/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 16:41:03,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 16:41:03,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 16:41:03,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 16:41:03,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 16:41:03,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 16:41:03,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 16:41:03,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 16:41:03,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 16:41:03,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 16:41:03,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 16:41:03,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 16:41:03,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 16:41:03,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 16:41:03,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 16:41:03,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 16:41:03,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 16:41:03,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 16:41:03,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 16:41:03,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 16:41:03,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 16:41:03,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 16:41:03,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 16:41:03,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 16:41:03,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 16:41:03,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 16:41:03,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 16:41:03,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 16:41:03,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 16:41:03,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 16:41:03,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 16:41:03,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 16:41:03,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 16:41:03,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 16:41:03,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 16:41:03,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 16:41:03,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 16:41:03,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 16:41:03,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 16:41:03,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 16:41:03,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 16:41:03,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-06 16:41:03,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 16:41:03,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 16:41:03,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 16:41:03,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 16:41:03,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 16:41:03,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 16:41:03,620 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 16:41:03,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 16:41:03,620 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 16:41:03,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 16:41:03,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 16:41:03,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 16:41:03,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 16:41:03,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 16:41:03,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 16:41:03,621 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 16:41:03,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 16:41:03,622 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 16:41:03,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 16:41:03,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 16:41:03,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 16:41:03,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 16:41:03,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 16:41:03,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:41:03,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 16:41:03,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 16:41:03,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 16:41:03,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 16:41:03,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 16:41:03,623 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 16:41:03,623 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 16:41:03,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 16:41:03,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 16:41:03,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 16:41:03,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 16:41:03,942 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 16:41:03,943 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 16:41:03,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2022-12-06 16:41:05,136 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 16:41:05,394 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 16:41:05,395 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2022-12-06 16:41:05,415 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c18171f6/e3149feb255e405895b908ebe7fb2ba9/FLAG3b5fc9adb [2022-12-06 16:41:05,429 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c18171f6/e3149feb255e405895b908ebe7fb2ba9 [2022-12-06 16:41:05,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 16:41:05,432 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 16:41:05,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 16:41:05,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 16:41:05,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 16:41:05,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:41:05" (1/1) ... [2022-12-06 16:41:05,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ae6bae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:05, skipping insertion in model container [2022-12-06 16:41:05,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:41:05" (1/1) ... [2022-12-06 16:41:05,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 16:41:05,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 16:41:05,593 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2022-12-06 16:41:05,700 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,703 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,703 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,705 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,705 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,705 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,705 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,705 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,706 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,706 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,706 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:41:05,724 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 16:41:05,735 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2022-12-06 16:41:05,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:41:05,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:41:05,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:41:05,807 INFO L208 MainTranslator]: Completed translation [2022-12-06 16:41:05,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:05 WrapperNode [2022-12-06 16:41:05,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 16:41:05,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 16:41:05,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 16:41:05,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 16:41:05,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:05" (1/1) ... [2022-12-06 16:41:05,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:05" (1/1) ... [2022-12-06 16:41:05,869 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-06 16:41:05,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 16:41:05,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 16:41:05,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 16:41:05,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 16:41:05,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:05" (1/1) ... [2022-12-06 16:41:05,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:05" (1/1) ... [2022-12-06 16:41:05,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:05" (1/1) ... [2022-12-06 16:41:05,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:05" (1/1) ... [2022-12-06 16:41:05,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:05" (1/1) ... [2022-12-06 16:41:05,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:05" (1/1) ... [2022-12-06 16:41:05,902 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:05" (1/1) ... [2022-12-06 16:41:05,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:05" (1/1) ... [2022-12-06 16:41:05,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 16:41:05,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 16:41:05,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 16:41:05,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 16:41:05,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:05" (1/1) ... [2022-12-06 16:41:05,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:41:05,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:41:05,953 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) [2022-12-06 16:41:05,976 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 [2022-12-06 16:41:05,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 16:41:05,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 16:41:05,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 16:41:05,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 16:41:05,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 16:41:05,990 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-06 16:41:05,990 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-06 16:41:05,990 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-06 16:41:05,991 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-06 16:41:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-06 16:41:05,991 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-06 16:41:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 16:41:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 16:41:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 16:41:05,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 16:41:05,992 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 16:41:06,187 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 16:41:06,189 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 16:41:06,395 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 16:41:06,400 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 16:41:06,400 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-06 16:41:06,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:41:06 BoogieIcfgContainer [2022-12-06 16:41:06,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 16:41:06,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 16:41:06,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 16:41:06,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 16:41:06,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 04:41:05" (1/3) ... [2022-12-06 16:41:06,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5c28f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:41:06, skipping insertion in model container [2022-12-06 16:41:06,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:41:05" (2/3) ... [2022-12-06 16:41:06,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5c28f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:41:06, skipping insertion in model container [2022-12-06 16:41:06,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:41:06" (3/3) ... [2022-12-06 16:41:06,411 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2022-12-06 16:41:06,428 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 16:41:06,429 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 16:41:06,429 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 16:41:06,505 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-06 16:41:06,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2022-12-06 16:41:06,599 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-12-06 16:41:06,600 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:41:06,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-12-06 16:41:06,604 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2022-12-06 16:41:06,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2022-12-06 16:41:06,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 16:41:06,631 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=false, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5f3a47e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 16:41:06,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-06 16:41:06,660 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2022-12-06 16:41:06,661 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:41:06,661 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:41:06,662 INFO L213 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] [2022-12-06 16:41:06,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 16:41:06,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:41:06,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1785307206, now seen corresponding path program 1 times [2022-12-06 16:41:06,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:41:06,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364888108] [2022-12-06 16:41:06,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:41:06,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:41:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:41:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:41:07,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:41:07,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364888108] [2022-12-06 16:41:07,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364888108] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:41:07,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:41:07,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:41:07,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122602414] [2022-12-06 16:41:07,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:41:07,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:41:07,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:41:07,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:41:07,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:41:07,470 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-06 16:41:07,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 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) [2022-12-06 16:41:07,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:41:07,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-06 16:41:07,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:41:07,810 INFO L130 PetriNetUnfolder]: 192/505 cut-off events. [2022-12-06 16:41:07,810 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-06 16:41:07,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 876 conditions, 505 events. 192/505 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2462 event pairs, 18 based on Foata normal form. 30/509 useless extension candidates. Maximal degree in co-relation 841. Up to 68 conditions per place. [2022-12-06 16:41:07,818 INFO L137 encePairwiseOnDemand]: 75/85 looper letters, 21 selfloop transitions, 5 changer transitions 42/119 dead transitions. [2022-12-06 16:41:07,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 119 transitions, 383 flow [2022-12-06 16:41:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-06 16:41:07,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-06 16:41:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 893 transitions. [2022-12-06 16:41:07,838 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8081447963800905 [2022-12-06 16:41:07,843 INFO L294 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2022-12-06 16:41:07,843 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 119 transitions, 383 flow [2022-12-06 16:41:07,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 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) [2022-12-06 16:41:07,844 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:41:07,845 INFO L213 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] [2022-12-06 16:41:07,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 16:41:07,845 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 16:41:07,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:41:07,846 INFO L85 PathProgramCache]: Analyzing trace with hash -589109222, now seen corresponding path program 1 times [2022-12-06 16:41:07,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:41:07,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534810207] [2022-12-06 16:41:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:41:07,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:41:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:41:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:41:08,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:41:08,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534810207] [2022-12-06 16:41:08,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534810207] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:41:08,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:41:08,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:41:08,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754962189] [2022-12-06 16:41:08,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:41:08,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:41:08,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:41:08,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:41:08,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:41:08,099 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-06 16:41:08,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 119 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 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) [2022-12-06 16:41:08,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:41:08,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-06 16:41:08,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:41:08,367 INFO L130 PetriNetUnfolder]: 596/1511 cut-off events. [2022-12-06 16:41:08,368 INFO L131 PetriNetUnfolder]: For 51/57 co-relation queries the response was YES. [2022-12-06 16:41:08,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2799 conditions, 1511 events. 596/1511 cut-off events. For 51/57 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 11407 event pairs, 29 based on Foata normal form. 0/1382 useless extension candidates. Maximal degree in co-relation 2760. Up to 295 conditions per place. [2022-12-06 16:41:08,378 INFO L137 encePairwiseOnDemand]: 75/85 looper letters, 25 selfloop transitions, 15 changer transitions 12/151 dead transitions. [2022-12-06 16:41:08,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 151 transitions, 549 flow [2022-12-06 16:41:08,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-06 16:41:08,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-06 16:41:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 728 transitions. [2022-12-06 16:41:08,380 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8564705882352941 [2022-12-06 16:41:08,381 INFO L294 CegarLoopForPetriNet]: 79 programPoint places, 21 predicate places. [2022-12-06 16:41:08,381 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 151 transitions, 549 flow [2022-12-06 16:41:08,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 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) [2022-12-06 16:41:08,382 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:41:08,382 INFO L213 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] [2022-12-06 16:41:08,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 16:41:08,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 16:41:08,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:41:08,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1533179983, now seen corresponding path program 1 times [2022-12-06 16:41:08,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:41:08,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320606371] [2022-12-06 16:41:08,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:41:08,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:41:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:41:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:41:08,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:41:08,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320606371] [2022-12-06 16:41:08,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320606371] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:41:08,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:41:08,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:41:08,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738566101] [2022-12-06 16:41:08,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:41:08,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:41:08,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:41:08,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:41:08,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:41:08,617 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-06 16:41:08,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 151 transitions, 549 flow. Second operand has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 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) [2022-12-06 16:41:08,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:41:08,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-06 16:41:08,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:41:08,871 INFO L130 PetriNetUnfolder]: 426/1181 cut-off events. [2022-12-06 16:41:08,871 INFO L131 PetriNetUnfolder]: For 204/530 co-relation queries the response was YES. [2022-12-06 16:41:08,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2899 conditions, 1181 events. 426/1181 cut-off events. For 204/530 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8936 event pairs, 24 based on Foata normal form. 75/1163 useless extension candidates. Maximal degree in co-relation 2856. Up to 280 conditions per place. [2022-12-06 16:41:08,879 INFO L137 encePairwiseOnDemand]: 75/85 looper letters, 26 selfloop transitions, 36 changer transitions 60/186 dead transitions. [2022-12-06 16:41:08,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 186 transitions, 880 flow [2022-12-06 16:41:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-06 16:41:08,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-06 16:41:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 947 transitions. [2022-12-06 16:41:08,882 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8570135746606334 [2022-12-06 16:41:08,883 INFO L294 CegarLoopForPetriNet]: 79 programPoint places, 33 predicate places. [2022-12-06 16:41:08,883 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 186 transitions, 880 flow [2022-12-06 16:41:08,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 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) [2022-12-06 16:41:08,883 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:41:08,884 INFO L213 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] [2022-12-06 16:41:08,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 16:41:08,884 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 16:41:08,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:41:08,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1085532324, now seen corresponding path program 1 times [2022-12-06 16:41:08,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:41:08,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151577527] [2022-12-06 16:41:08,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:41:08,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:41:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:41:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:41:09,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:41:09,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151577527] [2022-12-06 16:41:09,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151577527] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:41:09,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:41:09,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:41:09,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362493503] [2022-12-06 16:41:09,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:41:09,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:41:09,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:41:09,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:41:09,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:41:09,097 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 85 [2022-12-06 16:41:09,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 186 transitions, 880 flow. Second operand has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 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) [2022-12-06 16:41:09,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:41:09,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 85 [2022-12-06 16:41:09,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:41:09,430 INFO L130 PetriNetUnfolder]: 950/2663 cut-off events. [2022-12-06 16:41:09,430 INFO L131 PetriNetUnfolder]: For 439/693 co-relation queries the response was YES. [2022-12-06 16:41:09,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6814 conditions, 2663 events. 950/2663 cut-off events. For 439/693 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 25000 event pairs, 17 based on Foata normal form. 14/2500 useless extension candidates. Maximal degree in co-relation 6766. Up to 728 conditions per place. [2022-12-06 16:41:09,445 INFO L137 encePairwiseOnDemand]: 78/85 looper letters, 37 selfloop transitions, 4 changer transitions 89/241 dead transitions. [2022-12-06 16:41:09,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 241 transitions, 1327 flow [2022-12-06 16:41:09,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 16:41:09,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 16:41:09,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 499 transitions. [2022-12-06 16:41:09,447 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.838655462184874 [2022-12-06 16:41:09,449 INFO L294 CegarLoopForPetriNet]: 79 programPoint places, 39 predicate places. [2022-12-06 16:41:09,449 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 241 transitions, 1327 flow [2022-12-06 16:41:09,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 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) [2022-12-06 16:41:09,450 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:41:09,450 INFO L213 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] [2022-12-06 16:41:09,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 16:41:09,450 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 16:41:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:41:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1713660388, now seen corresponding path program 2 times [2022-12-06 16:41:09,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:41:09,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816860191] [2022-12-06 16:41:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:41:09,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:41:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:41:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:41:09,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:41:09,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816860191] [2022-12-06 16:41:09,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816860191] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:41:09,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:41:09,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:41:09,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998740061] [2022-12-06 16:41:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:41:09,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:41:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:41:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:41:09,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:41:09,636 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-06 16:41:09,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 241 transitions, 1327 flow. Second operand has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 7 states have internal predecessors, (458), 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) [2022-12-06 16:41:09,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:41:09,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-06 16:41:09,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:41:10,062 INFO L130 PetriNetUnfolder]: 1003/2779 cut-off events. [2022-12-06 16:41:10,062 INFO L131 PetriNetUnfolder]: For 765/1213 co-relation queries the response was YES. [2022-12-06 16:41:10,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7539 conditions, 2779 events. 1003/2779 cut-off events. For 765/1213 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 26414 event pairs, 8 based on Foata normal form. 36/2632 useless extension candidates. Maximal degree in co-relation 7484. Up to 773 conditions per place. [2022-12-06 16:41:10,076 INFO L137 encePairwiseOnDemand]: 75/85 looper letters, 32 selfloop transitions, 13 changer transitions 126/277 dead transitions. [2022-12-06 16:41:10,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 277 transitions, 1852 flow [2022-12-06 16:41:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-06 16:41:10,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-06 16:41:10,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 893 transitions. [2022-12-06 16:41:10,078 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8081447963800905 [2022-12-06 16:41:10,079 INFO L294 CegarLoopForPetriNet]: 79 programPoint places, 51 predicate places. [2022-12-06 16:41:10,079 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 277 transitions, 1852 flow [2022-12-06 16:41:10,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 7 states have internal predecessors, (458), 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) [2022-12-06 16:41:10,080 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:41:10,080 INFO L213 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] [2022-12-06 16:41:10,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 16:41:10,080 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 16:41:10,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:41:10,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1485014394, now seen corresponding path program 3 times [2022-12-06 16:41:10,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:41:10,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450163249] [2022-12-06 16:41:10,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:41:10,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:41:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:41:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:41:10,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:41:10,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450163249] [2022-12-06 16:41:10,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450163249] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:41:10,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:41:10,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-06 16:41:10,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830838834] [2022-12-06 16:41:10,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:41:10,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 16:41:10,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:41:10,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 16:41:10,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-06 16:41:10,230 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-06 16:41:10,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 277 transitions, 1852 flow. Second operand has 8 states, 8 states have (on average 69.5) internal successors, (556), 8 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) [2022-12-06 16:41:10,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:41:10,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-06 16:41:10,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:41:10,643 INFO L130 PetriNetUnfolder]: 915/2426 cut-off events. [2022-12-06 16:41:10,644 INFO L131 PetriNetUnfolder]: For 1295/3587 co-relation queries the response was YES. [2022-12-06 16:41:10,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8161 conditions, 2426 events. 915/2426 cut-off events. For 1295/3587 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 23062 event pairs, 4 based on Foata normal form. 348/2629 useless extension candidates. Maximal degree in co-relation 8102. Up to 722 conditions per place. [2022-12-06 16:41:10,655 INFO L137 encePairwiseOnDemand]: 75/85 looper letters, 23 selfloop transitions, 40 changer transitions 93/215 dead transitions. [2022-12-06 16:41:10,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 215 transitions, 1572 flow [2022-12-06 16:41:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-06 16:41:10,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-06 16:41:10,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1150 transitions. [2022-12-06 16:41:10,659 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8455882352941176 [2022-12-06 16:41:10,661 INFO L294 CegarLoopForPetriNet]: 79 programPoint places, 57 predicate places. [2022-12-06 16:41:10,662 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 215 transitions, 1572 flow [2022-12-06 16:41:10,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.5) internal successors, (556), 8 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) [2022-12-06 16:41:10,662 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:41:10,662 INFO L213 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] [2022-12-06 16:41:10,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 16:41:10,663 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 16:41:10,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:41:10,663 INFO L85 PathProgramCache]: Analyzing trace with hash -332667064, now seen corresponding path program 1 times [2022-12-06 16:41:10,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:41:10,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887432034] [2022-12-06 16:41:10,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:41:10,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:41:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:41:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:41:10,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:41:10,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887432034] [2022-12-06 16:41:10,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887432034] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:41:10,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:41:10,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:41:10,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065524191] [2022-12-06 16:41:10,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:41:10,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:41:10,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:41:10,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:41:10,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:41:10,834 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-06 16:41:10,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 215 transitions, 1572 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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) [2022-12-06 16:41:10,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:41:10,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-06 16:41:10,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:41:11,239 INFO L130 PetriNetUnfolder]: 1417/3863 cut-off events. [2022-12-06 16:41:11,240 INFO L131 PetriNetUnfolder]: For 2044/3205 co-relation queries the response was YES. [2022-12-06 16:41:11,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12904 conditions, 3863 events. 1417/3863 cut-off events. For 2044/3205 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 40239 event pairs, 3 based on Foata normal form. 18/3645 useless extension candidates. Maximal degree in co-relation 12840. Up to 1113 conditions per place. [2022-12-06 16:41:11,259 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 0 selfloop transitions, 0 changer transitions 238/238 dead transitions. [2022-12-06 16:41:11,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 238 transitions, 1966 flow [2022-12-06 16:41:11,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 16:41:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 16:41:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 496 transitions. [2022-12-06 16:41:11,261 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8336134453781513 [2022-12-06 16:41:11,262 INFO L294 CegarLoopForPetriNet]: 79 programPoint places, 61 predicate places. [2022-12-06 16:41:11,262 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 238 transitions, 1966 flow [2022-12-06 16:41:11,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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) [2022-12-06 16:41:11,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-06 16:41:11,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-06 16:41:11,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-06 16:41:11,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-06 16:41:11,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 16:41:11,266 INFO L458 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2022-12-06 16:41:11,269 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 16:41:11,269 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 16:41:11,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 04:41:11 BasicIcfg [2022-12-06 16:41:11,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 16:41:11,276 INFO L158 Benchmark]: Toolchain (without parser) took 5841.50ms. Allocated memory was 190.8MB in the beginning and 315.6MB in the end (delta: 124.8MB). Free memory was 165.5MB in the beginning and 202.2MB in the end (delta: -36.7MB). Peak memory consumption was 89.1MB. Max. memory is 8.0GB. [2022-12-06 16:41:11,280 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 190.8MB. Free memory was 167.5MB in the beginning and 167.4MB in the end (delta: 75.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 16:41:11,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.64ms. Allocated memory is still 190.8MB. Free memory was 165.5MB in the beginning and 141.3MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-12-06 16:41:11,281 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.41ms. Allocated memory is still 190.8MB. Free memory was 141.3MB in the beginning and 139.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 16:41:11,281 INFO L158 Benchmark]: Boogie Preprocessor took 35.71ms. Allocated memory is still 190.8MB. Free memory was 139.2MB in the beginning and 138.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 16:41:11,281 INFO L158 Benchmark]: RCFGBuilder took 496.39ms. Allocated memory is still 190.8MB. Free memory was 137.7MB in the beginning and 124.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-06 16:41:11,283 INFO L158 Benchmark]: TraceAbstraction took 4868.67ms. Allocated memory was 190.8MB in the beginning and 315.6MB in the end (delta: 124.8MB). Free memory was 123.5MB in the beginning and 202.2MB in the end (delta: -78.7MB). Peak memory consumption was 47.2MB. Max. memory is 8.0GB. [2022-12-06 16:41:11,286 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 190.8MB. Free memory was 167.5MB in the beginning and 167.4MB in the end (delta: 75.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 374.64ms. Allocated memory is still 190.8MB. Free memory was 165.5MB in the beginning and 141.3MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.41ms. Allocated memory is still 190.8MB. Free memory was 141.3MB in the beginning and 139.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.71ms. Allocated memory is still 190.8MB. Free memory was 139.2MB in the beginning and 138.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 496.39ms. Allocated memory is still 190.8MB. Free memory was 137.7MB in the beginning and 124.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4868.67ms. Allocated memory was 190.8MB in the beginning and 315.6MB in the end (delta: 124.8MB). Free memory was 123.5MB in the beginning and 202.2MB in the end (delta: -78.7MB). Peak memory consumption was 47.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 359 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 359 mSDsluCounter, 372 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 284 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 506 IncrementalHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 88 mSDtfsCounter, 506 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1966occurred in iteration=7, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 397 NumberOfCodeBlocks, 397 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 390 ConstructedInterpolants, 0 QuantifiedInterpolants, 1552 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-06 16:41:11,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...