./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/33_double_lock_p1_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/33_double_lock_p1_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 3937112f59473340c79cc2d7ab59a9fe9e4faa83d54303e5490f5452d86b21aa --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:37:27,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:37:27,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:37:27,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:37:27,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:37:27,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:37:27,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:37:27,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:37:27,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:37:27,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:37:27,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:37:27,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:37:27,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:37:27,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:37:27,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:37:27,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:37:27,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:37:27,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:37:27,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:37:27,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:37:27,676 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:37:27,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:37:27,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:37:27,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:37:27,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:37:27,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:37:27,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:37:27,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:37:27,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:37:27,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:37:27,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:37:27,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:37:27,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:37:27,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:37:27,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:37:27,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:37:27,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:37:27,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:37:27,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:37:27,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:37:27,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:37:27,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:37:27,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:37:27,718 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:37:27,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:37:27,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:37:27,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:37:27,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:37:27,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:37:27,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:37:27,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:37:27,722 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:37:27,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:37:27,723 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:37:27,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:37:27,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:37:27,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:37:27,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:37:27,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:37:27,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:37:27,724 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:37:27,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:37:27,725 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:37:27,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:37:27,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:37:27,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:37:27,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:37:27,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:37:27,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:37:27,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:37:27,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:37:27,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:37:27,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:37:27,727 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:37:27,727 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:37:27,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:37:27,728 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3937112f59473340c79cc2d7ab59a9fe9e4faa83d54303e5490f5452d86b21aa [2022-07-21 08:37:28,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:37:28,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:37:28,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:37:28,073 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:37:28,073 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:37:28,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/33_double_lock_p1_vs.i [2022-07-21 08:37:28,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8900bbf1f/9a1332b4b3b940abb6eb8777c67ea6c4/FLAGa228a1dff [2022-07-21 08:37:28,688 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:37:28,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/33_double_lock_p1_vs.i [2022-07-21 08:37:28,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8900bbf1f/9a1332b4b3b940abb6eb8777c67ea6c4/FLAGa228a1dff [2022-07-21 08:37:29,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8900bbf1f/9a1332b4b3b940abb6eb8777c67ea6c4 [2022-07-21 08:37:29,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:37:29,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:37:29,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:37:29,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:37:29,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:37:29,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:37:29" (1/1) ... [2022-07-21 08:37:29,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@462fed84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:29, skipping insertion in model container [2022-07-21 08:37:29,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:37:29" (1/1) ... [2022-07-21 08:37:29,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:37:29,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:37:29,494 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/33_double_lock_p1_vs.i[30807,30820] [2022-07-21 08:37:29,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:37:29,520 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:37:29,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/33_double_lock_p1_vs.i[30807,30820] [2022-07-21 08:37:29,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:37:29,630 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:37:29,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:29 WrapperNode [2022-07-21 08:37:29,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:37:29,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:37:29,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:37:29,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:37:29,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:29" (1/1) ... [2022-07-21 08:37:29,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:29" (1/1) ... [2022-07-21 08:37:29,703 INFO L137 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 157 [2022-07-21 08:37:29,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:37:29,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:37:29,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:37:29,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:37:29,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:29" (1/1) ... [2022-07-21 08:37:29,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:29" (1/1) ... [2022-07-21 08:37:29,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:29" (1/1) ... [2022-07-21 08:37:29,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:29" (1/1) ... [2022-07-21 08:37:29,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:29" (1/1) ... [2022-07-21 08:37:29,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:29" (1/1) ... [2022-07-21 08:37:29,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:29" (1/1) ... [2022-07-21 08:37:29,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:37:29,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:37:29,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:37:29,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:37:29,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:29" (1/1) ... [2022-07-21 08:37:29,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:37:29,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:37:29,793 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) [2022-07-21 08:37:29,823 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 [2022-07-21 08:37:29,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:37:29,841 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-07-21 08:37:29,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-07-21 08:37:29,841 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-21 08:37:29,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-21 08:37:29,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:37:29,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:37:29,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:37:29,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:37:29,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:37:29,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:37:29,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:37:29,844 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:37:29,966 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:37:29,968 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:37:30,219 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:37:30,343 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:37:30,343 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 08:37:30,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:37:30 BoogieIcfgContainer [2022-07-21 08:37:30,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:37:30,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:37:30,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:37:30,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:37:30,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:37:29" (1/3) ... [2022-07-21 08:37:30,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a0a9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:37:30, skipping insertion in model container [2022-07-21 08:37:30,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:37:29" (2/3) ... [2022-07-21 08:37:30,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a0a9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:37:30, skipping insertion in model container [2022-07-21 08:37:30,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:37:30" (3/3) ... [2022-07-21 08:37:30,352 INFO L111 eAbstractionObserver]: Analyzing ICFG 33_double_lock_p1_vs.i [2022-07-21 08:37:30,356 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:37:30,363 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:37:30,364 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:37:30,364 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:37:30,403 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:37:30,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 79 transitions, 168 flow [2022-07-21 08:37:30,464 INFO L129 PetriNetUnfolder]: 7/89 cut-off events. [2022-07-21 08:37:30,465 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:37:30,468 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 89 events. 7/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 156 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2022-07-21 08:37:30,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 79 transitions, 168 flow [2022-07-21 08:37:30,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 78 transitions, 164 flow [2022-07-21 08:37:30,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:37:30,488 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@65be08a2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@55718ff7 [2022-07-21 08:37:30,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 08:37:30,497 INFO L129 PetriNetUnfolder]: 2/41 cut-off events. [2022-07-21 08:37:30,497 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:37:30,497 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:30,498 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] [2022-07-21 08:37:30,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:37:30,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:30,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1285914916, now seen corresponding path program 1 times [2022-07-21 08:37:30,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:30,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811517308] [2022-07-21 08:37:30,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:30,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:30,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:30,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811517308] [2022-07-21 08:37:30,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811517308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:30,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:30,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:30,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790392333] [2022-07-21 08:37:30,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:30,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:30,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:30,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:30,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:30,810 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 79 [2022-07-21 08:37:30,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:30,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:30,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 79 [2022-07-21 08:37:30,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:30,951 INFO L129 PetriNetUnfolder]: 104/297 cut-off events. [2022-07-21 08:37:30,952 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-21 08:37:30,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 297 events. 104/297 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1204 event pairs, 21 based on Foata normal form. 142/417 useless extension candidates. Maximal degree in co-relation 493. Up to 107 conditions per place. [2022-07-21 08:37:30,957 INFO L132 encePairwiseOnDemand]: 66/79 looper letters, 23 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2022-07-21 08:37:30,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 216 flow [2022-07-21 08:37:30,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:30,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2022-07-21 08:37:30,969 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8523206751054853 [2022-07-21 08:37:30,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2022-07-21 08:37:30,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2022-07-21 08:37:30,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:30,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2022-07-21 08:37:30,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:30,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:30,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:30,982 INFO L186 Difference]: Start difference. First operand has 78 places, 78 transitions, 164 flow. Second operand 3 states and 202 transitions. [2022-07-21 08:37:30,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 216 flow [2022-07-21 08:37:30,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:30,992 INFO L242 Difference]: Finished difference. Result has 71 places, 68 transitions, 177 flow [2022-07-21 08:37:30,994 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2022-07-21 08:37:31,000 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -7 predicate places. [2022-07-21 08:37:31,001 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 177 flow [2022-07-21 08:37:31,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:31,001 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:31,002 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] [2022-07-21 08:37:31,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:37:31,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 08:37:31,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:31,004 INFO L85 PathProgramCache]: Analyzing trace with hash 389079278, now seen corresponding path program 1 times [2022-07-21 08:37:31,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:31,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178639483] [2022-07-21 08:37:31,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:31,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:37:31,049 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:37:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:37:31,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:37:31,108 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:37:31,109 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-21 08:37:31,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-21 08:37:31,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-21 08:37:31,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-21 08:37:31,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:37:31,113 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 08:37:31,115 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-21 08:37:31,116 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-21 08:37:31,171 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:37:31,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 118 transitions, 260 flow [2022-07-21 08:37:31,190 INFO L129 PetriNetUnfolder]: 9/123 cut-off events. [2022-07-21 08:37:31,190 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:37:31,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 123 events. 9/123 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 271 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 132. Up to 6 conditions per place. [2022-07-21 08:37:31,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 118 transitions, 260 flow [2022-07-21 08:37:31,193 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 99 transitions, 213 flow [2022-07-21 08:37:31,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:37:31,195 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@65be08a2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@55718ff7 [2022-07-21 08:37:31,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-21 08:37:31,200 INFO L129 PetriNetUnfolder]: 2/40 cut-off events. [2022-07-21 08:37:31,202 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:37:31,203 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:31,203 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] [2022-07-21 08:37:31,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:37:31,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:31,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1583575936, now seen corresponding path program 1 times [2022-07-21 08:37:31,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:31,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060953347] [2022-07-21 08:37:31,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:31,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:31,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:31,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060953347] [2022-07-21 08:37:31,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060953347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:31,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:31,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:31,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522943633] [2022-07-21 08:37:31,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:31,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:31,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:31,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:31,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:31,301 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 118 [2022-07-21 08:37:31,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:31,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:31,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 118 [2022-07-21 08:37:31,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:32,008 INFO L129 PetriNetUnfolder]: 2222/3878 cut-off events. [2022-07-21 08:37:32,009 INFO L130 PetriNetUnfolder]: For 323/323 co-relation queries the response was YES. [2022-07-21 08:37:32,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7519 conditions, 3878 events. 2222/3878 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 26800 event pairs, 549 based on Foata normal form. 1519/5219 useless extension candidates. Maximal degree in co-relation 7486. Up to 2135 conditions per place. [2022-07-21 08:37:32,053 INFO L132 encePairwiseOnDemand]: 101/118 looper letters, 41 selfloop transitions, 10 changer transitions 0/109 dead transitions. [2022-07-21 08:37:32,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 109 transitions, 340 flow [2022-07-21 08:37:32,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:32,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2022-07-21 08:37:32,059 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7768361581920904 [2022-07-21 08:37:32,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2022-07-21 08:37:32,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2022-07-21 08:37:32,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:32,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2022-07-21 08:37:32,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-07-21 08:37:32,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:32,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:32,068 INFO L186 Difference]: Start difference. First operand has 100 places, 99 transitions, 213 flow. Second operand 3 states and 275 transitions. [2022-07-21 08:37:32,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 109 transitions, 340 flow [2022-07-21 08:37:32,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 109 transitions, 337 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:32,073 INFO L242 Difference]: Finished difference. Result has 93 places, 95 transitions, 264 flow [2022-07-21 08:37:32,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=93, PETRI_TRANSITIONS=95} [2022-07-21 08:37:32,074 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, -7 predicate places. [2022-07-21 08:37:32,074 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 95 transitions, 264 flow [2022-07-21 08:37:32,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:32,075 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:32,075 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:32,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:37:32,076 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:37:32,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:32,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1543540875, now seen corresponding path program 1 times [2022-07-21 08:37:32,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:32,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614926442] [2022-07-21 08:37:32,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:32,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:32,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:32,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:32,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614926442] [2022-07-21 08:37:32,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614926442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:32,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:32,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:37:32,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190200075] [2022-07-21 08:37:32,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:32,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:37:32,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:32,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:37:32,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:37:32,216 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 118 [2022-07-21 08:37:32,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 95 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:32,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:32,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 118 [2022-07-21 08:37:32,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:32,888 INFO L129 PetriNetUnfolder]: 2471/4719 cut-off events. [2022-07-21 08:37:32,889 INFO L130 PetriNetUnfolder]: For 1671/1671 co-relation queries the response was YES. [2022-07-21 08:37:32,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10726 conditions, 4719 events. 2471/4719 cut-off events. For 1671/1671 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36328 event pairs, 468 based on Foata normal form. 96/4793 useless extension candidates. Maximal degree in co-relation 10690. Up to 1812 conditions per place. [2022-07-21 08:37:32,948 INFO L132 encePairwiseOnDemand]: 107/118 looper letters, 60 selfloop transitions, 14 changer transitions 0/132 dead transitions. [2022-07-21 08:37:32,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 132 transitions, 514 flow [2022-07-21 08:37:32,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:37:32,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:37:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2022-07-21 08:37:32,951 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7627118644067796 [2022-07-21 08:37:32,951 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2022-07-21 08:37:32,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2022-07-21 08:37:32,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:32,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2022-07-21 08:37:32,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:32,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:32,955 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:32,955 INFO L186 Difference]: Start difference. First operand has 93 places, 95 transitions, 264 flow. Second operand 4 states and 360 transitions. [2022-07-21 08:37:32,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 132 transitions, 514 flow [2022-07-21 08:37:32,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 132 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:37:32,967 INFO L242 Difference]: Finished difference. Result has 95 places, 99 transitions, 306 flow [2022-07-21 08:37:32,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=95, PETRI_TRANSITIONS=99} [2022-07-21 08:37:32,969 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, -5 predicate places. [2022-07-21 08:37:32,970 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 99 transitions, 306 flow [2022-07-21 08:37:32,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:32,970 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:32,970 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:32,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:37:32,971 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:37:32,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:32,972 INFO L85 PathProgramCache]: Analyzing trace with hash -730331812, now seen corresponding path program 1 times [2022-07-21 08:37:32,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:32,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240283825] [2022-07-21 08:37:32,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:32,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:33,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:33,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240283825] [2022-07-21 08:37:33,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240283825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:33,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:33,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:37:33,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868400847] [2022-07-21 08:37:33,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:33,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:37:33,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:33,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:37:33,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:37:33,075 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 118 [2022-07-21 08:37:33,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 99 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:33,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:33,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 118 [2022-07-21 08:37:33,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:33,787 INFO L129 PetriNetUnfolder]: 2375/5273 cut-off events. [2022-07-21 08:37:33,788 INFO L130 PetriNetUnfolder]: For 2238/2238 co-relation queries the response was YES. [2022-07-21 08:37:33,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11645 conditions, 5273 events. 2375/5273 cut-off events. For 2238/2238 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 45616 event pairs, 797 based on Foata normal form. 110/5361 useless extension candidates. Maximal degree in co-relation 11608. Up to 1748 conditions per place. [2022-07-21 08:37:33,838 INFO L132 encePairwiseOnDemand]: 106/118 looper letters, 61 selfloop transitions, 24 changer transitions 0/143 dead transitions. [2022-07-21 08:37:33,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 143 transitions, 620 flow [2022-07-21 08:37:33,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:37:33,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:37:33,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2022-07-21 08:37:33,840 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7627118644067796 [2022-07-21 08:37:33,841 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2022-07-21 08:37:33,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2022-07-21 08:37:33,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:33,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2022-07-21 08:37:33,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:33,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:33,844 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:33,844 INFO L186 Difference]: Start difference. First operand has 95 places, 99 transitions, 306 flow. Second operand 4 states and 360 transitions. [2022-07-21 08:37:33,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 143 transitions, 620 flow [2022-07-21 08:37:33,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 143 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:33,852 INFO L242 Difference]: Finished difference. Result has 100 places, 114 transitions, 491 flow [2022-07-21 08:37:33,852 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=491, PETRI_PLACES=100, PETRI_TRANSITIONS=114} [2022-07-21 08:37:33,854 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 0 predicate places. [2022-07-21 08:37:33,854 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 114 transitions, 491 flow [2022-07-21 08:37:33,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:33,855 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:33,855 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:33,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:37:33,856 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:37:33,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:33,856 INFO L85 PathProgramCache]: Analyzing trace with hash -605140667, now seen corresponding path program 1 times [2022-07-21 08:37:33,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:33,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062534107] [2022-07-21 08:37:33,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:33,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:33,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:33,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:33,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062534107] [2022-07-21 08:37:33,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062534107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:33,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:33,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:37:33,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808005739] [2022-07-21 08:37:33,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:33,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:37:33,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:33,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:37:33,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:37:33,928 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 118 [2022-07-21 08:37:33,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 114 transitions, 491 flow. Second operand has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:33,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:33,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 118 [2022-07-21 08:37:33,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:34,784 INFO L129 PetriNetUnfolder]: 2529/5740 cut-off events. [2022-07-21 08:37:34,785 INFO L130 PetriNetUnfolder]: For 4762/4762 co-relation queries the response was YES. [2022-07-21 08:37:34,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14434 conditions, 5740 events. 2529/5740 cut-off events. For 4762/4762 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 51951 event pairs, 464 based on Foata normal form. 48/5766 useless extension candidates. Maximal degree in co-relation 14393. Up to 1739 conditions per place. [2022-07-21 08:37:34,838 INFO L132 encePairwiseOnDemand]: 106/118 looper letters, 84 selfloop transitions, 29 changer transitions 0/171 dead transitions. [2022-07-21 08:37:34,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 171 transitions, 921 flow [2022-07-21 08:37:34,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:37:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:37:34,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2022-07-21 08:37:34,841 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7728813559322034 [2022-07-21 08:37:34,841 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 456 transitions. [2022-07-21 08:37:34,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 456 transitions. [2022-07-21 08:37:34,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:34,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 456 transitions. [2022-07-21 08:37:34,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:34,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:34,846 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:34,846 INFO L186 Difference]: Start difference. First operand has 100 places, 114 transitions, 491 flow. Second operand 5 states and 456 transitions. [2022-07-21 08:37:34,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 171 transitions, 921 flow [2022-07-21 08:37:34,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 171 transitions, 909 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-07-21 08:37:34,868 INFO L242 Difference]: Finished difference. Result has 106 places, 126 transitions, 677 flow [2022-07-21 08:37:34,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=677, PETRI_PLACES=106, PETRI_TRANSITIONS=126} [2022-07-21 08:37:34,871 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 6 predicate places. [2022-07-21 08:37:34,871 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 126 transitions, 677 flow [2022-07-21 08:37:34,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:34,871 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:34,871 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:34,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:37:34,872 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:37:34,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:34,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1562317620, now seen corresponding path program 1 times [2022-07-21 08:37:34,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:34,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390451938] [2022-07-21 08:37:34,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:34,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:34,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:34,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390451938] [2022-07-21 08:37:34,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390451938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:34,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:34,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:34,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979449289] [2022-07-21 08:37:34,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:34,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:34,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:34,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:34,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:34,947 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 118 [2022-07-21 08:37:34,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 126 transitions, 677 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:34,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:34,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 118 [2022-07-21 08:37:34,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:36,847 INFO L129 PetriNetUnfolder]: 7722/16634 cut-off events. [2022-07-21 08:37:36,847 INFO L130 PetriNetUnfolder]: For 25730/25972 co-relation queries the response was YES. [2022-07-21 08:37:36,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44430 conditions, 16634 events. 7722/16634 cut-off events. For 25730/25972 co-relation queries the response was YES. Maximal size of possible extension queue 1377. Compared 173596 event pairs, 2431 based on Foata normal form. 462/16897 useless extension candidates. Maximal degree in co-relation 44380. Up to 8223 conditions per place. [2022-07-21 08:37:37,032 INFO L132 encePairwiseOnDemand]: 108/118 looper letters, 112 selfloop transitions, 10 changer transitions 0/182 dead transitions. [2022-07-21 08:37:37,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 182 transitions, 1389 flow [2022-07-21 08:37:37,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:37,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2022-07-21 08:37:37,038 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.768361581920904 [2022-07-21 08:37:37,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2022-07-21 08:37:37,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2022-07-21 08:37:37,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:37,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2022-07-21 08:37:37,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:37,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:37,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:37,043 INFO L186 Difference]: Start difference. First operand has 106 places, 126 transitions, 677 flow. Second operand 3 states and 272 transitions. [2022-07-21 08:37:37,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 182 transitions, 1389 flow [2022-07-21 08:37:37,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 182 transitions, 1265 flow, removed 42 selfloop flow, removed 2 redundant places. [2022-07-21 08:37:37,120 INFO L242 Difference]: Finished difference. Result has 107 places, 133 transitions, 667 flow [2022-07-21 08:37:37,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=667, PETRI_PLACES=107, PETRI_TRANSITIONS=133} [2022-07-21 08:37:37,122 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 7 predicate places. [2022-07-21 08:37:37,122 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 133 transitions, 667 flow [2022-07-21 08:37:37,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:37,123 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:37,123 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:37,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:37:37,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:37:37,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:37,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1313554895, now seen corresponding path program 1 times [2022-07-21 08:37:37,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:37,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900658867] [2022-07-21 08:37:37,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:37,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:37,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:37,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:37,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900658867] [2022-07-21 08:37:37,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900658867] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:37,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:37,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:37:37,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559861091] [2022-07-21 08:37:37,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:37,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:37:37,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:37,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:37:37,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:37:37,269 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 118 [2022-07-21 08:37:37,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 133 transitions, 667 flow. Second operand has 6 states, 6 states have (on average 74.33333333333333) internal successors, (446), 6 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:37,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:37,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 118 [2022-07-21 08:37:37,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:39,344 INFO L129 PetriNetUnfolder]: 10613/22507 cut-off events. [2022-07-21 08:37:39,345 INFO L130 PetriNetUnfolder]: For 33522/33942 co-relation queries the response was YES. [2022-07-21 08:37:39,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73521 conditions, 22507 events. 10613/22507 cut-off events. For 33522/33942 co-relation queries the response was YES. Maximal size of possible extension queue 1735. Compared 237203 event pairs, 2266 based on Foata normal form. 529/22748 useless extension candidates. Maximal degree in co-relation 73470. Up to 11039 conditions per place. [2022-07-21 08:37:39,551 INFO L132 encePairwiseOnDemand]: 109/118 looper letters, 124 selfloop transitions, 13 changer transitions 0/196 dead transitions. [2022-07-21 08:37:39,551 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 196 transitions, 1411 flow [2022-07-21 08:37:39,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:37:39,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:37:39,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 414 transitions. [2022-07-21 08:37:39,553 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7016949152542373 [2022-07-21 08:37:39,553 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 414 transitions. [2022-07-21 08:37:39,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 414 transitions. [2022-07-21 08:37:39,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:39,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 414 transitions. [2022-07-21 08:37:39,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.8) internal successors, (414), 5 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) [2022-07-21 08:37:39,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:39,557 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:39,557 INFO L186 Difference]: Start difference. First operand has 107 places, 133 transitions, 667 flow. Second operand 5 states and 414 transitions. [2022-07-21 08:37:39,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 196 transitions, 1411 flow [2022-07-21 08:37:39,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 196 transitions, 1391 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:39,857 INFO L242 Difference]: Finished difference. Result has 111 places, 141 transitions, 742 flow [2022-07-21 08:37:39,857 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=742, PETRI_PLACES=111, PETRI_TRANSITIONS=141} [2022-07-21 08:37:39,858 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2022-07-21 08:37:39,858 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 141 transitions, 742 flow [2022-07-21 08:37:39,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.33333333333333) internal successors, (446), 6 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:39,859 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:39,859 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:39,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:37:39,860 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:37:39,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:39,860 INFO L85 PathProgramCache]: Analyzing trace with hash -674975574, now seen corresponding path program 2 times [2022-07-21 08:37:39,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:39,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330541915] [2022-07-21 08:37:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:39,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:39,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:39,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330541915] [2022-07-21 08:37:39,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330541915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:39,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:39,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:37:39,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978506906] [2022-07-21 08:37:39,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:39,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:37:39,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:39,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:37:39,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:37:39,973 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 118 [2022-07-21 08:37:39,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 141 transitions, 742 flow. Second operand has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:39,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:39,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 118 [2022-07-21 08:37:39,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:42,211 INFO L129 PetriNetUnfolder]: 10261/23485 cut-off events. [2022-07-21 08:37:42,211 INFO L130 PetriNetUnfolder]: For 43177/43793 co-relation queries the response was YES. [2022-07-21 08:37:42,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81208 conditions, 23485 events. 10261/23485 cut-off events. For 43177/43793 co-relation queries the response was YES. Maximal size of possible extension queue 1539. Compared 259383 event pairs, 1858 based on Foata normal form. 615/23855 useless extension candidates. Maximal degree in co-relation 81148. Up to 9111 conditions per place. [2022-07-21 08:37:42,387 INFO L132 encePairwiseOnDemand]: 106/118 looper letters, 124 selfloop transitions, 24 changer transitions 0/201 dead transitions. [2022-07-21 08:37:42,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 201 transitions, 1509 flow [2022-07-21 08:37:42,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:37:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:37:42,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 444 transitions. [2022-07-21 08:37:42,390 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6271186440677966 [2022-07-21 08:37:42,390 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 444 transitions. [2022-07-21 08:37:42,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 444 transitions. [2022-07-21 08:37:42,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:42,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 444 transitions. [2022-07-21 08:37:42,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:42,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:42,395 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:42,395 INFO L186 Difference]: Start difference. First operand has 111 places, 141 transitions, 742 flow. Second operand 6 states and 444 transitions. [2022-07-21 08:37:42,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 201 transitions, 1509 flow [2022-07-21 08:37:42,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 201 transitions, 1506 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:37:42,542 INFO L242 Difference]: Finished difference. Result has 115 places, 150 transitions, 877 flow [2022-07-21 08:37:42,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=877, PETRI_PLACES=115, PETRI_TRANSITIONS=150} [2022-07-21 08:37:42,543 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 15 predicate places. [2022-07-21 08:37:42,545 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 150 transitions, 877 flow [2022-07-21 08:37:42,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:42,546 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:42,546 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:42,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:37:42,546 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:37:42,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:42,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1155385899, now seen corresponding path program 2 times [2022-07-21 08:37:42,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:42,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126417846] [2022-07-21 08:37:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:42,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:42,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:42,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126417846] [2022-07-21 08:37:42,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126417846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:42,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:42,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:37:42,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272113412] [2022-07-21 08:37:42,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:42,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:37:42,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:42,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:37:42,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:37:42,760 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 118 [2022-07-21 08:37:42,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 150 transitions, 877 flow. Second operand has 10 states, 10 states have (on average 65.1) internal successors, (651), 10 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:42,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:42,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 118 [2022-07-21 08:37:42,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:44,068 INFO L129 PetriNetUnfolder]: 5383/13196 cut-off events. [2022-07-21 08:37:44,068 INFO L130 PetriNetUnfolder]: For 31691/32148 co-relation queries the response was YES. [2022-07-21 08:37:44,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50748 conditions, 13196 events. 5383/13196 cut-off events. For 31691/32148 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 137114 event pairs, 1027 based on Foata normal form. 347/13384 useless extension candidates. Maximal degree in co-relation 50684. Up to 5267 conditions per place. [2022-07-21 08:37:44,155 INFO L132 encePairwiseOnDemand]: 107/118 looper letters, 100 selfloop transitions, 26 changer transitions 0/178 dead transitions. [2022-07-21 08:37:44,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 178 transitions, 1330 flow [2022-07-21 08:37:44,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:37:44,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-21 08:37:44,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 558 transitions. [2022-07-21 08:37:44,157 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5911016949152542 [2022-07-21 08:37:44,157 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 558 transitions. [2022-07-21 08:37:44,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 558 transitions. [2022-07-21 08:37:44,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:44,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 558 transitions. [2022-07-21 08:37:44,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.75) internal successors, (558), 8 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:44,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 118.0) internal successors, (1062), 9 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:44,161 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 118.0) internal successors, (1062), 9 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:44,162 INFO L186 Difference]: Start difference. First operand has 115 places, 150 transitions, 877 flow. Second operand 8 states and 558 transitions. [2022-07-21 08:37:44,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 178 transitions, 1330 flow [2022-07-21 08:37:44,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 178 transitions, 1325 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-21 08:37:44,229 INFO L242 Difference]: Finished difference. Result has 119 places, 144 transitions, 860 flow [2022-07-21 08:37:44,229 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=860, PETRI_PLACES=119, PETRI_TRANSITIONS=144} [2022-07-21 08:37:44,230 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 19 predicate places. [2022-07-21 08:37:44,230 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 144 transitions, 860 flow [2022-07-21 08:37:44,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.1) internal successors, (651), 10 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:44,231 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:44,231 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] [2022-07-21 08:37:44,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:37:44,232 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:37:44,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:44,232 INFO L85 PathProgramCache]: Analyzing trace with hash -777007714, now seen corresponding path program 1 times [2022-07-21 08:37:44,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:44,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116550915] [2022-07-21 08:37:44,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:44,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:37:44,243 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:37:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:37:44,254 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:37:44,254 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:37:44,254 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-21 08:37:44,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-21 08:37:44,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-21 08:37:44,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-21 08:37:44,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-21 08:37:44,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:37:44,255 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2022-07-21 08:37:44,256 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-21 08:37:44,256 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-21 08:37:44,313 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:37:44,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 155 places, 157 transitions, 356 flow [2022-07-21 08:37:44,336 INFO L129 PetriNetUnfolder]: 11/157 cut-off events. [2022-07-21 08:37:44,336 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-21 08:37:44,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 157 events. 11/157 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 383 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2022-07-21 08:37:44,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 157 transitions, 356 flow [2022-07-21 08:37:44,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 120 transitions, 264 flow [2022-07-21 08:37:44,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:37:44,341 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@65be08a2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@55718ff7 [2022-07-21 08:37:44,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-21 08:37:44,343 INFO L129 PetriNetUnfolder]: 4/46 cut-off events. [2022-07-21 08:37:44,343 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:37:44,343 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:44,343 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:44,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:37:44,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:44,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1099456548, now seen corresponding path program 1 times [2022-07-21 08:37:44,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:44,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746691834] [2022-07-21 08:37:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:44,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:44,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:44,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746691834] [2022-07-21 08:37:44,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746691834] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:44,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:44,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:37:44,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116004476] [2022-07-21 08:37:44,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:44,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:37:44,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:44,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:37:44,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:37:44,377 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 157 [2022-07-21 08:37:44,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 120 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:44,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:44,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 157 [2022-07-21 08:37:44,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:48,386 INFO L129 PetriNetUnfolder]: 31382/46537 cut-off events. [2022-07-21 08:37:48,386 INFO L130 PetriNetUnfolder]: For 6751/6751 co-relation queries the response was YES. [2022-07-21 08:37:48,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92714 conditions, 46537 events. 31382/46537 cut-off events. For 6751/6751 co-relation queries the response was YES. Maximal size of possible extension queue 3390. Compared 367978 event pairs, 9243 based on Foata normal form. 14398/59343 useless extension candidates. Maximal degree in co-relation 92680. Up to 28901 conditions per place. [2022-07-21 08:37:48,761 INFO L132 encePairwiseOnDemand]: 136/157 looper letters, 55 selfloop transitions, 14 changer transitions 0/139 dead transitions. [2022-07-21 08:37:48,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 139 transitions, 452 flow [2022-07-21 08:37:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:37:48,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:37:48,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2022-07-21 08:37:48,764 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7303609341825902 [2022-07-21 08:37:48,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2022-07-21 08:37:48,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2022-07-21 08:37:48,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:48,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2022-07-21 08:37:48,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-07-21 08:37:48,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:48,768 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:48,768 INFO L186 Difference]: Start difference. First operand has 122 places, 120 transitions, 264 flow. Second operand 3 states and 344 transitions. [2022-07-21 08:37:48,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 139 transitions, 452 flow [2022-07-21 08:37:48,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 139 transitions, 443 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-07-21 08:37:48,772 INFO L242 Difference]: Finished difference. Result has 115 places, 120 transitions, 343 flow [2022-07-21 08:37:48,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=115, PETRI_TRANSITIONS=120} [2022-07-21 08:37:48,773 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -7 predicate places. [2022-07-21 08:37:48,773 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 120 transitions, 343 flow [2022-07-21 08:37:48,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:48,773 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:48,773 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:48,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:37:48,774 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:37:48,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:48,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2112374529, now seen corresponding path program 1 times [2022-07-21 08:37:48,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:48,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352969008] [2022-07-21 08:37:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:48,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:48,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:48,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352969008] [2022-07-21 08:37:48,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352969008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:48,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:48,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:37:48,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40208501] [2022-07-21 08:37:48,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:48,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:37:48,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:48,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:37:48,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:37:48,818 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 157 [2022-07-21 08:37:48,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 120 transitions, 343 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 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) [2022-07-21 08:37:48,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:48,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 157 [2022-07-21 08:37:48,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:37:55,333 INFO L129 PetriNetUnfolder]: 45925/79427 cut-off events. [2022-07-21 08:37:55,333 INFO L130 PetriNetUnfolder]: For 28673/28673 co-relation queries the response was YES. [2022-07-21 08:37:55,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178826 conditions, 79427 events. 45925/79427 cut-off events. For 28673/28673 co-relation queries the response was YES. Maximal size of possible extension queue 5492. Compared 819496 event pairs, 14512 based on Foata normal form. 2048/81443 useless extension candidates. Maximal degree in co-relation 178789. Up to 25484 conditions per place. [2022-07-21 08:37:56,121 INFO L132 encePairwiseOnDemand]: 141/157 looper letters, 76 selfloop transitions, 38 changer transitions 0/184 dead transitions. [2022-07-21 08:37:56,121 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 184 transitions, 773 flow [2022-07-21 08:37:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:37:56,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:37:56,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 457 transitions. [2022-07-21 08:37:56,123 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7277070063694268 [2022-07-21 08:37:56,123 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 457 transitions. [2022-07-21 08:37:56,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 457 transitions. [2022-07-21 08:37:56,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:37:56,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 457 transitions. [2022-07-21 08:37:56,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:56,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:56,127 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:37:56,127 INFO L186 Difference]: Start difference. First operand has 115 places, 120 transitions, 343 flow. Second operand 4 states and 457 transitions. [2022-07-21 08:37:56,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 184 transitions, 773 flow [2022-07-21 08:37:56,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 184 transitions, 743 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:37:56,330 INFO L242 Difference]: Finished difference. Result has 119 places, 145 transitions, 601 flow [2022-07-21 08:37:56,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=601, PETRI_PLACES=119, PETRI_TRANSITIONS=145} [2022-07-21 08:37:56,330 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -3 predicate places. [2022-07-21 08:37:56,331 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 145 transitions, 601 flow [2022-07-21 08:37:56,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 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) [2022-07-21 08:37:56,331 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:37:56,331 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:37:56,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:37:56,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-21 08:37:56,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:37:56,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1556245758, now seen corresponding path program 1 times [2022-07-21 08:37:56,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:37:56,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961270036] [2022-07-21 08:37:56,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:37:56,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:37:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:37:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:37:56,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:37:56,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961270036] [2022-07-21 08:37:56,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961270036] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:37:56,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:37:56,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:37:56,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612195095] [2022-07-21 08:37:56,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:37:56,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:37:56,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:37:56,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:37:56,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:37:56,380 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 157 [2022-07-21 08:37:56,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 145 transitions, 601 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 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) [2022-07-21 08:37:56,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:37:56,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 157 [2022-07-21 08:37:56,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand