./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a72b3b3683b5d2b2d35965fc1a3189152678e29fe154c9fbeb2d06d1447980e3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:08:41,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:08:41,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:08:41,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:08:41,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:08:41,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:08:41,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:08:41,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:08:41,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:08:41,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:08:41,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:08:41,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:08:41,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:08:41,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:08:41,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:08:41,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:08:41,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:08:41,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:08:41,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:08:41,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:08:41,474 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:08:41,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:08:41,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:08:41,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:08:41,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:08:41,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:08:41,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:08:41,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:08:41,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:08:41,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:08:41,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:08:41,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:08:41,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:08:41,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:08:41,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:08:41,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:08:41,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:08:41,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:08:41,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:08:41,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:08:41,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:08:41,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:08:41,498 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:08:41,526 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:08:41,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:08:41,527 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:08:41,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:08:41,528 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:08:41,528 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:08:41,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:08:41,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:08:41,530 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:08:41,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:08:41,531 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:08:41,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:08:41,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:08:41,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:08:41,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:08:41,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:08:41,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:08:41,532 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:08:41,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:08:41,532 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:08:41,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:08:41,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:08:41,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:08:41,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:08:41,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:08:41,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:08:41,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:08:41,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:08:41,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:08:41,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:08:41,535 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:08:41,535 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:08:41,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:08:41,535 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a72b3b3683b5d2b2d35965fc1a3189152678e29fe154c9fbeb2d06d1447980e3 [2022-07-19 21:08:41,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:08:41,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:08:41,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:08:41,821 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:08:41,822 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:08:41,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i [2022-07-19 21:08:41,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949b133f3/942ef675a3004224920c5c45fce6d24f/FLAG31b803e77 [2022-07-19 21:08:42,352 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:08:42,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i [2022-07-19 21:08:42,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949b133f3/942ef675a3004224920c5c45fce6d24f/FLAG31b803e77 [2022-07-19 21:08:42,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/949b133f3/942ef675a3004224920c5c45fce6d24f [2022-07-19 21:08:42,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:08:42,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:08:42,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:08:42,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:08:42,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:08:42,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:08:42" (1/1) ... [2022-07-19 21:08:42,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b72a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:42, skipping insertion in model container [2022-07-19 21:08:42,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:08:42" (1/1) ... [2022-07-19 21:08:42,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:08:42,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:08:42,950 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/mix040_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-19 21:08:43,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:08:43,191 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:08:43,205 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/mix040_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-07-19 21:08:43,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:08:43,334 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:08:43,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:43 WrapperNode [2022-07-19 21:08:43,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:08:43,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:08:43,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:08:43,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:08:43,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:43" (1/1) ... [2022-07-19 21:08:43,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:43" (1/1) ... [2022-07-19 21:08:43,434 INFO L137 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 193 [2022-07-19 21:08:43,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:08:43,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:08:43,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:08:43,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:08:43,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:43" (1/1) ... [2022-07-19 21:08:43,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:43" (1/1) ... [2022-07-19 21:08:43,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:43" (1/1) ... [2022-07-19 21:08:43,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:43" (1/1) ... [2022-07-19 21:08:43,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:43" (1/1) ... [2022-07-19 21:08:43,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:43" (1/1) ... [2022-07-19 21:08:43,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:43" (1/1) ... [2022-07-19 21:08:43,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:08:43,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:08:43,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:08:43,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:08:43,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:43" (1/1) ... [2022-07-19 21:08:43,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:08:43,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:08:43,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:08:43,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:08:43,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:08:43,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:08:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:08:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:08:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:08:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-19 21:08:43,549 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-19 21:08:43,549 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-19 21:08:43,550 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-19 21:08:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-19 21:08:43,550 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-19 21:08:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-19 21:08:43,550 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-19 21:08:43,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:08:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:08:43,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:08:43,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:08:43,552 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:08:43,714 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:08:43,715 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:08:44,225 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:08:44,558 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:08:44,559 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:08:44,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:08:44 BoogieIcfgContainer [2022-07-19 21:08:44,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:08:44,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:08:44,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:08:44,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:08:44,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:08:42" (1/3) ... [2022-07-19 21:08:44,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469f5d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:08:44, skipping insertion in model container [2022-07-19 21:08:44,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:08:43" (2/3) ... [2022-07-19 21:08:44,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469f5d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:08:44, skipping insertion in model container [2022-07-19 21:08:44,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:08:44" (3/3) ... [2022-07-19 21:08:44,577 INFO L111 eAbstractionObserver]: Analyzing ICFG mix040_power.oepc_pso.oepc_rmo.oepc.i [2022-07-19 21:08:44,581 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:08:44,589 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:08:44,590 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 21:08:44,590 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:08:44,657 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:08:44,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 150 places, 139 transitions, 298 flow [2022-07-19 21:08:44,759 INFO L129 PetriNetUnfolder]: 2/135 cut-off events. [2022-07-19 21:08:44,759 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:08:44,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 135 events. 2/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-07-19 21:08:44,762 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 139 transitions, 298 flow [2022-07-19 21:08:44,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 135 transitions, 282 flow [2022-07-19 21:08:44,782 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:08:44,788 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@3971b11e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@25e3d597 [2022-07-19 21:08:44,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-19 21:08:44,796 INFO L129 PetriNetUnfolder]: 0/51 cut-off events. [2022-07-19 21:08:44,796 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:08:44,797 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:44,797 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] [2022-07-19 21:08:44,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:08:44,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:44,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1951185825, now seen corresponding path program 1 times [2022-07-19 21:08:44,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:44,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966740898] [2022-07-19 21:08:44,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:44,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:45,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:45,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966740898] [2022-07-19 21:08:45,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966740898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:45,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:45,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:08:45,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870931644] [2022-07-19 21:08:45,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:45,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:08:45,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:45,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:08:45,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:08:45,162 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 139 [2022-07-19 21:08:45,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 135 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:45,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:45,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 139 [2022-07-19 21:08:45,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:45,419 INFO L129 PetriNetUnfolder]: 162/623 cut-off events. [2022-07-19 21:08:45,420 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-07-19 21:08:45,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 623 events. 162/623 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3456 event pairs, 132 based on Foata normal form. 46/627 useless extension candidates. Maximal degree in co-relation 871. Up to 191 conditions per place. [2022-07-19 21:08:45,430 INFO L132 encePairwiseOnDemand]: 134/139 looper letters, 18 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2022-07-19 21:08:45,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 139 transitions, 339 flow [2022-07-19 21:08:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:08:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:08:45,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2022-07-19 21:08:45,450 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9448441247002398 [2022-07-19 21:08:45,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2022-07-19 21:08:45,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2022-07-19 21:08:45,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:45,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2022-07-19 21:08:45,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:45,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:45,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:45,469 INFO L186 Difference]: Start difference. First operand has 146 places, 135 transitions, 282 flow. Second operand 3 states and 394 transitions. [2022-07-19 21:08:45,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 139 transitions, 339 flow [2022-07-19 21:08:45,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 139 transitions, 332 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:08:45,483 INFO L242 Difference]: Finished difference. Result has 142 places, 131 transitions, 274 flow [2022-07-19 21:08:45,485 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=142, PETRI_TRANSITIONS=131} [2022-07-19 21:08:45,491 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, -4 predicate places. [2022-07-19 21:08:45,492 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 131 transitions, 274 flow [2022-07-19 21:08:45,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:45,492 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:45,493 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:08:45,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:08:45,494 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:08:45,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:45,494 INFO L85 PathProgramCache]: Analyzing trace with hash 771760905, now seen corresponding path program 1 times [2022-07-19 21:08:45,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:45,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128258932] [2022-07-19 21:08:45,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:45,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:45,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:45,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128258932] [2022-07-19 21:08:45,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128258932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:45,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:45,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:08:45,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664201304] [2022-07-19 21:08:45,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:45,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:08:45,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:45,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:08:45,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:08:45,831 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-19 21:08:45,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 131 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:45,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:45,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-19 21:08:45,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:50,995 INFO L129 PetriNetUnfolder]: 14819/33024 cut-off events. [2022-07-19 21:08:50,996 INFO L130 PetriNetUnfolder]: For 1153/1153 co-relation queries the response was YES. [2022-07-19 21:08:51,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54690 conditions, 33024 events. 14819/33024 cut-off events. For 1153/1153 co-relation queries the response was YES. Maximal size of possible extension queue 1336. Compared 352881 event pairs, 2507 based on Foata normal form. 0/32157 useless extension candidates. Maximal degree in co-relation 54629. Up to 7247 conditions per place. [2022-07-19 21:08:51,263 INFO L132 encePairwiseOnDemand]: 125/139 looper letters, 48 selfloop transitions, 12 changer transitions 128/277 dead transitions. [2022-07-19 21:08:51,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 277 transitions, 948 flow [2022-07-19 21:08:51,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:08:51,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:08:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1556 transitions. [2022-07-19 21:08:51,267 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8610957387935805 [2022-07-19 21:08:51,267 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1556 transitions. [2022-07-19 21:08:51,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1556 transitions. [2022-07-19 21:08:51,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:51,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1556 transitions. [2022-07-19 21:08:51,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 119.6923076923077) internal successors, (1556), 13 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:51,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:51,279 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:51,279 INFO L186 Difference]: Start difference. First operand has 142 places, 131 transitions, 274 flow. Second operand 13 states and 1556 transitions. [2022-07-19 21:08:51,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 277 transitions, 948 flow [2022-07-19 21:08:51,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 277 transitions, 922 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:08:51,285 INFO L242 Difference]: Finished difference. Result has 164 places, 126 transitions, 374 flow [2022-07-19 21:08:51,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=374, PETRI_PLACES=164, PETRI_TRANSITIONS=126} [2022-07-19 21:08:51,286 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 18 predicate places. [2022-07-19 21:08:51,287 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 126 transitions, 374 flow [2022-07-19 21:08:51,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:51,288 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:51,288 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:08:51,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:08:51,288 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:08:51,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:51,289 INFO L85 PathProgramCache]: Analyzing trace with hash -562955512, now seen corresponding path program 1 times [2022-07-19 21:08:51,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:51,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47755454] [2022-07-19 21:08:51,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:51,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:51,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:51,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47755454] [2022-07-19 21:08:51,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47755454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:51,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:51,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:08:51,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211115464] [2022-07-19 21:08:51,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:51,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:08:51,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:51,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:08:51,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:08:51,469 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-19 21:08:51,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 126 transitions, 374 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:51,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:51,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-19 21:08:51,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:54,352 INFO L129 PetriNetUnfolder]: 10158/17470 cut-off events. [2022-07-19 21:08:54,353 INFO L130 PetriNetUnfolder]: For 30573/30645 co-relation queries the response was YES. [2022-07-19 21:08:54,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52538 conditions, 17470 events. 10158/17470 cut-off events. For 30573/30645 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 138716 event pairs, 1150 based on Foata normal form. 368/17635 useless extension candidates. Maximal degree in co-relation 52461. Up to 4924 conditions per place. [2022-07-19 21:08:54,564 INFO L132 encePairwiseOnDemand]: 127/139 looper letters, 54 selfloop transitions, 10 changer transitions 118/271 dead transitions. [2022-07-19 21:08:54,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 271 transitions, 1478 flow [2022-07-19 21:08:54,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:08:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:08:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1538 transitions. [2022-07-19 21:08:54,571 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8511344770337577 [2022-07-19 21:08:54,571 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1538 transitions. [2022-07-19 21:08:54,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1538 transitions. [2022-07-19 21:08:54,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:54,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1538 transitions. [2022-07-19 21:08:54,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.3076923076923) internal successors, (1538), 13 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:54,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:54,582 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:54,583 INFO L186 Difference]: Start difference. First operand has 164 places, 126 transitions, 374 flow. Second operand 13 states and 1538 transitions. [2022-07-19 21:08:54,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 271 transitions, 1478 flow [2022-07-19 21:08:54,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 271 transitions, 1454 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-07-19 21:08:54,726 INFO L242 Difference]: Finished difference. Result has 162 places, 132 transitions, 500 flow [2022-07-19 21:08:54,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=500, PETRI_PLACES=162, PETRI_TRANSITIONS=132} [2022-07-19 21:08:54,728 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 16 predicate places. [2022-07-19 21:08:54,728 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 132 transitions, 500 flow [2022-07-19 21:08:54,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:54,729 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:54,730 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:08:54,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:08:54,730 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:08:54,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:54,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1974763944, now seen corresponding path program 1 times [2022-07-19 21:08:54,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:54,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815009232] [2022-07-19 21:08:54,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:54,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:55,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:55,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:55,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815009232] [2022-07-19 21:08:55,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815009232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:55,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:55,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:08:55,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118122244] [2022-07-19 21:08:55,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:55,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:08:55,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:55,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:08:55,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:08:55,054 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-19 21:08:55,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 132 transitions, 500 flow. Second operand has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:55,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:55,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-19 21:08:55,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:08:57,424 INFO L129 PetriNetUnfolder]: 8555/14629 cut-off events. [2022-07-19 21:08:57,425 INFO L130 PetriNetUnfolder]: For 49830/49930 co-relation queries the response was YES. [2022-07-19 21:08:57,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51297 conditions, 14629 events. 8555/14629 cut-off events. For 49830/49930 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 111910 event pairs, 984 based on Foata normal form. 282/14716 useless extension candidates. Maximal degree in co-relation 51209. Up to 4791 conditions per place. [2022-07-19 21:08:57,562 INFO L132 encePairwiseOnDemand]: 124/139 looper letters, 54 selfloop transitions, 24 changer transitions 106/273 dead transitions. [2022-07-19 21:08:57,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 273 transitions, 1800 flow [2022-07-19 21:08:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:08:57,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:08:57,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1536 transitions. [2022-07-19 21:08:57,567 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8500276701715551 [2022-07-19 21:08:57,567 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1536 transitions. [2022-07-19 21:08:57,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1536 transitions. [2022-07-19 21:08:57,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:08:57,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1536 transitions. [2022-07-19 21:08:57,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.15384615384616) internal successors, (1536), 13 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:57,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:57,578 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:57,578 INFO L186 Difference]: Start difference. First operand has 162 places, 132 transitions, 500 flow. Second operand 13 states and 1536 transitions. [2022-07-19 21:08:57,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 273 transitions, 1800 flow [2022-07-19 21:08:57,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 273 transitions, 1723 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-07-19 21:08:57,777 INFO L242 Difference]: Finished difference. Result has 173 places, 146 transitions, 786 flow [2022-07-19 21:08:57,778 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=786, PETRI_PLACES=173, PETRI_TRANSITIONS=146} [2022-07-19 21:08:57,779 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 27 predicate places. [2022-07-19 21:08:57,779 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 146 transitions, 786 flow [2022-07-19 21:08:57,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:57,780 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:08:57,780 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:08:57,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:08:57,780 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:08:57,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:08:57,781 INFO L85 PathProgramCache]: Analyzing trace with hash -211338833, now seen corresponding path program 1 times [2022-07-19 21:08:57,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:08:57,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319672436] [2022-07-19 21:08:57,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:08:57,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:08:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:08:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:08:57,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:08:57,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319672436] [2022-07-19 21:08:57,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319672436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:08:57,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:08:57,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:08:57,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242958059] [2022-07-19 21:08:57,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:08:57,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:08:57,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:08:57,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:08:57,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:08:57,906 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-19 21:08:57,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 146 transitions, 786 flow. Second operand has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:08:57,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:08:57,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-19 21:08:57,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:00,707 INFO L129 PetriNetUnfolder]: 9343/17212 cut-off events. [2022-07-19 21:09:00,708 INFO L130 PetriNetUnfolder]: For 75260/76175 co-relation queries the response was YES. [2022-07-19 21:09:00,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61689 conditions, 17212 events. 9343/17212 cut-off events. For 75260/76175 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 145033 event pairs, 1600 based on Foata normal form. 300/16942 useless extension candidates. Maximal degree in co-relation 61585. Up to 4348 conditions per place. [2022-07-19 21:09:00,864 INFO L132 encePairwiseOnDemand]: 125/139 looper letters, 56 selfloop transitions, 33 changer transitions 92/270 dead transitions. [2022-07-19 21:09:00,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 270 transitions, 2061 flow [2022-07-19 21:09:00,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:09:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:09:00,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1524 transitions. [2022-07-19 21:09:00,868 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8433868289983398 [2022-07-19 21:09:00,868 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1524 transitions. [2022-07-19 21:09:00,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1524 transitions. [2022-07-19 21:09:00,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:00,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1524 transitions. [2022-07-19 21:09:00,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.23076923076923) internal successors, (1524), 13 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:00,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:00,877 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:00,877 INFO L186 Difference]: Start difference. First operand has 173 places, 146 transitions, 786 flow. Second operand 13 states and 1524 transitions. [2022-07-19 21:09:00,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 270 transitions, 2061 flow [2022-07-19 21:09:01,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 270 transitions, 1933 flow, removed 64 selfloop flow, removed 6 redundant places. [2022-07-19 21:09:01,188 INFO L242 Difference]: Finished difference. Result has 182 places, 152 transitions, 984 flow [2022-07-19 21:09:01,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=984, PETRI_PLACES=182, PETRI_TRANSITIONS=152} [2022-07-19 21:09:01,190 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 36 predicate places. [2022-07-19 21:09:01,190 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 152 transitions, 984 flow [2022-07-19 21:09:01,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:01,192 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:01,192 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:09:01,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:09:01,193 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:09:01,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:01,194 INFO L85 PathProgramCache]: Analyzing trace with hash 23438117, now seen corresponding path program 1 times [2022-07-19 21:09:01,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:01,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16202026] [2022-07-19 21:09:01,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:01,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:09:01,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:01,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16202026] [2022-07-19 21:09:01,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16202026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:01,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:01,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:09:01,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921214368] [2022-07-19 21:09:01,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:01,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:09:01,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:01,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:09:01,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:09:01,327 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-19 21:09:01,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 152 transitions, 984 flow. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:01,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:01,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-19 21:09:01,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:08,466 INFO L129 PetriNetUnfolder]: 28753/50495 cut-off events. [2022-07-19 21:09:08,467 INFO L130 PetriNetUnfolder]: For 124560/137787 co-relation queries the response was YES. [2022-07-19 21:09:08,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126319 conditions, 50495 events. 28753/50495 cut-off events. For 124560/137787 co-relation queries the response was YES. Maximal size of possible extension queue 2854. Compared 485146 event pairs, 1705 based on Foata normal form. 463/48728 useless extension candidates. Maximal degree in co-relation 126207. Up to 16092 conditions per place. [2022-07-19 21:09:09,110 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 109 selfloop transitions, 20 changer transitions 0/255 dead transitions. [2022-07-19 21:09:09,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 255 transitions, 1902 flow [2022-07-19 21:09:09,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:09:09,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:09:09,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1227 transitions. [2022-07-19 21:09:09,114 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8827338129496403 [2022-07-19 21:09:09,114 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1227 transitions. [2022-07-19 21:09:09,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1227 transitions. [2022-07-19 21:09:09,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:09,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1227 transitions. [2022-07-19 21:09:09,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:09,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:09,121 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:09,121 INFO L186 Difference]: Start difference. First operand has 182 places, 152 transitions, 984 flow. Second operand 10 states and 1227 transitions. [2022-07-19 21:09:09,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 255 transitions, 1902 flow [2022-07-19 21:09:09,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 255 transitions, 1820 flow, removed 41 selfloop flow, removed 12 redundant places. [2022-07-19 21:09:09,255 INFO L242 Difference]: Finished difference. Result has 176 places, 170 transitions, 1087 flow [2022-07-19 21:09:09,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1087, PETRI_PLACES=176, PETRI_TRANSITIONS=170} [2022-07-19 21:09:09,257 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 30 predicate places. [2022-07-19 21:09:09,257 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 170 transitions, 1087 flow [2022-07-19 21:09:09,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:09,257 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:09,258 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:09:09,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:09:09,258 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:09:09,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:09,258 INFO L85 PathProgramCache]: Analyzing trace with hash -306280705, now seen corresponding path program 1 times [2022-07-19 21:09:09,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:09,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694699889] [2022-07-19 21:09:09,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:09,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:09:09,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:09,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694699889] [2022-07-19 21:09:09,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694699889] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:09,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:09,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:09:09,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387010921] [2022-07-19 21:09:09,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:09,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:09:09,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:09,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:09:09,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:09:09,394 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 139 [2022-07-19 21:09:09,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 170 transitions, 1087 flow. Second operand has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:09,395 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:09,395 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 139 [2022-07-19 21:09:09,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:14,072 INFO L129 PetriNetUnfolder]: 11997/31853 cut-off events. [2022-07-19 21:09:14,072 INFO L130 PetriNetUnfolder]: For 110051/115630 co-relation queries the response was YES. [2022-07-19 21:09:14,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101006 conditions, 31853 events. 11997/31853 cut-off events. For 110051/115630 co-relation queries the response was YES. Maximal size of possible extension queue 2049. Compared 401160 event pairs, 3469 based on Foata normal form. 546/30334 useless extension candidates. Maximal degree in co-relation 100893. Up to 5959 conditions per place. [2022-07-19 21:09:14,622 INFO L132 encePairwiseOnDemand]: 125/139 looper letters, 128 selfloop transitions, 48 changer transitions 2/285 dead transitions. [2022-07-19 21:09:14,623 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 285 transitions, 2397 flow [2022-07-19 21:09:14,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:09:14,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:09:14,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1518 transitions. [2022-07-19 21:09:14,626 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8400664084117322 [2022-07-19 21:09:14,627 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1518 transitions. [2022-07-19 21:09:14,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1518 transitions. [2022-07-19 21:09:14,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:14,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1518 transitions. [2022-07-19 21:09:14,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.76923076923077) internal successors, (1518), 13 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:14,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:14,634 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:14,635 INFO L186 Difference]: Start difference. First operand has 176 places, 170 transitions, 1087 flow. Second operand 13 states and 1518 transitions. [2022-07-19 21:09:14,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 285 transitions, 2397 flow [2022-07-19 21:09:14,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 285 transitions, 2340 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:09:14,961 INFO L242 Difference]: Finished difference. Result has 198 places, 195 transitions, 1665 flow [2022-07-19 21:09:14,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1665, PETRI_PLACES=198, PETRI_TRANSITIONS=195} [2022-07-19 21:09:14,962 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 52 predicate places. [2022-07-19 21:09:14,962 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 195 transitions, 1665 flow [2022-07-19 21:09:14,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:14,962 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:14,963 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:09:14,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:09:14,963 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:09:14,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:14,963 INFO L85 PathProgramCache]: Analyzing trace with hash -553968997, now seen corresponding path program 1 times [2022-07-19 21:09:14,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:14,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15135447] [2022-07-19 21:09:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:14,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:09:15,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:15,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15135447] [2022-07-19 21:09:15,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15135447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:15,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:15,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:09:15,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280701345] [2022-07-19 21:09:15,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:15,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:09:15,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:15,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:09:15,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:09:15,077 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 139 [2022-07-19 21:09:15,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 195 transitions, 1665 flow. Second operand has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:15,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:15,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 139 [2022-07-19 21:09:15,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:09:26,548 INFO L129 PetriNetUnfolder]: 39534/71542 cut-off events. [2022-07-19 21:09:26,548 INFO L130 PetriNetUnfolder]: For 260061/275609 co-relation queries the response was YES. [2022-07-19 21:09:27,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237966 conditions, 71542 events. 39534/71542 cut-off events. For 260061/275609 co-relation queries the response was YES. Maximal size of possible extension queue 4339. Compared 752760 event pairs, 1651 based on Foata normal form. 1817/71689 useless extension candidates. Maximal degree in co-relation 237842. Up to 15427 conditions per place. [2022-07-19 21:09:27,801 INFO L132 encePairwiseOnDemand]: 128/139 looper letters, 138 selfloop transitions, 38 changer transitions 17/337 dead transitions. [2022-07-19 21:09:27,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 337 transitions, 3330 flow [2022-07-19 21:09:27,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:09:27,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:09:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1600 transitions. [2022-07-19 21:09:27,804 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8854454897620365 [2022-07-19 21:09:27,804 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1600 transitions. [2022-07-19 21:09:27,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1600 transitions. [2022-07-19 21:09:27,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:09:27,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1600 transitions. [2022-07-19 21:09:27,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 123.07692307692308) internal successors, (1600), 13 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:27,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:27,811 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:27,811 INFO L186 Difference]: Start difference. First operand has 198 places, 195 transitions, 1665 flow. Second operand 13 states and 1600 transitions. [2022-07-19 21:09:27,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 337 transitions, 3330 flow [2022-07-19 21:09:31,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 337 transitions, 3234 flow, removed 48 selfloop flow, removed 0 redundant places. [2022-07-19 21:09:31,416 INFO L242 Difference]: Finished difference. Result has 216 places, 208 transitions, 1731 flow [2022-07-19 21:09:31,417 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1731, PETRI_PLACES=216, PETRI_TRANSITIONS=208} [2022-07-19 21:09:31,417 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, 70 predicate places. [2022-07-19 21:09:31,417 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 208 transitions, 1731 flow [2022-07-19 21:09:31,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:09:31,418 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:09:31,419 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:09:31,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:09:31,419 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:09:31,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:09:31,420 INFO L85 PathProgramCache]: Analyzing trace with hash -425085834, now seen corresponding path program 1 times [2022-07-19 21:09:31,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:09:31,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651523202] [2022-07-19 21:09:31,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:09:31,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:09:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:09:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:09:31,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:09:31,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651523202] [2022-07-19 21:09:31,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651523202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:09:31,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:09:31,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:09:31,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301951619] [2022-07-19 21:09:31,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:09:31,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:09:31,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:09:31,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:09:31,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:09:31,566 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 139 [2022-07-19 21:09:31,566 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 208 transitions, 1731 flow. Second operand has 7 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 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) [2022-07-19 21:09:31,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:09:31,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 139 [2022-07-19 21:09:31,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand