./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/pthread-ext/29_conditionals_vs.i -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 c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:42:50,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:42:50,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:42:50,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:42:50,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:42:50,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:42:50,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:42:50,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:42:50,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:42:50,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:42:50,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:42:50,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:42:50,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:42:50,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:42:50,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:42:50,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:42:50,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:42:50,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:42:50,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:42:50,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:42:50,693 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:42:50,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:42:50,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:42:50,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:42:50,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:42:50,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:42:50,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:42:50,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:42:50,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:42:50,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:42:50,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:42:50,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:42:50,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:42:50,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:42:50,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:42:50,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:42:50,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:42:50,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:42:50,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:42:50,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:42:50,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:42:50,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:42:50,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:42:50,739 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:42:50,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:42:50,740 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:42:50,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:42:50,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:42:50,741 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:42:50,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:42:50,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:42:50,742 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:42:50,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:42:50,743 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:42:50,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:42:50,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:42:50,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:42:50,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:42:50,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:42:50,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:42:50,745 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:42:50,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:42:50,745 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:42:50,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:42:50,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:42:50,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:42:50,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:42:50,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:42:50,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:42:50,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:42:50,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:42:50,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:42:50,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:42:50,747 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:42:50,748 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:42:50,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:42:50,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2022-07-13 21:42:50,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:42:50,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:42:50,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:42:50,981 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:42:50,982 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:42:50,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2022-07-13 21:42:51,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25642db31/0d2fdf2fc3d44c56b5d6039746e734b6/FLAGcfad865aa [2022-07-13 21:42:51,492 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:42:51,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2022-07-13 21:42:51,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25642db31/0d2fdf2fc3d44c56b5d6039746e734b6/FLAGcfad865aa [2022-07-13 21:42:51,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25642db31/0d2fdf2fc3d44c56b5d6039746e734b6 [2022-07-13 21:42:51,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:42:51,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:42:51,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:42:51,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:42:51,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:42:51,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:42:51" (1/1) ... [2022-07-13 21:42:51,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f9060c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:51, skipping insertion in model container [2022-07-13 21:42:51,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:42:51" (1/1) ... [2022-07-13 21:42:51,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:42:51,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:42:52,147 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/pthread-ext/29_conditionals_vs.i[30422,30435] [2022-07-13 21:42:52,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:42:52,160 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:42:52,191 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/pthread-ext/29_conditionals_vs.i[30422,30435] [2022-07-13 21:42:52,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:42:52,224 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:42:52,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:52 WrapperNode [2022-07-13 21:42:52,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:42:52,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:42:52,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:42:52,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:42:52,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:52" (1/1) ... [2022-07-13 21:42:52,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:52" (1/1) ... [2022-07-13 21:42:52,280 INFO L137 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 59 [2022-07-13 21:42:52,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:42:52,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:42:52,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:42:52,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:42:52,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:52" (1/1) ... [2022-07-13 21:42:52,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:52" (1/1) ... [2022-07-13 21:42:52,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:52" (1/1) ... [2022-07-13 21:42:52,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:52" (1/1) ... [2022-07-13 21:42:52,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:52" (1/1) ... [2022-07-13 21:42:52,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:52" (1/1) ... [2022-07-13 21:42:52,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:52" (1/1) ... [2022-07-13 21:42:52,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:42:52,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:42:52,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:42:52,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:42:52,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:52" (1/1) ... [2022-07-13 21:42:52,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:42:52,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:42:52,348 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) [2022-07-13 21:42:52,372 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 [2022-07-13 21:42:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-13 21:42:52,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-13 21:42:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:42:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:42:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:42:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:42:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:42:52,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:42:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:42:52,393 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:42:52,524 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:42:52,526 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:42:52,718 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:42:52,749 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:42:52,753 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 21:42:52,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:42:52 BoogieIcfgContainer [2022-07-13 21:42:52,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:42:52,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:42:52,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:42:52,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:42:52,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:42:51" (1/3) ... [2022-07-13 21:42:52,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a19c583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:42:52, skipping insertion in model container [2022-07-13 21:42:52,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:42:52" (2/3) ... [2022-07-13 21:42:52,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a19c583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:42:52, skipping insertion in model container [2022-07-13 21:42:52,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:42:52" (3/3) ... [2022-07-13 21:42:52,764 INFO L111 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2022-07-13 21:42:52,769 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:42:52,776 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:42:52,777 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 21:42:52,777 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:42:52,843 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:42:52,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 56 transitions, 117 flow [2022-07-13 21:42:52,901 INFO L129 PetriNetUnfolder]: 6/67 cut-off events. [2022-07-13 21:42:52,901 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:42:52,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 6/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 40. Up to 4 conditions per place. [2022-07-13 21:42:52,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 56 transitions, 117 flow [2022-07-13 21:42:52,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 56 transitions, 117 flow [2022-07-13 21:42:52,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:42:52,921 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@5e8e80bf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@51ea8c8e [2022-07-13 21:42:52,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 21:42:52,930 INFO L129 PetriNetUnfolder]: 2/43 cut-off events. [2022-07-13 21:42:52,931 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:42:52,931 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:52,932 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:42:52,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:42:52,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:52,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1552839894, now seen corresponding path program 1 times [2022-07-13 21:42:52,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:52,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43177440] [2022-07-13 21:42:52,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:52,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:53,030 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:42:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:53,069 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:42:53,071 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:42:53,072 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-07-13 21:42:53,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-07-13 21:42:53,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-07-13 21:42:53,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:42:53,074 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-13 21:42:53,077 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:42:53,077 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-13 21:42:53,094 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:42:53,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 84 transitions, 180 flow [2022-07-13 21:42:53,116 INFO L129 PetriNetUnfolder]: 11/108 cut-off events. [2022-07-13 21:42:53,117 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 21:42:53,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 108 events. 11/108 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 68. Up to 6 conditions per place. [2022-07-13 21:42:53,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 84 transitions, 180 flow [2022-07-13 21:42:53,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 84 transitions, 180 flow [2022-07-13 21:42:53,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:42:53,125 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@5e8e80bf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@51ea8c8e [2022-07-13 21:42:53,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 21:42:53,137 INFO L129 PetriNetUnfolder]: 4/72 cut-off events. [2022-07-13 21:42:53,137 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 21:42:53,137 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:53,137 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:42:53,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-13 21:42:53,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:53,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1549820851, now seen corresponding path program 1 times [2022-07-13 21:42:53,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:53,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770161921] [2022-07-13 21:42:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:53,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:53,164 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:42:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:53,200 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:42:53,201 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:42:53,201 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-13 21:42:53,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-13 21:42:53,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-07-13 21:42:53,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-13 21:42:53,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:42:53,203 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-13 21:42:53,204 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:42:53,204 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-13 21:42:53,226 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:42:53,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 106 places, 112 transitions, 245 flow [2022-07-13 21:42:53,263 INFO L129 PetriNetUnfolder]: 16/149 cut-off events. [2022-07-13 21:42:53,263 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-13 21:42:53,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 149 events. 16/149 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 335 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 112. Up to 8 conditions per place. [2022-07-13 21:42:53,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 112 transitions, 245 flow [2022-07-13 21:42:53,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 112 transitions, 245 flow [2022-07-13 21:42:53,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:42:53,269 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@5e8e80bf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@51ea8c8e [2022-07-13 21:42:53,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-13 21:42:53,279 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2022-07-13 21:42:53,279 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-13 21:42:53,279 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:53,279 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] [2022-07-13 21:42:53,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-13 21:42:53,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:53,280 INFO L85 PathProgramCache]: Analyzing trace with hash 289875179, now seen corresponding path program 1 times [2022-07-13 21:42:53,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:53,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650360900] [2022-07-13 21:42:53,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:53,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:42:53,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:42:53,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:42:53,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650360900] [2022-07-13 21:42:53,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650360900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:42:53,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:42:53,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:42:53,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764592828] [2022-07-13 21:42:53,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:42:53,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:42:53,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:42:53,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:42:53,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:42:53,398 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2022-07-13 21:42:53,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 112 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:53,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:42:53,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2022-07-13 21:42:53,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:42:53,616 INFO L129 PetriNetUnfolder]: 199/815 cut-off events. [2022-07-13 21:42:53,616 INFO L130 PetriNetUnfolder]: For 220/220 co-relation queries the response was YES. [2022-07-13 21:42:53,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1267 conditions, 815 events. 199/815 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5408 event pairs, 96 based on Foata normal form. 189/868 useless extension candidates. Maximal degree in co-relation 296. Up to 175 conditions per place. [2022-07-13 21:42:53,628 INFO L132 encePairwiseOnDemand]: 104/112 looper letters, 20 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2022-07-13 21:42:53,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 107 transitions, 291 flow [2022-07-13 21:42:53,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:42:53,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:42:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2022-07-13 21:42:53,646 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9017857142857143 [2022-07-13 21:42:53,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2022-07-13 21:42:53,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2022-07-13 21:42:53,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:42:53,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2022-07-13 21:42:53,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:53,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:53,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:53,665 INFO L186 Difference]: Start difference. First operand has 106 places, 112 transitions, 245 flow. Second operand 3 states and 303 transitions. [2022-07-13 21:42:53,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 107 transitions, 291 flow [2022-07-13 21:42:53,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 107 transitions, 283 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-07-13 21:42:53,680 INFO L242 Difference]: Finished difference. Result has 101 places, 100 transitions, 227 flow [2022-07-13 21:42:53,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=101, PETRI_TRANSITIONS=100} [2022-07-13 21:42:53,685 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -5 predicate places. [2022-07-13 21:42:53,685 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 100 transitions, 227 flow [2022-07-13 21:42:53,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:53,687 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:53,687 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] [2022-07-13 21:42:53,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:42:53,688 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-13 21:42:53,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:53,689 INFO L85 PathProgramCache]: Analyzing trace with hash 290827468, now seen corresponding path program 1 times [2022-07-13 21:42:53,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:53,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285797493] [2022-07-13 21:42:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:53,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:42:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:42:53,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:42:53,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285797493] [2022-07-13 21:42:53,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285797493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:42:53,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:42:53,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:42:53,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371671377] [2022-07-13 21:42:53,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:42:53,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:42:53,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:42:53,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:42:53,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:42:53,764 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2022-07-13 21:42:53,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 100 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:53,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:42:53,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2022-07-13 21:42:53,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:42:53,896 INFO L129 PetriNetUnfolder]: 186/802 cut-off events. [2022-07-13 21:42:53,897 INFO L130 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2022-07-13 21:42:53,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1248 conditions, 802 events. 186/802 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5393 event pairs, 96 based on Foata normal form. 13/690 useless extension candidates. Maximal degree in co-relation 938. Up to 175 conditions per place. [2022-07-13 21:42:53,907 INFO L132 encePairwiseOnDemand]: 110/112 looper letters, 20 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2022-07-13 21:42:53,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 106 transitions, 287 flow [2022-07-13 21:42:53,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:42:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:42:53,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2022-07-13 21:42:53,910 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8690476190476191 [2022-07-13 21:42:53,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2022-07-13 21:42:53,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2022-07-13 21:42:53,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:42:53,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2022-07-13 21:42:53,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:53,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:53,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:53,915 INFO L186 Difference]: Start difference. First operand has 101 places, 100 transitions, 227 flow. Second operand 3 states and 292 transitions. [2022-07-13 21:42:53,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 106 transitions, 287 flow [2022-07-13 21:42:53,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 106 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:42:53,920 INFO L242 Difference]: Finished difference. Result has 102 places, 99 transitions, 222 flow [2022-07-13 21:42:53,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=102, PETRI_TRANSITIONS=99} [2022-07-13 21:42:53,922 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -4 predicate places. [2022-07-13 21:42:53,922 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 99 transitions, 222 flow [2022-07-13 21:42:53,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:53,922 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:53,922 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] [2022-07-13 21:42:53,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:42:53,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-13 21:42:53,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:53,925 INFO L85 PathProgramCache]: Analyzing trace with hash 290828491, now seen corresponding path program 1 times [2022-07-13 21:42:53,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:53,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001490385] [2022-07-13 21:42:53,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:53,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:42:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:42:53,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:42:53,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001490385] [2022-07-13 21:42:53,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001490385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:42:53,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:42:53,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:42:53,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763851063] [2022-07-13 21:42:53,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:42:53,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:42:53,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:42:53,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:42:53,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:42:53,972 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2022-07-13 21:42:53,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 99 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:53,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:42:53,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2022-07-13 21:42:53,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:42:54,136 INFO L129 PetriNetUnfolder]: 276/1095 cut-off events. [2022-07-13 21:42:54,137 INFO L130 PetriNetUnfolder]: For 157/157 co-relation queries the response was YES. [2022-07-13 21:42:54,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1715 conditions, 1095 events. 276/1095 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8236 event pairs, 150 based on Foata normal form. 0/966 useless extension candidates. Maximal degree in co-relation 1572. Up to 268 conditions per place. [2022-07-13 21:42:54,149 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 23 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2022-07-13 21:42:54,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 105 transitions, 294 flow [2022-07-13 21:42:54,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:42:54,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:42:54,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2022-07-13 21:42:54,153 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8363095238095238 [2022-07-13 21:42:54,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2022-07-13 21:42:54,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2022-07-13 21:42:54,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:42:54,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2022-07-13 21:42:54,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:54,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:54,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:54,160 INFO L186 Difference]: Start difference. First operand has 102 places, 99 transitions, 222 flow. Second operand 3 states and 281 transitions. [2022-07-13 21:42:54,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 105 transitions, 294 flow [2022-07-13 21:42:54,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 105 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:42:54,166 INFO L242 Difference]: Finished difference. Result has 103 places, 98 transitions, 223 flow [2022-07-13 21:42:54,167 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2022-07-13 21:42:54,168 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -3 predicate places. [2022-07-13 21:42:54,168 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 223 flow [2022-07-13 21:42:54,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:54,169 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:54,169 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] [2022-07-13 21:42:54,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:42:54,170 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-13 21:42:54,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:54,170 INFO L85 PathProgramCache]: Analyzing trace with hash 289874156, now seen corresponding path program 1 times [2022-07-13 21:42:54,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:54,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118672513] [2022-07-13 21:42:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:54,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:42:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:42:54,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:42:54,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118672513] [2022-07-13 21:42:54,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118672513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:42:54,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:42:54,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:42:54,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114513996] [2022-07-13 21:42:54,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:42:54,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:42:54,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:42:54,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:42:54,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:42:54,240 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2022-07-13 21:42:54,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:54,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:42:54,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2022-07-13 21:42:54,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:42:54,392 INFO L129 PetriNetUnfolder]: 258/1051 cut-off events. [2022-07-13 21:42:54,392 INFO L130 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2022-07-13 21:42:54,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1647 conditions, 1051 events. 258/1051 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7876 event pairs, 150 based on Foata normal form. 13/961 useless extension candidates. Maximal degree in co-relation 1511. Up to 268 conditions per place. [2022-07-13 21:42:54,401 INFO L132 encePairwiseOnDemand]: 110/112 looper letters, 23 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2022-07-13 21:42:54,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 103 transitions, 289 flow [2022-07-13 21:42:54,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:42:54,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:42:54,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2022-07-13 21:42:54,404 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-07-13 21:42:54,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2022-07-13 21:42:54,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2022-07-13 21:42:54,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:42:54,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2022-07-13 21:42:54,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:54,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:54,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:54,407 INFO L186 Difference]: Start difference. First operand has 103 places, 98 transitions, 223 flow. Second operand 3 states and 280 transitions. [2022-07-13 21:42:54,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 103 transitions, 289 flow [2022-07-13 21:42:54,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:42:54,412 INFO L242 Difference]: Finished difference. Result has 102 places, 96 transitions, 218 flow [2022-07-13 21:42:54,412 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=102, PETRI_TRANSITIONS=96} [2022-07-13 21:42:54,414 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -4 predicate places. [2022-07-13 21:42:54,415 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 96 transitions, 218 flow [2022-07-13 21:42:54,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:54,415 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:54,415 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:42:54,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:42:54,416 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-13 21:42:54,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:54,416 INFO L85 PathProgramCache]: Analyzing trace with hash -337068427, now seen corresponding path program 1 times [2022-07-13 21:42:54,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:54,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423175136] [2022-07-13 21:42:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:54,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:54,450 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:42:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:54,464 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:42:54,464 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:42:54,464 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-13 21:42:54,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-13 21:42:54,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-07-13 21:42:54,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-13 21:42:54,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-13 21:42:54,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:42:54,466 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-13 21:42:54,466 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:42:54,466 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-13 21:42:54,491 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:42:54,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 140 transitions, 312 flow [2022-07-13 21:42:54,514 INFO L129 PetriNetUnfolder]: 21/190 cut-off events. [2022-07-13 21:42:54,514 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-13 21:42:54,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 190 events. 21/190 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 480 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 157. Up to 10 conditions per place. [2022-07-13 21:42:54,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 140 transitions, 312 flow [2022-07-13 21:42:54,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 140 transitions, 312 flow [2022-07-13 21:42:54,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:42:54,528 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@5e8e80bf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@51ea8c8e [2022-07-13 21:42:54,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-13 21:42:54,538 INFO L129 PetriNetUnfolder]: 8/90 cut-off events. [2022-07-13 21:42:54,538 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-13 21:42:54,539 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:54,539 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] [2022-07-13 21:42:54,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-13 21:42:54,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:54,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1049301266, now seen corresponding path program 1 times [2022-07-13 21:42:54,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:54,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910580231] [2022-07-13 21:42:54,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:54,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:42:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:42:54,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:42:54,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910580231] [2022-07-13 21:42:54,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910580231] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:42:54,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:42:54,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:42:54,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633033415] [2022-07-13 21:42:54,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:42:54,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:42:54,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:42:54,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:42:54,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:42:54,588 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-13 21:42:54,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 140 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:54,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:42:54,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-13 21:42:54,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:42:55,043 INFO L129 PetriNetUnfolder]: 904/3181 cut-off events. [2022-07-13 21:42:55,044 INFO L130 PetriNetUnfolder]: For 1276/1276 co-relation queries the response was YES. [2022-07-13 21:42:55,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5003 conditions, 3181 events. 904/3181 cut-off events. For 1276/1276 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 28092 event pairs, 447 based on Foata normal form. 710/3438 useless extension candidates. Maximal degree in co-relation 1285. Up to 688 conditions per place. [2022-07-13 21:42:55,092 INFO L132 encePairwiseOnDemand]: 131/140 looper letters, 26 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2022-07-13 21:42:55,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 136 transitions, 381 flow [2022-07-13 21:42:55,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:42:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:42:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2022-07-13 21:42:55,095 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-07-13 21:42:55,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2022-07-13 21:42:55,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2022-07-13 21:42:55,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:42:55,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2022-07-13 21:42:55,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:55,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:55,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:55,098 INFO L186 Difference]: Start difference. First operand has 132 places, 140 transitions, 312 flow. Second operand 3 states and 380 transitions. [2022-07-13 21:42:55,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 136 transitions, 381 flow [2022-07-13 21:42:55,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 136 transitions, 363 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-07-13 21:42:55,104 INFO L242 Difference]: Finished difference. Result has 126 places, 126 transitions, 284 flow [2022-07-13 21:42:55,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=126, PETRI_TRANSITIONS=126} [2022-07-13 21:42:55,106 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -6 predicate places. [2022-07-13 21:42:55,106 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 126 transitions, 284 flow [2022-07-13 21:42:55,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:55,106 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:55,107 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] [2022-07-13 21:42:55,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:42:55,107 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-13 21:42:55,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1050253555, now seen corresponding path program 1 times [2022-07-13 21:42:55,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:55,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993977995] [2022-07-13 21:42:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:55,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:42:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:42:55,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:42:55,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993977995] [2022-07-13 21:42:55,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993977995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:42:55,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:42:55,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:42:55,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914037236] [2022-07-13 21:42:55,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:42:55,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:42:55,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:42:55,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:42:55,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:42:55,158 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-13 21:42:55,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 126 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:55,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:42:55,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-13 21:42:55,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:42:55,556 INFO L129 PetriNetUnfolder]: 864/3141 cut-off events. [2022-07-13 21:42:55,556 INFO L130 PetriNetUnfolder]: For 542/542 co-relation queries the response was YES. [2022-07-13 21:42:55,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4758 conditions, 3141 events. 864/3141 cut-off events. For 542/542 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 28007 event pairs, 447 based on Foata normal form. 40/2758 useless extension candidates. Maximal degree in co-relation 3967. Up to 688 conditions per place. [2022-07-13 21:42:55,594 INFO L132 encePairwiseOnDemand]: 138/140 looper letters, 26 selfloop transitions, 1 changer transitions 0/135 dead transitions. [2022-07-13 21:42:55,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 135 transitions, 367 flow [2022-07-13 21:42:55,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:42:55,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:42:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2022-07-13 21:42:55,596 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8738095238095238 [2022-07-13 21:42:55,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2022-07-13 21:42:55,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2022-07-13 21:42:55,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:42:55,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2022-07-13 21:42:55,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:55,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:55,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:55,599 INFO L186 Difference]: Start difference. First operand has 126 places, 126 transitions, 284 flow. Second operand 3 states and 367 transitions. [2022-07-13 21:42:55,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 135 transitions, 367 flow [2022-07-13 21:42:55,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 135 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:42:55,602 INFO L242 Difference]: Finished difference. Result has 127 places, 125 transitions, 279 flow [2022-07-13 21:42:55,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=127, PETRI_TRANSITIONS=125} [2022-07-13 21:42:55,603 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-07-13 21:42:55,604 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 125 transitions, 279 flow [2022-07-13 21:42:55,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:55,604 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:55,604 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] [2022-07-13 21:42:55,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:42:55,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-13 21:42:55,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:55,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1050254578, now seen corresponding path program 1 times [2022-07-13 21:42:55,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:55,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76210930] [2022-07-13 21:42:55,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:55,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:42:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:42:55,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:42:55,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76210930] [2022-07-13 21:42:55,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76210930] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:42:55,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:42:55,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:42:55,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487517953] [2022-07-13 21:42:55,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:42:55,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:42:55,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:42:55,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:42:55,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:42:55,628 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-13 21:42:55,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 125 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:55,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:42:55,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-13 21:42:55,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:42:56,269 INFO L129 PetriNetUnfolder]: 1281/4525 cut-off events. [2022-07-13 21:42:56,270 INFO L130 PetriNetUnfolder]: For 508/508 co-relation queries the response was YES. [2022-07-13 21:42:56,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6757 conditions, 4525 events. 1281/4525 cut-off events. For 508/508 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 44655 event pairs, 690 based on Foata normal form. 0/3990 useless extension candidates. Maximal degree in co-relation 6613. Up to 1051 conditions per place. [2022-07-13 21:42:56,318 INFO L132 encePairwiseOnDemand]: 137/140 looper letters, 29 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-07-13 21:42:56,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 134 transitions, 374 flow [2022-07-13 21:42:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:42:56,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:42:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2022-07-13 21:42:56,320 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8476190476190476 [2022-07-13 21:42:56,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2022-07-13 21:42:56,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2022-07-13 21:42:56,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:42:56,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2022-07-13 21:42:56,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:56,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:56,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:56,323 INFO L186 Difference]: Start difference. First operand has 127 places, 125 transitions, 279 flow. Second operand 3 states and 356 transitions. [2022-07-13 21:42:56,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 134 transitions, 374 flow [2022-07-13 21:42:56,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 134 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:42:56,327 INFO L242 Difference]: Finished difference. Result has 128 places, 124 transitions, 280 flow [2022-07-13 21:42:56,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2022-07-13 21:42:56,328 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -4 predicate places. [2022-07-13 21:42:56,328 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 280 flow [2022-07-13 21:42:56,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:56,329 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:56,329 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:42:56,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:42:56,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-13 21:42:56,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:56,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1049300243, now seen corresponding path program 1 times [2022-07-13 21:42:56,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:56,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336728617] [2022-07-13 21:42:56,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:56,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:42:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:42:56,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:42:56,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336728617] [2022-07-13 21:42:56,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336728617] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:42:56,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:42:56,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:42:56,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851956019] [2022-07-13 21:42:56,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:42:56,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:42:56,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:42:56,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:42:56,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:42:56,353 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-13 21:42:56,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:56,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:42:56,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-13 21:42:56,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:42:56,859 INFO L129 PetriNetUnfolder]: 1200/4364 cut-off events. [2022-07-13 21:42:56,859 INFO L130 PetriNetUnfolder]: For 539/539 co-relation queries the response was YES. [2022-07-13 21:42:56,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6506 conditions, 4364 events. 1200/4364 cut-off events. For 539/539 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 42776 event pairs, 690 based on Foata normal form. 40/3951 useless extension candidates. Maximal degree in co-relation 6369. Up to 1051 conditions per place. [2022-07-13 21:42:56,989 INFO L132 encePairwiseOnDemand]: 138/140 looper letters, 29 selfloop transitions, 1 changer transitions 0/132 dead transitions. [2022-07-13 21:42:56,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 132 transitions, 369 flow [2022-07-13 21:42:56,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:42:56,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:42:56,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2022-07-13 21:42:56,991 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2022-07-13 21:42:56,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2022-07-13 21:42:56,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2022-07-13 21:42:56,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:42:56,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2022-07-13 21:42:56,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:56,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:56,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:56,993 INFO L186 Difference]: Start difference. First operand has 128 places, 124 transitions, 280 flow. Second operand 3 states and 355 transitions. [2022-07-13 21:42:56,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 132 transitions, 369 flow [2022-07-13 21:42:56,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 132 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:42:56,998 INFO L242 Difference]: Finished difference. Result has 127 places, 122 transitions, 275 flow [2022-07-13 21:42:56,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=127, PETRI_TRANSITIONS=122} [2022-07-13 21:42:56,999 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-07-13 21:42:56,999 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 122 transitions, 275 flow [2022-07-13 21:42:57,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:57,000 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:57,000 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:42:57,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:42:57,001 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-13 21:42:57,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:57,001 INFO L85 PathProgramCache]: Analyzing trace with hash -344456956, now seen corresponding path program 1 times [2022-07-13 21:42:57,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:57,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639401582] [2022-07-13 21:42:57,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:57,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:42:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:42:57,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:42:57,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639401582] [2022-07-13 21:42:57,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639401582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:42:57,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:42:57,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:42:57,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621751007] [2022-07-13 21:42:57,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:42:57,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:42:57,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:42:57,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:42:57,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:42:57,029 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-13 21:42:57,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 122 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:57,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:42:57,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-13 21:42:57,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:42:57,673 INFO L129 PetriNetUnfolder]: 1850/5480 cut-off events. [2022-07-13 21:42:57,674 INFO L130 PetriNetUnfolder]: For 685/685 co-relation queries the response was YES. [2022-07-13 21:42:57,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8599 conditions, 5480 events. 1850/5480 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 53104 event pairs, 1062 based on Foata normal form. 0/4599 useless extension candidates. Maximal degree in co-relation 6356. Up to 1587 conditions per place. [2022-07-13 21:42:57,748 INFO L132 encePairwiseOnDemand]: 135/140 looper letters, 30 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2022-07-13 21:42:57,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 133 transitions, 373 flow [2022-07-13 21:42:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:42:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:42:57,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2022-07-13 21:42:57,750 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8547619047619047 [2022-07-13 21:42:57,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2022-07-13 21:42:57,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2022-07-13 21:42:57,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:42:57,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2022-07-13 21:42:57,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:57,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:57,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:57,754 INFO L186 Difference]: Start difference. First operand has 127 places, 122 transitions, 275 flow. Second operand 3 states and 359 transitions. [2022-07-13 21:42:57,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 133 transitions, 373 flow [2022-07-13 21:42:57,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 133 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:42:57,757 INFO L242 Difference]: Finished difference. Result has 130 places, 124 transitions, 298 flow [2022-07-13 21:42:57,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=130, PETRI_TRANSITIONS=124} [2022-07-13 21:42:57,758 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -2 predicate places. [2022-07-13 21:42:57,758 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 298 flow [2022-07-13 21:42:57,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:57,759 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:57,759 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:42:57,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:42:57,759 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-13 21:42:57,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:57,760 INFO L85 PathProgramCache]: Analyzing trace with hash -344455933, now seen corresponding path program 1 times [2022-07-13 21:42:57,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:57,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908669483] [2022-07-13 21:42:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:57,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:42:57,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:42:57,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:42:57,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908669483] [2022-07-13 21:42:57,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908669483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:42:57,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:42:57,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:42:57,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124761626] [2022-07-13 21:42:57,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:42:57,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:42:57,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:42:57,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:42:57,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:42:57,785 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-13 21:42:57,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 124 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:57,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:42:57,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-13 21:42:57,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:42:58,188 INFO L129 PetriNetUnfolder]: 1258/3752 cut-off events. [2022-07-13 21:42:58,189 INFO L130 PetriNetUnfolder]: For 625/625 co-relation queries the response was YES. [2022-07-13 21:42:58,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6308 conditions, 3752 events. 1258/3752 cut-off events. For 625/625 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 33737 event pairs, 618 based on Foata normal form. 0/3172 useless extension candidates. Maximal degree in co-relation 4521. Up to 935 conditions per place. [2022-07-13 21:42:58,233 INFO L132 encePairwiseOnDemand]: 137/140 looper letters, 25 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2022-07-13 21:42:58,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 133 transitions, 378 flow [2022-07-13 21:42:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:42:58,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:42:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2022-07-13 21:42:58,236 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8738095238095238 [2022-07-13 21:42:58,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2022-07-13 21:42:58,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2022-07-13 21:42:58,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:42:58,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2022-07-13 21:42:58,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:58,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:58,239 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:58,239 INFO L186 Difference]: Start difference. First operand has 130 places, 124 transitions, 298 flow. Second operand 3 states and 367 transitions. [2022-07-13 21:42:58,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 133 transitions, 378 flow [2022-07-13 21:42:58,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 133 transitions, 373 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-13 21:42:58,257 INFO L242 Difference]: Finished difference. Result has 133 places, 124 transitions, 303 flow [2022-07-13 21:42:58,258 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=133, PETRI_TRANSITIONS=124} [2022-07-13 21:42:58,258 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 1 predicate places. [2022-07-13 21:42:58,258 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 124 transitions, 303 flow [2022-07-13 21:42:58,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:58,259 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:58,259 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:42:58,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:42:58,259 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-13 21:42:58,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:58,260 INFO L85 PathProgramCache]: Analyzing trace with hash -343503644, now seen corresponding path program 1 times [2022-07-13 21:42:58,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:58,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394508792] [2022-07-13 21:42:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:58,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:42:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:42:58,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:42:58,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394508792] [2022-07-13 21:42:58,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394508792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:42:58,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:42:58,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:42:58,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266611193] [2022-07-13 21:42:58,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:42:58,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:42:58,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:42:58,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:42:58,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:42:58,283 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-07-13 21:42:58,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 124 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:58,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:42:58,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-07-13 21:42:58,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:42:58,677 INFO L129 PetriNetUnfolder]: 1095/3433 cut-off events. [2022-07-13 21:42:58,677 INFO L130 PetriNetUnfolder]: For 677/677 co-relation queries the response was YES. [2022-07-13 21:42:58,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5779 conditions, 3433 events. 1095/3433 cut-off events. For 677/677 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 30679 event pairs, 618 based on Foata normal form. 52/2998 useless extension candidates. Maximal degree in co-relation 4035. Up to 935 conditions per place. [2022-07-13 21:42:58,724 INFO L132 encePairwiseOnDemand]: 138/140 looper letters, 25 selfloop transitions, 1 changer transitions 0/130 dead transitions. [2022-07-13 21:42:58,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 368 flow [2022-07-13 21:42:58,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:42:58,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:42:58,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2022-07-13 21:42:58,727 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8714285714285714 [2022-07-13 21:42:58,727 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2022-07-13 21:42:58,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2022-07-13 21:42:58,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:42:58,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2022-07-13 21:42:58,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:58,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:58,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:58,730 INFO L186 Difference]: Start difference. First operand has 133 places, 124 transitions, 303 flow. Second operand 3 states and 366 transitions. [2022-07-13 21:42:58,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 368 flow [2022-07-13 21:42:58,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 130 transitions, 361 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-13 21:42:58,737 INFO L242 Difference]: Finished difference. Result has 132 places, 121 transitions, 283 flow [2022-07-13 21:42:58,737 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=132, PETRI_TRANSITIONS=121} [2022-07-13 21:42:58,738 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 0 predicate places. [2022-07-13 21:42:58,738 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 121 transitions, 283 flow [2022-07-13 21:42:58,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:58,738 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:58,739 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:42:58,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:42:58,739 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-13 21:42:58,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:58,740 INFO L85 PathProgramCache]: Analyzing trace with hash -343502621, now seen corresponding path program 1 times [2022-07-13 21:42:58,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:58,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652317616] [2022-07-13 21:42:58,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:58,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:42:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:42:58,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:42:58,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652317616] [2022-07-13 21:42:58,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652317616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:42:58,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:42:58,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:42:58,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464331643] [2022-07-13 21:42:58,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:42:58,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:42:58,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:42:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:42:58,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:42:58,765 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-07-13 21:42:58,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:58,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:42:58,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-07-13 21:42:58,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:42:59,298 INFO L129 PetriNetUnfolder]: 1500/4650 cut-off events. [2022-07-13 21:42:59,298 INFO L130 PetriNetUnfolder]: For 589/589 co-relation queries the response was YES. [2022-07-13 21:42:59,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7476 conditions, 4650 events. 1500/4650 cut-off events. For 589/589 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 44613 event pairs, 951 based on Foata normal form. 0/4026 useless extension candidates. Maximal degree in co-relation 6407. Up to 1424 conditions per place. [2022-07-13 21:42:59,344 INFO L132 encePairwiseOnDemand]: 138/140 looper letters, 28 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2022-07-13 21:42:59,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 128 transitions, 364 flow [2022-07-13 21:42:59,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:42:59,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:42:59,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-07-13 21:42:59,346 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8428571428571429 [2022-07-13 21:42:59,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-07-13 21:42:59,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-07-13 21:42:59,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:42:59,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-07-13 21:42:59,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:59,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:59,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:59,349 INFO L186 Difference]: Start difference. First operand has 132 places, 121 transitions, 283 flow. Second operand 3 states and 354 transitions. [2022-07-13 21:42:59,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 128 transitions, 364 flow [2022-07-13 21:42:59,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 128 transitions, 363 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:42:59,353 INFO L242 Difference]: Finished difference. Result has 131 places, 119 transitions, 279 flow [2022-07-13 21:42:59,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2022-07-13 21:42:59,354 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, -1 predicate places. [2022-07-13 21:42:59,354 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 279 flow [2022-07-13 21:42:59,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:59,354 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:59,354 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:42:59,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:42:59,355 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-13 21:42:59,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:59,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1821018244, now seen corresponding path program 1 times [2022-07-13 21:42:59,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:59,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842701563] [2022-07-13 21:42:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:59,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:59,367 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:42:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:42:59,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:42:59,378 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:42:59,378 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-07-13 21:42:59,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-13 21:42:59,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-07-13 21:42:59,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-13 21:42:59,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-13 21:42:59,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-13 21:42:59,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:42:59,379 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:42:59,380 WARN L231 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:42:59,380 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-07-13 21:42:59,402 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:42:59,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 158 places, 168 transitions, 381 flow [2022-07-13 21:42:59,424 INFO L129 PetriNetUnfolder]: 26/231 cut-off events. [2022-07-13 21:42:59,424 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-13 21:42:59,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 231 events. 26/231 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 624 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 203. Up to 12 conditions per place. [2022-07-13 21:42:59,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 168 transitions, 381 flow [2022-07-13 21:42:59,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 168 transitions, 381 flow [2022-07-13 21:42:59,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:42:59,429 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@5e8e80bf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@51ea8c8e [2022-07-13 21:42:59,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-13 21:42:59,433 INFO L129 PetriNetUnfolder]: 6/87 cut-off events. [2022-07-13 21:42:59,433 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-13 21:42:59,433 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:42:59,434 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] [2022-07-13 21:42:59,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:42:59,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:42:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash 47724502, now seen corresponding path program 1 times [2022-07-13 21:42:59,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:42:59,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856785816] [2022-07-13 21:42:59,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:42:59,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:42:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:42:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:42:59,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:42:59,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856785816] [2022-07-13 21:42:59,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856785816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:42:59,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:42:59,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:42:59,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009083982] [2022-07-13 21:42:59,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:42:59,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:42:59,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:42:59,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:42:59,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:42:59,456 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-13 21:42:59,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 168 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:42:59,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:42:59,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-13 21:42:59,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:01,436 INFO L129 PetriNetUnfolder]: 5732/17923 cut-off events. [2022-07-13 21:43:01,437 INFO L130 PetriNetUnfolder]: For 9815/9815 co-relation queries the response was YES. [2022-07-13 21:43:01,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28687 conditions, 17923 events. 5732/17923 cut-off events. For 9815/9815 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 209285 event pairs, 3120 based on Foata normal form. 3833/19472 useless extension candidates. Maximal degree in co-relation 8983. Up to 4331 conditions per place. [2022-07-13 21:43:01,651 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 37 selfloop transitions, 3 changer transitions 0/166 dead transitions. [2022-07-13 21:43:01,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 166 transitions, 489 flow [2022-07-13 21:43:01,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:01,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2022-07-13 21:43:01,657 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8908730158730159 [2022-07-13 21:43:01,657 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2022-07-13 21:43:01,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2022-07-13 21:43:01,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:01,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2022-07-13 21:43:01,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:01,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:01,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:01,663 INFO L186 Difference]: Start difference. First operand has 158 places, 168 transitions, 381 flow. Second operand 3 states and 449 transitions. [2022-07-13 21:43:01,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 166 transitions, 489 flow [2022-07-13 21:43:01,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 166 transitions, 457 flow, removed 16 selfloop flow, removed 0 redundant places. [2022-07-13 21:43:01,671 INFO L242 Difference]: Finished difference. Result has 151 places, 153 transitions, 351 flow [2022-07-13 21:43:01,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=151, PETRI_TRANSITIONS=153} [2022-07-13 21:43:01,672 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -7 predicate places. [2022-07-13 21:43:01,673 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 153 transitions, 351 flow [2022-07-13 21:43:01,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:01,673 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:01,673 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:43:01,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:43:01,674 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:43:01,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:01,674 INFO L85 PathProgramCache]: Analyzing trace with hash 48677814, now seen corresponding path program 1 times [2022-07-13 21:43:01,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:01,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968946719] [2022-07-13 21:43:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:01,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:01,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:43:01,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:01,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968946719] [2022-07-13 21:43:01,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968946719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:01,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:01,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:01,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879202741] [2022-07-13 21:43:01,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:01,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:01,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:01,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:01,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:01,717 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-13 21:43:01,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 153 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:01,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:01,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-13 21:43:01,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:02,997 INFO L129 PetriNetUnfolder]: 3846/12345 cut-off events. [2022-07-13 21:43:02,998 INFO L130 PetriNetUnfolder]: For 1335/1335 co-relation queries the response was YES. [2022-07-13 21:43:03,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18515 conditions, 12345 events. 3846/12345 cut-off events. For 1335/1335 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 136866 event pairs, 2148 based on Foata normal form. 0/10911 useless extension candidates. Maximal degree in co-relation 16165. Up to 2996 conditions per place. [2022-07-13 21:43:03,151 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 33 selfloop transitions, 1 changer transitions 0/165 dead transitions. [2022-07-13 21:43:03,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 165 transitions, 457 flow [2022-07-13 21:43:03,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:03,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:03,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2022-07-13 21:43:03,153 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.878968253968254 [2022-07-13 21:43:03,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2022-07-13 21:43:03,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2022-07-13 21:43:03,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:03,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2022-07-13 21:43:03,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:03,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:03,156 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:03,157 INFO L186 Difference]: Start difference. First operand has 151 places, 153 transitions, 351 flow. Second operand 3 states and 443 transitions. [2022-07-13 21:43:03,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 165 transitions, 457 flow [2022-07-13 21:43:03,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 165 transitions, 453 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-13 21:43:03,166 INFO L242 Difference]: Finished difference. Result has 153 places, 151 transitions, 342 flow [2022-07-13 21:43:03,166 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=153, PETRI_TRANSITIONS=151} [2022-07-13 21:43:03,167 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -5 predicate places. [2022-07-13 21:43:03,167 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 151 transitions, 342 flow [2022-07-13 21:43:03,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:03,167 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:03,168 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] [2022-07-13 21:43:03,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:43:03,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:43:03,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:03,168 INFO L85 PathProgramCache]: Analyzing trace with hash 48678837, now seen corresponding path program 1 times [2022-07-13 21:43:03,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:03,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025247856] [2022-07-13 21:43:03,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:03,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:43:03,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:03,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025247856] [2022-07-13 21:43:03,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025247856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:03,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:03,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:03,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499188161] [2022-07-13 21:43:03,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:03,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:03,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:03,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:03,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:03,191 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-13 21:43:03,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 151 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:03,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:03,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-13 21:43:03,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:04,916 INFO L129 PetriNetUnfolder]: 5166/16994 cut-off events. [2022-07-13 21:43:04,917 INFO L130 PetriNetUnfolder]: For 2032/2032 co-relation queries the response was YES. [2022-07-13 21:43:05,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25108 conditions, 16994 events. 5166/16994 cut-off events. For 2032/2032 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 199974 event pairs, 3120 based on Foata normal form. 0/15263 useless extension candidates. Maximal degree in co-relation 24960. Up to 4331 conditions per place. [2022-07-13 21:43:05,121 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 36 selfloop transitions, 1 changer transitions 0/163 dead transitions. [2022-07-13 21:43:05,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 163 transitions, 457 flow [2022-07-13 21:43:05,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:05,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:05,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2022-07-13 21:43:05,124 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8551587301587301 [2022-07-13 21:43:05,124 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2022-07-13 21:43:05,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2022-07-13 21:43:05,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:05,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2022-07-13 21:43:05,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:05,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:05,127 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:05,127 INFO L186 Difference]: Start difference. First operand has 153 places, 151 transitions, 342 flow. Second operand 3 states and 431 transitions. [2022-07-13 21:43:05,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 163 transitions, 457 flow [2022-07-13 21:43:05,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 163 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:43:05,140 INFO L242 Difference]: Finished difference. Result has 154 places, 150 transitions, 338 flow [2022-07-13 21:43:05,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=154, PETRI_TRANSITIONS=150} [2022-07-13 21:43:05,141 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -4 predicate places. [2022-07-13 21:43:05,141 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 150 transitions, 338 flow [2022-07-13 21:43:05,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:05,141 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:05,142 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] [2022-07-13 21:43:05,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:43:05,142 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:43:05,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:05,143 INFO L85 PathProgramCache]: Analyzing trace with hash 47725525, now seen corresponding path program 1 times [2022-07-13 21:43:05,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:05,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516491816] [2022-07-13 21:43:05,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:05,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:43:05,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:05,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516491816] [2022-07-13 21:43:05,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516491816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:05,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:05,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:05,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856883837] [2022-07-13 21:43:05,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:05,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:05,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:05,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:05,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:05,171 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-13 21:43:05,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 150 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:05,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:05,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-13 21:43:05,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:06,445 INFO L129 PetriNetUnfolder]: 3432/10702 cut-off events. [2022-07-13 21:43:06,446 INFO L130 PetriNetUnfolder]: For 1202/1202 co-relation queries the response was YES. [2022-07-13 21:43:06,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16145 conditions, 10702 events. 3432/10702 cut-off events. For 1202/1202 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 114399 event pairs, 1824 based on Foata normal form. 121/9667 useless extension candidates. Maximal degree in co-relation 13806. Up to 2551 conditions per place. [2022-07-13 21:43:06,569 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 32 selfloop transitions, 1 changer transitions 0/161 dead transitions. [2022-07-13 21:43:06,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 161 transitions, 444 flow [2022-07-13 21:43:06,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:06,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:06,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-07-13 21:43:06,571 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.876984126984127 [2022-07-13 21:43:06,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-07-13 21:43:06,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-07-13 21:43:06,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:06,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-07-13 21:43:06,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:06,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:06,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:06,574 INFO L186 Difference]: Start difference. First operand has 154 places, 150 transitions, 338 flow. Second operand 3 states and 442 transitions. [2022-07-13 21:43:06,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 161 transitions, 444 flow [2022-07-13 21:43:06,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 161 transitions, 440 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-13 21:43:06,580 INFO L242 Difference]: Finished difference. Result has 153 places, 148 transitions, 333 flow [2022-07-13 21:43:06,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=153, PETRI_TRANSITIONS=148} [2022-07-13 21:43:06,581 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -5 predicate places. [2022-07-13 21:43:06,581 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 148 transitions, 333 flow [2022-07-13 21:43:06,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:06,582 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:06,582 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:43:06,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 21:43:06,582 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:43:06,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:06,583 INFO L85 PathProgramCache]: Analyzing trace with hash -985739132, now seen corresponding path program 1 times [2022-07-13 21:43:06,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:06,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259070354] [2022-07-13 21:43:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:06,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:43:06,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:06,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259070354] [2022-07-13 21:43:06,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259070354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:06,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:06,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:06,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62970831] [2022-07-13 21:43:06,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:06,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:06,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:06,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:06,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:06,604 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-13 21:43:06,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 148 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:06,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:06,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-13 21:43:06,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:08,280 INFO L129 PetriNetUnfolder]: 5228/15122 cut-off events. [2022-07-13 21:43:08,280 INFO L130 PetriNetUnfolder]: For 1574/1574 co-relation queries the response was YES. [2022-07-13 21:43:08,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22809 conditions, 15122 events. 5228/15122 cut-off events. For 1574/1574 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 166360 event pairs, 2952 based on Foata normal form. 0/12604 useless extension candidates. Maximal degree in co-relation 16906. Up to 4077 conditions per place. [2022-07-13 21:43:08,429 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 32 selfloop transitions, 1 changer transitions 0/161 dead transitions. [2022-07-13 21:43:08,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 161 transitions, 440 flow [2022-07-13 21:43:08,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:08,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:08,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-07-13 21:43:08,431 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.876984126984127 [2022-07-13 21:43:08,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-07-13 21:43:08,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-07-13 21:43:08,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:08,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-07-13 21:43:08,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:08,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:08,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:08,435 INFO L186 Difference]: Start difference. First operand has 153 places, 148 transitions, 333 flow. Second operand 3 states and 442 transitions. [2022-07-13 21:43:08,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 161 transitions, 440 flow [2022-07-13 21:43:08,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 161 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:43:08,438 INFO L242 Difference]: Finished difference. Result has 155 places, 148 transitions, 337 flow [2022-07-13 21:43:08,439 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=155, PETRI_TRANSITIONS=148} [2022-07-13 21:43:08,439 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -3 predicate places. [2022-07-13 21:43:08,439 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 148 transitions, 337 flow [2022-07-13 21:43:08,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:08,440 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:08,440 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:43:08,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 21:43:08,440 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:43:08,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:08,441 INFO L85 PathProgramCache]: Analyzing trace with hash -985738109, now seen corresponding path program 1 times [2022-07-13 21:43:08,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:08,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566804539] [2022-07-13 21:43:08,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:08,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:43:08,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:08,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566804539] [2022-07-13 21:43:08,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566804539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:08,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:08,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:08,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725623012] [2022-07-13 21:43:08,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:08,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:08,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:08,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:08,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:08,464 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-13 21:43:08,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 148 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:08,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:08,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-13 21:43:08,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:10,811 INFO L129 PetriNetUnfolder]: 8136/23042 cut-off events. [2022-07-13 21:43:10,811 INFO L130 PetriNetUnfolder]: For 2669/2669 co-relation queries the response was YES. [2022-07-13 21:43:10,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35598 conditions, 23042 events. 8136/23042 cut-off events. For 2669/2669 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 273480 event pairs, 4284 based on Foata normal form. 0/19746 useless extension candidates. Maximal degree in co-relation 32059. Up to 5889 conditions per place. [2022-07-13 21:43:11,037 INFO L132 encePairwiseOnDemand]: 164/168 looper letters, 35 selfloop transitions, 3 changer transitions 0/161 dead transitions. [2022-07-13 21:43:11,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 161 transitions, 454 flow [2022-07-13 21:43:11,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:11,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2022-07-13 21:43:11,040 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-07-13 21:43:11,040 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2022-07-13 21:43:11,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2022-07-13 21:43:11,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:11,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2022-07-13 21:43:11,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:11,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:11,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:11,043 INFO L186 Difference]: Start difference. First operand has 155 places, 148 transitions, 337 flow. Second operand 3 states and 432 transitions. [2022-07-13 21:43:11,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 161 transitions, 454 flow [2022-07-13 21:43:11,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 161 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:43:11,061 INFO L242 Difference]: Finished difference. Result has 158 places, 149 transitions, 354 flow [2022-07-13 21:43:11,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=158, PETRI_TRANSITIONS=149} [2022-07-13 21:43:11,062 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 0 predicate places. [2022-07-13 21:43:11,062 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 149 transitions, 354 flow [2022-07-13 21:43:11,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:11,063 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:11,063 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:43:11,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 21:43:11,063 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:43:11,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:11,064 INFO L85 PathProgramCache]: Analyzing trace with hash -986691421, now seen corresponding path program 1 times [2022-07-13 21:43:11,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:11,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656375183] [2022-07-13 21:43:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:11,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:43:11,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:11,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656375183] [2022-07-13 21:43:11,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656375183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:11,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:11,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:11,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731430769] [2022-07-13 21:43:11,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:11,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:11,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:11,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:11,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:11,084 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-13 21:43:11,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 149 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:11,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:11,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-13 21:43:11,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:12,692 INFO L129 PetriNetUnfolder]: 4536/13446 cut-off events. [2022-07-13 21:43:12,692 INFO L130 PetriNetUnfolder]: For 1777/1777 co-relation queries the response was YES. [2022-07-13 21:43:12,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21159 conditions, 13446 events. 4536/13446 cut-off events. For 1777/1777 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 146763 event pairs, 2508 based on Foata normal form. 160/11840 useless extension candidates. Maximal degree in co-relation 13071. Up to 3473 conditions per place. [2022-07-13 21:43:12,821 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 31 selfloop transitions, 1 changer transitions 0/159 dead transitions. [2022-07-13 21:43:12,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 159 transitions, 447 flow [2022-07-13 21:43:12,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2022-07-13 21:43:12,823 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-07-13 21:43:12,823 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2022-07-13 21:43:12,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2022-07-13 21:43:12,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:12,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2022-07-13 21:43:12,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:12,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:12,825 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:12,825 INFO L186 Difference]: Start difference. First operand has 158 places, 149 transitions, 354 flow. Second operand 3 states and 441 transitions. [2022-07-13 21:43:12,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 159 transitions, 447 flow [2022-07-13 21:43:12,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 159 transitions, 439 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-13 21:43:12,851 INFO L242 Difference]: Finished difference. Result has 158 places, 147 transitions, 341 flow [2022-07-13 21:43:12,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=158, PETRI_TRANSITIONS=147} [2022-07-13 21:43:12,851 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 0 predicate places. [2022-07-13 21:43:12,851 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 147 transitions, 341 flow [2022-07-13 21:43:12,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:12,852 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:12,852 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:43:12,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 21:43:12,852 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:43:12,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:12,852 INFO L85 PathProgramCache]: Analyzing trace with hash -986692444, now seen corresponding path program 1 times [2022-07-13 21:43:12,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:12,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104793225] [2022-07-13 21:43:12,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:12,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:43:12,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:12,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104793225] [2022-07-13 21:43:12,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104793225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:12,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:12,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:12,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237465368] [2022-07-13 21:43:12,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:12,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:12,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:12,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:12,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:12,872 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-13 21:43:12,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 147 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:12,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:12,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-13 21:43:12,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:14,681 INFO L129 PetriNetUnfolder]: 6240/18874 cut-off events. [2022-07-13 21:43:14,681 INFO L130 PetriNetUnfolder]: For 2045/2045 co-relation queries the response was YES. [2022-07-13 21:43:14,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28719 conditions, 18874 events. 6240/18874 cut-off events. For 2045/2045 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 221905 event pairs, 3840 based on Foata normal form. 0/16418 useless extension candidates. Maximal degree in co-relation 25019. Up to 5285 conditions per place. [2022-07-13 21:43:14,874 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 34 selfloop transitions, 1 changer transitions 0/157 dead transitions. [2022-07-13 21:43:14,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 157 transitions, 445 flow [2022-07-13 21:43:14,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:14,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:14,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2022-07-13 21:43:14,876 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2022-07-13 21:43:14,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2022-07-13 21:43:14,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2022-07-13 21:43:14,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:14,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2022-07-13 21:43:14,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:14,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:14,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:14,879 INFO L186 Difference]: Start difference. First operand has 158 places, 147 transitions, 341 flow. Second operand 3 states and 429 transitions. [2022-07-13 21:43:14,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 157 transitions, 445 flow [2022-07-13 21:43:14,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 157 transitions, 444 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:43:14,905 INFO L242 Difference]: Finished difference. Result has 157 places, 145 transitions, 337 flow [2022-07-13 21:43:14,905 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=157, PETRI_TRANSITIONS=145} [2022-07-13 21:43:14,905 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, -1 predicate places. [2022-07-13 21:43:14,905 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 145 transitions, 337 flow [2022-07-13 21:43:14,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:14,906 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:14,906 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:43:14,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 21:43:14,906 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:43:14,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:14,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1011929366, now seen corresponding path program 1 times [2022-07-13 21:43:14,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:14,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054575554] [2022-07-13 21:43:14,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:14,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 21:43:14,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:14,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054575554] [2022-07-13 21:43:14,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054575554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:14,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:14,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:14,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895086114] [2022-07-13 21:43:14,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:14,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:14,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:14,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:14,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:14,926 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-13 21:43:14,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 145 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:14,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:14,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-13 21:43:14,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:16,756 INFO L129 PetriNetUnfolder]: 6004/15750 cut-off events. [2022-07-13 21:43:16,757 INFO L130 PetriNetUnfolder]: For 1789/1789 co-relation queries the response was YES. [2022-07-13 21:43:16,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25063 conditions, 15750 events. 6004/15750 cut-off events. For 1789/1789 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 168658 event pairs, 3420 based on Foata normal form. 0/12596 useless extension candidates. Maximal degree in co-relation 18571. Up to 4689 conditions per place. [2022-07-13 21:43:16,952 INFO L132 encePairwiseOnDemand]: 165/168 looper letters, 30 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2022-07-13 21:43:16,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 157 transitions, 435 flow [2022-07-13 21:43:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:16,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:16,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2022-07-13 21:43:16,954 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-07-13 21:43:16,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2022-07-13 21:43:16,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2022-07-13 21:43:16,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:16,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2022-07-13 21:43:16,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:16,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:16,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:16,957 INFO L186 Difference]: Start difference. First operand has 157 places, 145 transitions, 337 flow. Second operand 3 states and 441 transitions. [2022-07-13 21:43:16,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 157 transitions, 435 flow [2022-07-13 21:43:16,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 157 transitions, 434 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:43:16,960 INFO L242 Difference]: Finished difference. Result has 160 places, 146 transitions, 350 flow [2022-07-13 21:43:16,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=160, PETRI_TRANSITIONS=146} [2022-07-13 21:43:16,961 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 2 predicate places. [2022-07-13 21:43:16,961 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 146 transitions, 350 flow [2022-07-13 21:43:16,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:16,961 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:16,961 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:43:16,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 21:43:16,962 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:43:16,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:16,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1011928343, now seen corresponding path program 1 times [2022-07-13 21:43:16,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:16,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018862620] [2022-07-13 21:43:16,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:16,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 21:43:17,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:17,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018862620] [2022-07-13 21:43:17,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018862620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:17,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:17,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:17,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749640378] [2022-07-13 21:43:17,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:17,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:17,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:17,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:17,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:17,004 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-13 21:43:17,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 146 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:17,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:17,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-13 21:43:17,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:19,577 INFO L129 PetriNetUnfolder]: 9388/23678 cut-off events. [2022-07-13 21:43:19,577 INFO L130 PetriNetUnfolder]: For 3069/3069 co-relation queries the response was YES. [2022-07-13 21:43:19,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39096 conditions, 23678 events. 9388/23678 cut-off events. For 3069/3069 co-relation queries the response was YES. Maximal size of possible extension queue 934. Compared 268327 event pairs, 5820 based on Foata normal form. 0/19800 useless extension candidates. Maximal degree in co-relation 30347. Up to 7921 conditions per place. [2022-07-13 21:43:19,856 INFO L132 encePairwiseOnDemand]: 164/168 looper letters, 34 selfloop transitions, 3 changer transitions 0/158 dead transitions. [2022-07-13 21:43:19,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 158 transitions, 458 flow [2022-07-13 21:43:19,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2022-07-13 21:43:19,858 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8551587301587301 [2022-07-13 21:43:19,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2022-07-13 21:43:19,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2022-07-13 21:43:19,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:19,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2022-07-13 21:43:19,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:19,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:19,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:19,861 INFO L186 Difference]: Start difference. First operand has 160 places, 146 transitions, 350 flow. Second operand 3 states and 431 transitions. [2022-07-13 21:43:19,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 158 transitions, 458 flow [2022-07-13 21:43:19,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 158 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:43:19,898 INFO L242 Difference]: Finished difference. Result has 163 places, 147 transitions, 366 flow [2022-07-13 21:43:19,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=163, PETRI_TRANSITIONS=147} [2022-07-13 21:43:19,899 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 5 predicate places. [2022-07-13 21:43:19,899 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 147 transitions, 366 flow [2022-07-13 21:43:19,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:19,899 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:19,900 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:43:19,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 21:43:19,900 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:43:19,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:19,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1012881655, now seen corresponding path program 1 times [2022-07-13 21:43:19,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:19,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714049153] [2022-07-13 21:43:19,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:19,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 21:43:19,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:19,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714049153] [2022-07-13 21:43:19,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714049153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:19,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:19,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:19,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871283703] [2022-07-13 21:43:19,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:19,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:19,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:19,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:19,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:19,924 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 168 [2022-07-13 21:43:19,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 147 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:19,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:19,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 168 [2022-07-13 21:43:19,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:21,628 INFO L129 PetriNetUnfolder]: 5796/15126 cut-off events. [2022-07-13 21:43:21,628 INFO L130 PetriNetUnfolder]: For 2413/2413 co-relation queries the response was YES. [2022-07-13 21:43:21,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25913 conditions, 15126 events. 5796/15126 cut-off events. For 2413/2413 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 161159 event pairs, 3420 based on Foata normal form. 0/12704 useless extension candidates. Maximal degree in co-relation 16859. Up to 4689 conditions per place. [2022-07-13 21:43:21,768 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 30 selfloop transitions, 1 changer transitions 0/155 dead transitions. [2022-07-13 21:43:21,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 155 transitions, 445 flow [2022-07-13 21:43:21,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:21,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2022-07-13 21:43:21,771 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2022-07-13 21:43:21,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2022-07-13 21:43:21,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2022-07-13 21:43:21,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:21,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2022-07-13 21:43:21,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:21,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:21,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:21,774 INFO L186 Difference]: Start difference. First operand has 163 places, 147 transitions, 366 flow. Second operand 3 states and 440 transitions. [2022-07-13 21:43:21,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 155 transitions, 445 flow [2022-07-13 21:43:21,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 155 transitions, 437 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-07-13 21:43:21,811 INFO L242 Difference]: Finished difference. Result has 162 places, 144 transitions, 345 flow [2022-07-13 21:43:21,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=162, PETRI_TRANSITIONS=144} [2022-07-13 21:43:21,812 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 4 predicate places. [2022-07-13 21:43:21,812 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 144 transitions, 345 flow [2022-07-13 21:43:21,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:21,812 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:21,813 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:43:21,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 21:43:21,813 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:43:21,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:21,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1012882678, now seen corresponding path program 1 times [2022-07-13 21:43:21,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:21,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870681675] [2022-07-13 21:43:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:21,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 21:43:21,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:21,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870681675] [2022-07-13 21:43:21,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870681675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:21,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:21,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:21,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490229809] [2022-07-13 21:43:21,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:21,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:21,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:21,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:21,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:21,843 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-07-13 21:43:21,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 144 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:21,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:21,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-07-13 21:43:21,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:23,972 INFO L129 PetriNetUnfolder]: 7884/20462 cut-off events. [2022-07-13 21:43:23,972 INFO L130 PetriNetUnfolder]: For 2365/2365 co-relation queries the response was YES. [2022-07-13 21:43:24,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33640 conditions, 20462 events. 7884/20462 cut-off events. For 2365/2365 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 230430 event pairs, 5220 based on Foata normal form. 0/17336 useless extension candidates. Maximal degree in co-relation 28763. Up to 7113 conditions per place. [2022-07-13 21:43:24,201 INFO L132 encePairwiseOnDemand]: 166/168 looper letters, 33 selfloop transitions, 1 changer transitions 0/153 dead transitions. [2022-07-13 21:43:24,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 153 transitions, 440 flow [2022-07-13 21:43:24,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:24,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2022-07-13 21:43:24,203 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8492063492063492 [2022-07-13 21:43:24,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2022-07-13 21:43:24,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2022-07-13 21:43:24,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:24,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2022-07-13 21:43:24,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:24,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:24,206 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:24,206 INFO L186 Difference]: Start difference. First operand has 162 places, 144 transitions, 345 flow. Second operand 3 states and 428 transitions. [2022-07-13 21:43:24,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 153 transitions, 440 flow [2022-07-13 21:43:24,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 153 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:43:24,233 INFO L242 Difference]: Finished difference. Result has 161 places, 142 transitions, 341 flow [2022-07-13 21:43:24,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=161, PETRI_TRANSITIONS=142} [2022-07-13 21:43:24,234 INFO L279 CegarLoopForPetriNet]: 158 programPoint places, 3 predicate places. [2022-07-13 21:43:24,234 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 142 transitions, 341 flow [2022-07-13 21:43:24,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:24,235 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:24,235 INFO L200 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:43:24,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 21:43:24,235 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:43:24,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:24,236 INFO L85 PathProgramCache]: Analyzing trace with hash -351366252, now seen corresponding path program 1 times [2022-07-13 21:43:24,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:24,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232968046] [2022-07-13 21:43:24,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:24,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:43:24,247 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:43:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:43:24,260 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:43:24,261 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:43:24,261 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-07-13 21:43:24,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-13 21:43:24,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-07-13 21:43:24,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-07-13 21:43:24,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-07-13 21:43:24,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-13 21:43:24,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-13 21:43:24,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 21:43:24,262 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:43:24,263 WARN L231 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:43:24,263 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-07-13 21:43:24,286 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:43:24,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 184 places, 196 transitions, 452 flow [2022-07-13 21:43:24,316 INFO L129 PetriNetUnfolder]: 31/272 cut-off events. [2022-07-13 21:43:24,316 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-07-13 21:43:24,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 272 events. 31/272 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 749 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 250. Up to 14 conditions per place. [2022-07-13 21:43:24,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 196 transitions, 452 flow [2022-07-13 21:43:24,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 196 transitions, 452 flow [2022-07-13 21:43:24,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:43:24,321 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@5e8e80bf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@51ea8c8e [2022-07-13 21:43:24,321 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-13 21:43:24,325 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2022-07-13 21:43:24,325 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-13 21:43:24,326 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:24,326 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:43:24,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-13 21:43:24,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:24,326 INFO L85 PathProgramCache]: Analyzing trace with hash 80089653, now seen corresponding path program 1 times [2022-07-13 21:43:24,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:24,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684737741] [2022-07-13 21:43:24,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:24,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:43:24,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:24,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684737741] [2022-07-13 21:43:24,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684737741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:24,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:24,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:24,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810538116] [2022-07-13 21:43:24,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:24,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:24,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:24,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:24,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:24,346 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 196 [2022-07-13 21:43:24,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 196 transitions, 452 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:24,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:24,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 196 [2022-07-13 21:43:24,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:43:31,654 INFO L129 PetriNetUnfolder]: 20846/59256 cut-off events. [2022-07-13 21:43:31,654 INFO L130 PetriNetUnfolder]: For 43024/43024 co-relation queries the response was YES. [2022-07-13 21:43:32,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97577 conditions, 59256 events. 20846/59256 cut-off events. For 43024/43024 co-relation queries the response was YES. Maximal size of possible extension queue 1793. Compared 778656 event pairs, 11787 based on Foata normal form. 13219/65212 useless extension candidates. Maximal degree in co-relation 30505. Up to 15428 conditions per place. [2022-07-13 21:43:32,712 INFO L132 encePairwiseOnDemand]: 183/196 looper letters, 43 selfloop transitions, 3 changer transitions 0/195 dead transitions. [2022-07-13 21:43:32,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 195 transitions, 587 flow [2022-07-13 21:43:32,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:43:32,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:43:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2022-07-13 21:43:32,724 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8945578231292517 [2022-07-13 21:43:32,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2022-07-13 21:43:32,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2022-07-13 21:43:32,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:43:32,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2022-07-13 21:43:32,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:32,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:32,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:32,727 INFO L186 Difference]: Start difference. First operand has 184 places, 196 transitions, 452 flow. Second operand 3 states and 526 transitions. [2022-07-13 21:43:32,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 195 transitions, 587 flow [2022-07-13 21:43:32,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 195 transitions, 537 flow, removed 25 selfloop flow, removed 0 redundant places. [2022-07-13 21:43:32,763 INFO L242 Difference]: Finished difference. Result has 176 places, 179 transitions, 408 flow [2022-07-13 21:43:32,763 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=176, PETRI_TRANSITIONS=179} [2022-07-13 21:43:32,763 INFO L279 CegarLoopForPetriNet]: 184 programPoint places, -8 predicate places. [2022-07-13 21:43:32,764 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 408 flow [2022-07-13 21:43:32,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:32,764 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:43:32,764 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] [2022-07-13 21:43:32,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 21:43:32,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-13 21:43:32,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:43:32,767 INFO L85 PathProgramCache]: Analyzing trace with hash 80090676, now seen corresponding path program 1 times [2022-07-13 21:43:32,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:43:32,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237630130] [2022-07-13 21:43:32,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:43:32,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:43:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:43:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:43:32,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:43:32,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237630130] [2022-07-13 21:43:32,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237630130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:43:32,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:43:32,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:43:32,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827744028] [2022-07-13 21:43:32,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:43:32,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:43:32,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:43:32,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:43:32,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:43:32,787 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 196 [2022-07-13 21:43:32,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 179 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:43:32,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:43:32,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 196 [2022-07-13 21:43:32,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand