/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 --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 18:42:36,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 18:42:36,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 18:42:36,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 18:42:36,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 18:42:36,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 18:42:36,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 18:42:36,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 18:42:36,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 18:42:36,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 18:42:36,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 18:42:36,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 18:42:36,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 18:42:36,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 18:42:36,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 18:42:36,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 18:42:36,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 18:42:36,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 18:42:36,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 18:42:36,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 18:42:36,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 18:42:36,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 18:42:36,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 18:42:36,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 18:42:36,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 18:42:36,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 18:42:36,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 18:42:36,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 18:42:36,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 18:42:36,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 18:42:36,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 18:42:36,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 18:42:36,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 18:42:36,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 18:42:36,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 18:42:36,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 18:42:36,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 18:42:36,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 18:42:36,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 18:42:36,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 18:42:36,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 18:42:36,282 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 18:42:36,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 18:42:36,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 18:42:36,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 18:42:36,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 18:42:36,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 18:42:36,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 18:42:36,326 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 18:42:36,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 18:42:36,326 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 18:42:36,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 18:42:36,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 18:42:36,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 18:42:36,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 18:42:36,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 18:42:36,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 18:42:36,328 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 18:42:36,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 18:42:36,328 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 18:42:36,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 18:42:36,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 18:42:36,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 18:42:36,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 18:42:36,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 18:42:36,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:42:36,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 18:42:36,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 18:42:36,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 18:42:36,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 18:42:36,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 18:42:36,330 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 18:42:36,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 18:42:36,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 18:42:36,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 18:42:36,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 18:42:36,679 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 18:42:36,679 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 18:42:36,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 18:42:37,951 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 18:42:38,251 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 18:42:38,252 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 18:42:38,264 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799b24889/86a2c0db1cbb4550a14133217d9789f3/FLAG0f4e9e434 [2022-12-12 18:42:38,279 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/799b24889/86a2c0db1cbb4550a14133217d9789f3 [2022-12-12 18:42:38,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 18:42:38,283 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 18:42:38,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 18:42:38,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 18:42:38,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 18:42:38,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:42:38" (1/1) ... [2022-12-12 18:42:38,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35339cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:42:38, skipping insertion in model container [2022-12-12 18:42:38,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:42:38" (1/1) ... [2022-12-12 18:42:38,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 18:42:38,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 18:42:38,497 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-12 18:42:38,662 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,662 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,663 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,663 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,663 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,663 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,664 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,668 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,669 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,680 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:42:38,693 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 18:42:38,705 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-12 18:42:38,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,737 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,738 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,738 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,738 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,738 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,741 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:42:38,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:42:38,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:42:38,799 INFO L208 MainTranslator]: Completed translation [2022-12-12 18:42:38,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:42:38 WrapperNode [2022-12-12 18:42:38,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 18:42:38,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 18:42:38,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 18:42:38,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 18:42:38,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:42:38" (1/1) ... [2022-12-12 18:42:38,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:42:38" (1/1) ... [2022-12-12 18:42:38,858 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-12 18:42:38,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 18:42:38,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 18:42:38,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 18:42:38,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 18:42:38,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:42:38" (1/1) ... [2022-12-12 18:42:38,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:42:38" (1/1) ... [2022-12-12 18:42:38,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:42:38" (1/1) ... [2022-12-12 18:42:38,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:42:38" (1/1) ... [2022-12-12 18:42:38,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:42:38" (1/1) ... [2022-12-12 18:42:38,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:42:38" (1/1) ... [2022-12-12 18:42:38,887 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:42:38" (1/1) ... [2022-12-12 18:42:38,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:42:38" (1/1) ... [2022-12-12 18:42:38,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 18:42:38,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 18:42:38,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 18:42:38,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 18:42:38,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:42:38" (1/1) ... [2022-12-12 18:42:38,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:42:38,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:42:38,933 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 18:42:38,956 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 18:42:38,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 18:42:38,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 18:42:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 18:42:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 18:42:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 18:42:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 18:42:38,977 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 18:42:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 18:42:38,977 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 18:42:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 18:42:38,977 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 18:42:38,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 18:42:38,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 18:42:38,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 18:42:38,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 18:42:38,979 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 18:42:39,098 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 18:42:39,100 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 18:42:39,272 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 18:42:39,279 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 18:42:39,279 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 18:42:39,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:42:39 BoogieIcfgContainer [2022-12-12 18:42:39,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 18:42:39,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 18:42:39,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 18:42:39,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 18:42:39,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 06:42:38" (1/3) ... [2022-12-12 18:42:39,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8f54aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:42:39, skipping insertion in model container [2022-12-12 18:42:39,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:42:38" (2/3) ... [2022-12-12 18:42:39,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8f54aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:42:39, skipping insertion in model container [2022-12-12 18:42:39,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:42:39" (3/3) ... [2022-12-12 18:42:39,289 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 18:42:39,307 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 18:42:39,307 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 18:42:39,307 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 18:42:39,385 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 18:42:39,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2022-12-12 18:42:39,468 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2022-12-12 18:42:39,468 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:42:39,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-12-12 18:42:39,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2022-12-12 18:42:39,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2022-12-12 18:42:39,482 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 18:42:39,501 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2022-12-12 18:42:39,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2022-12-12 18:42:39,525 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2022-12-12 18:42:39,525 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:42:39,525 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 2. Compared 34 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2022-12-12 18:42:39,530 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2022-12-12 18:42:39,530 INFO L226 LiptonReduction]: Number of co-enabled transitions 974 [2022-12-12 18:42:41,643 INFO L241 LiptonReduction]: Total number of compositions: 53 [2022-12-12 18:42:41,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 18:42:41,662 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;@59d73545, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 18:42:41,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 18:42:41,667 INFO L130 PetriNetUnfolder]: 0/20 cut-off events. [2022-12-12 18:42:41,667 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:42:41,667 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:42:41,668 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:42:41,668 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 18:42:41,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:42:41,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1773352347, now seen corresponding path program 1 times [2022-12-12 18:42:41,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:42:41,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788128168] [2022-12-12 18:42:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:42:41,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:42:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:42:42,167 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 18:42:42,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:42:42,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788128168] [2022-12-12 18:42:42,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788128168] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:42:42,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:42:42,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 18:42:42,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016271750] [2022-12-12 18:42:42,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:42:42,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:42:42,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:42:42,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:42:42,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:42:42,208 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2022-12-12 18:42:42,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 18:42:42,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:42:42,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2022-12-12 18:42:42,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:42:42,386 INFO L130 PetriNetUnfolder]: 532/924 cut-off events. [2022-12-12 18:42:42,386 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-12-12 18:42:42,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1800 conditions, 924 events. 532/924 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4631 event pairs, 185 based on Foata normal form. 4/741 useless extension candidates. Maximal degree in co-relation 1789. Up to 792 conditions per place. [2022-12-12 18:42:42,401 INFO L137 encePairwiseOnDemand]: 21/26 looper letters, 25 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2022-12-12 18:42:42,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 141 flow [2022-12-12 18:42:42,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:42:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:42:42,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2022-12-12 18:42:42,410 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-12-12 18:42:42,413 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2022-12-12 18:42:42,414 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 35 transitions, 141 flow [2022-12-12 18:42:42,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 35 transitions, 141 flow [2022-12-12 18:42:42,421 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 141 flow [2022-12-12 18:42:42,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 18:42:42,421 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:42:42,421 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:42:42,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 18:42:42,422 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 18:42:42,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:42:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash 860651159, now seen corresponding path program 1 times [2022-12-12 18:42:42,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:42:42,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460888321] [2022-12-12 18:42:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:42:42,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:42:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:42:42,594 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 18:42:42,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:42:42,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460888321] [2022-12-12 18:42:42,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460888321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:42:42,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:42:42,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 18:42:42,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154676356] [2022-12-12 18:42:42,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:42:42,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:42:42,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:42:42,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:42:42,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:42:42,597 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 26 [2022-12-12 18:42:42,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 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 18:42:42,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:42:42,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 26 [2022-12-12 18:42:42,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:42:42,697 INFO L130 PetriNetUnfolder]: 492/867 cut-off events. [2022-12-12 18:42:42,698 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2022-12-12 18:42:42,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2397 conditions, 867 events. 492/867 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4370 event pairs, 85 based on Foata normal form. 16/704 useless extension candidates. Maximal degree in co-relation 2383. Up to 736 conditions per place. [2022-12-12 18:42:42,705 INFO L137 encePairwiseOnDemand]: 23/26 looper letters, 30 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2022-12-12 18:42:42,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 231 flow [2022-12-12 18:42:42,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:42:42,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:42:42,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2022-12-12 18:42:42,707 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2022-12-12 18:42:42,708 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2022-12-12 18:42:42,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 41 transitions, 231 flow [2022-12-12 18:42:42,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 41 transitions, 231 flow [2022-12-12 18:42:42,714 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 231 flow [2022-12-12 18:42:42,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 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 18:42:42,714 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:42:42,714 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:42:42,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 18:42:42,715 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 18:42:42,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:42:42,715 INFO L85 PathProgramCache]: Analyzing trace with hash 860651872, now seen corresponding path program 1 times [2022-12-12 18:42:42,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:42:42,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310018297] [2022-12-12 18:42:42,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:42:42,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:42:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:42:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:42:42,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:42:42,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310018297] [2022-12-12 18:42:42,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310018297] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:42:42,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:42:42,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:42:42,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175963035] [2022-12-12 18:42:42,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:42:42,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:42:42,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:42:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:42:42,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:42:42,837 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2022-12-12 18:42:42,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 231 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 18:42:42,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:42:42,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2022-12-12 18:42:42,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:42:43,044 INFO L130 PetriNetUnfolder]: 677/1204 cut-off events. [2022-12-12 18:42:43,044 INFO L131 PetriNetUnfolder]: For 176/184 co-relation queries the response was YES. [2022-12-12 18:42:43,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4362 conditions, 1204 events. 677/1204 cut-off events. For 176/184 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6912 event pairs, 36 based on Foata normal form. 60/994 useless extension candidates. Maximal degree in co-relation 4345. Up to 1032 conditions per place. [2022-12-12 18:42:43,054 INFO L137 encePairwiseOnDemand]: 20/26 looper letters, 52 selfloop transitions, 13 changer transitions 4/76 dead transitions. [2022-12-12 18:42:43,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 76 transitions, 579 flow [2022-12-12 18:42:43,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 18:42:43,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 18:42:43,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2022-12-12 18:42:43,059 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2022-12-12 18:42:43,061 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2022-12-12 18:42:43,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 76 transitions, 579 flow [2022-12-12 18:42:43,068 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 72 transitions, 547 flow [2022-12-12 18:42:43,069 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 72 transitions, 547 flow [2022-12-12 18:42:43,069 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 18:42:43,069 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:42:43,069 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:42:43,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 18:42:43,070 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 18:42:43,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:42:43,070 INFO L85 PathProgramCache]: Analyzing trace with hash 910425179, now seen corresponding path program 1 times [2022-12-12 18:42:43,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:42:43,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680342659] [2022-12-12 18:42:43,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:42:43,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:42:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:42:43,194 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 18:42:43,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:42:43,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680342659] [2022-12-12 18:42:43,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680342659] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:42:43,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:42:43,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:42:43,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998489562] [2022-12-12 18:42:43,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:42:43,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:42:43,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:42:43,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:42:43,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:42:43,202 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2022-12-12 18:42:43,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 72 transitions, 547 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 18:42:43,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:42:43,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2022-12-12 18:42:43,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:42:43,335 INFO L130 PetriNetUnfolder]: 608/1122 cut-off events. [2022-12-12 18:42:43,336 INFO L131 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2022-12-12 18:42:43,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5028 conditions, 1122 events. 608/1122 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6614 event pairs, 44 based on Foata normal form. 9/891 useless extension candidates. Maximal degree in co-relation 5008. Up to 954 conditions per place. [2022-12-12 18:42:43,345 INFO L137 encePairwiseOnDemand]: 23/26 looper letters, 73 selfloop transitions, 6 changer transitions 0/86 dead transitions. [2022-12-12 18:42:43,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 86 transitions, 817 flow [2022-12-12 18:42:43,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:42:43,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:42:43,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2022-12-12 18:42:43,347 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2022-12-12 18:42:43,347 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2022-12-12 18:42:43,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 86 transitions, 817 flow [2022-12-12 18:42:43,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 86 transitions, 817 flow [2022-12-12 18:42:43,354 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 86 transitions, 817 flow [2022-12-12 18:42:43,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 18:42:43,355 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:42:43,355 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:42:43,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 18:42:43,355 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 18:42:43,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:42:43,356 INFO L85 PathProgramCache]: Analyzing trace with hash 910403324, now seen corresponding path program 1 times [2022-12-12 18:42:43,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:42:43,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452326708] [2022-12-12 18:42:43,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:42:43,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:42:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:42:43,500 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 18:42:43,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:42:43,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452326708] [2022-12-12 18:42:43,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452326708] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:42:43,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:42:43,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:42:43,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608466171] [2022-12-12 18:42:43,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:42:43,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 18:42:43,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:42:43,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 18:42:43,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 18:42:43,503 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2022-12-12 18:42:43,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 86 transitions, 817 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 18:42:43,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:42:43,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2022-12-12 18:42:43,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:42:43,663 INFO L130 PetriNetUnfolder]: 693/1285 cut-off events. [2022-12-12 18:42:43,663 INFO L131 PetriNetUnfolder]: For 490/550 co-relation queries the response was YES. [2022-12-12 18:42:43,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6883 conditions, 1285 events. 693/1285 cut-off events. For 490/550 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8018 event pairs, 32 based on Foata normal form. 62/1048 useless extension candidates. Maximal degree in co-relation 6860. Up to 1099 conditions per place. [2022-12-12 18:42:43,672 INFO L137 encePairwiseOnDemand]: 22/26 looper letters, 44 selfloop transitions, 5 changer transitions 37/93 dead transitions. [2022-12-12 18:42:43,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 93 transitions, 1057 flow [2022-12-12 18:42:43,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:42:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:42:43,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2022-12-12 18:42:43,676 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6442307692307693 [2022-12-12 18:42:43,678 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2022-12-12 18:42:43,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 93 transitions, 1057 flow [2022-12-12 18:42:43,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 56 transitions, 617 flow [2022-12-12 18:42:43,686 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 56 transitions, 617 flow [2022-12-12 18:42:43,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 18:42:43,687 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:42:43,688 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:42:43,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 18:42:43,688 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 18:42:43,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:42:43,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1842910195, now seen corresponding path program 1 times [2022-12-12 18:42:43,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:42:43,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407884588] [2022-12-12 18:42:43,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:42:43,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:42:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:42:43,814 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 18:42:43,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:42:43,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407884588] [2022-12-12 18:42:43,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407884588] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:42:43,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:42:43,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:42:43,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503960785] [2022-12-12 18:42:43,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:42:43,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 18:42:43,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:42:43,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 18:42:43,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 18:42:43,819 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2022-12-12 18:42:43,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 56 transitions, 617 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 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 18:42:43,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:42:43,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2022-12-12 18:42:43,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:42:43,938 INFO L130 PetriNetUnfolder]: 538/934 cut-off events. [2022-12-12 18:42:43,938 INFO L131 PetriNetUnfolder]: For 1159/1159 co-relation queries the response was YES. [2022-12-12 18:42:43,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5919 conditions, 934 events. 538/934 cut-off events. For 1159/1159 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4356 event pairs, 27 based on Foata normal form. 48/751 useless extension candidates. Maximal degree in co-relation 5893. Up to 800 conditions per place. [2022-12-12 18:42:43,944 INFO L137 encePairwiseOnDemand]: 22/26 looper letters, 30 selfloop transitions, 3 changer transitions 36/74 dead transitions. [2022-12-12 18:42:43,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 74 transitions, 965 flow [2022-12-12 18:42:43,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:42:43,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:42:43,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2022-12-12 18:42:43,945 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2022-12-12 18:42:43,945 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 16 predicate places. [2022-12-12 18:42:43,946 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 74 transitions, 965 flow [2022-12-12 18:42:43,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 38 transitions, 472 flow [2022-12-12 18:42:43,951 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 472 flow [2022-12-12 18:42:43,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 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 18:42:43,951 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:42:43,951 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:42:43,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 18:42:43,951 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 18:42:43,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:42:43,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1254781370, now seen corresponding path program 1 times [2022-12-12 18:42:43,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:42:43,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161651719] [2022-12-12 18:42:43,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:42:43,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:42:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:42:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:42:44,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:42:44,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161651719] [2022-12-12 18:42:44,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161651719] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:42:44,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:42:44,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:42:44,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772848360] [2022-12-12 18:42:44,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:42:44,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:42:44,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:42:44,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:42:44,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:42:44,047 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2022-12-12 18:42:44,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 472 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 18:42:44,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:42:44,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2022-12-12 18:42:44,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:42:44,147 INFO L130 PetriNetUnfolder]: 507/800 cut-off events. [2022-12-12 18:42:44,147 INFO L131 PetriNetUnfolder]: For 1982/2002 co-relation queries the response was YES. [2022-12-12 18:42:44,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5299 conditions, 800 events. 507/800 cut-off events. For 1982/2002 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3301 event pairs, 120 based on Foata normal form. 7/627 useless extension candidates. Maximal degree in co-relation 5270. Up to 737 conditions per place. [2022-12-12 18:42:44,161 INFO L137 encePairwiseOnDemand]: 15/26 looper letters, 32 selfloop transitions, 18 changer transitions 1/54 dead transitions. [2022-12-12 18:42:44,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 763 flow [2022-12-12 18:42:44,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:42:44,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:42:44,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2022-12-12 18:42:44,163 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2022-12-12 18:42:44,163 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 16 predicate places. [2022-12-12 18:42:44,164 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 54 transitions, 763 flow [2022-12-12 18:42:44,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 53 transitions, 761 flow [2022-12-12 18:42:44,171 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 761 flow [2022-12-12 18:42:44,171 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 18:42:44,171 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:42:44,172 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:42:44,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 18:42:44,172 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 18:42:44,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:42:44,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1143086524, now seen corresponding path program 1 times [2022-12-12 18:42:44,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:42:44,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239560400] [2022-12-12 18:42:44,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:42:44,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:42:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:42:44,277 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 18:42:44,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:42:44,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239560400] [2022-12-12 18:42:44,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239560400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:42:44,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:42:44,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:42:44,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086086219] [2022-12-12 18:42:44,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:42:44,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:42:44,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:42:44,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:42:44,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:42:44,279 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2022-12-12 18:42:44,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 761 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 18:42:44,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:42:44,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2022-12-12 18:42:44,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:42:44,374 INFO L130 PetriNetUnfolder]: 331/581 cut-off events. [2022-12-12 18:42:44,375 INFO L131 PetriNetUnfolder]: For 1796/1871 co-relation queries the response was YES. [2022-12-12 18:42:44,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4437 conditions, 581 events. 331/581 cut-off events. For 1796/1871 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2611 event pairs, 50 based on Foata normal form. 47/501 useless extension candidates. Maximal degree in co-relation 4405. Up to 536 conditions per place. [2022-12-12 18:42:44,379 INFO L137 encePairwiseOnDemand]: 15/26 looper letters, 27 selfloop transitions, 31 changer transitions 0/61 dead transitions. [2022-12-12 18:42:44,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 61 transitions, 969 flow [2022-12-12 18:42:44,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:42:44,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:42:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2022-12-12 18:42:44,380 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2022-12-12 18:42:44,382 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 18 predicate places. [2022-12-12 18:42:44,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 61 transitions, 969 flow [2022-12-12 18:42:44,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 61 transitions, 969 flow [2022-12-12 18:42:44,387 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 969 flow [2022-12-12 18:42:44,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 18:42:44,387 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:42:44,387 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:42:44,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 18:42:44,388 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 18:42:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:42:44,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1082383244, now seen corresponding path program 1 times [2022-12-12 18:42:44,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:42:44,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893560668] [2022-12-12 18:42:44,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:42:44,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:42:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:42:44,508 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 18:42:44,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:42:44,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893560668] [2022-12-12 18:42:44,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893560668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:42:44,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:42:44,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 18:42:44,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752010399] [2022-12-12 18:42:44,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:42:44,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 18:42:44,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:42:44,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 18:42:44,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-12 18:42:44,515 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2022-12-12 18:42:44,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 969 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 18:42:44,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:42:44,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2022-12-12 18:42:44,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:42:44,597 INFO L130 PetriNetUnfolder]: 138/309 cut-off events. [2022-12-12 18:42:44,597 INFO L131 PetriNetUnfolder]: For 1451/1505 co-relation queries the response was YES. [2022-12-12 18:42:44,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2666 conditions, 309 events. 138/309 cut-off events. For 1451/1505 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1396 event pairs, 0 based on Foata normal form. 80/319 useless extension candidates. Maximal degree in co-relation 2631. Up to 280 conditions per place. [2022-12-12 18:42:44,599 INFO L137 encePairwiseOnDemand]: 15/26 looper letters, 17 selfloop transitions, 40 changer transitions 0/60 dead transitions. [2022-12-12 18:42:44,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 1065 flow [2022-12-12 18:42:44,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 18:42:44,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 18:42:44,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2022-12-12 18:42:44,601 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5307692307692308 [2022-12-12 18:42:44,601 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2022-12-12 18:42:44,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 60 transitions, 1065 flow [2022-12-12 18:42:44,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 60 transitions, 1065 flow [2022-12-12 18:42:44,604 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 60 transitions, 1065 flow [2022-12-12 18:42:44,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 18:42:44,604 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:42:44,604 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:42:44,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 18:42:44,604 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 18:42:44,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:42:44,605 INFO L85 PathProgramCache]: Analyzing trace with hash 756772766, now seen corresponding path program 1 times [2022-12-12 18:42:44,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:42:44,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108224270] [2022-12-12 18:42:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:42:44,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:42:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:42:44,739 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 18:42:44,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:42:44,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108224270] [2022-12-12 18:42:44,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108224270] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:42:44,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:42:44,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:42:44,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657586972] [2022-12-12 18:42:44,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:42:44,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:42:44,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:42:44,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:42:44,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:42:44,742 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2022-12-12 18:42:44,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 60 transitions, 1065 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 18:42:44,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:42:44,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2022-12-12 18:42:44,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:42:44,809 INFO L130 PetriNetUnfolder]: 138/282 cut-off events. [2022-12-12 18:42:44,809 INFO L131 PetriNetUnfolder]: For 1371/1393 co-relation queries the response was YES. [2022-12-12 18:42:44,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2614 conditions, 282 events. 138/282 cut-off events. For 1371/1393 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1176 event pairs, 0 based on Foata normal form. 31/243 useless extension candidates. Maximal degree in co-relation 2576. Up to 253 conditions per place. [2022-12-12 18:42:44,810 INFO L137 encePairwiseOnDemand]: 21/26 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2022-12-12 18:42:44,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 67 transitions, 1317 flow [2022-12-12 18:42:44,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 18:42:44,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 18:42:44,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2022-12-12 18:42:44,811 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2022-12-12 18:42:44,812 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 25 predicate places. [2022-12-12 18:42:44,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 67 transitions, 1317 flow [2022-12-12 18:42:44,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 18:42:44,813 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 18:42:44,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 18:42:44,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 18:42:44,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 18:42:44,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 18:42:44,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 18:42:44,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 18:42:44,816 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:42:44,818 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 18:42:44,818 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 18:42:44,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 06:42:44 BasicIcfg [2022-12-12 18:42:44,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 18:42:44,822 INFO L158 Benchmark]: Toolchain (without parser) took 6538.97ms. Allocated memory was 213.9MB in the beginning and 327.2MB in the end (delta: 113.2MB). Free memory was 187.9MB in the beginning and 287.7MB in the end (delta: -99.7MB). Peak memory consumption was 15.1MB. Max. memory is 8.0GB. [2022-12-12 18:42:44,822 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 213.9MB. Free memory is still 190.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 18:42:44,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 514.52ms. Allocated memory is still 213.9MB. Free memory was 187.9MB in the beginning and 164.9MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-12 18:42:44,823 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.85ms. Allocated memory is still 213.9MB. Free memory was 164.9MB in the beginning and 162.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 18:42:44,823 INFO L158 Benchmark]: Boogie Preprocessor took 30.78ms. Allocated memory is still 213.9MB. Free memory was 162.8MB in the beginning and 161.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 18:42:44,823 INFO L158 Benchmark]: RCFGBuilder took 390.43ms. Allocated memory is still 213.9MB. Free memory was 161.7MB in the beginning and 147.6MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 18:42:44,823 INFO L158 Benchmark]: TraceAbstraction took 5538.26ms. Allocated memory was 213.9MB in the beginning and 327.2MB in the end (delta: 113.2MB). Free memory was 146.5MB in the beginning and 287.7MB in the end (delta: -141.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 18:42:44,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 213.9MB. Free memory is still 190.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 514.52ms. Allocated memory is still 213.9MB. Free memory was 187.9MB in the beginning and 164.9MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.85ms. Allocated memory is still 213.9MB. Free memory was 164.9MB in the beginning and 162.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.78ms. Allocated memory is still 213.9MB. Free memory was 162.8MB in the beginning and 161.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 390.43ms. Allocated memory is still 213.9MB. Free memory was 161.7MB in the beginning and 147.6MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 5538.26ms. Allocated memory was 213.9MB in the beginning and 327.2MB in the end (delta: 113.2MB). Free memory was 146.5MB in the beginning and 287.7MB in the end (delta: -141.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 78 PlacesBefore, 35 PlacesAfterwards, 69 TransitionsBefore, 26 TransitionsAfterwards, 974 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 32 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1170, independent: 1112, independent conditional: 1112, independent unconditional: 0, dependent: 58, dependent conditional: 58, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1170, independent: 1112, independent conditional: 0, independent unconditional: 1112, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1170, independent: 1112, independent conditional: 0, independent unconditional: 1112, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1170, independent: 1112, independent conditional: 0, independent unconditional: 1112, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 813, independent: 777, independent conditional: 0, independent unconditional: 777, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 813, independent: 754, independent conditional: 0, independent unconditional: 754, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 59, independent: 23, independent conditional: 0, independent unconditional: 23, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 136, independent: 61, independent conditional: 0, independent unconditional: 61, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1170, independent: 335, independent conditional: 0, independent unconditional: 335, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 813, unknown conditional: 0, unknown unconditional: 813] , Statistics on independence cache: Total cache size (in pairs): 1215, Positive cache size: 1179, Positive conditional cache size: 0, Positive unconditional cache size: 1179, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36, 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, 106 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.1s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.4s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 191 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 191 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 431 IncrementalHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 4 mSDtfsCounter, 431 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1065occurred in iteration=9, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 2284 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 414 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 18:42:44,843 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...