/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 12:04:45,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 12:04:45,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 12:04:45,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 12:04:45,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 12:04:45,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 12:04:45,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 12:04:45,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 12:04:45,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 12:04:45,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 12:04:45,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 12:04:45,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 12:04:45,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 12:04:45,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 12:04:45,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 12:04:45,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 12:04:45,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 12:04:45,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 12:04:45,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 12:04:45,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 12:04:45,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 12:04:45,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 12:04:45,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 12:04:45,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 12:04:45,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 12:04:45,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 12:04:45,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 12:04:45,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 12:04:45,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 12:04:45,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 12:04:45,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 12:04:45,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 12:04:45,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 12:04:45,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 12:04:45,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 12:04:45,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 12:04:45,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 12:04:45,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 12:04:45,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 12:04:45,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 12:04:45,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 12:04:45,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-12 12:04:45,428 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 12:04:45,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 12:04:45,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 12:04:45,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 12:04:45,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 12:04:45,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 12:04:45,430 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 12:04:45,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 12:04:45,431 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 12:04:45,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 12:04:45,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 12:04:45,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 12:04:45,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 12:04:45,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 12:04:45,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 12:04:45,432 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 12:04:45,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 12:04:45,432 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 12:04:45,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 12:04:45,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 12:04:45,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 12:04:45,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 12:04:45,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 12:04:45,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:04:45,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 12:04:45,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 12:04:45,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 12:04:45,433 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 12:04:45,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 12:04:45,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 12:04:45,433 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 12:04:45,433 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 12:04:45,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 12:04:45,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 12:04:45,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 12:04:45,876 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 12:04:45,877 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 12:04:45,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.i [2022-12-12 12:04:46,935 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 12:04:47,185 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 12:04:47,185 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.i [2022-12-12 12:04:47,204 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b5430c2c/6ed6ae9d137e45bb8f56329771cbb671/FLAG8c6806f6e [2022-12-12 12:04:47,217 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b5430c2c/6ed6ae9d137e45bb8f56329771cbb671 [2022-12-12 12:04:47,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 12:04:47,220 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 12:04:47,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 12:04:47,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 12:04:47,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 12:04:47,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:04:47" (1/1) ... [2022-12-12 12:04:47,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f6c736e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:04:47, skipping insertion in model container [2022-12-12 12:04:47,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:04:47" (1/1) ... [2022-12-12 12:04:47,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 12:04:47,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 12:04:47,440 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/safe030_tso.i[945,958] [2022-12-12 12:04:47,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,602 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,602 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:04:47,613 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 12:04:47,624 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/safe030_tso.i[945,958] [2022-12-12 12:04:47,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,649 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,649 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,649 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,649 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,649 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,649 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,650 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,651 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,651 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,652 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,652 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,653 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,660 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,660 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,661 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,661 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,661 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:04:47,663 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:04:47,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:04:47,699 INFO L208 MainTranslator]: Completed translation [2022-12-12 12:04:47,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:04:47 WrapperNode [2022-12-12 12:04:47,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 12:04:47,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 12:04:47,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 12:04:47,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 12:04:47,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:04:47" (1/1) ... [2022-12-12 12:04:47,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:04:47" (1/1) ... [2022-12-12 12:04:47,751 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2022-12-12 12:04:47,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 12:04:47,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 12:04:47,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 12:04:47,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 12:04:47,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:04:47" (1/1) ... [2022-12-12 12:04:47,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:04:47" (1/1) ... [2022-12-12 12:04:47,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:04:47" (1/1) ... [2022-12-12 12:04:47,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:04:47" (1/1) ... [2022-12-12 12:04:47,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:04:47" (1/1) ... [2022-12-12 12:04:47,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:04:47" (1/1) ... [2022-12-12 12:04:47,783 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:04:47" (1/1) ... [2022-12-12 12:04:47,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:04:47" (1/1) ... [2022-12-12 12:04:47,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 12:04:47,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 12:04:47,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 12:04:47,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 12:04:47,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:04:47" (1/1) ... [2022-12-12 12:04:47,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:04:47,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:04:47,821 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 12:04:47,837 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 12:04:47,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 12:04:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 12:04:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 12:04:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 12:04:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 12:04:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 12:04:47,851 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 12:04:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 12:04:47,851 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 12:04:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 12:04:47,851 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 12:04:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 12:04:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 12:04:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 12:04:47,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 12:04:47,853 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 12:04:47,956 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 12:04:47,957 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 12:04:48,100 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 12:04:48,104 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 12:04:48,104 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 12:04:48,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:04:48 BoogieIcfgContainer [2022-12-12 12:04:48,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 12:04:48,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 12:04:48,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 12:04:48,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 12:04:48,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 12:04:47" (1/3) ... [2022-12-12 12:04:48,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e1539d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:04:48, skipping insertion in model container [2022-12-12 12:04:48,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:04:47" (2/3) ... [2022-12-12 12:04:48,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e1539d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:04:48, skipping insertion in model container [2022-12-12 12:04:48,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:04:48" (3/3) ... [2022-12-12 12:04:48,112 INFO L112 eAbstractionObserver]: Analyzing ICFG safe030_tso.i [2022-12-12 12:04:48,124 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 12:04:48,124 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 12:04:48,124 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 12:04:48,157 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 12:04:48,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2022-12-12 12:04:48,213 INFO L130 PetriNetUnfolder]: 2/80 cut-off events. [2022-12-12 12:04:48,213 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 12:04:48,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-12-12 12:04:48,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2022-12-12 12:04:48,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2022-12-12 12:04:48,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 12:04:48,241 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;@74c8d271, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 12:04:48,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 12:04:48,276 INFO L130 PetriNetUnfolder]: 1/67 cut-off events. [2022-12-12 12:04:48,276 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 12:04:48,277 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:48,277 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:48,278 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 12:04:48,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:48,283 INFO L85 PathProgramCache]: Analyzing trace with hash -999411593, now seen corresponding path program 1 times [2022-12-12 12:04:48,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:48,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257988507] [2022-12-12 12:04:48,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:48,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:48,777 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 12:04:48,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:48,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257988507] [2022-12-12 12:04:48,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257988507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:48,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:48,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:04:48,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094150919] [2022-12-12 12:04:48,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:48,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:04:48,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:48,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:04:48,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:04:48,805 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 83 [2022-12-12 12:04:48,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 145 flow. Second operand has 7 states, 7 states have (on average 62.714285714285715) internal successors, (439), 7 states have internal predecessors, (439), 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 12:04:48,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:48,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 83 [2022-12-12 12:04:48,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:49,089 INFO L130 PetriNetUnfolder]: 579/1291 cut-off events. [2022-12-12 12:04:49,090 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-12-12 12:04:49,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2263 conditions, 1291 events. 579/1291 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8076 event pairs, 29 based on Foata normal form. 48/1295 useless extension candidates. Maximal degree in co-relation 2231. Up to 289 conditions per place. [2022-12-12 12:04:49,100 INFO L137 encePairwiseOnDemand]: 71/83 looper letters, 27 selfloop transitions, 9 changer transitions 62/147 dead transitions. [2022-12-12 12:04:49,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 147 transitions, 508 flow [2022-12-12 12:04:49,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 12:04:49,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 12:04:49,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 897 transitions. [2022-12-12 12:04:49,120 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8313253012048193 [2022-12-12 12:04:49,125 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2022-12-12 12:04:49,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 147 transitions, 508 flow [2022-12-12 12:04:49,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 147 transitions, 494 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-12 12:04:49,138 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 147 transitions, 494 flow [2022-12-12 12:04:49,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.714285714285715) internal successors, (439), 7 states have internal predecessors, (439), 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 12:04:49,138 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:49,139 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:49,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 12:04:49,139 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 12:04:49,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:49,141 INFO L85 PathProgramCache]: Analyzing trace with hash 35008376, now seen corresponding path program 1 times [2022-12-12 12:04:49,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:49,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997598496] [2022-12-12 12:04:49,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:49,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:04:49,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:49,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997598496] [2022-12-12 12:04:49,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997598496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:49,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:49,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:04:49,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993689847] [2022-12-12 12:04:49,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:49,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:04:49,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:49,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:04:49,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:04:49,420 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 83 [2022-12-12 12:04:49,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 147 transitions, 494 flow. Second operand has 7 states, 7 states have (on average 62.857142857142854) internal successors, (440), 7 states have internal predecessors, (440), 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 12:04:49,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:49,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 83 [2022-12-12 12:04:49,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:49,722 INFO L130 PetriNetUnfolder]: 841/1870 cut-off events. [2022-12-12 12:04:49,722 INFO L131 PetriNetUnfolder]: For 68/404 co-relation queries the response was YES. [2022-12-12 12:04:49,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4655 conditions, 1870 events. 841/1870 cut-off events. For 68/404 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 12755 event pairs, 26 based on Foata normal form. 51/1888 useless extension candidates. Maximal degree in co-relation 4624. Up to 418 conditions per place. [2022-12-12 12:04:49,731 INFO L137 encePairwiseOnDemand]: 71/83 looper letters, 35 selfloop transitions, 18 changer transitions 237/339 dead transitions. [2022-12-12 12:04:49,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 339 transitions, 1850 flow [2022-12-12 12:04:49,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 12:04:49,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 12:04:49,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 895 transitions. [2022-12-12 12:04:49,733 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8294717330861909 [2022-12-12 12:04:49,733 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 21 predicate places. [2022-12-12 12:04:49,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 339 transitions, 1850 flow [2022-12-12 12:04:49,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 339 transitions, 1844 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-12 12:04:49,738 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 339 transitions, 1844 flow [2022-12-12 12:04:49,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.857142857142854) internal successors, (440), 7 states have internal predecessors, (440), 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 12:04:49,739 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:49,739 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:49,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 12:04:49,739 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 12:04:49,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:49,740 INFO L85 PathProgramCache]: Analyzing trace with hash -218147049, now seen corresponding path program 1 times [2022-12-12 12:04:49,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:49,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991253711] [2022-12-12 12:04:49,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:49,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:49,919 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 12:04:49,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:49,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991253711] [2022-12-12 12:04:49,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991253711] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:49,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:49,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:04:49,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713446532] [2022-12-12 12:04:49,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:49,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:04:49,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:49,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:04:49,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:04:49,922 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 83 [2022-12-12 12:04:49,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 339 transitions, 1844 flow. Second operand has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 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 12:04:49,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:49,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 83 [2022-12-12 12:04:49,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:50,296 INFO L130 PetriNetUnfolder]: 1224/2847 cut-off events. [2022-12-12 12:04:50,296 INFO L131 PetriNetUnfolder]: For 220/1534 co-relation queries the response was YES. [2022-12-12 12:04:50,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8961 conditions, 2847 events. 1224/2847 cut-off events. For 220/1534 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 22918 event pairs, 8 based on Foata normal form. 52/2876 useless extension candidates. Maximal degree in co-relation 8927. Up to 617 conditions per place. [2022-12-12 12:04:50,304 INFO L137 encePairwiseOnDemand]: 71/83 looper letters, 42 selfloop transitions, 25 changer transitions 587/703 dead transitions. [2022-12-12 12:04:50,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 703 transitions, 5340 flow [2022-12-12 12:04:50,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 12:04:50,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 12:04:50,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 893 transitions. [2022-12-12 12:04:50,306 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8276181649675626 [2022-12-12 12:04:50,306 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 33 predicate places. [2022-12-12 12:04:50,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 703 transitions, 5340 flow [2022-12-12 12:04:50,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 703 transitions, 5334 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-12 12:04:50,314 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 703 transitions, 5334 flow [2022-12-12 12:04:50,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 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 12:04:50,315 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:50,315 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:50,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 12:04:50,315 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 12:04:50,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:50,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1669951011, now seen corresponding path program 1 times [2022-12-12 12:04:50,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:50,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628758682] [2022-12-12 12:04:50,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:50,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:50,410 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 12:04:50,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:50,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628758682] [2022-12-12 12:04:50,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628758682] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:50,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:50,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 12:04:50,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93408840] [2022-12-12 12:04:50,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:50,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 12:04:50,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:50,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 12:04:50,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 12:04:50,413 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 83 [2022-12-12 12:04:50,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 703 transitions, 5334 flow. Second operand has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 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 12:04:50,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:50,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 83 [2022-12-12 12:04:50,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:50,797 INFO L130 PetriNetUnfolder]: 1416/3681 cut-off events. [2022-12-12 12:04:50,797 INFO L131 PetriNetUnfolder]: For 1285/3423 co-relation queries the response was YES. [2022-12-12 12:04:50,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12384 conditions, 3681 events. 1416/3681 cut-off events. For 1285/3423 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 34186 event pairs, 4 based on Foata normal form. 38/3689 useless extension candidates. Maximal degree in co-relation 12349. Up to 786 conditions per place. [2022-12-12 12:04:50,810 INFO L137 encePairwiseOnDemand]: 77/83 looper letters, 36 selfloop transitions, 8 changer transitions 670/792 dead transitions. [2022-12-12 12:04:50,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 792 transitions, 6886 flow [2022-12-12 12:04:50,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 12:04:50,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 12:04:50,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 634 transitions. [2022-12-12 12:04:50,812 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8487282463186078 [2022-12-12 12:04:50,812 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 41 predicate places. [2022-12-12 12:04:50,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 792 transitions, 6886 flow [2022-12-12 12:04:50,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 792 transitions, 6664 flow, removed 111 selfloop flow, removed 0 redundant places. [2022-12-12 12:04:50,823 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 792 transitions, 6664 flow [2022-12-12 12:04:50,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 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 12:04:50,824 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:50,824 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:50,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 12:04:50,824 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 12:04:50,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:50,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1748417155, now seen corresponding path program 1 times [2022-12-12 12:04:50,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:50,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616840572] [2022-12-12 12:04:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:50,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:50,922 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 12:04:50,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:50,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616840572] [2022-12-12 12:04:50,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616840572] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:50,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:50,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 12:04:50,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060300195] [2022-12-12 12:04:50,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:50,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 12:04:50,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:50,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 12:04:50,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 12:04:50,924 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 83 [2022-12-12 12:04:50,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 792 transitions, 6664 flow. Second operand has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 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 12:04:50,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:50,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 83 [2022-12-12 12:04:50,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:51,364 INFO L130 PetriNetUnfolder]: 1614/4617 cut-off events. [2022-12-12 12:04:51,365 INFO L131 PetriNetUnfolder]: For 3071/8164 co-relation queries the response was YES. [2022-12-12 12:04:51,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16657 conditions, 4617 events. 1614/4617 cut-off events. For 3071/8164 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 47833 event pairs, 21 based on Foata normal form. 39/4621 useless extension candidates. Maximal degree in co-relation 16621. Up to 916 conditions per place. [2022-12-12 12:04:51,383 INFO L137 encePairwiseOnDemand]: 77/83 looper letters, 44 selfloop transitions, 7 changer transitions 813/941 dead transitions. [2022-12-12 12:04:51,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 941 transitions, 9218 flow [2022-12-12 12:04:51,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 12:04:51,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 12:04:51,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 633 transitions. [2022-12-12 12:04:51,385 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8473895582329317 [2022-12-12 12:04:51,385 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 49 predicate places. [2022-12-12 12:04:51,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 941 transitions, 9218 flow [2022-12-12 12:04:51,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 941 transitions, 8940 flow, removed 139 selfloop flow, removed 0 redundant places. [2022-12-12 12:04:51,402 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 941 transitions, 8940 flow [2022-12-12 12:04:51,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 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 12:04:51,403 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:51,403 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:51,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 12:04:51,403 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 12:04:51,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:51,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1782473539, now seen corresponding path program 1 times [2022-12-12 12:04:51,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:51,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242298175] [2022-12-12 12:04:51,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:51,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:51,504 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 12:04:51,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:51,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242298175] [2022-12-12 12:04:51,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242298175] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:51,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:51,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 12:04:51,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883944396] [2022-12-12 12:04:51,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:51,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 12:04:51,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:51,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 12:04:51,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 12:04:51,507 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 83 [2022-12-12 12:04:51,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 941 transitions, 8940 flow. Second operand has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 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 12:04:51,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:51,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 83 [2022-12-12 12:04:51,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:52,163 INFO L130 PetriNetUnfolder]: 1811/5861 cut-off events. [2022-12-12 12:04:52,163 INFO L131 PetriNetUnfolder]: For 5715/8603 co-relation queries the response was YES. [2022-12-12 12:04:52,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22430 conditions, 5861 events. 1811/5861 cut-off events. For 5715/8603 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 67683 event pairs, 25 based on Foata normal form. 81/5919 useless extension candidates. Maximal degree in co-relation 22393. Up to 1044 conditions per place. [2022-12-12 12:04:52,185 INFO L137 encePairwiseOnDemand]: 77/83 looper letters, 52 selfloop transitions, 7 changer transitions 1038/1172 dead transitions. [2022-12-12 12:04:52,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 1172 transitions, 13166 flow [2022-12-12 12:04:52,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 12:04:52,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 12:04:52,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 632 transitions. [2022-12-12 12:04:52,189 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8460508701472557 [2022-12-12 12:04:52,189 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2022-12-12 12:04:52,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 1172 transitions, 13166 flow [2022-12-12 12:04:52,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 1172 transitions, 12884 flow, removed 141 selfloop flow, removed 0 redundant places. [2022-12-12 12:04:52,242 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 1172 transitions, 12884 flow [2022-12-12 12:04:52,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 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 12:04:52,243 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:52,243 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:52,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 12:04:52,243 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 12:04:52,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:52,244 INFO L85 PathProgramCache]: Analyzing trace with hash 904468982, now seen corresponding path program 1 times [2022-12-12 12:04:52,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:52,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405226647] [2022-12-12 12:04:52,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:52,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:52,335 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 12:04:52,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:52,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405226647] [2022-12-12 12:04:52,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405226647] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:52,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:52,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 12:04:52,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636830969] [2022-12-12 12:04:52,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:52,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 12:04:52,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:52,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 12:04:52,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 12:04:52,337 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 83 [2022-12-12 12:04:52,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 1172 transitions, 12884 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 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 12:04:52,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:52,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 83 [2022-12-12 12:04:52,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:53,198 INFO L130 PetriNetUnfolder]: 2084/6215 cut-off events. [2022-12-12 12:04:53,198 INFO L131 PetriNetUnfolder]: For 5073/6684 co-relation queries the response was YES. [2022-12-12 12:04:53,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20124 conditions, 6215 events. 2084/6215 cut-off events. For 5073/6684 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 68854 event pairs, 91 based on Foata normal form. 67/5930 useless extension candidates. Maximal degree in co-relation 20086. Up to 1419 conditions per place. [2022-12-12 12:04:53,232 INFO L137 encePairwiseOnDemand]: 73/83 looper letters, 42 selfloop transitions, 17 changer transitions 395/634 dead transitions. [2022-12-12 12:04:53,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 634 transitions, 6954 flow [2022-12-12 12:04:53,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 12:04:53,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 12:04:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 708 transitions. [2022-12-12 12:04:53,234 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8530120481927711 [2022-12-12 12:04:53,235 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 66 predicate places. [2022-12-12 12:04:53,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 634 transitions, 6954 flow [2022-12-12 12:04:53,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 634 transitions, 6906 flow, removed 23 selfloop flow, removed 1 redundant places. [2022-12-12 12:04:53,254 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 634 transitions, 6906 flow [2022-12-12 12:04:53,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 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 12:04:53,254 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:53,255 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:53,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 12:04:53,255 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 12:04:53,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:53,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1683886903, now seen corresponding path program 1 times [2022-12-12 12:04:53,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:53,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122647982] [2022-12-12 12:04:53,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:53,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:53,348 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 12:04:53,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:53,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122647982] [2022-12-12 12:04:53,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122647982] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:53,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:53,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:04:53,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926580512] [2022-12-12 12:04:53,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:53,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:04:53,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:53,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:04:53,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:04:53,350 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 83 [2022-12-12 12:04:53,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 634 transitions, 6906 flow. Second operand has 7 states, 7 states have (on average 67.57142857142857) internal successors, (473), 7 states have internal predecessors, (473), 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 12:04:53,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:53,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 83 [2022-12-12 12:04:53,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:53,773 INFO L130 PetriNetUnfolder]: 1212/3542 cut-off events. [2022-12-12 12:04:53,773 INFO L131 PetriNetUnfolder]: For 2610/4175 co-relation queries the response was YES. [2022-12-12 12:04:53,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10809 conditions, 3542 events. 1212/3542 cut-off events. For 2610/4175 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 35548 event pairs, 2 based on Foata normal form. 277/3625 useless extension candidates. Maximal degree in co-relation 10769. Up to 943 conditions per place. [2022-12-12 12:04:53,788 INFO L137 encePairwiseOnDemand]: 73/83 looper letters, 34 selfloop transitions, 33 changer transitions 195/349 dead transitions. [2022-12-12 12:04:53,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 349 transitions, 3444 flow [2022-12-12 12:04:53,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 12:04:53,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 12:04:53,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 921 transitions. [2022-12-12 12:04:53,790 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8535681186283596 [2022-12-12 12:04:53,791 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 68 predicate places. [2022-12-12 12:04:53,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 349 transitions, 3444 flow [2022-12-12 12:04:53,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 349 transitions, 2902 flow, removed 108 selfloop flow, removed 16 redundant places. [2022-12-12 12:04:53,799 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 349 transitions, 2902 flow [2022-12-12 12:04:53,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.57142857142857) internal successors, (473), 7 states have internal predecessors, (473), 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 12:04:53,800 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:04:53,800 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:53,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 12:04:53,800 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 12:04:53,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:04:53,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1596908086, now seen corresponding path program 1 times [2022-12-12 12:04:53,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:04:53,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385787108] [2022-12-12 12:04:53,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:04:53,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:04:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:04:53,902 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 12:04:53,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:04:53,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385787108] [2022-12-12 12:04:53,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385787108] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:04:53,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:04:53,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 12:04:53,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731805888] [2022-12-12 12:04:53,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:04:53,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 12:04:53,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:04:53,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 12:04:53,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-12 12:04:53,904 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 83 [2022-12-12 12:04:53,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 349 transitions, 2902 flow. Second operand has 8 states, 8 states have (on average 67.5) internal successors, (540), 8 states have internal predecessors, (540), 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 12:04:53,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:04:53,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 83 [2022-12-12 12:04:53,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:04:54,313 INFO L130 PetriNetUnfolder]: 1100/2991 cut-off events. [2022-12-12 12:04:54,313 INFO L131 PetriNetUnfolder]: For 1603/3569 co-relation queries the response was YES. [2022-12-12 12:04:54,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9836 conditions, 2991 events. 1100/2991 cut-off events. For 1603/3569 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 29689 event pairs, 2 based on Foata normal form. 286/3091 useless extension candidates. Maximal degree in co-relation 9795. Up to 637 conditions per place. [2022-12-12 12:04:54,326 INFO L137 encePairwiseOnDemand]: 73/83 looper letters, 0 selfloop transitions, 0 changer transitions 243/243 dead transitions. [2022-12-12 12:04:54,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 243 transitions, 1954 flow [2022-12-12 12:04:54,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 12:04:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 12:04:54,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1118 transitions. [2022-12-12 12:04:54,329 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8418674698795181 [2022-12-12 12:04:54,329 INFO L295 CegarLoopForPetriNet]: 77 programPoint places, 53 predicate places. [2022-12-12 12:04:54,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 243 transitions, 1954 flow [2022-12-12 12:04:54,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 243 transitions, 1780 flow, removed 39 selfloop flow, removed 10 redundant places. [2022-12-12 12:04:54,336 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 243 transitions, 1780 flow [2022-12-12 12:04:54,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.5) internal successors, (540), 8 states have internal predecessors, (540), 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 12:04:54,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 12:04:54,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 12:04:54,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 12:04:54,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 12:04:54,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 12:04:54,340 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:04:54,342 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 12:04:54,342 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 12:04:54,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 12:04:54 BasicIcfg [2022-12-12 12:04:54,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 12:04:54,347 INFO L158 Benchmark]: Toolchain (without parser) took 7126.82ms. Allocated memory was 204.5MB in the beginning and 672.1MB in the end (delta: 467.7MB). Free memory was 168.7MB in the beginning and 517.3MB in the end (delta: -348.6MB). Peak memory consumption was 120.6MB. Max. memory is 8.0GB. [2022-12-12 12:04:54,347 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 204.5MB. Free memory was 181.4MB in the beginning and 181.3MB in the end (delta: 70.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 12:04:54,348 INFO L158 Benchmark]: CACSL2BoogieTranslator took 478.36ms. Allocated memory is still 204.5MB. Free memory was 168.7MB in the beginning and 145.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-12 12:04:54,348 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.50ms. Allocated memory is still 204.5MB. Free memory was 145.6MB in the beginning and 143.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 12:04:54,348 INFO L158 Benchmark]: Boogie Preprocessor took 33.20ms. Allocated memory is still 204.5MB. Free memory was 143.5MB in the beginning and 141.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 12:04:54,348 INFO L158 Benchmark]: RCFGBuilder took 319.97ms. Allocated memory is still 204.5MB. Free memory was 141.9MB in the beginning and 128.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 12:04:54,349 INFO L158 Benchmark]: TraceAbstraction took 6238.53ms. Allocated memory was 204.5MB in the beginning and 672.1MB in the end (delta: 467.7MB). Free memory was 127.8MB in the beginning and 517.3MB in the end (delta: -389.5MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. [2022-12-12 12:04:54,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 204.5MB. Free memory was 181.4MB in the beginning and 181.3MB in the end (delta: 70.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 478.36ms. Allocated memory is still 204.5MB. Free memory was 168.7MB in the beginning and 145.6MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.50ms. Allocated memory is still 204.5MB. Free memory was 145.6MB in the beginning and 143.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.20ms. Allocated memory is still 204.5MB. Free memory was 143.5MB in the beginning and 141.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 319.97ms. Allocated memory is still 204.5MB. Free memory was 141.9MB in the beginning and 128.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 6238.53ms. Allocated memory was 204.5MB in the beginning and 672.1MB in the end (delta: 467.7MB). Free memory was 127.8MB in the beginning and 517.3MB in the end (delta: -389.5MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.1s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 462 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 462 mSDsluCounter, 630 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 466 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 566 IncrementalHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 164 mSDtfsCounter, 566 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12884occurred in iteration=6, InterpolantAutomatonStates: 105, 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, 9 MinimizatonAttempts, 1572 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 477 NumberOfCodeBlocks, 477 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 468 ConstructedInterpolants, 0 QuantifiedInterpolants, 1706 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 12:04:54,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...