./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 eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-eb692b5 [2022-07-19 21:09:14,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:09:14,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:09:14,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:09:14,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:09:14,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:09:14,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:09:14,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:09:14,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:09:14,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:09:14,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:09:14,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:09:14,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:09:14,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:09:14,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:09:14,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:09:14,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:09:14,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:09:14,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:09:14,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:09:14,641 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:09:14,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:09:14,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:09:14,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:09:14,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:09:14,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:09:14,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:09:14,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:09:14,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:09:14,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:09:14,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:09:14,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:09:14,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:09:14,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:09:14,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:09:14,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:09:14,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:09:14,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:09:14,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:09:14,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:09:14,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:09:14,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:09:14,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:09:14,683 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:09:14,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:09:14,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:09:14,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:09:14,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:09:14,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:09:14,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:09:14,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:09:14,686 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:09:14,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:09:14,687 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:09:14,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:09:14,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:09:14,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:09:14,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:09:14,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:09:14,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:09:14,688 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:09:14,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:09:14,688 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:09:14,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:09:14,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:09:14,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:09:14,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:09:14,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:09:14,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:09:14,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:09:14,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:09:14,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:09:14,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:09:14,691 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:09:14,691 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:09:14,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:09:14,691 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d [2022-07-19 21:09:14,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:09:14,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:09:14,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:09:14,915 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:09:14,915 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:09:14,917 INFO L432 ainManager$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 [2022-07-19 21:09:14,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a85afed1c/d6f015424ca7407584191905fd841c2c/FLAG46db5cd1e [2022-07-19 21:09:15,381 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:09:15,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-07-19 21:09:15,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a85afed1c/d6f015424ca7407584191905fd841c2c/FLAG46db5cd1e [2022-07-19 21:09:15,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a85afed1c/d6f015424ca7407584191905fd841c2c [2022-07-19 21:09:15,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:09:15,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:09:15,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:09:15,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:09:15,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:09:15,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:09:15" (1/1) ... [2022-07-19 21:09:15,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28fe8ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:09:15, skipping insertion in model container [2022-07-19 21:09:15,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:09:15" (1/1) ... [2022-07-19 21:09:15,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:09:15,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:09:15,603 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] [2022-07-19 21:09:15,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:09:15,742 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:09:15,754 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] [2022-07-19 21:09:15,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:09:15,821 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:09:15,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:09:15 WrapperNode [2022-07-19 21:09:15,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:09:15,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:09:15,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:09:15,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:09:15,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:09:15" (1/1) ... [2022-07-19 21:09:15,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:09:15" (1/1) ... [2022-07-19 21:09:15,856 INFO L137 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 192 [2022-07-19 21:09:15,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:09:15,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:09:15,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:09:15,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:09:15,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:09:15" (1/1) ... [2022-07-19 21:09:15,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:09:15" (1/1) ... [2022-07-19 21:09:15,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:09:15" (1/1) ... [2022-07-19 21:09:15,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:09:15" (1/1) ... [2022-07-19 21:09:15,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:09:15" (1/1) ... [2022-07-19 21:09:15,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:09:15" (1/1) ... [2022-07-19 21:09:15,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:09:15" (1/1) ... [2022-07-19 21:09:15,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:09:15,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:09:15,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:09:15,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:09:15,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:09:15" (1/1) ... [2022-07-19 21:09:15,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:09:15,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:09:15,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:09:15,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:09:15,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:09:15,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:09:15,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:09:15,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:09:15,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:09:15,983 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-19 21:09:15,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-19 21:09:15,986 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-19 21:09:15,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-19 21:09:15,986 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-19 21:09:15,987 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-19 21:09:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-19 21:09:15,989 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-19 21:09:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:09:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:09:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:09:15,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:09:15,991 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:09:16,100 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:09:16,101 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:09:16,491 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:09:16,721 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:09:16,721 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:09:16,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:09:16 BoogieIcfgContainer [2022-07-19 21:09:16,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:09:16,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:09:16,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:09:16,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:09:16,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:09:15" (1/3) ... [2022-07-19 21:09:16,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784cc89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:09:16, skipping insertion in model container [2022-07-19 21:09:16,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:09:15" (2/3) ... [2022-07-19 21:09:16,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784cc89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:09:16, skipping insertion in model container [2022-07-19 21:09:16,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:09:16" (3/3) ... [2022-07-19 21:09:16,730 INFO L111 eAbstractionObserver]: Analyzing ICFG mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-07-19 21:09:16,736 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:09:16,742 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:09:16,743 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 21:09:16,743 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:09:16,797 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:09:16,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 296 flow [2022-07-19 21:09:16,891 INFO L129 PetriNetUnfolder]: 2/134 cut-off events. [2022-07-19 21:09:16,892 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:09:16,895 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. [2022-07-19 21:09:16,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 296 flow [2022-07-19 21:09:16,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 134 transitions, 280 flow [2022-07-19 21:09:16,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:09:16,919 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@45d34a0e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4b29844e [2022-07-19 21:09:16,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-19 21:09:16,933 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2022-07-19 21:09:16,934 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:09:16,934 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:16,935 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:09:16,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:09:16,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:16,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1024845781, now seen corresponding path program 1 times [2022-07-19 21:09:16,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:16,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195457784] [2022-07-19 21:09:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:16,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:09:17,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:17,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195457784] [2022-07-19 21:09:17,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195457784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:17,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:17,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:09:17,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544872579] [2022-07-19 21:09:17,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:17,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:09:17,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:17,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:09:17,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:09:17,220 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 138 [2022-07-19 21:09:17,224 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) [2022-07-19 21:09:17,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:17,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 138 [2022-07-19 21:09:17,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:17,433 INFO L129 PetriNetUnfolder]: 162/548 cut-off events. [2022-07-19 21:09:17,434 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-19 21:09:17,439 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. [2022-07-19 21:09:17,443 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 18 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2022-07-19 21:09:17,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 138 transitions, 337 flow [2022-07-19 21:09:17,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:09:17,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:09:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2022-07-19 21:09:17,459 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2022-07-19 21:09:17,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2022-07-19 21:09:17,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2022-07-19 21:09:17,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:17,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2022-07-19 21:09:17,468 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) [2022-07-19 21:09:17,474 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) [2022-07-19 21:09:17,475 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) [2022-07-19 21:09:17,476 INFO L186 Difference]: Start difference. First operand has 145 places, 134 transitions, 280 flow. Second operand 3 states and 391 transitions. [2022-07-19 21:09:17,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 138 transitions, 337 flow [2022-07-19 21:09:17,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 330 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:09:17,485 INFO L242 Difference]: Finished difference. Result has 141 places, 130 transitions, 272 flow [2022-07-19 21:09:17,487 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} [2022-07-19 21:09:17,491 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, -4 predicate places. [2022-07-19 21:09:17,491 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 130 transitions, 272 flow [2022-07-19 21:09:17,492 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) [2022-07-19 21:09:17,492 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:17,492 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] [2022-07-19 21:09:17,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:09:17,492 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)] === [2022-07-19 21:09:17,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:17,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1366403214, now seen corresponding path program 1 times [2022-07-19 21:09:17,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:17,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987162369] [2022-07-19 21:09:17,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:17,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:17,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:09:17,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:17,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987162369] [2022-07-19 21:09:17,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987162369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:17,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:17,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:09:17,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455846068] [2022-07-19 21:09:17,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:17,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:09:17,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:17,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:09:17,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:09:17,652 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 138 [2022-07-19 21:09:17,655 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) [2022-07-19 21:09:17,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:17,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 138 [2022-07-19 21:09:17,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:18,329 INFO L129 PetriNetUnfolder]: 1262/3309 cut-off events. [2022-07-19 21:09:18,329 INFO L130 PetriNetUnfolder]: For 191/191 co-relation queries the response was YES. [2022-07-19 21:09:18,336 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. [2022-07-19 21:09:18,344 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 22 selfloop transitions, 2 changer transitions 56/177 dead transitions. [2022-07-19 21:09:18,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 177 transitions, 514 flow [2022-07-19 21:09:18,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:09:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:09:18,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1095 transitions. [2022-07-19 21:09:18,348 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8816425120772947 [2022-07-19 21:09:18,348 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1095 transitions. [2022-07-19 21:09:18,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1095 transitions. [2022-07-19 21:09:18,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:18,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1095 transitions. [2022-07-19 21:09:18,351 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) [2022-07-19 21:09:18,353 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) [2022-07-19 21:09:18,353 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) [2022-07-19 21:09:18,354 INFO L186 Difference]: Start difference. First operand has 141 places, 130 transitions, 272 flow. Second operand 9 states and 1095 transitions. [2022-07-19 21:09:18,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 177 transitions, 514 flow [2022-07-19 21:09:18,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 177 transitions, 496 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:09:18,358 INFO L242 Difference]: Finished difference. Result has 154 places, 116 transitions, 260 flow [2022-07-19 21:09:18,359 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} [2022-07-19 21:09:18,359 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 9 predicate places. [2022-07-19 21:09:18,360 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 116 transitions, 260 flow [2022-07-19 21:09:18,360 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) [2022-07-19 21:09:18,360 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:18,360 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] [2022-07-19 21:09:18,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:09:18,361 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)] === [2022-07-19 21:09:18,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:18,361 INFO L85 PathProgramCache]: Analyzing trace with hash 625339572, now seen corresponding path program 1 times [2022-07-19 21:09:18,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:18,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986238639] [2022-07-19 21:09:18,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:18,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:09:18,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:18,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986238639] [2022-07-19 21:09:18,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986238639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:18,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:18,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:09:18,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693993576] [2022-07-19 21:09:18,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:18,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:09:18,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:18,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:09:18,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:09:18,512 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-07-19 21:09:18,513 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) [2022-07-19 21:09:18,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:18,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-07-19 21:09:18,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:20,837 INFO L129 PetriNetUnfolder]: 10674/17625 cut-off events. [2022-07-19 21:09:20,838 INFO L130 PetriNetUnfolder]: For 3759/3759 co-relation queries the response was YES. [2022-07-19 21:09:20,898 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. [2022-07-19 21:09:20,962 INFO L132 encePairwiseOnDemand]: 123/138 looper letters, 50 selfloop transitions, 13 changer transitions 101/251 dead transitions. [2022-07-19 21:09:20,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 251 transitions, 914 flow [2022-07-19 21:09:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:09:20,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:09:20,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1519 transitions. [2022-07-19 21:09:20,966 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.846711259754738 [2022-07-19 21:09:20,966 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1519 transitions. [2022-07-19 21:09:20,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1519 transitions. [2022-07-19 21:09:20,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:20,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1519 transitions. [2022-07-19 21:09:20,970 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) [2022-07-19 21:09:20,973 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) [2022-07-19 21:09:20,974 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) [2022-07-19 21:09:20,974 INFO L186 Difference]: Start difference. First operand has 154 places, 116 transitions, 260 flow. Second operand 13 states and 1519 transitions. [2022-07-19 21:09:20,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 251 transitions, 914 flow [2022-07-19 21:09:21,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 251 transitions, 858 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-07-19 21:09:21,337 INFO L242 Difference]: Finished difference. Result has 150 places, 126 transitions, 379 flow [2022-07-19 21:09:21,338 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} [2022-07-19 21:09:21,338 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 5 predicate places. [2022-07-19 21:09:21,339 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 379 flow [2022-07-19 21:09:21,339 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) [2022-07-19 21:09:21,339 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:21,339 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] [2022-07-19 21:09:21,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:09:21,340 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)] === [2022-07-19 21:09:21,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:21,340 INFO L85 PathProgramCache]: Analyzing trace with hash -911545105, now seen corresponding path program 1 times [2022-07-19 21:09:21,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:21,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104400118] [2022-07-19 21:09:21,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:21,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:21,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:09:21,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:21,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104400118] [2022-07-19 21:09:21,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104400118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:21,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:21,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:09:21,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898047013] [2022-07-19 21:09:21,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:21,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:09:21,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:21,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:09:21,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:09:21,439 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-07-19 21:09:21,440 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) [2022-07-19 21:09:21,440 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:21,440 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-07-19 21:09:21,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:23,465 INFO L129 PetriNetUnfolder]: 9563/16340 cut-off events. [2022-07-19 21:09:23,466 INFO L130 PetriNetUnfolder]: For 26300/26316 co-relation queries the response was YES. [2022-07-19 21:09:23,529 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. [2022-07-19 21:09:23,583 INFO L132 encePairwiseOnDemand]: 122/138 looper letters, 55 selfloop transitions, 22 changer transitions 109/273 dead transitions. [2022-07-19 21:09:23,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 273 transitions, 1514 flow [2022-07-19 21:09:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:09:23,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:09:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1516 transitions. [2022-07-19 21:09:23,586 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8450390189520625 [2022-07-19 21:09:23,586 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1516 transitions. [2022-07-19 21:09:23,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1516 transitions. [2022-07-19 21:09:23,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:23,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1516 transitions. [2022-07-19 21:09:23,589 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) [2022-07-19 21:09:23,591 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) [2022-07-19 21:09:23,592 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) [2022-07-19 21:09:23,592 INFO L186 Difference]: Start difference. First operand has 150 places, 126 transitions, 379 flow. Second operand 13 states and 1516 transitions. [2022-07-19 21:09:23,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 273 transitions, 1514 flow [2022-07-19 21:09:23,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 273 transitions, 1490 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-07-19 21:09:23,682 INFO L242 Difference]: Finished difference. Result has 162 places, 141 transitions, 641 flow [2022-07-19 21:09:23,682 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} [2022-07-19 21:09:23,683 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 17 predicate places. [2022-07-19 21:09:23,683 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 141 transitions, 641 flow [2022-07-19 21:09:23,683 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) [2022-07-19 21:09:23,683 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:23,683 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] [2022-07-19 21:09:23,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:09:23,684 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)] === [2022-07-19 21:09:23,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:23,684 INFO L85 PathProgramCache]: Analyzing trace with hash -898069274, now seen corresponding path program 1 times [2022-07-19 21:09:23,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:23,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128293358] [2022-07-19 21:09:23,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:23,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:23,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:09:23,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:23,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128293358] [2022-07-19 21:09:23,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128293358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:23,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:23,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:09:23,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642075465] [2022-07-19 21:09:23,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:23,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:09:23,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:23,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:09:23,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:09:23,764 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-07-19 21:09:23,765 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) [2022-07-19 21:09:23,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:23,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-07-19 21:09:23,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:26,745 INFO L129 PetriNetUnfolder]: 11015/19064 cut-off events. [2022-07-19 21:09:26,746 INFO L130 PetriNetUnfolder]: For 70009/70571 co-relation queries the response was YES. [2022-07-19 21:09:26,861 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. [2022-07-19 21:09:26,925 INFO L132 encePairwiseOnDemand]: 123/138 looper letters, 60 selfloop transitions, 31 changer transitions 97/275 dead transitions. [2022-07-19 21:09:26,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 275 transitions, 1865 flow [2022-07-19 21:09:26,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:09:26,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:09:26,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1507 transitions. [2022-07-19 21:09:26,928 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8400222965440357 [2022-07-19 21:09:26,929 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1507 transitions. [2022-07-19 21:09:26,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1507 transitions. [2022-07-19 21:09:26,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:26,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1507 transitions. [2022-07-19 21:09:26,931 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) [2022-07-19 21:09:26,933 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) [2022-07-19 21:09:26,934 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) [2022-07-19 21:09:26,934 INFO L186 Difference]: Start difference. First operand has 162 places, 141 transitions, 641 flow. Second operand 13 states and 1507 transitions. [2022-07-19 21:09:26,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 275 transitions, 1865 flow [2022-07-19 21:09:27,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 275 transitions, 1791 flow, removed 37 selfloop flow, removed 0 redundant places. [2022-07-19 21:09:27,216 INFO L242 Difference]: Finished difference. Result has 177 places, 150 transitions, 888 flow [2022-07-19 21:09:27,217 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} [2022-07-19 21:09:27,217 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 32 predicate places. [2022-07-19 21:09:27,218 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 150 transitions, 888 flow [2022-07-19 21:09:27,218 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) [2022-07-19 21:09:27,218 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:27,218 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] [2022-07-19 21:09:27,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:09:27,218 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)] === [2022-07-19 21:09:27,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:27,219 INFO L85 PathProgramCache]: Analyzing trace with hash -401950526, now seen corresponding path program 1 times [2022-07-19 21:09:27,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:27,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885654227] [2022-07-19 21:09:27,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:27,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:09:27,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:27,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885654227] [2022-07-19 21:09:27,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885654227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:27,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:27,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:09:27,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232736081] [2022-07-19 21:09:27,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:27,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:09:27,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:27,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:09:27,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:09:27,303 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-07-19 21:09:27,304 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) [2022-07-19 21:09:27,304 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:27,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-07-19 21:09:27,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:35,454 INFO L129 PetriNetUnfolder]: 32523/56485 cut-off events. [2022-07-19 21:09:35,454 INFO L130 PetriNetUnfolder]: For 129967/161810 co-relation queries the response was YES. [2022-07-19 21:09:36,031 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. [2022-07-19 21:09:36,242 INFO L132 encePairwiseOnDemand]: 127/138 looper letters, 117 selfloop transitions, 20 changer transitions 0/260 dead transitions. [2022-07-19 21:09:36,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 260 transitions, 1878 flow [2022-07-19 21:09:36,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:09:36,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:09:36,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1217 transitions. [2022-07-19 21:09:36,245 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8818840579710145 [2022-07-19 21:09:36,245 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1217 transitions. [2022-07-19 21:09:36,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1217 transitions. [2022-07-19 21:09:36,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:36,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1217 transitions. [2022-07-19 21:09:36,248 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) [2022-07-19 21:09:36,250 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) [2022-07-19 21:09:36,251 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) [2022-07-19 21:09:36,251 INFO L186 Difference]: Start difference. First operand has 177 places, 150 transitions, 888 flow. Second operand 10 states and 1217 transitions. [2022-07-19 21:09:36,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 260 transitions, 1878 flow [2022-07-19 21:09:36,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 260 transitions, 1802 flow, removed 38 selfloop flow, removed 10 redundant places. [2022-07-19 21:09:36,402 INFO L242 Difference]: Finished difference. Result has 173 places, 168 transitions, 997 flow [2022-07-19 21:09:36,402 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} [2022-07-19 21:09:36,404 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 28 predicate places. [2022-07-19 21:09:36,405 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 168 transitions, 997 flow [2022-07-19 21:09:36,405 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) [2022-07-19 21:09:36,405 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:36,405 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:09:36,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:09:36,406 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)] === [2022-07-19 21:09:36,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:36,406 INFO L85 PathProgramCache]: Analyzing trace with hash 474767976, now seen corresponding path program 1 times [2022-07-19 21:09:36,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:36,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175702955] [2022-07-19 21:09:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:36,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:09:36,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:36,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175702955] [2022-07-19 21:09:36,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175702955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:36,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:36,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:09:36,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547340516] [2022-07-19 21:09:36,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:36,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:09:36,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:36,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:09:36,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:09:36,668 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 138 [2022-07-19 21:09:36,669 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) [2022-07-19 21:09:36,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:36,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 138 [2022-07-19 21:09:36,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:41,856 INFO L129 PetriNetUnfolder]: 14469/36032 cut-off events. [2022-07-19 21:09:41,856 INFO L130 PetriNetUnfolder]: For 118700/124682 co-relation queries the response was YES. [2022-07-19 21:09:42,266 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. [2022-07-19 21:09:42,431 INFO L132 encePairwiseOnDemand]: 123/138 looper letters, 142 selfloop transitions, 60 changer transitions 3/310 dead transitions. [2022-07-19 21:09:42,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 310 transitions, 2718 flow [2022-07-19 21:09:42,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:09:42,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:09:42,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1499 transitions. [2022-07-19 21:09:42,435 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8355629877369007 [2022-07-19 21:09:42,435 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1499 transitions. [2022-07-19 21:09:42,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1499 transitions. [2022-07-19 21:09:42,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:42,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1499 transitions. [2022-07-19 21:09:42,438 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) [2022-07-19 21:09:42,440 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) [2022-07-19 21:09:42,441 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) [2022-07-19 21:09:42,441 INFO L186 Difference]: Start difference. First operand has 173 places, 168 transitions, 997 flow. Second operand 13 states and 1499 transitions. [2022-07-19 21:09:42,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 310 transitions, 2718 flow [2022-07-19 21:09:42,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 310 transitions, 2660 flow, removed 28 selfloop flow, removed 3 redundant places. [2022-07-19 21:09:42,837 INFO L242 Difference]: Finished difference. Result has 194 places, 207 transitions, 1813 flow [2022-07-19 21:09:42,837 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} [2022-07-19 21:09:42,838 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 49 predicate places. [2022-07-19 21:09:42,838 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 207 transitions, 1813 flow [2022-07-19 21:09:42,838 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) [2022-07-19 21:09:42,839 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:42,839 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] [2022-07-19 21:09:42,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:09:42,839 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)] === [2022-07-19 21:09:42,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:42,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1914440194, now seen corresponding path program 1 times [2022-07-19 21:09:42,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:42,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867213177] [2022-07-19 21:09:42,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:42,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:09:42,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:42,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867213177] [2022-07-19 21:09:42,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867213177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:42,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:42,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:09:42,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304523422] [2022-07-19 21:09:42,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:42,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:09:42,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:42,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:09:42,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:09:42,921 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-07-19 21:09:42,921 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) [2022-07-19 21:09:42,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:42,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-07-19 21:09:42,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:57,146 INFO L129 PetriNetUnfolder]: 47842/85023 cut-off events. [2022-07-19 21:09:57,147 INFO L130 PetriNetUnfolder]: For 331986/377154 co-relation queries the response was YES. [2022-07-19 21:09:58,295 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. [2022-07-19 21:09:58,447 INFO L132 encePairwiseOnDemand]: 127/138 looper letters, 153 selfloop transitions, 38 changer transitions 20/358 dead transitions. [2022-07-19 21:09:58,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 358 transitions, 3677 flow [2022-07-19 21:09:58,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:09:58,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:09:58,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1587 transitions. [2022-07-19 21:09:58,452 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8846153846153846 [2022-07-19 21:09:58,452 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1587 transitions. [2022-07-19 21:09:58,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1587 transitions. [2022-07-19 21:09:58,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:58,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1587 transitions. [2022-07-19 21:09:58,456 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) [2022-07-19 21:09:58,462 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) [2022-07-19 21:09:58,463 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) [2022-07-19 21:09:58,463 INFO L186 Difference]: Start difference. First operand has 194 places, 207 transitions, 1813 flow. Second operand 13 states and 1587 transitions. [2022-07-19 21:09:58,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 358 transitions, 3677 flow [2022-07-19 21:10:02,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 358 transitions, 3621 flow, removed 28 selfloop flow, removed 0 redundant places. [2022-07-19 21:10:02,515 INFO L242 Difference]: Finished difference. Result has 212 places, 214 transitions, 1810 flow [2022-07-19 21:10:02,516 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} [2022-07-19 21:10:02,518 INFO L279 CegarLoopForPetriNet]: 145 programPoint places, 67 predicate places. [2022-07-19 21:10:02,519 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 214 transitions, 1810 flow [2022-07-19 21:10:02,519 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) [2022-07-19 21:10:02,519 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:10:02,519 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] [2022-07-19 21:10:02,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:10:02,519 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)] === [2022-07-19 21:10:02,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:10:02,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2115903679, now seen corresponding path program 1 times [2022-07-19 21:10:02,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:10:02,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966310244] [2022-07-19 21:10:02,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:10:02,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:10:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:10:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:10:02,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:10:02,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966310244] [2022-07-19 21:10:02,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966310244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:10:02,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:10:02,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:10:02,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370919409] [2022-07-19 21:10:02,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:10:02,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:10:02,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:10:02,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:10:02,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:10:02,698 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2022-07-19 21:10:02,699 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) [2022-07-19 21:10:02,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:10:02,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2022-07-19 21:10:02,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand