./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:42:59,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:42:59,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:42:59,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:42:59,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:42:59,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:42:59,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:42:59,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:42:59,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:42:59,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:42:59,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:42:59,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:42:59,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:42:59,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:42:59,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:42:59,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:42:59,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:42:59,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:42:59,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:42:59,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:42:59,470 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:42:59,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:42:59,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:42:59,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:42:59,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:42:59,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:42:59,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:42:59,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:42:59,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:42:59,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:42:59,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:42:59,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:42:59,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:42:59,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:42:59,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:42:59,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:42:59,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:42:59,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:42:59,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:42:59,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:42:59,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:42:59,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:42:59,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:42:59,533 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:42:59,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:42:59,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:42:59,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:42:59,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:42:59,535 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:42:59,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:42:59,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:42:59,536 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:42:59,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:42:59,537 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:42:59,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:42:59,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:42:59,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:42:59,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:42:59,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:42:59,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:42:59,538 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:42:59,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:42:59,539 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:42:59,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:42:59,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:42:59,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:42:59,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:42:59,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:42:59,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:42:59,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:42:59,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:42:59,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:42:59,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:42:59,541 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:42:59,541 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:42:59,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:42:59,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa [2022-07-21 08:42:59,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:42:59,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:42:59,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:42:59,876 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:42:59,877 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:42:59,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2022-07-21 08:42:59,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1d875b7/a171d0d840054452af93b064295e9b14/FLAG5c558fa5b [2022-07-21 08:43:00,516 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:43:00,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2022-07-21 08:43:00,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1d875b7/a171d0d840054452af93b064295e9b14/FLAG5c558fa5b [2022-07-21 08:43:00,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1d875b7/a171d0d840054452af93b064295e9b14 [2022-07-21 08:43:00,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:43:00,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:43:00,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:43:00,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:43:00,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:43:00,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:43:00" (1/1) ... [2022-07-21 08:43:00,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5a7198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:00, skipping insertion in model container [2022-07-21 08:43:00,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:43:00" (1/1) ... [2022-07-21 08:43:00,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:43:01,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:43:01,153 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2022-07-21 08:43:01,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:43:01,448 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:43:01,461 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2022-07-21 08:43:01,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:43:01,574 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:43:01,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01 WrapperNode [2022-07-21 08:43:01,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:43:01,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:43:01,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:43:01,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:43:01,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,657 INFO L137 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 366 [2022-07-21 08:43:01,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:43:01,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:43:01,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:43:01,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:43:01,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:43:01,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:43:01,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:43:01,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:43:01,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (1/1) ... [2022-07-21 08:43:01,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:43:01,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:43:01,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:43:01,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:43:01,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:43:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 08:43:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:43:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:43:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:43:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-21 08:43:01,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-21 08:43:01,809 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-21 08:43:01,810 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-21 08:43:01,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:43:01,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 08:43:01,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:43:01,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:43:01,813 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:43:01,948 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:43:01,950 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:43:02,575 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:43:03,119 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:43:03,119 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:43:03,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:43:03 BoogieIcfgContainer [2022-07-21 08:43:03,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:43:03,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:43:03,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:43:03,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:43:03,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:43:00" (1/3) ... [2022-07-21 08:43:03,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476b7924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:43:03, skipping insertion in model container [2022-07-21 08:43:03,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:43:01" (2/3) ... [2022-07-21 08:43:03,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476b7924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:43:03, skipping insertion in model container [2022-07-21 08:43:03,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:43:03" (3/3) ... [2022-07-21 08:43:03,130 INFO L111 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2022-07-21 08:43:03,135 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:43:03,143 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:43:03,144 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:43:03,144 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:43:03,212 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:43:03,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 99 transitions, 208 flow [2022-07-21 08:43:03,325 INFO L129 PetriNetUnfolder]: 2/97 cut-off events. [2022-07-21 08:43:03,325 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:43:03,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 97 events. 2/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-07-21 08:43:03,329 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 99 transitions, 208 flow [2022-07-21 08:43:03,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 97 transitions, 200 flow [2022-07-21 08:43:03,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:43:03,357 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@7a4246c3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@389d746f [2022-07-21 08:43:03,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-21 08:43:03,379 INFO L129 PetriNetUnfolder]: 0/59 cut-off events. [2022-07-21 08:43:03,379 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:43:03,380 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:03,380 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] [2022-07-21 08:43:03,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:03,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:03,386 INFO L85 PathProgramCache]: Analyzing trace with hash -491542144, now seen corresponding path program 1 times [2022-07-21 08:43:03,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:03,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919761147] [2022-07-21 08:43:03,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:03,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:03,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:03,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919761147] [2022-07-21 08:43:03,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919761147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:03,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:03,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:43:03,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097890382] [2022-07-21 08:43:03,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:03,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:43:03,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:03,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:43:03,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:43:03,747 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 99 [2022-07-21 08:43:03,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 97 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:03,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:03,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 99 [2022-07-21 08:43:03,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:03,915 INFO L129 PetriNetUnfolder]: 60/468 cut-off events. [2022-07-21 08:43:03,915 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-07-21 08:43:03,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 468 events. 60/468 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2638 event pairs, 25 based on Foata normal form. 23/460 useless extension candidates. Maximal degree in co-relation 546. Up to 88 conditions per place. [2022-07-21 08:43:03,921 INFO L132 encePairwiseOnDemand]: 94/99 looper letters, 14 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2022-07-21 08:43:03,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 98 transitions, 234 flow [2022-07-21 08:43:03,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:43:03,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:43:03,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2022-07-21 08:43:03,934 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9191919191919192 [2022-07-21 08:43:03,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2022-07-21 08:43:03,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2022-07-21 08:43:03,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:03,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2022-07-21 08:43:03,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:03,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:03,947 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:03,949 INFO L186 Difference]: Start difference. First operand has 102 places, 97 transitions, 200 flow. Second operand 3 states and 273 transitions. [2022-07-21 08:43:03,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 98 transitions, 234 flow [2022-07-21 08:43:03,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 98 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:43:03,955 INFO L242 Difference]: Finished difference. Result has 100 places, 93 transitions, 194 flow [2022-07-21 08:43:03,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=100, PETRI_TRANSITIONS=93} [2022-07-21 08:43:03,960 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, -2 predicate places. [2022-07-21 08:43:03,960 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 93 transitions, 194 flow [2022-07-21 08:43:03,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:03,962 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:03,962 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] [2022-07-21 08:43:03,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:43:03,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:03,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:03,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1591079342, now seen corresponding path program 1 times [2022-07-21 08:43:03,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:03,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327664406] [2022-07-21 08:43:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:03,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:04,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:04,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327664406] [2022-07-21 08:43:04,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327664406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:04,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:04,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:43:04,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382783459] [2022-07-21 08:43:04,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:04,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:43:04,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:04,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:43:04,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:43:04,220 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 99 [2022-07-21 08:43:04,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 93 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:04,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 99 [2022-07-21 08:43:04,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:04,630 INFO L129 PetriNetUnfolder]: 208/704 cut-off events. [2022-07-21 08:43:04,631 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-07-21 08:43:04,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 704 events. 208/704 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4181 event pairs, 42 based on Foata normal form. 0/682 useless extension candidates. Maximal degree in co-relation 1082. Up to 149 conditions per place. [2022-07-21 08:43:04,636 INFO L132 encePairwiseOnDemand]: 93/99 looper letters, 19 selfloop transitions, 2 changer transitions 46/134 dead transitions. [2022-07-21 08:43:04,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 134 transitions, 408 flow [2022-07-21 08:43:04,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:43:04,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:43:04,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 762 transitions. [2022-07-21 08:43:04,644 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8552188552188552 [2022-07-21 08:43:04,644 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 762 transitions. [2022-07-21 08:43:04,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 762 transitions. [2022-07-21 08:43:04,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:04,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 762 transitions. [2022-07-21 08:43:04,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 84.66666666666667) internal successors, (762), 9 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,653 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,654 INFO L186 Difference]: Start difference. First operand has 100 places, 93 transitions, 194 flow. Second operand 9 states and 762 transitions. [2022-07-21 08:43:04,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 134 transitions, 408 flow [2022-07-21 08:43:04,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 134 transitions, 390 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:43:04,659 INFO L242 Difference]: Finished difference. Result has 113 places, 83 transitions, 190 flow [2022-07-21 08:43:04,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=113, PETRI_TRANSITIONS=83} [2022-07-21 08:43:04,660 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 11 predicate places. [2022-07-21 08:43:04,660 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 83 transitions, 190 flow [2022-07-21 08:43:04,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,661 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:04,661 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] [2022-07-21 08:43:04,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:43:04,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:04,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:04,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1642654892, now seen corresponding path program 1 times [2022-07-21 08:43:04,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:04,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273485484] [2022-07-21 08:43:04,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:04,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:04,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:04,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273485484] [2022-07-21 08:43:04,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273485484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:04,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:04,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:43:04,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142880330] [2022-07-21 08:43:04,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:04,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:43:04,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:04,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:43:04,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:43:04,869 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 99 [2022-07-21 08:43:04,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 83 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:04,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:04,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 99 [2022-07-21 08:43:04,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:05,164 INFO L129 PetriNetUnfolder]: 127/381 cut-off events. [2022-07-21 08:43:05,165 INFO L130 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-07-21 08:43:05,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 381 events. 127/381 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1569 event pairs, 36 based on Foata normal form. 10/372 useless extension candidates. Maximal degree in co-relation 699. Up to 120 conditions per place. [2022-07-21 08:43:05,167 INFO L132 encePairwiseOnDemand]: 93/99 looper letters, 19 selfloop transitions, 2 changer transitions 25/112 dead transitions. [2022-07-21 08:43:05,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 112 transitions, 361 flow [2022-07-21 08:43:05,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:43:05,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:43:05,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 741 transitions. [2022-07-21 08:43:05,174 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8316498316498316 [2022-07-21 08:43:05,174 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 741 transitions. [2022-07-21 08:43:05,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 741 transitions. [2022-07-21 08:43:05,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:05,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 741 transitions. [2022-07-21 08:43:05,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.33333333333333) internal successors, (741), 9 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:05,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:05,180 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:05,180 INFO L186 Difference]: Start difference. First operand has 113 places, 83 transitions, 190 flow. Second operand 9 states and 741 transitions. [2022-07-21 08:43:05,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 112 transitions, 361 flow [2022-07-21 08:43:05,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 112 transitions, 327 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-21 08:43:05,186 INFO L242 Difference]: Finished difference. Result has 104 places, 83 transitions, 194 flow [2022-07-21 08:43:05,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=194, PETRI_PLACES=104, PETRI_TRANSITIONS=83} [2022-07-21 08:43:05,187 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 2 predicate places. [2022-07-21 08:43:05,188 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 83 transitions, 194 flow [2022-07-21 08:43:05,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:05,188 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:05,189 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] [2022-07-21 08:43:05,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:43:05,189 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:05,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:05,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1028990539, now seen corresponding path program 1 times [2022-07-21 08:43:05,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:05,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432212409] [2022-07-21 08:43:05,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:05,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:05,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:05,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432212409] [2022-07-21 08:43:05,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432212409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:05,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:05,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 08:43:05,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981179970] [2022-07-21 08:43:05,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:05,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 08:43:05,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:05,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 08:43:05,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:43:05,610 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 99 [2022-07-21 08:43:05,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 83 transitions, 194 flow. Second operand has 14 states, 14 states have (on average 74.28571428571429) internal successors, (1040), 14 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:05,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:05,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 99 [2022-07-21 08:43:05,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:06,069 INFO L129 PetriNetUnfolder]: 120/374 cut-off events. [2022-07-21 08:43:06,069 INFO L130 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2022-07-21 08:43:06,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 374 events. 120/374 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1511 event pairs, 16 based on Foata normal form. 7/358 useless extension candidates. Maximal degree in co-relation 691. Up to 136 conditions per place. [2022-07-21 08:43:06,074 INFO L132 encePairwiseOnDemand]: 84/99 looper letters, 22 selfloop transitions, 13 changer transitions 22/119 dead transitions. [2022-07-21 08:43:06,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 119 transitions, 404 flow [2022-07-21 08:43:06,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:43:06,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:43:06,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1081 transitions. [2022-07-21 08:43:06,078 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7799422799422799 [2022-07-21 08:43:06,078 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1081 transitions. [2022-07-21 08:43:06,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1081 transitions. [2022-07-21 08:43:06,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:06,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1081 transitions. [2022-07-21 08:43:06,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 77.21428571428571) internal successors, (1081), 14 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,087 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,087 INFO L186 Difference]: Start difference. First operand has 104 places, 83 transitions, 194 flow. Second operand 14 states and 1081 transitions. [2022-07-21 08:43:06,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 119 transitions, 404 flow [2022-07-21 08:43:06,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 119 transitions, 372 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-07-21 08:43:06,094 INFO L242 Difference]: Finished difference. Result has 110 places, 90 transitions, 262 flow [2022-07-21 08:43:06,094 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=262, PETRI_PLACES=110, PETRI_TRANSITIONS=90} [2022-07-21 08:43:06,096 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 8 predicate places. [2022-07-21 08:43:06,096 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 90 transitions, 262 flow [2022-07-21 08:43:06,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 74.28571428571429) internal successors, (1040), 14 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,105 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:06,106 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] [2022-07-21 08:43:06,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:43:06,106 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:06,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:06,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1474894337, now seen corresponding path program 2 times [2022-07-21 08:43:06,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:06,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924743209] [2022-07-21 08:43:06,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:06,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:06,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:06,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924743209] [2022-07-21 08:43:06,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924743209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:06,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:06,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 08:43:06,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897748541] [2022-07-21 08:43:06,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:06,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 08:43:06,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:06,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 08:43:06,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-21 08:43:06,461 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 99 [2022-07-21 08:43:06,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 90 transitions, 262 flow. Second operand has 13 states, 13 states have (on average 73.46153846153847) internal successors, (955), 13 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,463 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:06,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 99 [2022-07-21 08:43:06,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:06,979 INFO L129 PetriNetUnfolder]: 124/391 cut-off events. [2022-07-21 08:43:06,979 INFO L130 PetriNetUnfolder]: For 594/610 co-relation queries the response was YES. [2022-07-21 08:43:06,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 391 events. 124/391 cut-off events. For 594/610 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1575 event pairs, 23 based on Foata normal form. 14/378 useless extension candidates. Maximal degree in co-relation 1085. Up to 151 conditions per place. [2022-07-21 08:43:06,983 INFO L132 encePairwiseOnDemand]: 84/99 looper letters, 28 selfloop transitions, 17 changer transitions 22/128 dead transitions. [2022-07-21 08:43:06,983 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 128 transitions, 642 flow [2022-07-21 08:43:06,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:43:06,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 08:43:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1146 transitions. [2022-07-21 08:43:06,987 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7717171717171717 [2022-07-21 08:43:06,987 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1146 transitions. [2022-07-21 08:43:06,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1146 transitions. [2022-07-21 08:43:06,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:06,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1146 transitions. [2022-07-21 08:43:06,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 76.4) internal successors, (1146), 15 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,993 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:06,994 INFO L186 Difference]: Start difference. First operand has 110 places, 90 transitions, 262 flow. Second operand 15 states and 1146 transitions. [2022-07-21 08:43:06,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 128 transitions, 642 flow [2022-07-21 08:43:06,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 128 transitions, 623 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-07-21 08:43:06,999 INFO L242 Difference]: Finished difference. Result has 120 places, 98 transitions, 378 flow [2022-07-21 08:43:06,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=378, PETRI_PLACES=120, PETRI_TRANSITIONS=98} [2022-07-21 08:43:07,000 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 18 predicate places. [2022-07-21 08:43:07,000 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 98 transitions, 378 flow [2022-07-21 08:43:07,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 73.46153846153847) internal successors, (955), 13 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:07,001 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:07,001 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] [2022-07-21 08:43:07,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:43:07,002 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:07,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:07,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1191993787, now seen corresponding path program 3 times [2022-07-21 08:43:07,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:07,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284844312] [2022-07-21 08:43:07,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:07,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:07,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:07,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284844312] [2022-07-21 08:43:07,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284844312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:07,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:07,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:43:07,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549694819] [2022-07-21 08:43:07,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:07,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:43:07,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:07,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:43:07,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:43:07,213 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 99 [2022-07-21 08:43:07,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 98 transitions, 378 flow. Second operand has 10 states, 10 states have (on average 73.9) internal successors, (739), 10 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:07,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:07,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 99 [2022-07-21 08:43:07,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:07,701 INFO L129 PetriNetUnfolder]: 130/401 cut-off events. [2022-07-21 08:43:07,701 INFO L130 PetriNetUnfolder]: For 2046/2168 co-relation queries the response was YES. [2022-07-21 08:43:07,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1594 conditions, 401 events. 130/401 cut-off events. For 2046/2168 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1730 event pairs, 18 based on Foata normal form. 32/407 useless extension candidates. Maximal degree in co-relation 1521. Up to 156 conditions per place. [2022-07-21 08:43:07,705 INFO L132 encePairwiseOnDemand]: 86/99 looper letters, 27 selfloop transitions, 18 changer transitions 25/131 dead transitions. [2022-07-21 08:43:07,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 131 transitions, 879 flow [2022-07-21 08:43:07,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:43:07,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-21 08:43:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 923 transitions. [2022-07-21 08:43:07,708 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7769360269360269 [2022-07-21 08:43:07,709 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 923 transitions. [2022-07-21 08:43:07,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 923 transitions. [2022-07-21 08:43:07,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:07,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 923 transitions. [2022-07-21 08:43:07,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 76.91666666666667) internal successors, (923), 12 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:07,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 99.0) internal successors, (1287), 13 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:07,713 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 99.0) internal successors, (1287), 13 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:07,713 INFO L186 Difference]: Start difference. First operand has 120 places, 98 transitions, 378 flow. Second operand 12 states and 923 transitions. [2022-07-21 08:43:07,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 131 transitions, 879 flow [2022-07-21 08:43:07,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 131 transitions, 725 flow, removed 73 selfloop flow, removed 10 redundant places. [2022-07-21 08:43:07,720 INFO L242 Difference]: Finished difference. Result has 123 places, 102 transitions, 469 flow [2022-07-21 08:43:07,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=469, PETRI_PLACES=123, PETRI_TRANSITIONS=102} [2022-07-21 08:43:07,721 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 21 predicate places. [2022-07-21 08:43:07,722 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 102 transitions, 469 flow [2022-07-21 08:43:07,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.9) internal successors, (739), 10 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:07,722 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:07,722 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] [2022-07-21 08:43:07,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:43:07,722 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:07,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:07,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1474989084, now seen corresponding path program 1 times [2022-07-21 08:43:07,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:07,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328231996] [2022-07-21 08:43:07,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:07,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:08,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:08,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:08,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328231996] [2022-07-21 08:43:08,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328231996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:08,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:08,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 08:43:08,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305708474] [2022-07-21 08:43:08,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:08,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 08:43:08,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:08,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 08:43:08,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:43:08,175 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 99 [2022-07-21 08:43:08,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 102 transitions, 469 flow. Second operand has 14 states, 14 states have (on average 71.57142857142857) internal successors, (1002), 14 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:08,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:08,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 99 [2022-07-21 08:43:08,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:08,715 INFO L129 PetriNetUnfolder]: 115/387 cut-off events. [2022-07-21 08:43:08,715 INFO L130 PetriNetUnfolder]: For 2108/2189 co-relation queries the response was YES. [2022-07-21 08:43:08,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 387 events. 115/387 cut-off events. For 2108/2189 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1644 event pairs, 23 based on Foata normal form. 13/368 useless extension candidates. Maximal degree in co-relation 1571. Up to 162 conditions per place. [2022-07-21 08:43:08,719 INFO L132 encePairwiseOnDemand]: 86/99 looper letters, 49 selfloop transitions, 14 changer transitions 13/135 dead transitions. [2022-07-21 08:43:08,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 135 transitions, 958 flow [2022-07-21 08:43:08,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:43:08,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 08:43:08,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1105 transitions. [2022-07-21 08:43:08,724 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7441077441077442 [2022-07-21 08:43:08,724 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1105 transitions. [2022-07-21 08:43:08,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1105 transitions. [2022-07-21 08:43:08,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:08,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1105 transitions. [2022-07-21 08:43:08,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 73.66666666666667) internal successors, (1105), 15 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:08,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:08,731 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:08,731 INFO L186 Difference]: Start difference. First operand has 123 places, 102 transitions, 469 flow. Second operand 15 states and 1105 transitions. [2022-07-21 08:43:08,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 135 transitions, 958 flow [2022-07-21 08:43:08,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 135 transitions, 893 flow, removed 29 selfloop flow, removed 6 redundant places. [2022-07-21 08:43:08,739 INFO L242 Difference]: Finished difference. Result has 133 places, 108 transitions, 561 flow [2022-07-21 08:43:08,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=561, PETRI_PLACES=133, PETRI_TRANSITIONS=108} [2022-07-21 08:43:08,740 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 31 predicate places. [2022-07-21 08:43:08,741 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 108 transitions, 561 flow [2022-07-21 08:43:08,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 71.57142857142857) internal successors, (1002), 14 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:08,741 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:08,742 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] [2022-07-21 08:43:08,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:43:08,742 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:08,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:08,743 INFO L85 PathProgramCache]: Analyzing trace with hash 487450421, now seen corresponding path program 1 times [2022-07-21 08:43:08,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:08,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617718357] [2022-07-21 08:43:08,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:08,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:08,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:08,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617718357] [2022-07-21 08:43:08,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617718357] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:08,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:08,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:43:08,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072402923] [2022-07-21 08:43:08,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:08,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:43:08,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:08,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:43:08,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:43:08,887 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 99 [2022-07-21 08:43:08,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 108 transitions, 561 flow. Second operand has 7 states, 7 states have (on average 77.42857142857143) internal successors, (542), 7 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:08,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:08,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 99 [2022-07-21 08:43:08,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:09,162 INFO L129 PetriNetUnfolder]: 144/471 cut-off events. [2022-07-21 08:43:09,163 INFO L130 PetriNetUnfolder]: For 2853/3140 co-relation queries the response was YES. [2022-07-21 08:43:09,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2163 conditions, 471 events. 144/471 cut-off events. For 2853/3140 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2347 event pairs, 34 based on Foata normal form. 45/486 useless extension candidates. Maximal degree in co-relation 2082. Up to 186 conditions per place. [2022-07-21 08:43:09,168 INFO L132 encePairwiseOnDemand]: 89/99 looper letters, 37 selfloop transitions, 9 changer transitions 26/137 dead transitions. [2022-07-21 08:43:09,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 137 transitions, 1029 flow [2022-07-21 08:43:09,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:43:09,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:43:09,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 565 transitions. [2022-07-21 08:43:09,184 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8152958152958153 [2022-07-21 08:43:09,184 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 565 transitions. [2022-07-21 08:43:09,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 565 transitions. [2022-07-21 08:43:09,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:09,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 565 transitions. [2022-07-21 08:43:09,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:09,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 99.0) internal successors, (792), 8 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:09,188 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 99.0) internal successors, (792), 8 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:09,188 INFO L186 Difference]: Start difference. First operand has 133 places, 108 transitions, 561 flow. Second operand 7 states and 565 transitions. [2022-07-21 08:43:09,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 137 transitions, 1029 flow [2022-07-21 08:43:09,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 137 transitions, 915 flow, removed 49 selfloop flow, removed 14 redundant places. [2022-07-21 08:43:09,198 INFO L242 Difference]: Finished difference. Result has 124 places, 111 transitions, 572 flow [2022-07-21 08:43:09,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=572, PETRI_PLACES=124, PETRI_TRANSITIONS=111} [2022-07-21 08:43:09,199 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 22 predicate places. [2022-07-21 08:43:09,199 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 111 transitions, 572 flow [2022-07-21 08:43:09,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.42857142857143) internal successors, (542), 7 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:09,200 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:09,200 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] [2022-07-21 08:43:09,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:43:09,200 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:09,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:09,201 INFO L85 PathProgramCache]: Analyzing trace with hash 342414929, now seen corresponding path program 2 times [2022-07-21 08:43:09,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:09,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849964685] [2022-07-21 08:43:09,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:09,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:09,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:09,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849964685] [2022-07-21 08:43:09,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849964685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:09,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:09,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:43:09,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158752698] [2022-07-21 08:43:09,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:09,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:43:09,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:09,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:43:09,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:43:09,496 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 99 [2022-07-21 08:43:09,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 111 transitions, 572 flow. Second operand has 11 states, 11 states have (on average 72.0) internal successors, (792), 11 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:09,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:09,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 99 [2022-07-21 08:43:09,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:10,058 INFO L129 PetriNetUnfolder]: 101/388 cut-off events. [2022-07-21 08:43:10,059 INFO L130 PetriNetUnfolder]: For 1393/1877 co-relation queries the response was YES. [2022-07-21 08:43:10,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 388 events. 101/388 cut-off events. For 1393/1877 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1790 event pairs, 7 based on Foata normal form. 32/399 useless extension candidates. Maximal degree in co-relation 1507. Up to 133 conditions per place. [2022-07-21 08:43:10,062 INFO L132 encePairwiseOnDemand]: 85/99 looper letters, 43 selfloop transitions, 22 changer transitions 19/143 dead transitions. [2022-07-21 08:43:10,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 143 transitions, 1027 flow [2022-07-21 08:43:10,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:43:10,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:43:10,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 971 transitions. [2022-07-21 08:43:10,066 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7544677544677545 [2022-07-21 08:43:10,066 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 971 transitions. [2022-07-21 08:43:10,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 971 transitions. [2022-07-21 08:43:10,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:10,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 971 transitions. [2022-07-21 08:43:10,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.6923076923077) internal successors, (971), 13 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:10,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:10,074 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:10,075 INFO L186 Difference]: Start difference. First operand has 124 places, 111 transitions, 572 flow. Second operand 13 states and 971 transitions. [2022-07-21 08:43:10,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 143 transitions, 1027 flow [2022-07-21 08:43:10,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 143 transitions, 992 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-07-21 08:43:10,083 INFO L242 Difference]: Finished difference. Result has 135 places, 116 transitions, 717 flow [2022-07-21 08:43:10,084 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=717, PETRI_PLACES=135, PETRI_TRANSITIONS=116} [2022-07-21 08:43:10,085 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 33 predicate places. [2022-07-21 08:43:10,085 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 116 transitions, 717 flow [2022-07-21 08:43:10,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 72.0) internal successors, (792), 11 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:10,086 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:10,086 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] [2022-07-21 08:43:10,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:43:10,086 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:10,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:10,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1668573592, now seen corresponding path program 2 times [2022-07-21 08:43:10,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:10,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117520482] [2022-07-21 08:43:10,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:10,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:10,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:10,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:10,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117520482] [2022-07-21 08:43:10,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117520482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:10,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:10,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 08:43:10,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144216323] [2022-07-21 08:43:10,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:10,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 08:43:10,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:10,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 08:43:10,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:43:10,580 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 99 [2022-07-21 08:43:10,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 116 transitions, 717 flow. Second operand has 15 states, 15 states have (on average 71.46666666666667) internal successors, (1072), 15 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:10,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:10,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 99 [2022-07-21 08:43:10,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:11,175 INFO L129 PetriNetUnfolder]: 92/370 cut-off events. [2022-07-21 08:43:11,175 INFO L130 PetriNetUnfolder]: For 2339/2799 co-relation queries the response was YES. [2022-07-21 08:43:11,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1751 conditions, 370 events. 92/370 cut-off events. For 2339/2799 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1705 event pairs, 9 based on Foata normal form. 29/379 useless extension candidates. Maximal degree in co-relation 1667. Up to 131 conditions per place. [2022-07-21 08:43:11,179 INFO L132 encePairwiseOnDemand]: 87/99 looper letters, 51 selfloop transitions, 16 changer transitions 13/139 dead transitions. [2022-07-21 08:43:11,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 139 transitions, 1144 flow [2022-07-21 08:43:11,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:43:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 08:43:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1102 transitions. [2022-07-21 08:43:11,183 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7420875420875421 [2022-07-21 08:43:11,183 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1102 transitions. [2022-07-21 08:43:11,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1102 transitions. [2022-07-21 08:43:11,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:11,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1102 transitions. [2022-07-21 08:43:11,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 73.46666666666667) internal successors, (1102), 15 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:11,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:11,190 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:11,190 INFO L186 Difference]: Start difference. First operand has 135 places, 116 transitions, 717 flow. Second operand 15 states and 1102 transitions. [2022-07-21 08:43:11,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 139 transitions, 1144 flow [2022-07-21 08:43:11,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 139 transitions, 1089 flow, removed 23 selfloop flow, removed 10 redundant places. [2022-07-21 08:43:11,200 INFO L242 Difference]: Finished difference. Result has 140 places, 118 transitions, 785 flow [2022-07-21 08:43:11,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=785, PETRI_PLACES=140, PETRI_TRANSITIONS=118} [2022-07-21 08:43:11,201 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 38 predicate places. [2022-07-21 08:43:11,201 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 118 transitions, 785 flow [2022-07-21 08:43:11,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 71.46666666666667) internal successors, (1072), 15 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:11,202 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:11,202 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] [2022-07-21 08:43:11,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:43:11,203 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:11,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:11,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1394114376, now seen corresponding path program 3 times [2022-07-21 08:43:11,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:11,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354838279] [2022-07-21 08:43:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:11,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:11,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:11,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354838279] [2022-07-21 08:43:11,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354838279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:11,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:11,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:43:11,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777485825] [2022-07-21 08:43:11,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:11,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:43:11,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:11,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:43:11,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:43:11,474 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 99 [2022-07-21 08:43:11,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 118 transitions, 785 flow. Second operand has 10 states, 10 states have (on average 74.9) internal successors, (749), 10 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:11,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:11,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 99 [2022-07-21 08:43:11,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:11,862 INFO L129 PetriNetUnfolder]: 88/372 cut-off events. [2022-07-21 08:43:11,862 INFO L130 PetriNetUnfolder]: For 2364/2808 co-relation queries the response was YES. [2022-07-21 08:43:11,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 372 events. 88/372 cut-off events. For 2364/2808 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1737 event pairs, 8 based on Foata normal form. 26/377 useless extension candidates. Maximal degree in co-relation 1707. Up to 135 conditions per place. [2022-07-21 08:43:11,866 INFO L132 encePairwiseOnDemand]: 89/99 looper letters, 51 selfloop transitions, 14 changer transitions 16/143 dead transitions. [2022-07-21 08:43:11,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 143 transitions, 1280 flow [2022-07-21 08:43:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:43:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-21 08:43:11,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 926 transitions. [2022-07-21 08:43:11,869 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7794612794612794 [2022-07-21 08:43:11,869 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 926 transitions. [2022-07-21 08:43:11,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 926 transitions. [2022-07-21 08:43:11,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:11,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 926 transitions. [2022-07-21 08:43:11,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 77.16666666666667) internal successors, (926), 12 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:11,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 99.0) internal successors, (1287), 13 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:11,875 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 99.0) internal successors, (1287), 13 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:11,875 INFO L186 Difference]: Start difference. First operand has 140 places, 118 transitions, 785 flow. Second operand 12 states and 926 transitions. [2022-07-21 08:43:11,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 143 transitions, 1280 flow [2022-07-21 08:43:11,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 143 transitions, 1157 flow, removed 50 selfloop flow, removed 13 redundant places. [2022-07-21 08:43:11,885 INFO L242 Difference]: Finished difference. Result has 139 places, 121 transitions, 835 flow [2022-07-21 08:43:11,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=835, PETRI_PLACES=139, PETRI_TRANSITIONS=121} [2022-07-21 08:43:11,886 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 37 predicate places. [2022-07-21 08:43:11,887 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 121 transitions, 835 flow [2022-07-21 08:43:11,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.9) internal successors, (749), 10 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:11,887 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:11,888 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] [2022-07-21 08:43:11,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:43:11,888 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:11,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:11,889 INFO L85 PathProgramCache]: Analyzing trace with hash 427079432, now seen corresponding path program 1 times [2022-07-21 08:43:11,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:11,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517299026] [2022-07-21 08:43:11,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:11,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:12,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:12,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517299026] [2022-07-21 08:43:12,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517299026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:12,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:12,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:43:12,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685219070] [2022-07-21 08:43:12,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:12,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:43:12,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:12,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:43:12,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:43:12,094 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 99 [2022-07-21 08:43:12,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 121 transitions, 835 flow. Second operand has 11 states, 11 states have (on average 71.9090909090909) internal successors, (791), 11 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) [2022-07-21 08:43:12,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:12,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 99 [2022-07-21 08:43:12,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:12,668 INFO L129 PetriNetUnfolder]: 259/752 cut-off events. [2022-07-21 08:43:12,668 INFO L130 PetriNetUnfolder]: For 4533/4796 co-relation queries the response was YES. [2022-07-21 08:43:12,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3284 conditions, 752 events. 259/752 cut-off events. For 4533/4796 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4406 event pairs, 46 based on Foata normal form. 72/809 useless extension candidates. Maximal degree in co-relation 3201. Up to 224 conditions per place. [2022-07-21 08:43:12,676 INFO L132 encePairwiseOnDemand]: 85/99 looper letters, 57 selfloop transitions, 18 changer transitions 69/204 dead transitions. [2022-07-21 08:43:12,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 204 transitions, 1959 flow [2022-07-21 08:43:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:43:12,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 08:43:12,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1147 transitions. [2022-07-21 08:43:12,679 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7723905723905724 [2022-07-21 08:43:12,679 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1147 transitions. [2022-07-21 08:43:12,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1147 transitions. [2022-07-21 08:43:12,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:12,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1147 transitions. [2022-07-21 08:43:12,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 76.46666666666667) internal successors, (1147), 15 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:12,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:12,685 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:12,685 INFO L186 Difference]: Start difference. First operand has 139 places, 121 transitions, 835 flow. Second operand 15 states and 1147 transitions. [2022-07-21 08:43:12,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 204 transitions, 1959 flow [2022-07-21 08:43:12,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 204 transitions, 1814 flow, removed 68 selfloop flow, removed 8 redundant places. [2022-07-21 08:43:12,699 INFO L242 Difference]: Finished difference. Result has 151 places, 117 transitions, 807 flow [2022-07-21 08:43:12,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=807, PETRI_PLACES=151, PETRI_TRANSITIONS=117} [2022-07-21 08:43:12,700 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 49 predicate places. [2022-07-21 08:43:12,700 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 117 transitions, 807 flow [2022-07-21 08:43:12,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 71.9090909090909) internal successors, (791), 11 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) [2022-07-21 08:43:12,701 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:12,701 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] [2022-07-21 08:43:12,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:43:12,702 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:12,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:12,702 INFO L85 PathProgramCache]: Analyzing trace with hash -2035540178, now seen corresponding path program 2 times [2022-07-21 08:43:12,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:12,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020330270] [2022-07-21 08:43:12,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:12,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:12,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:12,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020330270] [2022-07-21 08:43:12,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020330270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:12,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:12,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:43:12,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534324384] [2022-07-21 08:43:12,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:12,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:43:12,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:12,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:43:12,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:43:12,931 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 99 [2022-07-21 08:43:12,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 117 transitions, 807 flow. Second operand has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 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) [2022-07-21 08:43:12,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:12,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 99 [2022-07-21 08:43:12,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:13,284 INFO L129 PetriNetUnfolder]: 102/417 cut-off events. [2022-07-21 08:43:13,284 INFO L130 PetriNetUnfolder]: For 2956/3594 co-relation queries the response was YES. [2022-07-21 08:43:13,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2029 conditions, 417 events. 102/417 cut-off events. For 2956/3594 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2041 event pairs, 13 based on Foata normal form. 41/438 useless extension candidates. Maximal degree in co-relation 1939. Up to 126 conditions per place. [2022-07-21 08:43:13,289 INFO L132 encePairwiseOnDemand]: 90/99 looper letters, 42 selfloop transitions, 9 changer transitions 30/146 dead transitions. [2022-07-21 08:43:13,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 146 transitions, 1340 flow [2022-07-21 08:43:13,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:43:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:43:13,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 701 transitions. [2022-07-21 08:43:13,291 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7867564534231201 [2022-07-21 08:43:13,291 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 701 transitions. [2022-07-21 08:43:13,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 701 transitions. [2022-07-21 08:43:13,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:13,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 701 transitions. [2022-07-21 08:43:13,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.88888888888889) internal successors, (701), 9 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:13,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:13,295 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:13,295 INFO L186 Difference]: Start difference. First operand has 151 places, 117 transitions, 807 flow. Second operand 9 states and 701 transitions. [2022-07-21 08:43:13,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 146 transitions, 1340 flow [2022-07-21 08:43:13,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 146 transitions, 1280 flow, removed 15 selfloop flow, removed 8 redundant places. [2022-07-21 08:43:13,305 INFO L242 Difference]: Finished difference. Result has 147 places, 112 transitions, 740 flow [2022-07-21 08:43:13,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=740, PETRI_PLACES=147, PETRI_TRANSITIONS=112} [2022-07-21 08:43:13,306 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 45 predicate places. [2022-07-21 08:43:13,307 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 112 transitions, 740 flow [2022-07-21 08:43:13,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 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) [2022-07-21 08:43:13,307 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:43:13,307 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] [2022-07-21 08:43:13,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:43:13,308 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-21 08:43:13,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:43:13,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1673830086, now seen corresponding path program 3 times [2022-07-21 08:43:13,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:43:13,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483427642] [2022-07-21 08:43:13,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:43:13,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:43:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:43:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:43:13,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:43:13,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483427642] [2022-07-21 08:43:13,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483427642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:43:13,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:43:13,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 08:43:13,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27818650] [2022-07-21 08:43:13,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:43:13,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 08:43:13,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:43:13,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 08:43:13,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-21 08:43:13,581 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 99 [2022-07-21 08:43:13,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 112 transitions, 740 flow. Second operand has 12 states, 12 states have (on average 73.75) internal successors, (885), 12 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:13,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:43:13,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 99 [2022-07-21 08:43:13,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:43:13,874 INFO L129 PetriNetUnfolder]: 43/221 cut-off events. [2022-07-21 08:43:13,874 INFO L130 PetriNetUnfolder]: For 1369/1931 co-relation queries the response was YES. [2022-07-21 08:43:13,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 221 events. 43/221 cut-off events. For 1369/1931 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 675 event pairs, 9 based on Foata normal form. 18/223 useless extension candidates. Maximal degree in co-relation 963. Up to 56 conditions per place. [2022-07-21 08:43:13,876 INFO L132 encePairwiseOnDemand]: 90/99 looper letters, 0 selfloop transitions, 0 changer transitions 119/119 dead transitions. [2022-07-21 08:43:13,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 119 transitions, 967 flow [2022-07-21 08:43:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:43:13,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:43:13,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 753 transitions. [2022-07-21 08:43:13,878 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7606060606060606 [2022-07-21 08:43:13,878 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 753 transitions. [2022-07-21 08:43:13,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 753 transitions. [2022-07-21 08:43:13,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:43:13,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 753 transitions. [2022-07-21 08:43:13,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.3) internal successors, (753), 10 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:13,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:13,882 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:13,882 INFO L186 Difference]: Start difference. First operand has 147 places, 112 transitions, 740 flow. Second operand 10 states and 753 transitions. [2022-07-21 08:43:13,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 119 transitions, 967 flow [2022-07-21 08:43:13,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 119 transitions, 905 flow, removed 15 selfloop flow, removed 13 redundant places. [2022-07-21 08:43:13,889 INFO L242 Difference]: Finished difference. Result has 137 places, 0 transitions, 0 flow [2022-07-21 08:43:13,889 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=137, PETRI_TRANSITIONS=0} [2022-07-21 08:43:13,889 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 35 predicate places. [2022-07-21 08:43:13,890 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 0 transitions, 0 flow [2022-07-21 08:43:13,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.75) internal successors, (885), 12 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:43:13,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-21 08:43:13,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-21 08:43:13,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-21 08:43:13,894 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-21 08:43:13,894 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-21 08:43:13,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:43:13,895 INFO L356 BasicCegarLoop]: Path program histogram: [3, 3, 3, 2, 1, 1, 1] [2022-07-21 08:43:13,900 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 08:43:13,900 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:43:13,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:43:13 BasicIcfg [2022-07-21 08:43:13,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:43:13,905 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:43:13,905 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:43:13,906 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:43:13,906 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:43:03" (3/4) ... [2022-07-21 08:43:13,908 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 08:43:13,912 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-21 08:43:13,913 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-21 08:43:13,919 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2022-07-21 08:43:13,920 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-07-21 08:43:13,920 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-07-21 08:43:13,921 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 08:43:13,963 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:43:13,963 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:43:13,964 INFO L158 Benchmark]: Toolchain (without parser) took 13011.18ms. Allocated memory was 54.5MB in the beginning and 251.7MB in the end (delta: 197.1MB). Free memory was 29.7MB in the beginning and 194.5MB in the end (delta: -164.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-07-21 08:43:13,964 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 54.5MB. Free memory is still 36.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:43:13,965 INFO L158 Benchmark]: CACSL2BoogieTranslator took 620.45ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 29.4MB in the beginning and 46.0MB in the end (delta: -16.6MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2022-07-21 08:43:13,965 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.28ms. Allocated memory is still 67.1MB. Free memory was 46.0MB in the beginning and 42.4MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 08:43:13,965 INFO L158 Benchmark]: Boogie Preprocessor took 56.62ms. Allocated memory is still 67.1MB. Free memory was 42.4MB in the beginning and 39.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:43:13,965 INFO L158 Benchmark]: RCFGBuilder took 1406.93ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 39.7MB in the beginning and 49.4MB in the end (delta: -9.8MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2022-07-21 08:43:13,966 INFO L158 Benchmark]: TraceAbstraction took 10780.11ms. Allocated memory was 98.6MB in the beginning and 251.7MB in the end (delta: 153.1MB). Free memory was 49.4MB in the beginning and 199.8MB in the end (delta: -150.3MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2022-07-21 08:43:13,966 INFO L158 Benchmark]: Witness Printer took 58.28ms. Allocated memory is still 251.7MB. Free memory was 199.8MB in the beginning and 194.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 08:43:13,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 54.5MB. Free memory is still 36.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 620.45ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 29.4MB in the beginning and 46.0MB in the end (delta: -16.6MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.28ms. Allocated memory is still 67.1MB. Free memory was 46.0MB in the beginning and 42.4MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.62ms. Allocated memory is still 67.1MB. Free memory was 42.4MB in the beginning and 39.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1406.93ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 39.7MB in the beginning and 49.4MB in the end (delta: -9.8MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * TraceAbstraction took 10780.11ms. Allocated memory was 98.6MB in the beginning and 251.7MB in the end (delta: 153.1MB). Free memory was 49.4MB in the beginning and 199.8MB in the end (delta: -150.3MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * Witness Printer took 58.28ms. Allocated memory is still 251.7MB. Free memory was 199.8MB in the beginning and 194.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 120 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.6s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 605 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 605 mSDsluCounter, 750 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1047 mSDsCounter, 381 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2426 IncrementalHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 381 mSolverCounterUnsat, 126 mSDtfsCounter, 2426 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 30 SyntacticMatches, 8 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=835occurred in iteration=11, InterpolantAutomatonStates: 158, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 998 NumberOfCodeBlocks, 998 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 984 ConstructedInterpolants, 0 QuantifiedInterpolants, 6957 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-21 08:43:14,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE