/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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 16:38:09,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 16:38:09,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 16:38:09,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 16:38:09,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 16:38:09,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 16:38:09,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 16:38:09,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 16:38:09,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 16:38:09,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 16:38:09,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 16:38:09,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 16:38:09,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 16:38:09,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 16:38:09,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 16:38:09,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 16:38:09,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 16:38:09,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 16:38:09,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 16:38:09,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 16:38:09,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 16:38:09,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 16:38:09,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 16:38:09,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 16:38:09,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 16:38:09,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 16:38:09,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 16:38:09,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 16:38:09,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 16:38:09,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 16:38:09,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 16:38:09,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 16:38:09,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 16:38:09,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 16:38:09,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 16:38:09,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 16:38:09,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 16:38:09,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 16:38:09,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 16:38:09,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 16:38:09,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 16:38:09,739 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 16:38:09,768 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 16:38:09,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 16:38:09,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 16:38:09,769 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 16:38:09,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 16:38:09,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 16:38:09,769 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 16:38:09,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 16:38:09,770 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 16:38:09,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 16:38:09,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 16:38:09,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 16:38:09,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 16:38:09,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 16:38:09,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 16:38:09,770 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 16:38:09,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 16:38:09,771 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 16:38:09,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 16:38:09,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 16:38:09,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 16:38:09,772 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 16:38:09,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 16:38:09,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:38:09,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 16:38:09,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 16:38:09,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 16:38:09,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 16:38:09,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 16:38:09,774 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 16:38:09,774 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 16:38:09,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 16:38:10,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 16:38:10,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 16:38:10,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 16:38:10,080 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 16:38:10,081 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 16:38:10,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-06 16:38:10,953 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 16:38:11,227 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 16:38:11,227 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-06 16:38:11,240 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/873669b69/849574143fc04ca2bffe1f59c9f33df9/FLAG4901fec69 [2022-12-06 16:38:11,250 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/873669b69/849574143fc04ca2bffe1f59c9f33df9 [2022-12-06 16:38:11,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 16:38:11,253 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 16:38:11,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 16:38:11,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 16:38:11,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 16:38:11,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:38:11" (1/1) ... [2022-12-06 16:38:11,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@96b67a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:38:11, skipping insertion in model container [2022-12-06 16:38:11,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:38:11" (1/1) ... [2022-12-06 16:38:11,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 16:38:11,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 16:38:11,386 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-06 16:38:11,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:38:11,477 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 16:38:11,484 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-06 16:38:11,498 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:38:11,505 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:38:11,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:38:11,530 INFO L208 MainTranslator]: Completed translation [2022-12-06 16:38:11,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:38:11 WrapperNode [2022-12-06 16:38:11,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 16:38:11,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 16:38:11,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 16:38:11,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 16:38:11,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:38:11" (1/1) ... [2022-12-06 16:38:11,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:38:11" (1/1) ... [2022-12-06 16:38:11,574 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-06 16:38:11,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 16:38:11,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 16:38:11,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 16:38:11,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 16:38:11,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:38:11" (1/1) ... [2022-12-06 16:38:11,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:38:11" (1/1) ... [2022-12-06 16:38:11,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:38:11" (1/1) ... [2022-12-06 16:38:11,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:38:11" (1/1) ... [2022-12-06 16:38:11,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:38:11" (1/1) ... [2022-12-06 16:38:11,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:38:11" (1/1) ... [2022-12-06 16:38:11,599 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:38:11" (1/1) ... [2022-12-06 16:38:11,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:38:11" (1/1) ... [2022-12-06 16:38:11,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 16:38:11,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 16:38:11,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 16:38:11,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 16:38:11,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:38:11" (1/1) ... [2022-12-06 16:38:11,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:38:11,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:38:11,648 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 16:38:11,669 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 16:38:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 16:38:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 16:38:11,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 16:38:11,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 16:38:11,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 16:38:11,682 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-06 16:38:11,683 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-06 16:38:11,683 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-06 16:38:11,683 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-06 16:38:11,683 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-06 16:38:11,683 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-06 16:38:11,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 16:38:11,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 16:38:11,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 16:38:11,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 16:38:11,684 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 16:38:11,796 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 16:38:11,798 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 16:38:11,948 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 16:38:11,953 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 16:38:11,953 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-06 16:38:11,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:38:11 BoogieIcfgContainer [2022-12-06 16:38:11,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 16:38:11,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 16:38:11,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 16:38:11,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 16:38:11,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 04:38:11" (1/3) ... [2022-12-06 16:38:11,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516a546e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:38:11, skipping insertion in model container [2022-12-06 16:38:11,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:38:11" (2/3) ... [2022-12-06 16:38:11,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516a546e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:38:11, skipping insertion in model container [2022-12-06 16:38:11,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:38:11" (3/3) ... [2022-12-06 16:38:11,963 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-06 16:38:11,984 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 16:38:11,985 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 16:38:11,985 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 16:38:12,060 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-06 16:38:12,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2022-12-06 16:38:12,141 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2022-12-06 16:38:12,141 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:38:12,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-12-06 16:38:12,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2022-12-06 16:38:12,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2022-12-06 16:38:12,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 16:38:12,158 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;@22b452b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 16:38:12,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-06 16:38:12,178 INFO L130 PetriNetUnfolder]: 1/68 cut-off events. [2022-12-06 16:38:12,178 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:38:12,178 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:38:12,179 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 16:38:12,179 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 16:38:12,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:38:12,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1372371003, now seen corresponding path program 1 times [2022-12-06 16:38:12,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:38:12,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76864982] [2022-12-06 16:38:12,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:38:12,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:38:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:38:12,843 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 16:38:12,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:38:12,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76864982] [2022-12-06 16:38:12,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76864982] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:38:12,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:38:12,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:38:12,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497720005] [2022-12-06 16:38:12,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:38:12,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:38:12,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:38:12,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:38:12,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:38:12,891 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 84 [2022-12-06 16:38:12,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 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 16:38:12,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:38:12,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 84 [2022-12-06 16:38:12,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:38:13,069 INFO L130 PetriNetUnfolder]: 5/103 cut-off events. [2022-12-06 16:38:13,069 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-06 16:38:13,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 103 events. 5/103 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 4/106 useless extension candidates. Maximal degree in co-relation 112. Up to 11 conditions per place. [2022-12-06 16:38:13,071 INFO L137 encePairwiseOnDemand]: 77/84 looper letters, 11 selfloop transitions, 2 changer transitions 11/80 dead transitions. [2022-12-06 16:38:13,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 221 flow [2022-12-06 16:38:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 16:38:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 16:38:13,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 648 transitions. [2022-12-06 16:38:13,082 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-12-06 16:38:13,084 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2022-12-06 16:38:13,084 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 221 flow [2022-12-06 16:38:13,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 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 16:38:13,085 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:38:13,085 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] [2022-12-06 16:38:13,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 16:38:13,085 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 16:38:13,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:38:13,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1132813732, now seen corresponding path program 1 times [2022-12-06 16:38:13,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:38:13,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977737955] [2022-12-06 16:38:13,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:38:13,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:38:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:38:13,353 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 16:38:13,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:38:13,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977737955] [2022-12-06 16:38:13,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977737955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:38:13,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:38:13,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:38:13,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869893520] [2022-12-06 16:38:13,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:38:13,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:38:13,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:38:13,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:38:13,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:38:13,356 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 84 [2022-12-06 16:38:13,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 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 16:38:13,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:38:13,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 84 [2022-12-06 16:38:13,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:38:13,478 INFO L130 PetriNetUnfolder]: 18/177 cut-off events. [2022-12-06 16:38:13,478 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-12-06 16:38:13,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 177 events. 18/177 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 626 event pairs, 0 based on Foata normal form. 2/177 useless extension candidates. Maximal degree in co-relation 262. Up to 18 conditions per place. [2022-12-06 16:38:13,480 INFO L137 encePairwiseOnDemand]: 78/84 looper letters, 11 selfloop transitions, 2 changer transitions 33/103 dead transitions. [2022-12-06 16:38:13,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 103 transitions, 393 flow [2022-12-06 16:38:13,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 16:38:13,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 16:38:13,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 644 transitions. [2022-12-06 16:38:13,485 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8518518518518519 [2022-12-06 16:38:13,485 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 16 predicate places. [2022-12-06 16:38:13,486 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 103 transitions, 393 flow [2022-12-06 16:38:13,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 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 16:38:13,486 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:38:13,486 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] [2022-12-06 16:38:13,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 16:38:13,487 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 16:38:13,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:38:13,487 INFO L85 PathProgramCache]: Analyzing trace with hash 275144295, now seen corresponding path program 1 times [2022-12-06 16:38:13,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:38:13,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973783300] [2022-12-06 16:38:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:38:13,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:38:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:38:13,672 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 16:38:13,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:38:13,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973783300] [2022-12-06 16:38:13,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973783300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:38:13,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:38:13,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:38:13,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210560918] [2022-12-06 16:38:13,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:38:13,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:38:13,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:38:13,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:38:13,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:38:13,674 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 84 [2022-12-06 16:38:13,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 103 transitions, 393 flow. Second operand has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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 16:38:13,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:38:13,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 84 [2022-12-06 16:38:13,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:38:13,940 INFO L130 PetriNetUnfolder]: 220/745 cut-off events. [2022-12-06 16:38:13,940 INFO L131 PetriNetUnfolder]: For 296/427 co-relation queries the response was YES. [2022-12-06 16:38:13,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1649 conditions, 745 events. 220/745 cut-off events. For 296/427 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5151 event pairs, 13 based on Foata normal form. 21/755 useless extension candidates. Maximal degree in co-relation 1606. Up to 110 conditions per place. [2022-12-06 16:38:13,946 INFO L137 encePairwiseOnDemand]: 72/84 looper letters, 23 selfloop transitions, 12 changer transitions 138/224 dead transitions. [2022-12-06 16:38:13,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 224 transitions, 1325 flow [2022-12-06 16:38:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-06 16:38:13,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-06 16:38:13,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1169 transitions. [2022-12-06 16:38:13,951 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8186274509803921 [2022-12-06 16:38:13,952 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 32 predicate places. [2022-12-06 16:38:13,952 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 224 transitions, 1325 flow [2022-12-06 16:38:13,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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 16:38:13,952 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:38:13,952 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] [2022-12-06 16:38:13,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 16:38:13,953 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 16:38:13,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:38:13,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1720601113, now seen corresponding path program 2 times [2022-12-06 16:38:13,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:38:13,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763855887] [2022-12-06 16:38:13,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:38:13,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:38:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:38:14,157 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 16:38:14,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:38:14,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763855887] [2022-12-06 16:38:14,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763855887] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:38:14,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:38:14,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:38:14,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980066282] [2022-12-06 16:38:14,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:38:14,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:38:14,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:38:14,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:38:14,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:38:14,164 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 84 [2022-12-06 16:38:14,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 224 transitions, 1325 flow. Second operand has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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 16:38:14,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:38:14,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 84 [2022-12-06 16:38:14,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:38:14,520 INFO L130 PetriNetUnfolder]: 538/1652 cut-off events. [2022-12-06 16:38:14,522 INFO L131 PetriNetUnfolder]: For 1419/1664 co-relation queries the response was YES. [2022-12-06 16:38:14,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4224 conditions, 1652 events. 538/1652 cut-off events. For 1419/1664 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 14181 event pairs, 0 based on Foata normal form. 66/1714 useless extension candidates. Maximal degree in co-relation 4174. Up to 234 conditions per place. [2022-12-06 16:38:14,532 INFO L137 encePairwiseOnDemand]: 72/84 looper letters, 44 selfloop transitions, 17 changer transitions 438/551 dead transitions. [2022-12-06 16:38:14,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 551 transitions, 4432 flow [2022-12-06 16:38:14,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-06 16:38:14,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-06 16:38:14,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1159 transitions. [2022-12-06 16:38:14,538 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.811624649859944 [2022-12-06 16:38:14,539 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 48 predicate places. [2022-12-06 16:38:14,539 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 551 transitions, 4432 flow [2022-12-06 16:38:14,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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 16:38:14,539 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:38:14,540 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 16:38:14,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 16:38:14,540 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 16:38:14,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:38:14,541 INFO L85 PathProgramCache]: Analyzing trace with hash 137119451, now seen corresponding path program 1 times [2022-12-06 16:38:14,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:38:14,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156161119] [2022-12-06 16:38:14,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:38:14,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:38:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:38:14,690 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 16:38:14,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:38:14,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156161119] [2022-12-06 16:38:14,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156161119] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:38:14,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:38:14,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-06 16:38:14,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188984743] [2022-12-06 16:38:14,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:38:14,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 16:38:14,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:38:14,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 16:38:14,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-06 16:38:14,692 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 84 [2022-12-06 16:38:14,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 551 transitions, 4432 flow. Second operand has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 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 16:38:14,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:38:14,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 84 [2022-12-06 16:38:14,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:38:14,997 INFO L130 PetriNetUnfolder]: 575/1719 cut-off events. [2022-12-06 16:38:14,997 INFO L131 PetriNetUnfolder]: For 2382/6484 co-relation queries the response was YES. [2022-12-06 16:38:15,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5434 conditions, 1719 events. 575/1719 cut-off events. For 2382/6484 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 14914 event pairs, 0 based on Foata normal form. 70/1780 useless extension candidates. Maximal degree in co-relation 5377. Up to 275 conditions per place. [2022-12-06 16:38:15,006 INFO L137 encePairwiseOnDemand]: 74/84 looper letters, 31 selfloop transitions, 9 changer transitions 527/619 dead transitions. [2022-12-06 16:38:15,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 619 transitions, 6102 flow [2022-12-06 16:38:15,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-06 16:38:15,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-06 16:38:15,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 945 transitions. [2022-12-06 16:38:15,009 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8035714285714286 [2022-12-06 16:38:15,009 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 61 predicate places. [2022-12-06 16:38:15,009 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 619 transitions, 6102 flow [2022-12-06 16:38:15,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 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 16:38:15,010 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:38:15,010 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 16:38:15,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 16:38:15,010 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 16:38:15,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:38:15,011 INFO L85 PathProgramCache]: Analyzing trace with hash 896405924, now seen corresponding path program 1 times [2022-12-06 16:38:15,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:38:15,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499025118] [2022-12-06 16:38:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:38:15,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:38:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:38:15,112 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 16:38:15,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:38:15,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499025118] [2022-12-06 16:38:15,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499025118] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:38:15,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:38:15,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:38:15,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203384104] [2022-12-06 16:38:15,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:38:15,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:38:15,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:38:15,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:38:15,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:38:15,115 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 84 [2022-12-06 16:38:15,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 619 transitions, 6102 flow. Second operand has 7 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 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 16:38:15,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:38:15,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 84 [2022-12-06 16:38:15,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:38:15,409 INFO L130 PetriNetUnfolder]: 605/1749 cut-off events. [2022-12-06 16:38:15,410 INFO L131 PetriNetUnfolder]: For 3230/5198 co-relation queries the response was YES. [2022-12-06 16:38:15,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6483 conditions, 1749 events. 605/1749 cut-off events. For 3230/5198 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 14895 event pairs, 8 based on Foata normal form. 184/1925 useless extension candidates. Maximal degree in co-relation 6421. Up to 301 conditions per place. [2022-12-06 16:38:15,416 INFO L137 encePairwiseOnDemand]: 76/84 looper letters, 10 selfloop transitions, 4 changer transitions 585/654 dead transitions. [2022-12-06 16:38:15,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 654 transitions, 7310 flow [2022-12-06 16:38:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-06 16:38:15,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-06 16:38:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 907 transitions. [2022-12-06 16:38:15,418 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8305860805860806 [2022-12-06 16:38:15,421 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 73 predicate places. [2022-12-06 16:38:15,421 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 654 transitions, 7310 flow [2022-12-06 16:38:15,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 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 16:38:15,421 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:38:15,421 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] [2022-12-06 16:38:15,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 16:38:15,422 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 16:38:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:38:15,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1084053219, now seen corresponding path program 1 times [2022-12-06 16:38:15,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:38:15,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469998131] [2022-12-06 16:38:15,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:38:15,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:38:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:38:15,582 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 16:38:15,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:38:15,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469998131] [2022-12-06 16:38:15,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469998131] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:38:15,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:38:15,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:38:15,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066674830] [2022-12-06 16:38:15,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:38:15,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:38:15,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:38:15,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:38:15,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:38:15,587 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 84 [2022-12-06 16:38:15,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 654 transitions, 7310 flow. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 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 16:38:15,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:38:15,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 84 [2022-12-06 16:38:15,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:38:16,024 INFO L130 PetriNetUnfolder]: 1241/3238 cut-off events. [2022-12-06 16:38:16,025 INFO L131 PetriNetUnfolder]: For 3406/3989 co-relation queries the response was YES. [2022-12-06 16:38:16,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9995 conditions, 3238 events. 1241/3238 cut-off events. For 3406/3989 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 30107 event pairs, 40 based on Foata normal form. 44/3082 useless extension candidates. Maximal degree in co-relation 9929. Up to 695 conditions per place. [2022-12-06 16:38:16,037 INFO L137 encePairwiseOnDemand]: 74/84 looper letters, 18 selfloop transitions, 8 changer transitions 387/484 dead transitions. [2022-12-06 16:38:16,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 484 transitions, 5099 flow [2022-12-06 16:38:16,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-06 16:38:16,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-06 16:38:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 718 transitions. [2022-12-06 16:38:16,040 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8547619047619047 [2022-12-06 16:38:16,040 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 82 predicate places. [2022-12-06 16:38:16,040 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 484 transitions, 5099 flow [2022-12-06 16:38:16,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 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 16:38:16,042 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:38:16,042 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 16:38:16,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 16:38:16,044 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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 16:38:16,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:38:16,045 INFO L85 PathProgramCache]: Analyzing trace with hash -314383405, now seen corresponding path program 1 times [2022-12-06 16:38:16,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:38:16,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154178334] [2022-12-06 16:38:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:38:16,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:38:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:38:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:38:16,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:38:16,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154178334] [2022-12-06 16:38:16,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154178334] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:38:16,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:38:16,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:38:16,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040685426] [2022-12-06 16:38:16,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:38:16,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:38:16,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:38:16,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:38:16,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:38:16,173 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 84 [2022-12-06 16:38:16,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 484 transitions, 5099 flow. Second operand has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 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 16:38:16,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:38:16,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 84 [2022-12-06 16:38:16,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:38:16,487 INFO L130 PetriNetUnfolder]: 860/2372 cut-off events. [2022-12-06 16:38:16,487 INFO L131 PetriNetUnfolder]: For 1907/2707 co-relation queries the response was YES. [2022-12-06 16:38:16,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7077 conditions, 2372 events. 860/2372 cut-off events. For 1907/2707 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 22030 event pairs, 6 based on Foata normal form. 153/2390 useless extension candidates. Maximal degree in co-relation 7007. Up to 646 conditions per place. [2022-12-06 16:38:16,498 INFO L137 encePairwiseOnDemand]: 74/84 looper letters, 18 selfloop transitions, 11 changer transitions 215/298 dead transitions. [2022-12-06 16:38:16,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 298 transitions, 2762 flow [2022-12-06 16:38:16,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-06 16:38:16,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-06 16:38:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 934 transitions. [2022-12-06 16:38:16,500 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8553113553113553 [2022-12-06 16:38:16,502 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 85 predicate places. [2022-12-06 16:38:16,502 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 298 transitions, 2762 flow [2022-12-06 16:38:16,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 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 16:38:16,503 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:38:16,503 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] [2022-12-06 16:38:16,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-06 16:38:16,503 INFO L420 AbstractCegarLoop]: === Iteration 9 === 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 16:38:16,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:38:16,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1188158419, now seen corresponding path program 1 times [2022-12-06 16:38:16,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:38:16,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107285229] [2022-12-06 16:38:16,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:38:16,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:38:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:38:16,648 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 16:38:16,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:38:16,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107285229] [2022-12-06 16:38:16,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107285229] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:38:16,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:38:16,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-06 16:38:16,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925359426] [2022-12-06 16:38:16,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:38:16,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 16:38:16,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:38:16,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 16:38:16,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-06 16:38:16,650 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 84 [2022-12-06 16:38:16,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 298 transitions, 2762 flow. Second operand has 8 states, 8 states have (on average 68.5) internal successors, (548), 8 states have internal predecessors, (548), 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 16:38:16,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:38:16,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 84 [2022-12-06 16:38:16,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:38:16,940 INFO L130 PetriNetUnfolder]: 778/2076 cut-off events. [2022-12-06 16:38:16,940 INFO L131 PetriNetUnfolder]: For 1843/3184 co-relation queries the response was YES. [2022-12-06 16:38:16,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7068 conditions, 2076 events. 778/2076 cut-off events. For 1843/3184 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 19317 event pairs, 0 based on Foata normal form. 210/2145 useless extension candidates. Maximal degree in co-relation 6994. Up to 618 conditions per place. [2022-12-06 16:38:16,948 INFO L137 encePairwiseOnDemand]: 74/84 looper letters, 9 selfloop transitions, 12 changer transitions 148/223 dead transitions. [2022-12-06 16:38:16,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 223 transitions, 1966 flow [2022-12-06 16:38:16,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-06 16:38:16,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-06 16:38:16,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1134 transitions. [2022-12-06 16:38:16,952 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.84375 [2022-12-06 16:38:16,953 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 64 predicate places. [2022-12-06 16:38:16,953 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 223 transitions, 1966 flow [2022-12-06 16:38:16,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.5) internal successors, (548), 8 states have internal predecessors, (548), 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 16:38:16,953 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:38:16,954 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] [2022-12-06 16:38:16,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-06 16:38:16,954 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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 16:38:16,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:38:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1835363804, now seen corresponding path program 1 times [2022-12-06 16:38:16,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:38:16,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13898615] [2022-12-06 16:38:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:38:16,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:38:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:38:17,061 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 16:38:17,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:38:17,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13898615] [2022-12-06 16:38:17,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13898615] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:38:17,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:38:17,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 16:38:17,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810162215] [2022-12-06 16:38:17,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:38:17,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:38:17,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:38:17,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:38:17,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-06 16:38:17,064 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 84 [2022-12-06 16:38:17,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 223 transitions, 1966 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 16:38:17,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:38:17,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 84 [2022-12-06 16:38:17,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:38:17,323 INFO L130 PetriNetUnfolder]: 1051/2743 cut-off events. [2022-12-06 16:38:17,323 INFO L131 PetriNetUnfolder]: For 2531/3312 co-relation queries the response was YES. [2022-12-06 16:38:17,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9463 conditions, 2743 events. 1051/2743 cut-off events. For 2531/3312 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 26662 event pairs, 0 based on Foata normal form. 22/2595 useless extension candidates. Maximal degree in co-relation 9384. Up to 833 conditions per place. [2022-12-06 16:38:17,336 INFO L137 encePairwiseOnDemand]: 78/84 looper letters, 0 selfloop transitions, 0 changer transitions 237/237 dead transitions. [2022-12-06 16:38:17,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 237 transitions, 2351 flow [2022-12-06 16:38:17,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 16:38:17,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 16:38:17,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 485 transitions. [2022-12-06 16:38:17,337 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8248299319727891 [2022-12-06 16:38:17,337 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 68 predicate places. [2022-12-06 16:38:17,338 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 237 transitions, 2351 flow [2022-12-06 16:38:17,338 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 16:38:17,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-06 16:38:17,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-06 16:38:17,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-06 16:38:17,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-06 16:38:17,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-06 16:38:17,342 INFO L458 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:38:17,344 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 16:38:17,344 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 16:38:17,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 04:38:17 BasicIcfg [2022-12-06 16:38:17,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 16:38:17,348 INFO L158 Benchmark]: Toolchain (without parser) took 6095.44ms. Allocated memory was 207.6MB in the beginning and 413.1MB in the end (delta: 205.5MB). Free memory was 182.3MB in the beginning and 275.6MB in the end (delta: -93.3MB). Peak memory consumption was 113.0MB. Max. memory is 8.0GB. [2022-12-06 16:38:17,348 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 207.6MB. Free memory is still 184.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 16:38:17,349 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.60ms. Allocated memory is still 207.6MB. Free memory was 182.3MB in the beginning and 158.4MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-06 16:38:17,349 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.39ms. Allocated memory is still 207.6MB. Free memory was 158.4MB in the beginning and 156.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 16:38:17,349 INFO L158 Benchmark]: Boogie Preprocessor took 26.47ms. Allocated memory is still 207.6MB. Free memory was 156.7MB in the beginning and 155.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 16:38:17,349 INFO L158 Benchmark]: RCFGBuilder took 354.61ms. Allocated memory is still 207.6MB. Free memory was 155.3MB in the beginning and 141.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-06 16:38:17,349 INFO L158 Benchmark]: TraceAbstraction took 5390.49ms. Allocated memory was 207.6MB in the beginning and 413.1MB in the end (delta: 205.5MB). Free memory was 141.1MB in the beginning and 275.6MB in the end (delta: -134.4MB). Peak memory consumption was 72.1MB. Max. memory is 8.0GB. [2022-12-06 16:38:17,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 207.6MB. Free memory is still 184.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 278.60ms. Allocated memory is still 207.6MB. Free memory was 182.3MB in the beginning and 158.4MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.39ms. Allocated memory is still 207.6MB. Free memory was 158.4MB in the beginning and 156.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.47ms. Allocated memory is still 207.6MB. Free memory was 156.7MB in the beginning and 155.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 354.61ms. Allocated memory is still 207.6MB. Free memory was 155.3MB in the beginning and 141.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 5390.49ms. Allocated memory was 207.6MB in the beginning and 413.1MB in the end (delta: 205.5MB). Free memory was 141.1MB in the beginning and 275.6MB in the end (delta: -134.4MB). Peak memory consumption was 72.1MB. 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, 106 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: 5.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 515 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 515 mSDsluCounter, 457 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 353 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 664 IncrementalHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 104 mSDtfsCounter, 664 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7310occurred in iteration=6, InterpolantAutomatonStates: 125, 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, 1.7s InterpolantComputationTime, 556 NumberOfCodeBlocks, 556 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 546 ConstructedInterpolants, 0 QuantifiedInterpolants, 1634 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 16:38:17,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...