./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.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 dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:24:12,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:24:12,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:24:12,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:24:12,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:24:12,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:24:12,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:24:12,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:24:12,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:24:12,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:24:12,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:24:12,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:24:12,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:24:12,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:24:12,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:24:12,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:24:12,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:24:12,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:24:12,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:24:12,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:24:12,710 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:24:12,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:24:12,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:24:12,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:24:12,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:24:12,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:24:12,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:24:12,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:24:12,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:24:12,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:24:12,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:24:12,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:24:12,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:24:12,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:24:12,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:24:12,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:24:12,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:24:12,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:24:12,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:24:12,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:24:12,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:24:12,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:24:12,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:24:12,752 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:24:12,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:24:12,753 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:24:12,753 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:24:12,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:24:12,754 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:24:12,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:24:12,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:24:12,755 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:24:12,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:24:12,755 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:24:12,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:24:12,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:24:12,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:24:12,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:24:12,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:24:12,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:24:12,756 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:24:12,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:24:12,757 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:24:12,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:24:12,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:24:12,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:24:12,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:24:12,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:24:12,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:24:12,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:24:12,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:24:12,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:24:12,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:24:12,758 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:24:12,758 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:24:12,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:24:12,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d [2022-07-22 21:24:12,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:24:12,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:24:12,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:24:12,956 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:24:12,957 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:24:12,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-07-22 21:24:12,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ce9b7e7/7bbd83a02b7f45a2af3cf35bee617243/FLAG4a5b52756 [2022-07-22 21:24:13,372 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:24:13,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-07-22 21:24:13,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ce9b7e7/7bbd83a02b7f45a2af3cf35bee617243/FLAG4a5b52756 [2022-07-22 21:24:13,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ce9b7e7/7bbd83a02b7f45a2af3cf35bee617243 [2022-07-22 21:24:13,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:24:13,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:24:13,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:24:13,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:24:13,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:24:13,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:24:13" (1/1) ... [2022-07-22 21:24:13,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c95627e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:13, skipping insertion in model container [2022-07-22 21:24:13,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:24:13" (1/1) ... [2022-07-22 21:24:13,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:24:13,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:24:13,609 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-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-22 21:24:13,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:24:13,807 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:24:13,817 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-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-22 21:24:13,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:24:13,898 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:24:13,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:13 WrapperNode [2022-07-22 21:24:13,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:24:13,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:24:13,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:24:13,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:24:13,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:13" (1/1) ... [2022-07-22 21:24:13,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:13" (1/1) ... [2022-07-22 21:24:13,955 INFO L137 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 192 [2022-07-22 21:24:13,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:24:13,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:24:13,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:24:13,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:24:13,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:13" (1/1) ... [2022-07-22 21:24:13,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:13" (1/1) ... [2022-07-22 21:24:13,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:13" (1/1) ... [2022-07-22 21:24:13,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:13" (1/1) ... [2022-07-22 21:24:13,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:13" (1/1) ... [2022-07-22 21:24:13,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:13" (1/1) ... [2022-07-22 21:24:14,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:13" (1/1) ... [2022-07-22 21:24:14,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:24:14,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:24:14,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:24:14,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:24:14,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:13" (1/1) ... [2022-07-22 21:24:14,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:24:14,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:24:14,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:24:14,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:24:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:24:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:24:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:24:14,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:24:14,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:24:14,100 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-22 21:24:14,103 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-22 21:24:14,103 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-22 21:24:14,103 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-22 21:24:14,103 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-22 21:24:14,103 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-22 21:24:14,103 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-22 21:24:14,104 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-22 21:24:14,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:24:14,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:24:14,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:24:14,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:24:14,106 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:24:14,239 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:24:14,242 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:24:14,722 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:24:14,971 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:24:14,971 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:24:14,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:24:14 BoogieIcfgContainer [2022-07-22 21:24:14,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:24:14,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:24:14,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:24:14,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:24:14,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:24:13" (1/3) ... [2022-07-22 21:24:14,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1586163a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:24:14, skipping insertion in model container [2022-07-22 21:24:14,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:24:13" (2/3) ... [2022-07-22 21:24:14,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1586163a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:24:14, skipping insertion in model container [2022-07-22 21:24:14,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:24:14" (3/3) ... [2022-07-22 21:24:14,979 INFO L111 eAbstractionObserver]: Analyzing ICFG mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-07-22 21:24:14,985 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:24:14,992 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:24:14,992 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 21:24:14,992 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:24:15,063 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:24:15,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 296 flow [2022-07-22 21:24:15,147 INFO L129 PetriNetUnfolder]: 2/134 cut-off events. [2022-07-22 21:24:15,148 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:24:15,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 134 events. 2/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-07-22 21:24:15,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 296 flow [2022-07-22 21:24:15,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 134 transitions, 280 flow [2022-07-22 21:24:15,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:24:15,179 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@7d18b180, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6aa16f38 [2022-07-22 21:24:15,179 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-22 21:24:15,194 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2022-07-22 21:24:15,194 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:24:15,194 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:15,195 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:15,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:15,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:15,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1024845781, now seen corresponding path program 1 times [2022-07-22 21:24:15,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:15,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121459161] [2022-07-22 21:24:15,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:15,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:15,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:15,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121459161] [2022-07-22 21:24:15,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121459161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:15,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:15,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:24:15,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729392191] [2022-07-22 21:24:15,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:15,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:24:15,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:15,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:24:15,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:24:15,486 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 138 [2022-07-22 21:24:15,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 134 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:15,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:15,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 138 [2022-07-22 21:24:15,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:15,634 INFO L129 PetriNetUnfolder]: 162/548 cut-off events. [2022-07-22 21:24:15,635 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-22 21:24:15,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 548 events. 162/548 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2865 event pairs, 34 based on Foata normal form. 53/572 useless extension candidates. Maximal degree in co-relation 797. Up to 191 conditions per place. [2022-07-22 21:24:15,641 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 18 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2022-07-22 21:24:15,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 138 transitions, 337 flow [2022-07-22 21:24:15,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:24:15,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:24:15,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2022-07-22 21:24:15,653 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2022-07-22 21:24:15,653 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2022-07-22 21:24:15,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2022-07-22 21:24:15,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:15,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2022-07-22 21:24:15,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:15,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:15,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:15,666 INFO L186 Difference]: Start difference. First operand has 145 places, 134 transitions, 280 flow. Second operand 3 states and 391 transitions. [2022-07-22 21:24:15,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 138 transitions, 337 flow [2022-07-22 21:24:15,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 330 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:24:15,672 INFO L242 Difference]: Finished difference. Result has 141 places, 130 transitions, 272 flow [2022-07-22 21:24:15,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=141, PETRI_TRANSITIONS=130} [2022-07-22 21:24:15,676 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, -4 predicate places. [2022-07-22 21:24:15,676 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 130 transitions, 272 flow [2022-07-22 21:24:15,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:15,677 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:15,677 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:15,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:24:15,678 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:15,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:15,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1366403214, now seen corresponding path program 1 times [2022-07-22 21:24:15,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:15,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829062395] [2022-07-22 21:24:15,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:15,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:15,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:15,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829062395] [2022-07-22 21:24:15,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829062395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:15,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:15,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:24:15,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661545367] [2022-07-22 21:24:15,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:15,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:24:15,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:15,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:24:15,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:24:15,807 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 138 [2022-07-22 21:24:15,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 130 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:15,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:15,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 138 [2022-07-22 21:24:15,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:16,385 INFO L129 PetriNetUnfolder]: 1262/3309 cut-off events. [2022-07-22 21:24:16,385 INFO L130 PetriNetUnfolder]: For 191/191 co-relation queries the response was YES. [2022-07-22 21:24:16,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5385 conditions, 3309 events. 1262/3309 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 26659 event pairs, 226 based on Foata normal form. 0/3237 useless extension candidates. Maximal degree in co-relation 5329. Up to 949 conditions per place. [2022-07-22 21:24:16,422 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 22 selfloop transitions, 2 changer transitions 56/177 dead transitions. [2022-07-22 21:24:16,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 177 transitions, 514 flow [2022-07-22 21:24:16,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:24:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:24:16,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1095 transitions. [2022-07-22 21:24:16,425 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2022-07-22 21:24:16,425 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1095 transitions. [2022-07-22 21:24:16,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1095 transitions. [2022-07-22 21:24:16,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:16,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1095 transitions. [2022-07-22 21:24:16,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.66666666666667) internal successors, (1095), 9 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:16,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:16,431 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:16,432 INFO L186 Difference]: Start difference. First operand has 141 places, 130 transitions, 272 flow. Second operand 9 states and 1095 transitions. [2022-07-22 21:24:16,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 177 transitions, 514 flow [2022-07-22 21:24:16,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 177 transitions, 496 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:24:16,435 INFO L242 Difference]: Finished difference. Result has 154 places, 116 transitions, 260 flow [2022-07-22 21:24:16,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=260, PETRI_PLACES=154, PETRI_TRANSITIONS=116} [2022-07-22 21:24:16,436 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 9 predicate places. [2022-07-22 21:24:16,436 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 116 transitions, 260 flow [2022-07-22 21:24:16,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:16,437 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:16,437 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:16,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:24:16,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:16,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:16,438 INFO L85 PathProgramCache]: Analyzing trace with hash 625339572, now seen corresponding path program 1 times [2022-07-22 21:24:16,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:16,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194491857] [2022-07-22 21:24:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:16,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:16,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:16,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194491857] [2022-07-22 21:24:16,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194491857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:16,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:16,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:24:16,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273858970] [2022-07-22 21:24:16,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:16,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:24:16,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:16,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:24:16,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:24:16,555 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-07-22 21:24:16,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 116 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:16,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:16,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-07-22 21:24:16,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:18,913 INFO L129 PetriNetUnfolder]: 10674/17625 cut-off events. [2022-07-22 21:24:18,913 INFO L130 PetriNetUnfolder]: For 3759/3759 co-relation queries the response was YES. [2022-07-22 21:24:19,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36530 conditions, 17625 events. 10674/17625 cut-off events. For 3759/3759 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 131716 event pairs, 1929 based on Foata normal form. 318/17476 useless extension candidates. Maximal degree in co-relation 36463. Up to 5068 conditions per place. [2022-07-22 21:24:19,080 INFO L132 encePairwiseOnDemand]: 123/138 looper letters, 50 selfloop transitions, 13 changer transitions 101/251 dead transitions. [2022-07-22 21:24:19,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 251 transitions, 914 flow [2022-07-22 21:24:19,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:24:19,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:24:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1519 transitions. [2022-07-22 21:24:19,084 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.846711259754738 [2022-07-22 21:24:19,084 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1519 transitions. [2022-07-22 21:24:19,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1519 transitions. [2022-07-22 21:24:19,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:19,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1519 transitions. [2022-07-22 21:24:19,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.84615384615384) internal successors, (1519), 13 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:19,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:19,092 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:19,092 INFO L186 Difference]: Start difference. First operand has 154 places, 116 transitions, 260 flow. Second operand 13 states and 1519 transitions. [2022-07-22 21:24:19,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 251 transitions, 914 flow [2022-07-22 21:24:19,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 251 transitions, 858 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-07-22 21:24:19,454 INFO L242 Difference]: Finished difference. Result has 150 places, 126 transitions, 379 flow [2022-07-22 21:24:19,454 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=379, PETRI_PLACES=150, PETRI_TRANSITIONS=126} [2022-07-22 21:24:19,455 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 5 predicate places. [2022-07-22 21:24:19,455 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 379 flow [2022-07-22 21:24:19,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:19,455 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:19,456 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:19,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:24:19,456 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:19,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:19,457 INFO L85 PathProgramCache]: Analyzing trace with hash -911545105, now seen corresponding path program 1 times [2022-07-22 21:24:19,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:19,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701519637] [2022-07-22 21:24:19,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:19,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:19,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:19,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701519637] [2022-07-22 21:24:19,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701519637] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:19,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:19,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:24:19,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007590341] [2022-07-22 21:24:19,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:19,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:24:19,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:19,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:24:19,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:24:19,564 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-07-22 21:24:19,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 126 transitions, 379 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:19,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:19,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-07-22 21:24:19,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:21,656 INFO L129 PetriNetUnfolder]: 9563/16340 cut-off events. [2022-07-22 21:24:21,657 INFO L130 PetriNetUnfolder]: For 26300/26316 co-relation queries the response was YES. [2022-07-22 21:24:21,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48272 conditions, 16340 events. 9563/16340 cut-off events. For 26300/26316 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 127583 event pairs, 740 based on Foata normal form. 287/16362 useless extension candidates. Maximal degree in co-relation 48195. Up to 4622 conditions per place. [2022-07-22 21:24:21,808 INFO L132 encePairwiseOnDemand]: 122/138 looper letters, 55 selfloop transitions, 22 changer transitions 109/273 dead transitions. [2022-07-22 21:24:21,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 273 transitions, 1514 flow [2022-07-22 21:24:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:24:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:24:21,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1516 transitions. [2022-07-22 21:24:21,811 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8450390189520625 [2022-07-22 21:24:21,812 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1516 transitions. [2022-07-22 21:24:21,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1516 transitions. [2022-07-22 21:24:21,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:21,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1516 transitions. [2022-07-22 21:24:21,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.61538461538461) internal successors, (1516), 13 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:21,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:21,818 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:21,818 INFO L186 Difference]: Start difference. First operand has 150 places, 126 transitions, 379 flow. Second operand 13 states and 1516 transitions. [2022-07-22 21:24:21,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 273 transitions, 1514 flow [2022-07-22 21:24:21,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 273 transitions, 1490 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-07-22 21:24:21,910 INFO L242 Difference]: Finished difference. Result has 162 places, 141 transitions, 641 flow [2022-07-22 21:24:21,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=641, PETRI_PLACES=162, PETRI_TRANSITIONS=141} [2022-07-22 21:24:21,911 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 17 predicate places. [2022-07-22 21:24:21,911 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 141 transitions, 641 flow [2022-07-22 21:24:21,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:21,912 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:21,912 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:21,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:24:21,912 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:21,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:21,913 INFO L85 PathProgramCache]: Analyzing trace with hash -898069274, now seen corresponding path program 1 times [2022-07-22 21:24:21,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:21,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432706563] [2022-07-22 21:24:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:21,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:21,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:21,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432706563] [2022-07-22 21:24:21,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432706563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:21,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:21,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:24:21,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785214791] [2022-07-22 21:24:21,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:21,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:24:21,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:21,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:24:21,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:24:21,995 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-07-22 21:24:21,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 141 transitions, 641 flow. Second operand has 7 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:21,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:21,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-07-22 21:24:21,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:24,848 INFO L129 PetriNetUnfolder]: 11015/19064 cut-off events. [2022-07-22 21:24:24,848 INFO L130 PetriNetUnfolder]: For 70009/70571 co-relation queries the response was YES. [2022-07-22 21:24:25,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66500 conditions, 19064 events. 11015/19064 cut-off events. For 70009/70571 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 155504 event pairs, 1772 based on Foata normal form. 616/19394 useless extension candidates. Maximal degree in co-relation 66406. Up to 4484 conditions per place. [2022-07-22 21:24:25,078 INFO L132 encePairwiseOnDemand]: 123/138 looper letters, 60 selfloop transitions, 31 changer transitions 97/275 dead transitions. [2022-07-22 21:24:25,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 275 transitions, 1865 flow [2022-07-22 21:24:25,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:24:25,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:24:25,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1507 transitions. [2022-07-22 21:24:25,082 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8400222965440357 [2022-07-22 21:24:25,082 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1507 transitions. [2022-07-22 21:24:25,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1507 transitions. [2022-07-22 21:24:25,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:25,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1507 transitions. [2022-07-22 21:24:25,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.92307692307692) internal successors, (1507), 13 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:25,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:25,087 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:25,088 INFO L186 Difference]: Start difference. First operand has 162 places, 141 transitions, 641 flow. Second operand 13 states and 1507 transitions. [2022-07-22 21:24:25,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 275 transitions, 1865 flow [2022-07-22 21:24:25,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 275 transitions, 1791 flow, removed 37 selfloop flow, removed 0 redundant places. [2022-07-22 21:24:25,427 INFO L242 Difference]: Finished difference. Result has 177 places, 150 transitions, 888 flow [2022-07-22 21:24:25,427 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=888, PETRI_PLACES=177, PETRI_TRANSITIONS=150} [2022-07-22 21:24:25,428 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 32 predicate places. [2022-07-22 21:24:25,428 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 150 transitions, 888 flow [2022-07-22 21:24:25,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:25,429 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:25,429 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:25,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:24:25,430 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:25,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:25,430 INFO L85 PathProgramCache]: Analyzing trace with hash -401950526, now seen corresponding path program 1 times [2022-07-22 21:24:25,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:25,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586189739] [2022-07-22 21:24:25,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:25,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:25,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:25,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586189739] [2022-07-22 21:24:25,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586189739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:25,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:25,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:24:25,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782173461] [2022-07-22 21:24:25,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:25,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:24:25,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:25,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:24:25,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:24:25,501 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-07-22 21:24:25,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 150 transitions, 888 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:25,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:25,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-07-22 21:24:25,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:33,461 INFO L129 PetriNetUnfolder]: 32523/56485 cut-off events. [2022-07-22 21:24:33,462 INFO L130 PetriNetUnfolder]: For 129967/161810 co-relation queries the response was YES. [2022-07-22 21:24:34,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143918 conditions, 56485 events. 32523/56485 cut-off events. For 129967/161810 co-relation queries the response was YES. Maximal size of possible extension queue 3260. Compared 544790 event pairs, 1911 based on Foata normal form. 4323/57893 useless extension candidates. Maximal degree in co-relation 143810. Up to 17972 conditions per place. [2022-07-22 21:24:34,218 INFO L132 encePairwiseOnDemand]: 127/138 looper letters, 117 selfloop transitions, 20 changer transitions 0/260 dead transitions. [2022-07-22 21:24:34,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 260 transitions, 1878 flow [2022-07-22 21:24:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:24:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:24:34,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1217 transitions. [2022-07-22 21:24:34,221 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8818840579710145 [2022-07-22 21:24:34,221 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1217 transitions. [2022-07-22 21:24:34,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1217 transitions. [2022-07-22 21:24:34,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:34,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1217 transitions. [2022-07-22 21:24:34,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.7) internal successors, (1217), 10 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:34,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:34,227 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:34,228 INFO L186 Difference]: Start difference. First operand has 177 places, 150 transitions, 888 flow. Second operand 10 states and 1217 transitions. [2022-07-22 21:24:34,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 260 transitions, 1878 flow [2022-07-22 21:24:34,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 260 transitions, 1802 flow, removed 38 selfloop flow, removed 10 redundant places. [2022-07-22 21:24:34,382 INFO L242 Difference]: Finished difference. Result has 173 places, 168 transitions, 997 flow [2022-07-22 21:24:34,382 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=997, PETRI_PLACES=173, PETRI_TRANSITIONS=168} [2022-07-22 21:24:34,383 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 28 predicate places. [2022-07-22 21:24:34,383 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 168 transitions, 997 flow [2022-07-22 21:24:34,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:34,384 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:34,384 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:34,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:24:34,384 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:34,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:34,385 INFO L85 PathProgramCache]: Analyzing trace with hash 474767976, now seen corresponding path program 1 times [2022-07-22 21:24:34,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:34,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938768186] [2022-07-22 21:24:34,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:34,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:34,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:34,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:34,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938768186] [2022-07-22 21:24:34,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938768186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:34,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:34,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:24:34,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098646199] [2022-07-22 21:24:34,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:34,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:24:34,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:34,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:24:34,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:24:34,490 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-07-22 21:24:34,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 168 transitions, 997 flow. Second operand has 7 states, 7 states have (on average 107.14285714285714) internal successors, (750), 7 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:34,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:34,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-07-22 21:24:34,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:39,821 INFO L129 PetriNetUnfolder]: 14469/36032 cut-off events. [2022-07-22 21:24:39,822 INFO L130 PetriNetUnfolder]: For 118700/124682 co-relation queries the response was YES. [2022-07-22 21:24:40,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117394 conditions, 36032 events. 14469/36032 cut-off events. For 118700/124682 co-relation queries the response was YES. Maximal size of possible extension queue 2354. Compared 447911 event pairs, 3332 based on Foata normal form. 927/34642 useless extension candidates. Maximal degree in co-relation 117283. Up to 6153 conditions per place. [2022-07-22 21:24:40,364 INFO L132 encePairwiseOnDemand]: 123/138 looper letters, 142 selfloop transitions, 60 changer transitions 3/310 dead transitions. [2022-07-22 21:24:40,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 310 transitions, 2718 flow [2022-07-22 21:24:40,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:24:40,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:24:40,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1499 transitions. [2022-07-22 21:24:40,367 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8355629877369007 [2022-07-22 21:24:40,367 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1499 transitions. [2022-07-22 21:24:40,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1499 transitions. [2022-07-22 21:24:40,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:40,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1499 transitions. [2022-07-22 21:24:40,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.3076923076923) internal successors, (1499), 13 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:40,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:40,373 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:40,373 INFO L186 Difference]: Start difference. First operand has 173 places, 168 transitions, 997 flow. Second operand 13 states and 1499 transitions. [2022-07-22 21:24:40,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 310 transitions, 2718 flow [2022-07-22 21:24:40,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 310 transitions, 2660 flow, removed 28 selfloop flow, removed 3 redundant places. [2022-07-22 21:24:40,869 INFO L242 Difference]: Finished difference. Result has 194 places, 207 transitions, 1813 flow [2022-07-22 21:24:40,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1813, PETRI_PLACES=194, PETRI_TRANSITIONS=207} [2022-07-22 21:24:40,870 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 49 predicate places. [2022-07-22 21:24:40,870 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 207 transitions, 1813 flow [2022-07-22 21:24:40,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.14285714285714) internal successors, (750), 7 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:40,871 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:40,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:40,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:24:40,871 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:40,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:40,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1914440194, now seen corresponding path program 1 times [2022-07-22 21:24:40,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:40,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589708877] [2022-07-22 21:24:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:40,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:40,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:40,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589708877] [2022-07-22 21:24:40,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589708877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:40,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:40,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:24:40,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722434245] [2022-07-22 21:24:40,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:40,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:24:40,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:40,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:24:40,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:24:40,948 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-07-22 21:24:40,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 207 transitions, 1813 flow. Second operand has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:40,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:40,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-07-22 21:24:40,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:24:54,838 INFO L129 PetriNetUnfolder]: 47842/85023 cut-off events. [2022-07-22 21:24:54,838 INFO L130 PetriNetUnfolder]: For 331986/377154 co-relation queries the response was YES. [2022-07-22 21:24:55,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 288743 conditions, 85023 events. 47842/85023 cut-off events. For 331986/377154 co-relation queries the response was YES. Maximal size of possible extension queue 5327. Compared 901345 event pairs, 2359 based on Foata normal form. 7646/89769 useless extension candidates. Maximal degree in co-relation 288621. Up to 17906 conditions per place. [2022-07-22 21:24:56,142 INFO L132 encePairwiseOnDemand]: 127/138 looper letters, 153 selfloop transitions, 38 changer transitions 20/358 dead transitions. [2022-07-22 21:24:56,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 358 transitions, 3677 flow [2022-07-22 21:24:56,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:24:56,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:24:56,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1587 transitions. [2022-07-22 21:24:56,146 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8846153846153846 [2022-07-22 21:24:56,146 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1587 transitions. [2022-07-22 21:24:56,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1587 transitions. [2022-07-22 21:24:56,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:24:56,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1587 transitions. [2022-07-22 21:24:56,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 122.07692307692308) internal successors, (1587), 13 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:56,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:56,152 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 138.0) internal successors, (1932), 14 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:56,153 INFO L186 Difference]: Start difference. First operand has 194 places, 207 transitions, 1813 flow. Second operand 13 states and 1587 transitions. [2022-07-22 21:24:56,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 358 transitions, 3677 flow [2022-07-22 21:24:59,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 358 transitions, 3621 flow, removed 28 selfloop flow, removed 0 redundant places. [2022-07-22 21:24:59,383 INFO L242 Difference]: Finished difference. Result has 212 places, 214 transitions, 1810 flow [2022-07-22 21:24:59,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1810, PETRI_PLACES=212, PETRI_TRANSITIONS=214} [2022-07-22 21:24:59,384 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 67 predicate places. [2022-07-22 21:24:59,384 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 214 transitions, 1810 flow [2022-07-22 21:24:59,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:59,385 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:24:59,385 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:24:59,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:24:59,385 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:24:59,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:24:59,386 INFO L85 PathProgramCache]: Analyzing trace with hash -2115903679, now seen corresponding path program 1 times [2022-07-22 21:24:59,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:24:59,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596147988] [2022-07-22 21:24:59,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:24:59,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:24:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:24:59,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:24:59,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:24:59,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596147988] [2022-07-22 21:24:59,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596147988] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:24:59,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:24:59,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:24:59,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221192764] [2022-07-22 21:24:59,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:24:59,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:24:59,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:24:59,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:24:59,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:24:59,609 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-07-22 21:24:59,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 214 transitions, 1810 flow. Second operand has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:24:59,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:24:59,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-07-22 21:24:59,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand