 21:42:22,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4190 transitions. [2022-07-22 21:42:22,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:22,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4190 transitions. [2022-07-22 21:42:22,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.52380952380952) internal successors, (4190), 21 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:22,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:22,129 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:22,129 INFO L186 Difference]: Start difference. First operand has 435 places, 419 transitions, 3566 flow. Second operand 21 states and 4190 transitions. [2022-07-22 21:42:22,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 488 transitions, 4987 flow [2022-07-22 21:42:22,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 488 transitions, 4849 flow, removed 47 selfloop flow, removed 3 redundant places. [2022-07-22 21:42:22,401 INFO L242 Difference]: Finished difference. Result has 464 places, 443 transitions, 4245 flow [2022-07-22 21:42:22,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3466, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4245, PETRI_PLACES=464, PETRI_TRANSITIONS=443} [2022-07-22 21:42:22,404 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 250 predicate places. [2022-07-22 21:42:22,404 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 443 transitions, 4245 flow [2022-07-22 21:42:22,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:22,405 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:22,405 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:22,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 21:42:22,405 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:22,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:22,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1027007434, now seen corresponding path program 9 times [2022-07-22 21:42:22,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:22,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271998933] [2022-07-22 21:42:22,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:22,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:22,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:22,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:22,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271998933] [2022-07-22 21:42:22,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271998933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:22,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:22,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:22,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667994679] [2022-07-22 21:42:22,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:22,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:22,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:22,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:22,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:22,618 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:22,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 443 transitions, 4245 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:22,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:22,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:22,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:24,122 INFO L129 PetriNetUnfolder]: 1335/5528 cut-off events. [2022-07-22 21:42:24,122 INFO L130 PetriNetUnfolder]: For 31145/31341 co-relation queries the response was YES. [2022-07-22 21:42:24,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20662 conditions, 5528 events. 1335/5528 cut-off events. For 31145/31341 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 61055 event pairs, 695 based on Foata normal form. 24/5324 useless extension candidates. Maximal degree in co-relation 20544. Up to 1819 conditions per place. [2022-07-22 21:42:24,186 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 160 selfloop transitions, 117 changer transitions 23/496 dead transitions. [2022-07-22 21:42:24,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 496 transitions, 5379 flow [2022-07-22 21:42:24,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 21:42:24,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-22 21:42:24,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-07-22 21:42:24,192 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-07-22 21:42:24,192 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-07-22 21:42:24,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-07-22 21:42:24,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:24,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-07-22 21:42:24,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 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) [2022-07-22 21:42:24,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:24,205 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:24,206 INFO L186 Difference]: Start difference. First operand has 464 places, 443 transitions, 4245 flow. Second operand 18 states and 3593 transitions. [2022-07-22 21:42:24,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 496 transitions, 5379 flow [2022-07-22 21:42:24,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 496 transitions, 5187 flow, removed 96 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:24,480 INFO L242 Difference]: Finished difference. Result has 485 places, 453 transitions, 4557 flow [2022-07-22 21:42:24,481 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4067, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4557, PETRI_PLACES=485, PETRI_TRANSITIONS=453} [2022-07-22 21:42:24,482 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 271 predicate places. [2022-07-22 21:42:24,482 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 453 transitions, 4557 flow [2022-07-22 21:42:24,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:24,483 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:24,483 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:24,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 21:42:24,483 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:24,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:24,484 INFO L85 PathProgramCache]: Analyzing trace with hash 331830240, now seen corresponding path program 10 times [2022-07-22 21:42:24,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:24,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894289705] [2022-07-22 21:42:24,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:24,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:24,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:24,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894289705] [2022-07-22 21:42:24,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894289705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:24,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:24,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:24,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149396090] [2022-07-22 21:42:24,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:24,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:24,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:24,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:24,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:24,584 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:24,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 453 transitions, 4557 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:24,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:24,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:24,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:26,005 INFO L129 PetriNetUnfolder]: 1368/5640 cut-off events. [2022-07-22 21:42:26,006 INFO L130 PetriNetUnfolder]: For 30503/30631 co-relation queries the response was YES. [2022-07-22 21:42:26,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21861 conditions, 5640 events. 1368/5640 cut-off events. For 30503/30631 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 63155 event pairs, 696 based on Foata normal form. 11/5411 useless extension candidates. Maximal degree in co-relation 21736. Up to 1869 conditions per place. [2022-07-22 21:42:26,075 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 188 selfloop transitions, 107 changer transitions 15/506 dead transitions. [2022-07-22 21:42:26,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 506 transitions, 5851 flow [2022-07-22 21:42:26,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:42:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:42:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3398 transitions. [2022-07-22 21:42:26,080 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8505632040050063 [2022-07-22 21:42:26,080 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3398 transitions. [2022-07-22 21:42:26,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3398 transitions. [2022-07-22 21:42:26,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:26,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3398 transitions. [2022-07-22 21:42:26,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.88235294117646) internal successors, (3398), 17 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:26,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:26,090 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:26,090 INFO L186 Difference]: Start difference. First operand has 485 places, 453 transitions, 4557 flow. Second operand 17 states and 3398 transitions. [2022-07-22 21:42:26,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 506 transitions, 5851 flow [2022-07-22 21:42:26,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 506 transitions, 5669 flow, removed 47 selfloop flow, removed 4 redundant places. [2022-07-22 21:42:26,411 INFO L242 Difference]: Finished difference. Result has 504 places, 474 transitions, 5100 flow [2022-07-22 21:42:26,412 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4391, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5100, PETRI_PLACES=504, PETRI_TRANSITIONS=474} [2022-07-22 21:42:26,412 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 290 predicate places. [2022-07-22 21:42:26,412 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 474 transitions, 5100 flow [2022-07-22 21:42:26,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:26,413 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:26,413 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:26,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 21:42:26,413 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:26,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:26,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2122669658, now seen corresponding path program 11 times [2022-07-22 21:42:26,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:26,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891692924] [2022-07-22 21:42:26,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:26,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:26,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:26,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891692924] [2022-07-22 21:42:26,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891692924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:26,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:26,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:26,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855297463] [2022-07-22 21:42:26,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:26,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:26,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:26,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:26,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:26,543 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:26,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 474 transitions, 5100 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:26,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:26,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:26,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:28,189 INFO L129 PetriNetUnfolder]: 1375/5867 cut-off events. [2022-07-22 21:42:28,190 INFO L130 PetriNetUnfolder]: For 34876/35025 co-relation queries the response was YES. [2022-07-22 21:42:28,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22714 conditions, 5867 events. 1375/5867 cut-off events. For 34876/35025 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 66240 event pairs, 765 based on Foata normal form. 2/5620 useless extension candidates. Maximal degree in co-relation 22581. Up to 1891 conditions per place. [2022-07-22 21:42:28,268 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 173 selfloop transitions, 127 changer transitions 20/516 dead transitions. [2022-07-22 21:42:28,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 516 transitions, 6163 flow [2022-07-22 21:42:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 21:42:28,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-22 21:42:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-07-22 21:42:28,274 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-07-22 21:42:28,274 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-07-22 21:42:28,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-07-22 21:42:28,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:28,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-07-22 21:42:28,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 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) [2022-07-22 21:42:28,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,286 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,287 INFO L186 Difference]: Start difference. First operand has 504 places, 474 transitions, 5100 flow. Second operand 18 states and 3593 transitions. [2022-07-22 21:42:28,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 516 transitions, 6163 flow [2022-07-22 21:42:28,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 516 transitions, 5985 flow, removed 64 selfloop flow, removed 3 redundant places. [2022-07-22 21:42:28,567 INFO L242 Difference]: Finished difference. Result has 523 places, 486 transitions, 5477 flow [2022-07-22 21:42:28,568 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4928, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5477, PETRI_PLACES=523, PETRI_TRANSITIONS=486} [2022-07-22 21:42:28,568 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 309 predicate places. [2022-07-22 21:42:28,568 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 486 transitions, 5477 flow [2022-07-22 21:42:28,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,569 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:28,569 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:28,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 21:42:28,569 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:28,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:28,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1393070102, now seen corresponding path program 12 times [2022-07-22 21:42:28,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:28,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839635928] [2022-07-22 21:42:28,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:28,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:28,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:28,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839635928] [2022-07-22 21:42:28,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839635928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:28,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:28,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:28,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074851376] [2022-07-22 21:42:28,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:28,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:28,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:28,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:28,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:28,689 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:28,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 486 transitions, 5477 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:28,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:28,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:28,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:30,238 INFO L129 PetriNetUnfolder]: 1370/5689 cut-off events. [2022-07-22 21:42:30,238 INFO L130 PetriNetUnfolder]: For 31921/32052 co-relation queries the response was YES. [2022-07-22 21:42:30,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22719 conditions, 5689 events. 1370/5689 cut-off events. For 31921/32052 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 63951 event pairs, 697 based on Foata normal form. 11/5461 useless extension candidates. Maximal degree in co-relation 22581. Up to 1881 conditions per place. [2022-07-22 21:42:30,313 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 191 selfloop transitions, 116 changer transitions 24/527 dead transitions. [2022-07-22 21:42:30,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 527 transitions, 6531 flow [2022-07-22 21:42:30,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 21:42:30,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-22 21:42:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3597 transitions. [2022-07-22 21:42:30,316 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850354609929078 [2022-07-22 21:42:30,316 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3597 transitions. [2022-07-22 21:42:30,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3597 transitions. [2022-07-22 21:42:30,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:30,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3597 transitions. [2022-07-22 21:42:30,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.83333333333334) internal successors, (3597), 18 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,326 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,327 INFO L186 Difference]: Start difference. First operand has 523 places, 486 transitions, 5477 flow. Second operand 18 states and 3597 transitions. [2022-07-22 21:42:30,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 527 transitions, 6531 flow [2022-07-22 21:42:30,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 527 transitions, 6394 flow, removed 42 selfloop flow, removed 4 redundant places. [2022-07-22 21:42:30,632 INFO L242 Difference]: Finished difference. Result has 541 places, 495 transitions, 5838 flow [2022-07-22 21:42:30,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5346, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5838, PETRI_PLACES=541, PETRI_TRANSITIONS=495} [2022-07-22 21:42:30,634 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 327 predicate places. [2022-07-22 21:42:30,634 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 495 transitions, 5838 flow [2022-07-22 21:42:30,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,634 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:30,634 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:30,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 21:42:30,635 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:30,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:30,635 INFO L85 PathProgramCache]: Analyzing trace with hash 869174098, now seen corresponding path program 13 times [2022-07-22 21:42:30,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:30,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54243758] [2022-07-22 21:42:30,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:30,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:30,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:30,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:30,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54243758] [2022-07-22 21:42:30,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54243758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:30,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:30,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:30,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564676992] [2022-07-22 21:42:30,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:30,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:30,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:30,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:30,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:30,738 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:30,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 495 transitions, 5838 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:30,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:30,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:30,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:32,647 INFO L129 PetriNetUnfolder]: 1468/6055 cut-off events. [2022-07-22 21:42:32,647 INFO L130 PetriNetUnfolder]: For 40574/40705 co-relation queries the response was YES. [2022-07-22 21:42:32,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25112 conditions, 6055 events. 1468/6055 cut-off events. For 40574/40705 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 68923 event pairs, 699 based on Foata normal form. 5/5832 useless extension candidates. Maximal degree in co-relation 24970. Up to 1920 conditions per place. [2022-07-22 21:42:32,732 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 215 selfloop transitions, 144 changer transitions 23/578 dead transitions. [2022-07-22 21:42:32,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 578 transitions, 7572 flow [2022-07-22 21:42:32,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 21:42:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-22 21:42:32,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4383 transitions. [2022-07-22 21:42:32,737 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8477756286266924 [2022-07-22 21:42:32,738 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4383 transitions. [2022-07-22 21:42:32,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4383 transitions. [2022-07-22 21:42:32,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:32,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4383 transitions. [2022-07-22 21:42:32,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.22727272727272) internal successors, (4383), 22 states have internal predecessors, (4383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:32,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:32,748 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:32,748 INFO L186 Difference]: Start difference. First operand has 541 places, 495 transitions, 5838 flow. Second operand 22 states and 4383 transitions. [2022-07-22 21:42:32,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 578 transitions, 7572 flow [2022-07-22 21:42:33,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 578 transitions, 7447 flow, removed 61 selfloop flow, removed 3 redundant places. [2022-07-22 21:42:33,106 INFO L242 Difference]: Finished difference. Result has 571 places, 527 transitions, 6764 flow [2022-07-22 21:42:33,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5715, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6764, PETRI_PLACES=571, PETRI_TRANSITIONS=527} [2022-07-22 21:42:33,107 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 357 predicate places. [2022-07-22 21:42:33,107 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 527 transitions, 6764 flow [2022-07-22 21:42:33,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:33,108 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:33,108 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, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:33,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 21:42:33,108 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:33,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:33,109 INFO L85 PathProgramCache]: Analyzing trace with hash 173628278, now seen corresponding path program 14 times [2022-07-22 21:42:33,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:33,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316962760] [2022-07-22 21:42:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:33,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:33,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:33,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:33,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316962760] [2022-07-22 21:42:33,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316962760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:33,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:33,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:33,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684213998] [2022-07-22 21:42:33,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:33,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:33,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:33,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:33,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:33,198 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:33,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 527 transitions, 6764 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:33,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:33,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:33,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:35,110 INFO L129 PetriNetUnfolder]: 1502/6295 cut-off events. [2022-07-22 21:42:35,110 INFO L130 PetriNetUnfolder]: For 47419/47550 co-relation queries the response was YES. [2022-07-22 21:42:35,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27257 conditions, 6295 events. 1502/6295 cut-off events. For 47419/47550 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 72622 event pairs, 710 based on Foata normal form. 5/6063 useless extension candidates. Maximal degree in co-relation 27103. Up to 1945 conditions per place. [2022-07-22 21:42:35,194 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 270 selfloop transitions, 106 changer transitions 21/593 dead transitions. [2022-07-22 21:42:35,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 593 transitions, 8429 flow [2022-07-22 21:42:35,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 21:42:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-22 21:42:35,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4187 transitions. [2022-07-22 21:42:35,197 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8484295845997973 [2022-07-22 21:42:35,198 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4187 transitions. [2022-07-22 21:42:35,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4187 transitions. [2022-07-22 21:42:35,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:35,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4187 transitions. [2022-07-22 21:42:35,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.38095238095238) internal successors, (4187), 21 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:35,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:35,208 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:35,208 INFO L186 Difference]: Start difference. First operand has 571 places, 527 transitions, 6764 flow. Second operand 21 states and 4187 transitions. [2022-07-22 21:42:35,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 593 transitions, 8429 flow [2022-07-22 21:42:35,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 593 transitions, 8239 flow, removed 95 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:35,653 INFO L242 Difference]: Finished difference. Result has 601 places, 551 transitions, 7438 flow [2022-07-22 21:42:35,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=6588, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7438, PETRI_PLACES=601, PETRI_TRANSITIONS=551} [2022-07-22 21:42:35,654 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 387 predicate places. [2022-07-22 21:42:35,654 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 551 transitions, 7438 flow [2022-07-22 21:42:35,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:35,654 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:35,655 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:35,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 21:42:35,655 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:35,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:35,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1231041606, now seen corresponding path program 15 times [2022-07-22 21:42:35,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:35,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707684934] [2022-07-22 21:42:35,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:35,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:35,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:35,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707684934] [2022-07-22 21:42:35,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707684934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:35,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:35,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66461298] [2022-07-22 21:42:35,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:35,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:35,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:35,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:35,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:35,752 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:35,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 551 transitions, 7438 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:35,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:35,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:35,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:37,784 INFO L129 PetriNetUnfolder]: 1525/6442 cut-off events. [2022-07-22 21:42:37,784 INFO L130 PetriNetUnfolder]: For 52156/52287 co-relation queries the response was YES. [2022-07-22 21:42:37,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28522 conditions, 6442 events. 1525/6442 cut-off events. For 52156/52287 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 75161 event pairs, 702 based on Foata normal form. 5/6217 useless extension candidates. Maximal degree in co-relation 28355. Up to 2016 conditions per place. [2022-07-22 21:42:37,874 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 236 selfloop transitions, 162 changer transitions 18/612 dead transitions. [2022-07-22 21:42:37,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 612 transitions, 8986 flow [2022-07-22 21:42:37,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 21:42:37,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-22 21:42:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-07-22 21:42:37,877 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-07-22 21:42:37,877 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-07-22 21:42:37,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-07-22 21:42:37,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:37,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-07-22 21:42:37,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 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) [2022-07-22 21:42:37,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:37,887 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:37,887 INFO L186 Difference]: Start difference. First operand has 601 places, 551 transitions, 7438 flow. Second operand 18 states and 3593 transitions. [2022-07-22 21:42:37,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 612 transitions, 8986 flow [2022-07-22 21:42:38,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 612 transitions, 8796 flow, removed 95 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:38,378 INFO L242 Difference]: Finished difference. Result has 622 places, 572 transitions, 8094 flow [2022-07-22 21:42:38,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7250, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8094, PETRI_PLACES=622, PETRI_TRANSITIONS=572} [2022-07-22 21:42:38,378 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 408 predicate places. [2022-07-22 21:42:38,379 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 572 transitions, 8094 flow [2022-07-22 21:42:38,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:38,379 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:38,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:38,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 21:42:38,379 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:38,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:38,379 INFO L85 PathProgramCache]: Analyzing trace with hash 787764488, now seen corresponding path program 16 times [2022-07-22 21:42:38,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:38,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998580734] [2022-07-22 21:42:38,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:38,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:38,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:38,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998580734] [2022-07-22 21:42:38,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998580734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:38,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:38,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:38,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537212060] [2022-07-22 21:42:38,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:38,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:38,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:38,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:38,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:38,468 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:38,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 572 transitions, 8094 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:38,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:38,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:38,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:40,446 INFO L129 PetriNetUnfolder]: 1580/6607 cut-off events. [2022-07-22 21:42:40,446 INFO L130 PetriNetUnfolder]: For 57093/57224 co-relation queries the response was YES. [2022-07-22 21:42:40,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30514 conditions, 6607 events. 1580/6607 cut-off events. For 57093/57224 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 77398 event pairs, 713 based on Foata normal form. 5/6374 useless extension candidates. Maximal degree in co-relation 30340. Up to 2059 conditions per place. [2022-07-22 21:42:40,546 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 280 selfloop transitions, 135 changer transitions 16/627 dead transitions. [2022-07-22 21:42:40,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 627 transitions, 9692 flow [2022-07-22 21:42:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:42:40,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:42:40,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3397 transitions. [2022-07-22 21:42:40,549 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8503128911138924 [2022-07-22 21:42:40,549 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3397 transitions. [2022-07-22 21:42:40,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3397 transitions. [2022-07-22 21:42:40,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:40,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3397 transitions. [2022-07-22 21:42:40,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.8235294117647) internal successors, (3397), 17 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:40,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:40,557 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:40,557 INFO L186 Difference]: Start difference. First operand has 622 places, 572 transitions, 8094 flow. Second operand 17 states and 3397 transitions. [2022-07-22 21:42:40,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 627 transitions, 9692 flow [2022-07-22 21:42:41,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 627 transitions, 9474 flow, removed 109 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:41,090 INFO L242 Difference]: Finished difference. Result has 643 places, 593 transitions, 8730 flow [2022-07-22 21:42:41,091 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7920, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8730, PETRI_PLACES=643, PETRI_TRANSITIONS=593} [2022-07-22 21:42:41,092 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 429 predicate places. [2022-07-22 21:42:41,092 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 593 transitions, 8730 flow [2022-07-22 21:42:41,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:41,092 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:41,093 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:41,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 21:42:41,093 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:41,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:41,093 INFO L85 PathProgramCache]: Analyzing trace with hash 340551250, now seen corresponding path program 17 times [2022-07-22 21:42:41,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:41,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228844568] [2022-07-22 21:42:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:41,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:41,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:41,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228844568] [2022-07-22 21:42:41,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228844568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:41,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:41,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:41,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637316723] [2022-07-22 21:42:41,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:41,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:41,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:41,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:41,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:41,190 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:41,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 593 transitions, 8730 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:41,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:41,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:41,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:43,448 INFO L129 PetriNetUnfolder]: 1603/6826 cut-off events. [2022-07-22 21:42:43,448 INFO L130 PetriNetUnfolder]: For 61184/61315 co-relation queries the response was YES. [2022-07-22 21:42:43,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31933 conditions, 6826 events. 1603/6826 cut-off events. For 61184/61315 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 81044 event pairs, 710 based on Foata normal form. 5/6592 useless extension candidates. Maximal degree in co-relation 31751. Up to 2094 conditions per place. [2022-07-22 21:42:43,557 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 305 selfloop transitions, 127 changer transitions 17/645 dead transitions. [2022-07-22 21:42:43,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 645 transitions, 10337 flow [2022-07-22 21:42:43,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 21:42:43,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-22 21:42:43,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3596 transitions. [2022-07-22 21:42:43,560 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8501182033096927 [2022-07-22 21:42:43,560 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3596 transitions. [2022-07-22 21:42:43,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3596 transitions. [2022-07-22 21:42:43,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:43,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3596 transitions. [2022-07-22 21:42:43,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.77777777777777) internal successors, (3596), 18 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:43,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:43,565 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:43,565 INFO L186 Difference]: Start difference. First operand has 643 places, 593 transitions, 8730 flow. Second operand 18 states and 3596 transitions. [2022-07-22 21:42:43,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 645 transitions, 10337 flow [2022-07-22 21:42:44,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 645 transitions, 10203 flow, removed 67 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:44,123 INFO L242 Difference]: Finished difference. Result has 664 places, 612 transitions, 9395 flow [2022-07-22 21:42:44,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=8600, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9395, PETRI_PLACES=664, PETRI_TRANSITIONS=612} [2022-07-22 21:42:44,125 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 450 predicate places. [2022-07-22 21:42:44,125 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 612 transitions, 9395 flow [2022-07-22 21:42:44,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:44,125 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:44,125 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:44,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 21:42:44,125 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:44,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:44,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1026103542, now seen corresponding path program 18 times [2022-07-22 21:42:44,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:44,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098019123] [2022-07-22 21:42:44,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:44,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:44,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:44,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098019123] [2022-07-22 21:42:44,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098019123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:44,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:44,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:44,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548831073] [2022-07-22 21:42:44,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:44,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:44,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:44,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:44,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:44,242 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:44,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 612 transitions, 9395 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:44,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:44,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:44,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:46,380 INFO L129 PetriNetUnfolder]: 1606/6864 cut-off events. [2022-07-22 21:42:46,380 INFO L130 PetriNetUnfolder]: For 64603/64734 co-relation queries the response was YES. [2022-07-22 21:42:46,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32733 conditions, 6864 events. 1606/6864 cut-off events. For 64603/64734 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 81596 event pairs, 704 based on Foata normal form. 5/6641 useless extension candidates. Maximal degree in co-relation 32544. Up to 2120 conditions per place. [2022-07-22 21:42:46,486 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 260 selfloop transitions, 179 changer transitions 22/657 dead transitions. [2022-07-22 21:42:46,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 657 transitions, 10708 flow [2022-07-22 21:42:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:42:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:42:46,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3201 transitions. [2022-07-22 21:42:46,488 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8513297872340425 [2022-07-22 21:42:46,489 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3201 transitions. [2022-07-22 21:42:46,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3201 transitions. [2022-07-22 21:42:46,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:46,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3201 transitions. [2022-07-22 21:42:46,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 200.0625) internal successors, (3201), 16 states have internal predecessors, (3201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:46,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:46,495 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:46,496 INFO L186 Difference]: Start difference. First operand has 664 places, 612 transitions, 9395 flow. Second operand 16 states and 3201 transitions. [2022-07-22 21:42:46,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 657 transitions, 10708 flow [2022-07-22 21:42:47,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 657 transitions, 10536 flow, removed 86 selfloop flow, removed 2 redundant places. [2022-07-22 21:42:47,134 INFO L242 Difference]: Finished difference. Result has 682 places, 620 transitions, 9803 flow [2022-07-22 21:42:47,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=9225, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9803, PETRI_PLACES=682, PETRI_TRANSITIONS=620} [2022-07-22 21:42:47,135 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 468 predicate places. [2022-07-22 21:42:47,135 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 620 transitions, 9803 flow [2022-07-22 21:42:47,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:47,135 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:47,135 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:47,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 21:42:47,135 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:47,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:47,136 INFO L85 PathProgramCache]: Analyzing trace with hash 157105292, now seen corresponding path program 19 times [2022-07-22 21:42:47,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:47,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867544280] [2022-07-22 21:42:47,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:47,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:47,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:47,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867544280] [2022-07-22 21:42:47,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867544280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:47,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:47,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:47,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53242544] [2022-07-22 21:42:47,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:47,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:47,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:47,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:47,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:47,222 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:47,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 620 transitions, 9803 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:47,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:47,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:47,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:49,694 INFO L129 PetriNetUnfolder]: 1625/7174 cut-off events. [2022-07-22 21:42:49,695 INFO L130 PetriNetUnfolder]: For 70157/70288 co-relation queries the response was YES. [2022-07-22 21:42:49,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34320 conditions, 7174 events. 1625/7174 cut-off events. For 70157/70288 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 87072 event pairs, 717 based on Foata normal form. 5/6940 useless extension candidates. Maximal degree in co-relation 34125. Up to 2141 conditions per place. [2022-07-22 21:42:49,811 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 312 selfloop transitions, 135 changer transitions 22/665 dead transitions. [2022-07-22 21:42:49,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 696 places, 665 transitions, 11273 flow [2022-07-22 21:42:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:42:49,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:42:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3401 transitions. [2022-07-22 21:42:49,814 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8513141426783479 [2022-07-22 21:42:49,814 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3401 transitions. [2022-07-22 21:42:49,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3401 transitions. [2022-07-22 21:42:49,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:49,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3401 transitions. [2022-07-22 21:42:49,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 200.05882352941177) internal successors, (3401), 17 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:49,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:49,821 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:49,821 INFO L186 Difference]: Start difference. First operand has 682 places, 620 transitions, 9803 flow. Second operand 17 states and 3401 transitions. [2022-07-22 21:42:49,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 696 places, 665 transitions, 11273 flow [2022-07-22 21:42:50,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 665 transitions, 10968 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-07-22 21:42:50,457 INFO L242 Difference]: Finished difference. Result has 698 places, 633 transitions, 10169 flow [2022-07-22 21:42:50,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=9518, PETRI_DIFFERENCE_MINUEND_PLACES=675, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10169, PETRI_PLACES=698, PETRI_TRANSITIONS=633} [2022-07-22 21:42:50,459 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 484 predicate places. [2022-07-22 21:42:50,459 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 633 transitions, 10169 flow [2022-07-22 21:42:50,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:50,460 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:50,460 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:50,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 21:42:50,460 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:50,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:50,461 INFO L85 PathProgramCache]: Analyzing trace with hash 573914000, now seen corresponding path program 20 times [2022-07-22 21:42:50,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:50,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678797914] [2022-07-22 21:42:50,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:50,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:50,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:50,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678797914] [2022-07-22 21:42:50,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678797914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:50,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:50,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:50,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253466371] [2022-07-22 21:42:50,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:50,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:50,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:50,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:50,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:50,562 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:50,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 633 transitions, 10169 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:50,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:50,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:50,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:52,886 INFO L129 PetriNetUnfolder]: 1625/7156 cut-off events. [2022-07-22 21:42:52,887 INFO L130 PetriNetUnfolder]: For 70851/70982 co-relation queries the response was YES. [2022-07-22 21:42:52,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34388 conditions, 7156 events. 1625/7156 cut-off events. For 70851/70982 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 86615 event pairs, 710 based on Foata normal form. 5/6929 useless extension candidates. Maximal degree in co-relation 34188. Up to 2137 conditions per place. [2022-07-22 21:42:53,016 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 298 selfloop transitions, 153 changer transitions 27/674 dead transitions. [2022-07-22 21:42:53,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 674 transitions, 11514 flow [2022-07-22 21:42:53,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 21:42:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-22 21:42:53,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3596 transitions. [2022-07-22 21:42:53,019 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8501182033096927 [2022-07-22 21:42:53,019 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3596 transitions. [2022-07-22 21:42:53,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3596 transitions. [2022-07-22 21:42:53,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:53,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3596 transitions. [2022-07-22 21:42:53,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.77777777777777) internal successors, (3596), 18 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:53,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:53,027 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:53,027 INFO L186 Difference]: Start difference. First operand has 698 places, 633 transitions, 10169 flow. Second operand 18 states and 3596 transitions. [2022-07-22 21:42:53,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 674 transitions, 11514 flow [2022-07-22 21:42:53,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 710 places, 674 transitions, 11345 flow, removed 48 selfloop flow, removed 3 redundant places. [2022-07-22 21:42:53,989 INFO L242 Difference]: Finished difference. Result has 717 places, 642 transitions, 10587 flow [2022-07-22 21:42:53,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=10004, PETRI_DIFFERENCE_MINUEND_PLACES=693, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10587, PETRI_PLACES=717, PETRI_TRANSITIONS=642} [2022-07-22 21:42:53,990 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 503 predicate places. [2022-07-22 21:42:53,990 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 642 transitions, 10587 flow [2022-07-22 21:42:53,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:53,991 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:53,991 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:53,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 21:42:53,992 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:53,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:53,992 INFO L85 PathProgramCache]: Analyzing trace with hash 324066382, now seen corresponding path program 1 times [2022-07-22 21:42:53,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:53,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938258607] [2022-07-22 21:42:53,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:53,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:54,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:54,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938258607] [2022-07-22 21:42:54,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938258607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:54,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:54,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:54,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721535906] [2022-07-22 21:42:54,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:54,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:54,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:54,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:54,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:54,086 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:54,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 642 transitions, 10587 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:54,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:54,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:54,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:56,319 INFO L129 PetriNetUnfolder]: 1623/6822 cut-off events. [2022-07-22 21:42:56,320 INFO L130 PetriNetUnfolder]: For 75736/75863 co-relation queries the response was YES. [2022-07-22 21:42:56,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34239 conditions, 6822 events. 1623/6822 cut-off events. For 75736/75863 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 81227 event pairs, 205 based on Foata normal form. 3/6618 useless extension candidates. Maximal degree in co-relation 34034. Up to 2437 conditions per place. [2022-07-22 21:42:56,447 INFO L132 encePairwiseOnDemand]: 220/235 looper letters, 439 selfloop transitions, 88 changer transitions 18/739 dead transitions. [2022-07-22 21:42:56,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 730 places, 739 transitions, 12323 flow [2022-07-22 21:42:56,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:42:56,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:42:56,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3227 transitions. [2022-07-22 21:42:56,449 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8582446808510639 [2022-07-22 21:42:56,450 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3227 transitions. [2022-07-22 21:42:56,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3227 transitions. [2022-07-22 21:42:56,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:56,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3227 transitions. [2022-07-22 21:42:56,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 201.6875) internal successors, (3227), 16 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:56,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:56,456 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:56,456 INFO L186 Difference]: Start difference. First operand has 717 places, 642 transitions, 10587 flow. Second operand 16 states and 3227 transitions. [2022-07-22 21:42:56,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 730 places, 739 transitions, 12323 flow [2022-07-22 21:42:57,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 726 places, 739 transitions, 12121 flow, removed 62 selfloop flow, removed 4 redundant places. [2022-07-22 21:42:57,415 INFO L242 Difference]: Finished difference. Result has 738 places, 675 transitions, 10939 flow [2022-07-22 21:42:57,417 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=10393, PETRI_DIFFERENCE_MINUEND_PLACES=711, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10939, PETRI_PLACES=738, PETRI_TRANSITIONS=675} [2022-07-22 21:42:57,417 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 524 predicate places. [2022-07-22 21:42:57,417 INFO L495 AbstractCegarLoop]: Abstraction has has 738 places, 675 transitions, 10939 flow [2022-07-22 21:42:57,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:57,418 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:57,418 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:57,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 21:42:57,418 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:57,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:57,419 INFO L85 PathProgramCache]: Analyzing trace with hash 809221024, now seen corresponding path program 1 times [2022-07-22 21:42:57,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:57,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408605514] [2022-07-22 21:42:57,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:57,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:57,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:57,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408605514] [2022-07-22 21:42:57,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408605514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:57,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:57,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:42:57,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72232731] [2022-07-22 21:42:57,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:57,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:42:57,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:57,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:42:57,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:42:57,478 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 235 [2022-07-22 21:42:57,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 738 places, 675 transitions, 10939 flow. Second operand has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:57,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:57,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 235 [2022-07-22 21:42:57,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:58,260 INFO L129 PetriNetUnfolder]: 453/3449 cut-off events. [2022-07-22 21:42:58,261 INFO L130 PetriNetUnfolder]: For 37902/38341 co-relation queries the response was YES. [2022-07-22 21:42:58,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15939 conditions, 3449 events. 453/3449 cut-off events. For 37902/38341 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 35890 event pairs, 39 based on Foata normal form. 23/3358 useless extension candidates. Maximal degree in co-relation 15725. Up to 339 conditions per place. [2022-07-22 21:42:58,552 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 19 selfloop transitions, 0 changer transitions 475/695 dead transitions. [2022-07-22 21:42:58,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 695 transitions, 11076 flow [2022-07-22 21:42:58,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:42:58,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:42:58,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1861 transitions. [2022-07-22 21:42:58,553 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8799054373522459 [2022-07-22 21:42:58,554 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1861 transitions. [2022-07-22 21:42:58,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1861 transitions. [2022-07-22 21:42:58,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:58,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1861 transitions. [2022-07-22 21:42:58,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 206.77777777777777) internal successors, (1861), 9 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:58,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:58,556 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:58,556 INFO L186 Difference]: Start difference. First operand has 738 places, 675 transitions, 10939 flow. Second operand 9 states and 1861 transitions. [2022-07-22 21:42:58,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 744 places, 695 transitions, 11076 flow [2022-07-22 21:42:58,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 695 transitions, 10500 flow, removed 132 selfloop flow, removed 62 redundant places. [2022-07-22 21:42:58,946 INFO L242 Difference]: Finished difference. Result has 688 places, 220 transitions, 786 flow [2022-07-22 21:42:58,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=10363, PETRI_DIFFERENCE_MINUEND_PLACES=674, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=786, PETRI_PLACES=688, PETRI_TRANSITIONS=220} [2022-07-22 21:42:58,947 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 474 predicate places. [2022-07-22 21:42:58,947 INFO L495 AbstractCegarLoop]: Abstraction has has 688 places, 220 transitions, 786 flow [2022-07-22 21:42:58,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:58,947 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:58,948 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:58,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 21:42:58,948 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:58,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:58,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1449884105, now seen corresponding path program 1 times [2022-07-22 21:42:58,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:58,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504143918] [2022-07-22 21:42:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:58,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:59,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:59,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504143918] [2022-07-22 21:42:59,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504143918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:59,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:59,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:59,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081507008] [2022-07-22 21:42:59,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:59,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:59,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:59,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:59,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:59,077 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:59,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 220 transitions, 786 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:59,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:59,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:59,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:42:59,719 INFO L129 PetriNetUnfolder]: 460/1907 cut-off events. [2022-07-22 21:42:59,719 INFO L130 PetriNetUnfolder]: For 5592/5633 co-relation queries the response was YES. [2022-07-22 21:42:59,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5251 conditions, 1907 events. 460/1907 cut-off events. For 5592/5633 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 15090 event pairs, 190 based on Foata normal form. 11/1809 useless extension candidates. Maximal degree in co-relation 5091. Up to 486 conditions per place. [2022-07-22 21:42:59,750 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 86 selfloop transitions, 33 changer transitions 28/328 dead transitions. [2022-07-22 21:42:59,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 328 transitions, 1567 flow [2022-07-22 21:42:59,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 21:42:59,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-22 21:42:59,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4790 transitions. [2022-07-22 21:42:59,754 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.849290780141844 [2022-07-22 21:42:59,754 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4790 transitions. [2022-07-22 21:42:59,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4790 transitions. [2022-07-22 21:42:59,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:42:59,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4790 transitions. [2022-07-22 21:42:59,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.58333333333334) internal successors, (4790), 24 states have internal predecessors, (4790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:59,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:59,762 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:59,762 INFO L186 Difference]: Start difference. First operand has 688 places, 220 transitions, 786 flow. Second operand 24 states and 4790 transitions. [2022-07-22 21:42:59,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 328 transitions, 1567 flow [2022-07-22 21:42:59,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 328 transitions, 1265 flow, removed 123 selfloop flow, removed 72 redundant places. [2022-07-22 21:42:59,796 INFO L242 Difference]: Finished difference. Result has 353 places, 250 transitions, 880 flow [2022-07-22 21:42:59,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=880, PETRI_PLACES=353, PETRI_TRANSITIONS=250} [2022-07-22 21:42:59,797 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 139 predicate places. [2022-07-22 21:42:59,797 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 250 transitions, 880 flow [2022-07-22 21:42:59,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:59,798 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:42:59,798 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:42:59,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 21:42:59,798 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:42:59,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:42:59,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1247485979, now seen corresponding path program 2 times [2022-07-22 21:42:59,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:42:59,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824872314] [2022-07-22 21:42:59,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:42:59,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:42:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:42:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:42:59,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:42:59,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824872314] [2022-07-22 21:42:59,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824872314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:42:59,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:42:59,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:42:59,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436665543] [2022-07-22 21:42:59,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:42:59,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:42:59,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:42:59,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:42:59,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:42:59,890 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:42:59,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 250 transitions, 880 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:42:59,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:42:59,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:42:59,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:43:00,544 INFO L129 PetriNetUnfolder]: 533/2184 cut-off events. [2022-07-22 21:43:00,545 INFO L130 PetriNetUnfolder]: For 4210/4251 co-relation queries the response was YES. [2022-07-22 21:43:00,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6348 conditions, 2184 events. 533/2184 cut-off events. For 4210/4251 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 17856 event pairs, 251 based on Foata normal form. 7/2037 useless extension candidates. Maximal degree in co-relation 6228. Up to 673 conditions per place. [2022-07-22 21:43:00,570 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 85 selfloop transitions, 36 changer transitions 16/318 dead transitions. [2022-07-22 21:43:00,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 318 transitions, 1593 flow [2022-07-22 21:43:00,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:43:00,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:43:00,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3198 transitions. [2022-07-22 21:43:00,572 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850531914893617 [2022-07-22 21:43:00,572 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3198 transitions. [2022-07-22 21:43:00,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3198 transitions. [2022-07-22 21:43:00,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:43:00,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3198 transitions. [2022-07-22 21:43:00,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 199.875) internal successors, (3198), 16 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:00,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:00,577 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:00,577 INFO L186 Difference]: Start difference. First operand has 353 places, 250 transitions, 880 flow. Second operand 16 states and 3198 transitions. [2022-07-22 21:43:00,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 318 transitions, 1593 flow [2022-07-22 21:43:00,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 318 transitions, 1553 flow, removed 20 selfloop flow, removed 2 redundant places. [2022-07-22 21:43:00,595 INFO L242 Difference]: Finished difference. Result has 375 places, 274 transitions, 1236 flow [2022-07-22 21:43:00,595 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1236, PETRI_PLACES=375, PETRI_TRANSITIONS=274} [2022-07-22 21:43:00,596 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 161 predicate places. [2022-07-22 21:43:00,596 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 274 transitions, 1236 flow [2022-07-22 21:43:00,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:00,597 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:43:00,597 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:43:00,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 21:43:00,597 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:43:00,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:43:00,598 INFO L85 PathProgramCache]: Analyzing trace with hash -582070785, now seen corresponding path program 3 times [2022-07-22 21:43:00,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:43:00,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724852975] [2022-07-22 21:43:00,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:43:00,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:43:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:43:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:43:00,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:43:00,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724852975] [2022-07-22 21:43:00,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724852975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:43:00,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:43:00,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:43:00,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723811403] [2022-07-22 21:43:00,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:43:00,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:43:00,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:43:00,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:43:00,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:43:00,703 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-22 21:43:00,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 274 transitions, 1236 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:43:00,705 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:43:00,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-22 21:43:00,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand