/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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 14:40:57,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 14:40:57,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 14:40:57,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 14:40:57,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 14:40:57,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 14:40:57,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 14:40:57,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 14:40:57,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 14:40:57,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 14:40:57,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 14:40:57,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 14:40:57,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 14:40:57,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 14:40:57,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 14:40:57,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 14:40:57,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 14:40:57,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 14:40:57,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 14:40:57,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 14:40:57,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 14:40:57,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 14:40:57,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 14:40:57,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 14:40:57,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 14:40:57,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 14:40:57,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 14:40:57,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 14:40:57,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 14:40:57,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 14:40:57,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 14:40:57,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 14:40:57,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 14:40:57,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 14:40:57,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 14:40:57,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 14:40:57,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 14:40:57,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 14:40:57,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 14:40:57,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 14:40:57,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 14:40:57,622 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 [2022-12-12 14:40:57,647 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 14:40:57,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 14:40:57,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 14:40:57,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 14:40:57,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 14:40:57,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 14:40:57,649 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 14:40:57,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 14:40:57,649 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 14:40:57,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 14:40:57,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 14:40:57,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 14:40:57,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 14:40:57,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 14:40:57,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 14:40:57,651 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 14:40:57,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 14:40:57,651 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 14:40:57,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 14:40:57,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 14:40:57,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 14:40:57,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 14:40:57,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 14:40:57,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:40:57,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 14:40:57,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 14:40:57,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 14:40:57,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 14:40:57,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 14:40:57,652 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 14:40:57,652 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 14:40:57,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 14:40:57,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 14:40:57,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 14:40:57,925 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 14:40:57,925 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 14:40:57,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 14:40:58,910 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 14:40:59,143 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 14:40:59,144 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 14:40:59,153 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ea0e200/3646b498f5d44fe296f102dd4d2c4182/FLAGdbfa91e67 [2022-12-12 14:40:59,164 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ea0e200/3646b498f5d44fe296f102dd4d2c4182 [2022-12-12 14:40:59,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 14:40:59,167 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 14:40:59,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 14:40:59,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 14:40:59,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 14:40:59,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:40:59" (1/1) ... [2022-12-12 14:40:59,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ddce235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:59, skipping insertion in model container [2022-12-12 14:40:59,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:40:59" (1/1) ... [2022-12-12 14:40:59,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 14:40:59,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 14:40:59,300 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-12 14:40:59,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:40:59,477 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 14:40:59,489 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-12 14:40:59,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:40:59,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:40:59,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:40:59,555 INFO L208 MainTranslator]: Completed translation [2022-12-12 14:40:59,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:59 WrapperNode [2022-12-12 14:40:59,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 14:40:59,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 14:40:59,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 14:40:59,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 14:40:59,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:59" (1/1) ... [2022-12-12 14:40:59,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:59" (1/1) ... [2022-12-12 14:40:59,612 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-12-12 14:40:59,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 14:40:59,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 14:40:59,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 14:40:59,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 14:40:59,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:59" (1/1) ... [2022-12-12 14:40:59,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:59" (1/1) ... [2022-12-12 14:40:59,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:59" (1/1) ... [2022-12-12 14:40:59,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:59" (1/1) ... [2022-12-12 14:40:59,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:59" (1/1) ... [2022-12-12 14:40:59,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:59" (1/1) ... [2022-12-12 14:40:59,634 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:59" (1/1) ... [2022-12-12 14:40:59,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:59" (1/1) ... [2022-12-12 14:40:59,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 14:40:59,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 14:40:59,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 14:40:59,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 14:40:59,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:59" (1/1) ... [2022-12-12 14:40:59,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:40:59,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:40:59,679 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) [2022-12-12 14:40:59,685 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 [2022-12-12 14:40:59,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 14:40:59,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 14:40:59,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 14:40:59,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 14:40:59,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 14:40:59,713 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 14:40:59,713 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 14:40:59,713 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 14:40:59,713 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 14:40:59,714 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 14:40:59,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 14:40:59,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 14:40:59,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 14:40:59,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 14:40:59,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 14:40:59,715 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 14:40:59,793 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 14:40:59,795 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 14:40:59,906 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 14:40:59,911 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 14:40:59,911 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 14:40:59,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:40:59 BoogieIcfgContainer [2022-12-12 14:40:59,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 14:40:59,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 14:40:59,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 14:40:59,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 14:40:59,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 02:40:59" (1/3) ... [2022-12-12 14:40:59,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f567436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:40:59, skipping insertion in model container [2022-12-12 14:40:59,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:40:59" (2/3) ... [2022-12-12 14:40:59,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f567436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:40:59, skipping insertion in model container [2022-12-12 14:40:59,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:40:59" (3/3) ... [2022-12-12 14:40:59,918 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 14:40:59,931 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 14:40:59,931 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 14:40:59,931 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 14:40:59,980 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 14:41:00,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2022-12-12 14:41:00,037 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2022-12-12 14:41:00,038 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:41:00,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-12-12 14:41:00,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2022-12-12 14:41:00,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2022-12-12 14:41:00,046 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 14:41:00,062 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2022-12-12 14:41:00,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2022-12-12 14:41:00,080 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2022-12-12 14:41:00,080 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:41:00,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 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. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-12 14:41:00,082 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2022-12-12 14:41:00,082 INFO L226 LiptonReduction]: Number of co-enabled transitions 1044 [2022-12-12 14:41:01,743 INFO L241 LiptonReduction]: Total number of compositions: 52 [2022-12-12 14:41:01,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 14:41:01,766 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;@517cd4a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 14:41:01,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 14:41:01,775 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-12-12 14:41:01,775 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:41:01,776 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:01,777 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:01,778 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)] === [2022-12-12 14:41:01,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:01,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1753090777, now seen corresponding path program 1 times [2022-12-12 14:41:01,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:01,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962173721] [2022-12-12 14:41:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:01,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:02,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:02,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962173721] [2022-12-12 14:41:02,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962173721] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:02,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:02,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 14:41:02,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39722485] [2022-12-12 14:41:02,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:02,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 14:41:02,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:02,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 14:41:02,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 14:41:02,200 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 14:41:02,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-12-12 14:41:02,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:02,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 14:41:02,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:02,420 INFO L130 PetriNetUnfolder]: 1237/2076 cut-off events. [2022-12-12 14:41:02,420 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-12-12 14:41:02,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4088 conditions, 2076 events. 1237/2076 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 11576 event pairs, 510 based on Foata normal form. 110/1762 useless extension candidates. Maximal degree in co-relation 4077. Up to 986 conditions per place. [2022-12-12 14:41:02,437 INFO L137 encePairwiseOnDemand]: 18/27 looper letters, 30 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2022-12-12 14:41:02,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 175 flow [2022-12-12 14:41:02,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 14:41:02,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 14:41:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2022-12-12 14:41:02,446 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7160493827160493 [2022-12-12 14:41:02,447 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 63 flow. Second operand 3 states and 58 transitions. [2022-12-12 14:41:02,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 175 flow [2022-12-12 14:41:02,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-12 14:41:02,454 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 112 flow [2022-12-12 14:41:02,456 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2022-12-12 14:41:02,460 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2022-12-12 14:41:02,460 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 112 flow [2022-12-12 14:41:02,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-12-12 14:41:02,461 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:02,461 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:02,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 14:41:02,461 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)] === [2022-12-12 14:41:02,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:02,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1488760456, now seen corresponding path program 1 times [2022-12-12 14:41:02,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:02,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966561482] [2022-12-12 14:41:02,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:02,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:02,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:02,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966561482] [2022-12-12 14:41:02,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966561482] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:02,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:02,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:41:02,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169933613] [2022-12-12 14:41:02,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:02,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:41:02,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:02,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:41:02,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:41:02,634 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 14:41:02,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2022-12-12 14:41:02,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:02,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 14:41:02,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:02,806 INFO L130 PetriNetUnfolder]: 1174/1986 cut-off events. [2022-12-12 14:41:02,806 INFO L131 PetriNetUnfolder]: For 639/639 co-relation queries the response was YES. [2022-12-12 14:41:02,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4978 conditions, 1986 events. 1174/1986 cut-off events. For 639/639 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11023 event pairs, 129 based on Foata normal form. 9/1583 useless extension candidates. Maximal degree in co-relation 4966. Up to 869 conditions per place. [2022-12-12 14:41:02,816 INFO L137 encePairwiseOnDemand]: 19/27 looper letters, 42 selfloop transitions, 8 changer transitions 0/56 dead transitions. [2022-12-12 14:41:02,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 56 transitions, 288 flow [2022-12-12 14:41:02,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 14:41:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 14:41:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2022-12-12 14:41:02,818 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2022-12-12 14:41:02,818 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 112 flow. Second operand 4 states and 70 transitions. [2022-12-12 14:41:02,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 56 transitions, 288 flow [2022-12-12 14:41:02,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 14:41:02,824 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 156 flow [2022-12-12 14:41:02,825 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2022-12-12 14:41:02,825 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2022-12-12 14:41:02,825 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 156 flow [2022-12-12 14:41:02,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2022-12-12 14:41:02,826 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:02,826 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:02,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 14:41:02,826 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)] === [2022-12-12 14:41:02,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:02,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1093053932, now seen corresponding path program 1 times [2022-12-12 14:41:02,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:02,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795296829] [2022-12-12 14:41:02,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:02,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:02,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:02,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795296829] [2022-12-12 14:41:02,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795296829] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:02,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:02,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:41:02,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130996862] [2022-12-12 14:41:02,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:02,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 14:41:02,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:02,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 14:41:02,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 14:41:02,892 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 14:41:02,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2022-12-12 14:41:02,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:02,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 14:41:02,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:03,031 INFO L130 PetriNetUnfolder]: 1031/1765 cut-off events. [2022-12-12 14:41:03,032 INFO L131 PetriNetUnfolder]: For 1295/1295 co-relation queries the response was YES. [2022-12-12 14:41:03,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4836 conditions, 1765 events. 1031/1765 cut-off events. For 1295/1295 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 9623 event pairs, 671 based on Foata normal form. 9/1387 useless extension candidates. Maximal degree in co-relation 4821. Up to 1351 conditions per place. [2022-12-12 14:41:03,040 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 36 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2022-12-12 14:41:03,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 288 flow [2022-12-12 14:41:03,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 14:41:03,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 14:41:03,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2022-12-12 14:41:03,042 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2022-12-12 14:41:03,042 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 156 flow. Second operand 3 states and 51 transitions. [2022-12-12 14:41:03,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 288 flow [2022-12-12 14:41:03,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 14:41:03,045 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 167 flow [2022-12-12 14:41:03,046 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2022-12-12 14:41:03,047 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2022-12-12 14:41:03,047 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 167 flow [2022-12-12 14:41:03,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2022-12-12 14:41:03,049 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:03,050 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:03,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 14:41:03,051 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)] === [2022-12-12 14:41:03,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:03,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1126948619, now seen corresponding path program 1 times [2022-12-12 14:41:03,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:03,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914212251] [2022-12-12 14:41:03,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:03,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:03,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:03,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914212251] [2022-12-12 14:41:03,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914212251] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:03,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:03,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:41:03,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664788372] [2022-12-12 14:41:03,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:03,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:41:03,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:03,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:41:03,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:41:03,146 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 14:41:03,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-12-12 14:41:03,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:03,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 14:41:03,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:03,270 INFO L130 PetriNetUnfolder]: 1089/1852 cut-off events. [2022-12-12 14:41:03,270 INFO L131 PetriNetUnfolder]: For 1866/1866 co-relation queries the response was YES. [2022-12-12 14:41:03,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5315 conditions, 1852 events. 1089/1852 cut-off events. For 1866/1866 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 10198 event pairs, 167 based on Foata normal form. 6/1466 useless extension candidates. Maximal degree in co-relation 5299. Up to 848 conditions per place. [2022-12-12 14:41:03,280 INFO L137 encePairwiseOnDemand]: 19/27 looper letters, 44 selfloop transitions, 17 changer transitions 0/67 dead transitions. [2022-12-12 14:41:03,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 67 transitions, 425 flow [2022-12-12 14:41:03,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 14:41:03,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 14:41:03,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2022-12-12 14:41:03,281 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2022-12-12 14:41:03,281 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 167 flow. Second operand 4 states and 74 transitions. [2022-12-12 14:41:03,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 67 transitions, 425 flow [2022-12-12 14:41:03,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 67 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 14:41:03,285 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 308 flow [2022-12-12 14:41:03,285 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2022-12-12 14:41:03,285 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2022-12-12 14:41:03,285 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 308 flow [2022-12-12 14:41:03,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-12-12 14:41:03,286 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:03,286 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:03,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 14:41:03,286 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)] === [2022-12-12 14:41:03,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:03,286 INFO L85 PathProgramCache]: Analyzing trace with hash -474693334, now seen corresponding path program 1 times [2022-12-12 14:41:03,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:03,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926488886] [2022-12-12 14:41:03,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:03,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:03,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:03,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926488886] [2022-12-12 14:41:03,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926488886] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:03,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:03,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 14:41:03,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468106932] [2022-12-12 14:41:03,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:03,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 14:41:03,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:03,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 14:41:03,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 14:41:03,344 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2022-12-12 14:41:03,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2022-12-12 14:41:03,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:03,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2022-12-12 14:41:03,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:03,451 INFO L130 PetriNetUnfolder]: 826/1493 cut-off events. [2022-12-12 14:41:03,451 INFO L131 PetriNetUnfolder]: For 2712/2768 co-relation queries the response was YES. [2022-12-12 14:41:03,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4537 conditions, 1493 events. 826/1493 cut-off events. For 2712/2768 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8784 event pairs, 230 based on Foata normal form. 63/1201 useless extension candidates. Maximal degree in co-relation 4517. Up to 935 conditions per place. [2022-12-12 14:41:03,460 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 31 selfloop transitions, 6 changer transitions 0/55 dead transitions. [2022-12-12 14:41:03,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 432 flow [2022-12-12 14:41:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 14:41:03,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 14:41:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2022-12-12 14:41:03,461 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2022-12-12 14:41:03,461 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 308 flow. Second operand 3 states and 52 transitions. [2022-12-12 14:41:03,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 432 flow [2022-12-12 14:41:03,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 432 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-12 14:41:03,466 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 328 flow [2022-12-12 14:41:03,466 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2022-12-12 14:41:03,466 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2022-12-12 14:41:03,467 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 328 flow [2022-12-12 14:41:03,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2022-12-12 14:41:03,467 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:03,467 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:03,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 14:41:03,467 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)] === [2022-12-12 14:41:03,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:03,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1197505512, now seen corresponding path program 1 times [2022-12-12 14:41:03,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:03,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662564643] [2022-12-12 14:41:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:03,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:03,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:03,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662564643] [2022-12-12 14:41:03,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662564643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:03,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:03,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:41:03,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877796308] [2022-12-12 14:41:03,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:03,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:41:03,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:03,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:41:03,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:41:03,541 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 14:41:03,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2022-12-12 14:41:03,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:03,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 14:41:03,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:03,767 INFO L130 PetriNetUnfolder]: 1866/3066 cut-off events. [2022-12-12 14:41:03,767 INFO L131 PetriNetUnfolder]: For 8181/8313 co-relation queries the response was YES. [2022-12-12 14:41:03,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9004 conditions, 3066 events. 1866/3066 cut-off events. For 8181/8313 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 19976 event pairs, 497 based on Foata normal form. 250/1968 useless extension candidates. Maximal degree in co-relation 8981. Up to 2134 conditions per place. [2022-12-12 14:41:03,782 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 75 selfloop transitions, 20 changer transitions 0/110 dead transitions. [2022-12-12 14:41:03,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 110 transitions, 915 flow [2022-12-12 14:41:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 14:41:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 14:41:03,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2022-12-12 14:41:03,784 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2022-12-12 14:41:03,784 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 328 flow. Second operand 5 states and 93 transitions. [2022-12-12 14:41:03,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 110 transitions, 915 flow [2022-12-12 14:41:03,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 110 transitions, 881 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 14:41:03,790 INFO L231 Difference]: Finished difference. Result has 55 places, 65 transitions, 466 flow [2022-12-12 14:41:03,790 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=466, PETRI_PLACES=55, PETRI_TRANSITIONS=65} [2022-12-12 14:41:03,791 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2022-12-12 14:41:03,791 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 65 transitions, 466 flow [2022-12-12 14:41:03,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2022-12-12 14:41:03,791 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:03,791 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:03,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 14:41:03,791 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)] === [2022-12-12 14:41:03,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1218788363, now seen corresponding path program 1 times [2022-12-12 14:41:03,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:03,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151158746] [2022-12-12 14:41:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:03,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:03,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:03,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151158746] [2022-12-12 14:41:03,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151158746] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:03,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:03,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:41:03,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103206599] [2022-12-12 14:41:03,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:03,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 14:41:03,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:03,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 14:41:03,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 14:41:03,863 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 14:41:03,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 65 transitions, 466 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2022-12-12 14:41:03,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:03,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 14:41:03,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:04,128 INFO L130 PetriNetUnfolder]: 1772/3081 cut-off events. [2022-12-12 14:41:04,128 INFO L131 PetriNetUnfolder]: For 9453/9949 co-relation queries the response was YES. [2022-12-12 14:41:04,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13281 conditions, 3081 events. 1772/3081 cut-off events. For 9453/9949 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 21669 event pairs, 96 based on Foata normal form. 296/1988 useless extension candidates. Maximal degree in co-relation 13255. Up to 2192 conditions per place. [2022-12-12 14:41:04,145 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 75 selfloop transitions, 39 changer transitions 12/141 dead transitions. [2022-12-12 14:41:04,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 141 transitions, 1297 flow [2022-12-12 14:41:04,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 14:41:04,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 14:41:04,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2022-12-12 14:41:04,146 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2022-12-12 14:41:04,146 INFO L175 Difference]: Start difference. First operand has 55 places, 65 transitions, 466 flow. Second operand 7 states and 132 transitions. [2022-12-12 14:41:04,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 141 transitions, 1297 flow [2022-12-12 14:41:04,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 141 transitions, 1287 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 14:41:04,156 INFO L231 Difference]: Finished difference. Result has 63 places, 84 transitions, 717 flow [2022-12-12 14:41:04,156 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=717, PETRI_PLACES=63, PETRI_TRANSITIONS=84} [2022-12-12 14:41:04,157 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2022-12-12 14:41:04,157 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 84 transitions, 717 flow [2022-12-12 14:41:04,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2022-12-12 14:41:04,157 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:04,157 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:04,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 14:41:04,157 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)] === [2022-12-12 14:41:04,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:04,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1135873337, now seen corresponding path program 1 times [2022-12-12 14:41:04,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:04,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205802654] [2022-12-12 14:41:04,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:04,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:04,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:04,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205802654] [2022-12-12 14:41:04,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205802654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:04,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:04,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:41:04,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169002856] [2022-12-12 14:41:04,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:04,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:41:04,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:04,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:41:04,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:41:04,219 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 14:41:04,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 84 transitions, 717 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-12-12 14:41:04,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:04,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 14:41:04,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:04,545 INFO L130 PetriNetUnfolder]: 2309/4203 cut-off events. [2022-12-12 14:41:04,546 INFO L131 PetriNetUnfolder]: For 19329/19741 co-relation queries the response was YES. [2022-12-12 14:41:04,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22288 conditions, 4203 events. 2309/4203 cut-off events. For 19329/19741 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 30923 event pairs, 335 based on Foata normal form. 149/3453 useless extension candidates. Maximal degree in co-relation 22258. Up to 2869 conditions per place. [2022-12-12 14:41:04,564 INFO L137 encePairwiseOnDemand]: 19/27 looper letters, 64 selfloop transitions, 22 changer transitions 60/158 dead transitions. [2022-12-12 14:41:04,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 158 transitions, 1606 flow [2022-12-12 14:41:04,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 14:41:04,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 14:41:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2022-12-12 14:41:04,565 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2022-12-12 14:41:04,565 INFO L175 Difference]: Start difference. First operand has 63 places, 84 transitions, 717 flow. Second operand 4 states and 73 transitions. [2022-12-12 14:41:04,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 158 transitions, 1606 flow [2022-12-12 14:41:04,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 158 transitions, 1383 flow, removed 87 selfloop flow, removed 2 redundant places. [2022-12-12 14:41:04,668 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 603 flow [2022-12-12 14:41:04,668 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=603, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2022-12-12 14:41:04,669 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2022-12-12 14:41:04,669 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 603 flow [2022-12-12 14:41:04,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-12-12 14:41:04,669 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:04,669 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:04,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 14:41:04,669 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)] === [2022-12-12 14:41:04,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:04,670 INFO L85 PathProgramCache]: Analyzing trace with hash -529720616, now seen corresponding path program 1 times [2022-12-12 14:41:04,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:04,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863899915] [2022-12-12 14:41:04,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:04,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:04,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:04,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863899915] [2022-12-12 14:41:04,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863899915] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:04,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:04,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 14:41:04,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488252629] [2022-12-12 14:41:04,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:04,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 14:41:04,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:04,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 14:41:04,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-12 14:41:04,736 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 14:41:04,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 603 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2022-12-12 14:41:04,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:04,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 14:41:04,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:04,939 INFO L130 PetriNetUnfolder]: 1023/2025 cut-off events. [2022-12-12 14:41:04,939 INFO L131 PetriNetUnfolder]: For 8919/9148 co-relation queries the response was YES. [2022-12-12 14:41:04,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9640 conditions, 2025 events. 1023/2025 cut-off events. For 8919/9148 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 15086 event pairs, 15 based on Foata normal form. 124/1249 useless extension candidates. Maximal degree in co-relation 9606. Up to 1135 conditions per place. [2022-12-12 14:41:04,949 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 19 selfloop transitions, 28 changer transitions 44/101 dead transitions. [2022-12-12 14:41:04,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 1088 flow [2022-12-12 14:41:04,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 14:41:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 14:41:04,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2022-12-12 14:41:04,950 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5661375661375662 [2022-12-12 14:41:04,950 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 603 flow. Second operand 7 states and 107 transitions. [2022-12-12 14:41:04,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 1088 flow [2022-12-12 14:41:04,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 101 transitions, 1038 flow, removed 25 selfloop flow, removed 3 redundant places. [2022-12-12 14:41:04,985 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 485 flow [2022-12-12 14:41:04,985 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=485, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2022-12-12 14:41:04,986 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2022-12-12 14:41:04,986 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 485 flow [2022-12-12 14:41:04,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2022-12-12 14:41:04,986 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:04,986 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:04,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 14:41:04,986 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)] === [2022-12-12 14:41:04,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:04,987 INFO L85 PathProgramCache]: Analyzing trace with hash -222536505, now seen corresponding path program 1 times [2022-12-12 14:41:04,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:04,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775110971] [2022-12-12 14:41:04,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:04,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:05,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:05,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775110971] [2022-12-12 14:41:05,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775110971] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:05,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:05,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:41:05,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795181450] [2022-12-12 14:41:05,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:05,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 14:41:05,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:05,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 14:41:05,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 14:41:05,083 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 14:41:05,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 485 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2022-12-12 14:41:05,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:05,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 14:41:05,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:05,160 INFO L130 PetriNetUnfolder]: 346/733 cut-off events. [2022-12-12 14:41:05,160 INFO L131 PetriNetUnfolder]: For 3955/4008 co-relation queries the response was YES. [2022-12-12 14:41:05,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4209 conditions, 733 events. 346/733 cut-off events. For 3955/4008 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4520 event pairs, 16 based on Foata normal form. 55/594 useless extension candidates. Maximal degree in co-relation 4173. Up to 474 conditions per place. [2022-12-12 14:41:05,163 INFO L137 encePairwiseOnDemand]: 19/27 looper letters, 35 selfloop transitions, 7 changer transitions 40/92 dead transitions. [2022-12-12 14:41:05,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 986 flow [2022-12-12 14:41:05,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 14:41:05,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 14:41:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2022-12-12 14:41:05,164 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2022-12-12 14:41:05,164 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 485 flow. Second operand 5 states and 76 transitions. [2022-12-12 14:41:05,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 986 flow [2022-12-12 14:41:05,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 92 transitions, 717 flow, removed 40 selfloop flow, removed 17 redundant places. [2022-12-12 14:41:05,172 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 264 flow [2022-12-12 14:41:05,173 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2022-12-12 14:41:05,174 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2022-12-12 14:41:05,174 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 264 flow [2022-12-12 14:41:05,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2022-12-12 14:41:05,174 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:41:05,174 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:05,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 14:41:05,174 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)] === [2022-12-12 14:41:05,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:41:05,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1593020193, now seen corresponding path program 2 times [2022-12-12 14:41:05,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:41:05,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228984606] [2022-12-12 14:41:05,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:41:05,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:41:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:41:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:41:05,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:41:05,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228984606] [2022-12-12 14:41:05,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228984606] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:41:05,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:41:05,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:41:05,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817625622] [2022-12-12 14:41:05,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:41:05,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:41:05,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:41:05,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:41:05,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:41:05,263 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 14:41:05,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2022-12-12 14:41:05,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:41:05,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 14:41:05,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:41:05,299 INFO L130 PetriNetUnfolder]: 107/228 cut-off events. [2022-12-12 14:41:05,299 INFO L131 PetriNetUnfolder]: For 588/599 co-relation queries the response was YES. [2022-12-12 14:41:05,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874 conditions, 228 events. 107/228 cut-off events. For 588/599 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 965 event pairs, 2 based on Foata normal form. 35/201 useless extension candidates. Maximal degree in co-relation 851. Up to 138 conditions per place. [2022-12-12 14:41:05,300 INFO L137 encePairwiseOnDemand]: 23/27 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2022-12-12 14:41:05,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 408 flow [2022-12-12 14:41:05,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 14:41:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 14:41:05,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2022-12-12 14:41:05,301 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2022-12-12 14:41:05,301 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 264 flow. Second operand 5 states and 62 transitions. [2022-12-12 14:41:05,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 408 flow [2022-12-12 14:41:05,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 346 flow, removed 1 selfloop flow, removed 13 redundant places. [2022-12-12 14:41:05,302 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2022-12-12 14:41:05,302 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2022-12-12 14:41:05,302 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2022-12-12 14:41:05,303 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2022-12-12 14:41:05,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2022-12-12 14:41:05,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 14:41:05,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 14:41:05,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 14:41:05,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 14:41:05,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 14:41:05,305 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:41:05,307 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 14:41:05,307 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 14:41:05,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 02:41:05 BasicIcfg [2022-12-12 14:41:05,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 14:41:05,309 INFO L158 Benchmark]: Toolchain (without parser) took 6142.79ms. Allocated memory was 198.2MB in the beginning and 340.8MB in the end (delta: 142.6MB). Free memory was 171.6MB in the beginning and 147.6MB in the end (delta: 23.9MB). Peak memory consumption was 167.6MB. Max. memory is 8.0GB. [2022-12-12 14:41:05,310 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory is still 174.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 14:41:05,310 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.30ms. Allocated memory is still 198.2MB. Free memory was 171.1MB in the beginning and 148.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-12 14:41:05,310 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.46ms. Allocated memory is still 198.2MB. Free memory was 148.0MB in the beginning and 145.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 14:41:05,310 INFO L158 Benchmark]: Boogie Preprocessor took 23.08ms. Allocated memory is still 198.2MB. Free memory was 145.9MB in the beginning and 144.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 14:41:05,310 INFO L158 Benchmark]: RCFGBuilder took 276.55ms. Allocated memory is still 198.2MB. Free memory was 144.3MB in the beginning and 130.7MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 14:41:05,311 INFO L158 Benchmark]: TraceAbstraction took 5394.67ms. Allocated memory was 198.2MB in the beginning and 340.8MB in the end (delta: 142.6MB). Free memory was 129.6MB in the beginning and 147.6MB in the end (delta: -18.0MB). Peak memory consumption was 125.7MB. Max. memory is 8.0GB. [2022-12-12 14:41:05,312 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory is still 174.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 388.30ms. Allocated memory is still 198.2MB. Free memory was 171.1MB in the beginning and 148.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.46ms. Allocated memory is still 198.2MB. Free memory was 148.0MB in the beginning and 145.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.08ms. Allocated memory is still 198.2MB. Free memory was 145.9MB in the beginning and 144.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 276.55ms. Allocated memory is still 198.2MB. Free memory was 144.3MB in the beginning and 130.7MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 5394.67ms. Allocated memory was 198.2MB in the beginning and 340.8MB in the end (delta: 142.6MB). Free memory was 129.6MB in the beginning and 147.6MB in the end (delta: -18.0MB). Peak memory consumption was 125.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 78 PlacesBefore, 36 PlacesAfterwards, 69 TransitionsBefore, 27 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 32 ConcurrentYvCompositions, 0 ChoiceCompositions, 52 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1021, independent: 968, independent conditional: 968, independent unconditional: 0, dependent: 53, dependent conditional: 53, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1021, independent: 968, independent conditional: 0, independent unconditional: 968, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1021, independent: 968, independent conditional: 0, independent unconditional: 968, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1021, independent: 968, independent conditional: 0, independent unconditional: 968, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 756, independent: 716, independent conditional: 0, independent unconditional: 716, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 756, independent: 702, independent conditional: 0, independent unconditional: 702, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 54, independent: 14, independent conditional: 0, independent unconditional: 14, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 121, independent: 51, independent conditional: 0, independent unconditional: 51, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1021, independent: 252, independent conditional: 0, independent unconditional: 252, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 756, unknown conditional: 0, unknown unconditional: 756] , Statistics on independence cache: Total cache size (in pairs): 1212, Positive cache size: 1172, Positive conditional cache size: 0, Positive unconditional cache size: 1172, Negative cache size: 40, Negative conditional cache size: 0, Negative unconditional cache size: 40, 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, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 239 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 239 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 695 IncrementalHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 20 mSDtfsCounter, 695 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=717occurred in iteration=7, InterpolantAutomatonStates: 50, 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, 0.9s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 642 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! [2022-12-12 14:41:05,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...