/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 20:26:38,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 20:26:38,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 20:26:38,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 20:26:38,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 20:26:38,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 20:26:38,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 20:26:38,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 20:26:38,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 20:26:38,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 20:26:38,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 20:26:38,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 20:26:38,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 20:26:38,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 20:26:38,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 20:26:38,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 20:26:38,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 20:26:38,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 20:26:38,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 20:26:38,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 20:26:38,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 20:26:38,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 20:26:38,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 20:26:38,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 20:26:38,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 20:26:38,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 20:26:38,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 20:26:38,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 20:26:38,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 20:26:38,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 20:26:38,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 20:26:38,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 20:26:38,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 20:26:38,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 20:26:38,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 20:26:38,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 20:26:38,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 20:26:38,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 20:26:38,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 20:26:38,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 20:26:38,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 20:26:38,465 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-SemanticLbe.epf [2022-12-05 20:26:38,495 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 20:26:38,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 20:26:38,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 20:26:38,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 20:26:38,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 20:26:38,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 20:26:38,498 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 20:26:38,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 20:26:38,499 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 20:26:38,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 20:26:38,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 20:26:38,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 20:26:38,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 20:26:38,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 20:26:38,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 20:26:38,500 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 20:26:38,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 20:26:38,500 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 20:26:38,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 20:26:38,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 20:26:38,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 20:26:38,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 20:26:38,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 20:26:38,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:26:38,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 20:26:38,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 20:26:38,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 20:26:38,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 20:26:38,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 20:26:38,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 20:26:38,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 20:26:38,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 20:26:38,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 20:26:38,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 20:26:38,843 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 20:26:38,843 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 20:26:38,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 20:26:39,878 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 20:26:40,132 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 20:26:40,133 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 20:26:40,143 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63b71afe/51f85afec58d4e4e82a15e2ebabd5936/FLAGbd7984251 [2022-12-05 20:26:40,159 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63b71afe/51f85afec58d4e4e82a15e2ebabd5936 [2022-12-05 20:26:40,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 20:26:40,162 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 20:26:40,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 20:26:40,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 20:26:40,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 20:26:40,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:26:40" (1/1) ... [2022-12-05 20:26:40,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4493bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:40, skipping insertion in model container [2022-12-05 20:26:40,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:26:40" (1/1) ... [2022-12-05 20:26:40,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 20:26:40,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 20:26:40,325 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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-05 20:26:40,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,488 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,488 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,488 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,490 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,490 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,490 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:26:40,514 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 20:26:40,527 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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-05 20:26:40,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,567 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,567 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,567 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,567 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,569 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,576 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 20:26:40,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 20:26:40,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:26:40,626 INFO L208 MainTranslator]: Completed translation [2022-12-05 20:26:40,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:40 WrapperNode [2022-12-05 20:26:40,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 20:26:40,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 20:26:40,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 20:26:40,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 20:26:40,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:40" (1/1) ... [2022-12-05 20:26:40,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:40" (1/1) ... [2022-12-05 20:26:40,685 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-05 20:26:40,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 20:26:40,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 20:26:40,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 20:26:40,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 20:26:40,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:40" (1/1) ... [2022-12-05 20:26:40,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:40" (1/1) ... [2022-12-05 20:26:40,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:40" (1/1) ... [2022-12-05 20:26:40,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:40" (1/1) ... [2022-12-05 20:26:40,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:40" (1/1) ... [2022-12-05 20:26:40,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:40" (1/1) ... [2022-12-05 20:26:40,720 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:40" (1/1) ... [2022-12-05 20:26:40,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:40" (1/1) ... [2022-12-05 20:26:40,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 20:26:40,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 20:26:40,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 20:26:40,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 20:26:40,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:40" (1/1) ... [2022-12-05 20:26:40,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:26:40,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:26:40,764 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) [2022-12-05 20:26:40,790 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 [2022-12-05 20:26:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 20:26:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 20:26:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 20:26:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 20:26:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 20:26:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-05 20:26:40,808 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-05 20:26:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-05 20:26:40,808 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-05 20:26:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-05 20:26:40,808 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-05 20:26:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 20:26:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 20:26:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 20:26:40,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 20:26:40,810 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 20:26:40,988 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 20:26:40,990 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 20:26:41,122 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 20:26:41,128 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 20:26:41,128 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 20:26:41,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:26:41 BoogieIcfgContainer [2022-12-05 20:26:41,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 20:26:41,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 20:26:41,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 20:26:41,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 20:26:41,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:26:40" (1/3) ... [2022-12-05 20:26:41,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5d166d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:26:41, skipping insertion in model container [2022-12-05 20:26:41,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:26:40" (2/3) ... [2022-12-05 20:26:41,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5d166d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:26:41, skipping insertion in model container [2022-12-05 20:26:41,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:26:41" (3/3) ... [2022-12-05 20:26:41,137 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 20:26:41,153 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 20:26:41,154 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 20:26:41,154 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 20:26:41,238 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-05 20:26:41,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2022-12-05 20:26:41,350 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-12-05 20:26:41,350 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:26:41,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-12-05 20:26:41,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2022-12-05 20:26:41,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2022-12-05 20:26:41,362 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 20:26:41,385 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2022-12-05 20:26:41,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2022-12-05 20:26:41,421 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2022-12-05 20:26:41,422 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:26:41,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-05 20:26:41,425 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2022-12-05 20:26:41,425 INFO L188 LiptonReduction]: Number of co-enabled transitions 1044 [2022-12-05 20:26:43,865 INFO L203 LiptonReduction]: Total number of compositions: 53 [2022-12-05 20:26:43,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 20:26:43,896 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;@2b0ea92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 20:26:43,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 20:26:43,899 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-12-05 20:26:43,899 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:26:43,899 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:43,900 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:43,900 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)] === [2022-12-05 20:26:43,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:43,904 INFO L85 PathProgramCache]: Analyzing trace with hash 229073430, now seen corresponding path program 1 times [2022-12-05 20:26:43,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:43,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087342258] [2022-12-05 20:26:43,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:43,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:44,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:44,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087342258] [2022-12-05 20:26:44,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087342258] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:44,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:44,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 20:26:44,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5645327] [2022-12-05 20:26:44,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:44,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-05 20:26:44,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:44,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-05 20:26:44,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-05 20:26:44,077 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2022-12-05 20:26:44,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-12-05 20:26:44,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:44,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2022-12-05 20:26:44,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:44,146 INFO L130 PetriNetUnfolder]: 164/296 cut-off events. [2022-12-05 20:26:44,146 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-05 20:26:44,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 296 events. 164/296 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1225 event pairs, 164 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 586. Up to 271 conditions per place. [2022-12-05 20:26:44,150 INFO L137 encePairwiseOnDemand]: 17/18 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2022-12-05 20:26:44,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 71 flow [2022-12-05 20:26:44,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-05 20:26:44,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-05 20:26:44,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 21 transitions. [2022-12-05 20:26:44,159 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2022-12-05 20:26:44,160 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states and 21 transitions. [2022-12-05 20:26:44,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 71 flow [2022-12-05 20:26:44,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 68 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 20:26:44,163 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2022-12-05 20:26:44,165 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2022-12-05 20:26:44,167 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2022-12-05 20:26:44,168 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2022-12-05 20:26:44,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-12-05 20:26:44,168 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:44,168 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:44,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 20:26:44,169 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)] === [2022-12-05 20:26:44,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:44,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1488657983, now seen corresponding path program 1 times [2022-12-05 20:26:44,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:44,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745210493] [2022-12-05 20:26:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:44,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:44,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:44,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745210493] [2022-12-05 20:26:44,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745210493] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:44,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:44,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 20:26:44,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996495544] [2022-12-05 20:26:44,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:44,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:26:44,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:44,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:26:44,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:26:44,473 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 18 [2022-12-05 20:26:44,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-12-05 20:26:44,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:44,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 18 [2022-12-05 20:26:44,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:44,580 INFO L130 PetriNetUnfolder]: 418/718 cut-off events. [2022-12-05 20:26:44,581 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:26:44,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 718 events. 418/718 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3340 event pairs, 155 based on Foata normal form. 31/748 useless extension candidates. Maximal degree in co-relation 1456. Up to 416 conditions per place. [2022-12-05 20:26:44,587 INFO L137 encePairwiseOnDemand]: 11/18 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2022-12-05 20:26:44,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 30 transitions, 128 flow [2022-12-05 20:26:44,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:26:44,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:26:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2022-12-05 20:26:44,588 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2022-12-05 20:26:44,588 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 33 transitions. [2022-12-05 20:26:44,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 30 transitions, 128 flow [2022-12-05 20:26:44,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 20:26:44,596 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 86 flow [2022-12-05 20:26:44,596 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2022-12-05 20:26:44,597 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2022-12-05 20:26:44,597 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 86 flow [2022-12-05 20:26:44,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-12-05 20:26:44,597 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:44,597 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:44,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 20:26:44,598 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)] === [2022-12-05 20:26:44,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:44,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1096243217, now seen corresponding path program 1 times [2022-12-05 20:26:44,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:44,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320194927] [2022-12-05 20:26:44,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:44,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:44,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:44,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320194927] [2022-12-05 20:26:44,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320194927] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:44,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:44,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 20:26:44,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65791480] [2022-12-05 20:26:44,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:44,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 20:26:44,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:44,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 20:26:44,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 20:26:44,757 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2022-12-05 20:26:44,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-12-05 20:26:44,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:44,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2022-12-05 20:26:44,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:44,838 INFO L130 PetriNetUnfolder]: 328/584 cut-off events. [2022-12-05 20:26:44,839 INFO L131 PetriNetUnfolder]: For 208/211 co-relation queries the response was YES. [2022-12-05 20:26:44,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1486 conditions, 584 events. 328/584 cut-off events. For 208/211 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2798 event pairs, 99 based on Foata normal form. 11/575 useless extension candidates. Maximal degree in co-relation 1481. Up to 341 conditions per place. [2022-12-05 20:26:44,843 INFO L137 encePairwiseOnDemand]: 15/18 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2022-12-05 20:26:44,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 160 flow [2022-12-05 20:26:44,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 20:26:44,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 20:26:44,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 29 transitions. [2022-12-05 20:26:44,844 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2022-12-05 20:26:44,844 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 86 flow. Second operand 3 states and 29 transitions. [2022-12-05 20:26:44,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 160 flow [2022-12-05 20:26:44,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:26:44,847 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 85 flow [2022-12-05 20:26:44,847 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2022-12-05 20:26:44,848 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2022-12-05 20:26:44,848 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 85 flow [2022-12-05 20:26:44,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-12-05 20:26:44,848 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:44,849 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:44,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 20:26:44,849 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)] === [2022-12-05 20:26:44,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:44,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1096242411, now seen corresponding path program 1 times [2022-12-05 20:26:44,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:44,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124367909] [2022-12-05 20:26:44,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:44,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:44,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:44,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:44,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124367909] [2022-12-05 20:26:44,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124367909] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:44,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:44,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:26:44,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620706694] [2022-12-05 20:26:44,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:44,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:26:44,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:44,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:26:44,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:26:44,941 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 18 [2022-12-05 20:26:44,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-12-05 20:26:44,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:44,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 18 [2022-12-05 20:26:44,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:45,033 INFO L130 PetriNetUnfolder]: 361/624 cut-off events. [2022-12-05 20:26:45,034 INFO L131 PetriNetUnfolder]: For 220/220 co-relation queries the response was YES. [2022-12-05 20:26:45,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1662 conditions, 624 events. 361/624 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2884 event pairs, 85 based on Foata normal form. 8/624 useless extension candidates. Maximal degree in co-relation 1656. Up to 297 conditions per place. [2022-12-05 20:26:45,039 INFO L137 encePairwiseOnDemand]: 11/18 looper letters, 35 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2022-12-05 20:26:45,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 43 transitions, 237 flow [2022-12-05 20:26:45,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:26:45,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:26:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 43 transitions. [2022-12-05 20:26:45,041 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2022-12-05 20:26:45,041 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 85 flow. Second operand 4 states and 43 transitions. [2022-12-05 20:26:45,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 43 transitions, 237 flow [2022-12-05 20:26:45,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 43 transitions, 227 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 20:26:45,045 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 128 flow [2022-12-05 20:26:45,045 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2022-12-05 20:26:45,047 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2022-12-05 20:26:45,047 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 128 flow [2022-12-05 20:26:45,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-12-05 20:26:45,047 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:45,047 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:45,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 20:26:45,048 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)] === [2022-12-05 20:26:45,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:45,048 INFO L85 PathProgramCache]: Analyzing trace with hash -376199013, now seen corresponding path program 1 times [2022-12-05 20:26:45,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:45,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746967533] [2022-12-05 20:26:45,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:45,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:45,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:45,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746967533] [2022-12-05 20:26:45,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746967533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:45,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:45,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:26:45,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006521639] [2022-12-05 20:26:45,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:45,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:26:45,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:45,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:26:45,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:26:45,135 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 18 [2022-12-05 20:26:45,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-12-05 20:26:45,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:45,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 18 [2022-12-05 20:26:45,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:45,226 INFO L130 PetriNetUnfolder]: 417/736 cut-off events. [2022-12-05 20:26:45,226 INFO L131 PetriNetUnfolder]: For 805/805 co-relation queries the response was YES. [2022-12-05 20:26:45,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2213 conditions, 736 events. 417/736 cut-off events. For 805/805 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3573 event pairs, 104 based on Foata normal form. 20/754 useless extension candidates. Maximal degree in co-relation 2205. Up to 343 conditions per place. [2022-12-05 20:26:45,230 INFO L137 encePairwiseOnDemand]: 14/18 looper letters, 30 selfloop transitions, 6 changer transitions 7/44 dead transitions. [2022-12-05 20:26:45,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 307 flow [2022-12-05 20:26:45,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:26:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:26:45,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 37 transitions. [2022-12-05 20:26:45,231 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2022-12-05 20:26:45,231 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 128 flow. Second operand 4 states and 37 transitions. [2022-12-05 20:26:45,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 307 flow [2022-12-05 20:26:45,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 301 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:26:45,235 INFO L231 Difference]: Finished difference. Result has 38 places, 24 transitions, 143 flow [2022-12-05 20:26:45,235 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=38, PETRI_TRANSITIONS=24} [2022-12-05 20:26:45,235 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2022-12-05 20:26:45,236 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 24 transitions, 143 flow [2022-12-05 20:26:45,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-12-05 20:26:45,236 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:45,236 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:45,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 20:26:45,236 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)] === [2022-12-05 20:26:45,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:45,237 INFO L85 PathProgramCache]: Analyzing trace with hash 361822421, now seen corresponding path program 1 times [2022-12-05 20:26:45,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:45,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585486777] [2022-12-05 20:26:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:45,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:45,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:45,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585486777] [2022-12-05 20:26:45,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585486777] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:45,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:45,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:26:45,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078592108] [2022-12-05 20:26:45,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:45,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:26:45,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:45,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:26:45,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:26:45,342 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 18 [2022-12-05 20:26:45,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 24 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-12-05 20:26:45,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:45,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 18 [2022-12-05 20:26:45,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:45,427 INFO L130 PetriNetUnfolder]: 260/469 cut-off events. [2022-12-05 20:26:45,428 INFO L131 PetriNetUnfolder]: For 548/548 co-relation queries the response was YES. [2022-12-05 20:26:45,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1546 conditions, 469 events. 260/469 cut-off events. For 548/548 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2001 event pairs, 62 based on Foata normal form. 6/473 useless extension candidates. Maximal degree in co-relation 1535. Up to 228 conditions per place. [2022-12-05 20:26:45,431 INFO L137 encePairwiseOnDemand]: 11/18 looper letters, 32 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2022-12-05 20:26:45,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 299 flow [2022-12-05 20:26:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:26:45,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:26:45,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 40 transitions. [2022-12-05 20:26:45,433 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2022-12-05 20:26:45,433 INFO L175 Difference]: Start difference. First operand has 38 places, 24 transitions, 143 flow. Second operand 4 states and 40 transitions. [2022-12-05 20:26:45,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 299 flow [2022-12-05 20:26:45,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 265 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-05 20:26:45,437 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 183 flow [2022-12-05 20:26:45,437 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2022-12-05 20:26:45,439 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2022-12-05 20:26:45,440 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 183 flow [2022-12-05 20:26:45,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-12-05 20:26:45,445 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:45,445 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:45,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 20:26:45,445 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)] === [2022-12-05 20:26:45,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:45,446 INFO L85 PathProgramCache]: Analyzing trace with hash -749814489, now seen corresponding path program 1 times [2022-12-05 20:26:45,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:45,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344435436] [2022-12-05 20:26:45,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:45,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:45,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:45,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344435436] [2022-12-05 20:26:45,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344435436] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:45,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:45,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:26:45,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564470983] [2022-12-05 20:26:45,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:45,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:26:45,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:45,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:26:45,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:26:45,589 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 18 [2022-12-05 20:26:45,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 183 flow. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-12-05 20:26:45,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:45,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 18 [2022-12-05 20:26:45,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:45,674 INFO L130 PetriNetUnfolder]: 390/663 cut-off events. [2022-12-05 20:26:45,674 INFO L131 PetriNetUnfolder]: For 1404/1404 co-relation queries the response was YES. [2022-12-05 20:26:45,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2222 conditions, 663 events. 390/663 cut-off events. For 1404/1404 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2643 event pairs, 126 based on Foata normal form. 18/681 useless extension candidates. Maximal degree in co-relation 2211. Up to 299 conditions per place. [2022-12-05 20:26:45,677 INFO L137 encePairwiseOnDemand]: 12/18 looper letters, 26 selfloop transitions, 6 changer transitions 15/47 dead transitions. [2022-12-05 20:26:45,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 383 flow [2022-12-05 20:26:45,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:26:45,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:26:45,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 36 transitions. [2022-12-05 20:26:45,679 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4 [2022-12-05 20:26:45,679 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 183 flow. Second operand 5 states and 36 transitions. [2022-12-05 20:26:45,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 383 flow [2022-12-05 20:26:45,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 372 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-05 20:26:45,683 INFO L231 Difference]: Finished difference. Result has 44 places, 21 transitions, 139 flow [2022-12-05 20:26:45,683 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=44, PETRI_TRANSITIONS=21} [2022-12-05 20:26:45,683 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2022-12-05 20:26:45,683 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 21 transitions, 139 flow [2022-12-05 20:26:45,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-12-05 20:26:45,684 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:45,684 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:45,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 20:26:45,684 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)] === [2022-12-05 20:26:45,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:45,684 INFO L85 PathProgramCache]: Analyzing trace with hash 678889197, now seen corresponding path program 1 times [2022-12-05 20:26:45,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:45,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260739527] [2022-12-05 20:26:45,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:45,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:45,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:45,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260739527] [2022-12-05 20:26:45,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260739527] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:45,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:45,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:26:45,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654738041] [2022-12-05 20:26:45,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:45,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:26:45,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:45,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:26:45,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:26:45,768 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2022-12-05 20:26:45,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 21 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2022-12-05 20:26:45,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:45,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2022-12-05 20:26:45,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:45,852 INFO L130 PetriNetUnfolder]: 81/182 cut-off events. [2022-12-05 20:26:45,852 INFO L131 PetriNetUnfolder]: For 571/580 co-relation queries the response was YES. [2022-12-05 20:26:45,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 182 events. 81/182 cut-off events. For 571/580 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 748 event pairs, 24 based on Foata normal form. 13/192 useless extension candidates. Maximal degree in co-relation 578. Up to 110 conditions per place. [2022-12-05 20:26:45,854 INFO L137 encePairwiseOnDemand]: 12/18 looper letters, 22 selfloop transitions, 6 changer transitions 7/41 dead transitions. [2022-12-05 20:26:45,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 294 flow [2022-12-05 20:26:45,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:26:45,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:26:45,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2022-12-05 20:26:45,855 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2022-12-05 20:26:45,855 INFO L175 Difference]: Start difference. First operand has 44 places, 21 transitions, 139 flow. Second operand 5 states and 50 transitions. [2022-12-05 20:26:45,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 294 flow [2022-12-05 20:26:45,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 240 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-12-05 20:26:45,858 INFO L231 Difference]: Finished difference. Result has 41 places, 26 transitions, 149 flow [2022-12-05 20:26:45,858 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=41, PETRI_TRANSITIONS=26} [2022-12-05 20:26:45,858 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2022-12-05 20:26:45,859 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 26 transitions, 149 flow [2022-12-05 20:26:45,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2022-12-05 20:26:45,859 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:45,859 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:45,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 20:26:45,859 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)] === [2022-12-05 20:26:45,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:45,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2082528257, now seen corresponding path program 1 times [2022-12-05 20:26:45,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:45,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434076795] [2022-12-05 20:26:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:45,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:45,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:45,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434076795] [2022-12-05 20:26:45,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434076795] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:45,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:45,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:26:45,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429384590] [2022-12-05 20:26:45,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:45,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 20:26:45,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:45,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 20:26:45,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-05 20:26:45,951 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2022-12-05 20:26:45,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 26 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-12-05 20:26:45,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:45,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2022-12-05 20:26:45,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:46,024 INFO L130 PetriNetUnfolder]: 58/151 cut-off events. [2022-12-05 20:26:46,025 INFO L131 PetriNetUnfolder]: For 332/400 co-relation queries the response was YES. [2022-12-05 20:26:46,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 151 events. 58/151 cut-off events. For 332/400 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 634 event pairs, 5 based on Foata normal form. 34/181 useless extension candidates. Maximal degree in co-relation 566. Up to 80 conditions per place. [2022-12-05 20:26:46,026 INFO L137 encePairwiseOnDemand]: 12/18 looper letters, 23 selfloop transitions, 10 changer transitions 9/48 dead transitions. [2022-12-05 20:26:46,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 48 transitions, 342 flow [2022-12-05 20:26:46,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 20:26:46,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 20:26:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2022-12-05 20:26:46,027 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-05 20:26:46,027 INFO L175 Difference]: Start difference. First operand has 41 places, 26 transitions, 149 flow. Second operand 7 states and 63 transitions. [2022-12-05 20:26:46,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 48 transitions, 342 flow [2022-12-05 20:26:46,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 342 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 20:26:46,030 INFO L231 Difference]: Finished difference. Result has 50 places, 30 transitions, 216 flow [2022-12-05 20:26:46,030 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=50, PETRI_TRANSITIONS=30} [2022-12-05 20:26:46,030 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2022-12-05 20:26:46,030 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 30 transitions, 216 flow [2022-12-05 20:26:46,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-12-05 20:26:46,031 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:46,031 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:46,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 20:26:46,031 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)] === [2022-12-05 20:26:46,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:46,031 INFO L85 PathProgramCache]: Analyzing trace with hash -133893900, now seen corresponding path program 1 times [2022-12-05 20:26:46,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:46,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173718797] [2022-12-05 20:26:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:46,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:46,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:46,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173718797] [2022-12-05 20:26:46,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173718797] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:46,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:46,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 20:26:46,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456231006] [2022-12-05 20:26:46,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:46,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 20:26:46,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:46,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 20:26:46,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-05 20:26:46,121 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2022-12-05 20:26:46,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 30 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2022-12-05 20:26:46,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:46,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2022-12-05 20:26:46,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:46,200 INFO L130 PetriNetUnfolder]: 38/111 cut-off events. [2022-12-05 20:26:46,200 INFO L131 PetriNetUnfolder]: For 444/524 co-relation queries the response was YES. [2022-12-05 20:26:46,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 111 events. 38/111 cut-off events. For 444/524 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 415 event pairs, 2 based on Foata normal form. 44/153 useless extension candidates. Maximal degree in co-relation 508. Up to 55 conditions per place. [2022-12-05 20:26:46,201 INFO L137 encePairwiseOnDemand]: 12/18 looper letters, 11 selfloop transitions, 10 changer transitions 21/46 dead transitions. [2022-12-05 20:26:46,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 387 flow [2022-12-05 20:26:46,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 20:26:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 20:26:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 67 transitions. [2022-12-05 20:26:46,202 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.41358024691358025 [2022-12-05 20:26:46,202 INFO L175 Difference]: Start difference. First operand has 50 places, 30 transitions, 216 flow. Second operand 9 states and 67 transitions. [2022-12-05 20:26:46,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 387 flow [2022-12-05 20:26:46,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 359 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-12-05 20:26:46,205 INFO L231 Difference]: Finished difference. Result has 55 places, 24 transitions, 181 flow [2022-12-05 20:26:46,205 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=181, PETRI_PLACES=55, PETRI_TRANSITIONS=24} [2022-12-05 20:26:46,206 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2022-12-05 20:26:46,206 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 24 transitions, 181 flow [2022-12-05 20:26:46,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2022-12-05 20:26:46,206 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:26:46,206 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:46,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 20:26:46,207 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 20:26:46,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:26:46,207 INFO L85 PathProgramCache]: Analyzing trace with hash -737607947, now seen corresponding path program 1 times [2022-12-05 20:26:46,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:26:46,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065468724] [2022-12-05 20:26:46,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:26:46,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:26:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:26:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:26:46,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:26:46,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065468724] [2022-12-05 20:26:46,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065468724] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:26:46,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:26:46,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:26:46,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155397338] [2022-12-05 20:26:46,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:26:46,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:26:46,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:26:46,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:26:46,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:26:46,293 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 18 [2022-12-05 20:26:46,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 24 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-12-05 20:26:46,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:26:46,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 18 [2022-12-05 20:26:46,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:26:46,325 INFO L130 PetriNetUnfolder]: 17/50 cut-off events. [2022-12-05 20:26:46,325 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2022-12-05 20:26:46,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 50 events. 17/50 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 6 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 234. Up to 17 conditions per place. [2022-12-05 20:26:46,326 INFO L137 encePairwiseOnDemand]: 14/18 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2022-12-05 20:26:46,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 30 transitions, 270 flow [2022-12-05 20:26:46,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:26:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:26:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2022-12-05 20:26:46,327 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3 [2022-12-05 20:26:46,327 INFO L175 Difference]: Start difference. First operand has 55 places, 24 transitions, 181 flow. Second operand 5 states and 27 transitions. [2022-12-05 20:26:46,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 30 transitions, 270 flow [2022-12-05 20:26:46,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 30 transitions, 199 flow, removed 13 selfloop flow, removed 11 redundant places. [2022-12-05 20:26:46,329 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2022-12-05 20:26:46,329 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2022-12-05 20:26:46,329 INFO L294 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2022-12-05 20:26:46,329 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2022-12-05 20:26:46,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-12-05 20:26:46,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-05 20:26:46,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-05 20:26:46,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-05 20:26:46,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-05 20:26:46,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 20:26:46,333 INFO L458 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:26:46,335 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 20:26:46,335 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 20:26:46,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:26:46 BasicIcfg [2022-12-05 20:26:46,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 20:26:46,338 INFO L158 Benchmark]: Toolchain (without parser) took 6176.66ms. Allocated memory was 188.7MB in the beginning and 283.1MB in the end (delta: 94.4MB). Free memory was 164.3MB in the beginning and 131.0MB in the end (delta: 33.4MB). Peak memory consumption was 129.2MB. Max. memory is 8.0GB. [2022-12-05 20:26:46,338 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 188.7MB. Free memory is still 164.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:26:46,339 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.39ms. Allocated memory is still 188.7MB. Free memory was 164.2MB in the beginning and 141.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-05 20:26:46,339 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.30ms. Allocated memory is still 188.7MB. Free memory was 140.6MB in the beginning and 139.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 20:26:46,339 INFO L158 Benchmark]: Boogie Preprocessor took 34.98ms. Allocated memory is still 188.7MB. Free memory was 139.0MB in the beginning and 137.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:26:46,339 INFO L158 Benchmark]: RCFGBuilder took 407.61ms. Allocated memory is still 188.7MB. Free memory was 137.4MB in the beginning and 122.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-05 20:26:46,340 INFO L158 Benchmark]: TraceAbstraction took 5205.75ms. Allocated memory was 188.7MB in the beginning and 283.1MB in the end (delta: 94.4MB). Free memory was 122.2MB in the beginning and 131.0MB in the end (delta: -8.7MB). Peak memory consumption was 87.2MB. Max. memory is 8.0GB. [2022-12-05 20:26:46,341 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 188.7MB. Free memory is still 164.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 464.39ms. Allocated memory is still 188.7MB. Free memory was 164.2MB in the beginning and 141.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.30ms. Allocated memory is still 188.7MB. Free memory was 140.6MB in the beginning and 139.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.98ms. Allocated memory is still 188.7MB. Free memory was 139.0MB in the beginning and 137.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 407.61ms. Allocated memory is still 188.7MB. Free memory was 137.4MB in the beginning and 122.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 5205.75ms. Allocated memory was 188.7MB in the beginning and 283.1MB in the end (delta: 94.4MB). Free memory was 122.2MB in the beginning and 131.0MB in the end (delta: -8.7MB). Peak memory consumption was 87.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 32 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 761, independent: 722, independent conditional: 722, independent unconditional: 0, dependent: 39, dependent conditional: 39, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 761, independent: 722, independent conditional: 0, independent unconditional: 722, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 761, independent: 722, independent conditional: 0, independent unconditional: 722, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 761, independent: 722, independent conditional: 0, independent unconditional: 722, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 656, independent: 623, independent conditional: 0, independent unconditional: 623, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 656, independent: 611, independent conditional: 0, independent unconditional: 611, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 128, independent: 33, independent conditional: 0, independent unconditional: 33, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 761, independent: 99, independent conditional: 0, independent unconditional: 99, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 656, unknown conditional: 0, unknown unconditional: 656] , Statistics on independence cache: Total cache size (in pairs): 975, Positive cache size: 942, Positive conditional cache size: 0, Positive unconditional cache size: 942, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.0s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 168 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 442 IncrementalHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 12 mSDtfsCounter, 442 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=9, InterpolantAutomatonStates: 51, 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, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 468 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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! [2022-12-05 20:26:46,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...