/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix046.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 21:38:01,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 21:38:01,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 21:38:01,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 21:38:01,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 21:38:01,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 21:38:01,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 21:38:01,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 21:38:01,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 21:38:01,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 21:38:01,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 21:38:01,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 21:38:01,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 21:38:01,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 21:38:01,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 21:38:01,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 21:38:01,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 21:38:01,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 21:38:01,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 21:38:01,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 21:38:01,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 21:38:01,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 21:38:01,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 21:38:01,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 21:38:01,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 21:38:01,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 21:38:01,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 21:38:01,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 21:38:01,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 21:38:01,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 21:38:01,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 21:38:01,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 21:38:01,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 21:38:01,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 21:38:01,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 21:38:01,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 21:38:01,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 21:38:01,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 21:38:01,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 21:38:01,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 21:38:01,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 21:38:01,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 21:38:01,328 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 21:38:01,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 21:38:01,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 21:38:01,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 21:38:01,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 21:38:01,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 21:38:01,331 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 21:38:01,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 21:38:01,331 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 21:38:01,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 21:38:01,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 21:38:01,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 21:38:01,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 21:38:01,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 21:38:01,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 21:38:01,333 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 21:38:01,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 21:38:01,333 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 21:38:01,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 21:38:01,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 21:38:01,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 21:38:01,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 21:38:01,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 21:38:01,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 21:38:01,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 21:38:01,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 21:38:01,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 21:38:01,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 21:38:01,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 21:38:01,336 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 21:38:01,336 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 21:38:01,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 21:38:01,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 21:38:01,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 21:38:01,681 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 21:38:01,682 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 21:38:01,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix046.oepc.i [2022-12-12 21:38:02,818 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 21:38:03,079 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 21:38:03,080 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix046.oepc.i [2022-12-12 21:38:03,091 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b289425f/7444aa7434b149d798f882ed34da046d/FLAG3abcb2e5e [2022-12-12 21:38:03,108 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b289425f/7444aa7434b149d798f882ed34da046d [2022-12-12 21:38:03,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 21:38:03,114 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 21:38:03,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 21:38:03,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 21:38:03,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 21:38:03,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 09:38:03" (1/1) ... [2022-12-12 21:38:03,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db5869a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:38:03, skipping insertion in model container [2022-12-12 21:38:03,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 09:38:03" (1/1) ... [2022-12-12 21:38:03,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 21:38:03,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 21:38:03,290 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/mix046.oepc.i[945,958] [2022-12-12 21:38:03,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,468 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,505 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,506 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,508 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,508 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,508 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,529 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,529 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 21:38:03,544 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 21:38:03,555 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/mix046.oepc.i[945,958] [2022-12-12 21:38:03,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,599 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,599 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,599 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,602 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,602 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,602 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,602 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,611 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,614 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:38:03,642 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:38:03,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 21:38:03,686 INFO L208 MainTranslator]: Completed translation [2022-12-12 21:38:03,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:38:03 WrapperNode [2022-12-12 21:38:03,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 21:38:03,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 21:38:03,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 21:38:03,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 21:38:03,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:38:03" (1/1) ... [2022-12-12 21:38:03,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:38:03" (1/1) ... [2022-12-12 21:38:03,768 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2022-12-12 21:38:03,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 21:38:03,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 21:38:03,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 21:38:03,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 21:38:03,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:38:03" (1/1) ... [2022-12-12 21:38:03,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:38:03" (1/1) ... [2022-12-12 21:38:03,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:38:03" (1/1) ... [2022-12-12 21:38:03,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:38:03" (1/1) ... [2022-12-12 21:38:03,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:38:03" (1/1) ... [2022-12-12 21:38:03,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:38:03" (1/1) ... [2022-12-12 21:38:03,807 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:38:03" (1/1) ... [2022-12-12 21:38:03,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:38:03" (1/1) ... [2022-12-12 21:38:03,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 21:38:03,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 21:38:03,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 21:38:03,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 21:38:03,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:38:03" (1/1) ... [2022-12-12 21:38:03,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 21:38:03,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 21:38:03,861 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 21:38:03,884 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 21:38:03,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 21:38:03,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 21:38:03,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 21:38:03,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 21:38:03,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 21:38:03,902 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 21:38:03,902 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 21:38:03,902 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 21:38:03,902 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 21:38:03,902 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 21:38:03,903 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 21:38:03,903 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-12 21:38:03,903 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-12 21:38:03,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 21:38:03,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 21:38:03,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 21:38:03,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 21:38:03,905 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 21:38:04,035 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 21:38:04,037 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 21:38:04,427 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 21:38:04,520 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 21:38:04,520 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 21:38:04,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 09:38:04 BoogieIcfgContainer [2022-12-12 21:38:04,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 21:38:04,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 21:38:04,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 21:38:04,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 21:38:04,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 09:38:03" (1/3) ... [2022-12-12 21:38:04,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184b1475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 09:38:04, skipping insertion in model container [2022-12-12 21:38:04,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:38:03" (2/3) ... [2022-12-12 21:38:04,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184b1475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 09:38:04, skipping insertion in model container [2022-12-12 21:38:04,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 09:38:04" (3/3) ... [2022-12-12 21:38:04,536 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.oepc.i [2022-12-12 21:38:04,551 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 21:38:04,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-12 21:38:04,552 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 21:38:04,675 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 21:38:04,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 132 transitions, 284 flow [2022-12-12 21:38:04,794 INFO L130 PetriNetUnfolder]: 2/128 cut-off events. [2022-12-12 21:38:04,794 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:38:04,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 2/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-12 21:38:04,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 132 transitions, 284 flow [2022-12-12 21:38:04,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 128 transitions, 268 flow [2022-12-12 21:38:04,816 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 21:38:04,840 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 128 transitions, 268 flow [2022-12-12 21:38:04,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 128 transitions, 268 flow [2022-12-12 21:38:04,895 INFO L130 PetriNetUnfolder]: 2/128 cut-off events. [2022-12-12 21:38:04,895 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:38:04,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 2/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-12 21:38:04,901 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 128 transitions, 268 flow [2022-12-12 21:38:04,901 INFO L226 LiptonReduction]: Number of co-enabled transitions 3270 [2022-12-12 21:38:11,568 INFO L241 LiptonReduction]: Total number of compositions: 101 [2022-12-12 21:38:11,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 21:38:11,589 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;@1ac48469, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 21:38:11,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-12 21:38:11,593 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-12 21:38:11,593 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:38:11,593 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:38:11,594 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-12 21:38:11,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:38:11,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:38:11,599 INFO L85 PathProgramCache]: Analyzing trace with hash 592657, now seen corresponding path program 1 times [2022-12-12 21:38:11,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:38:11,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47367310] [2022-12-12 21:38:11,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:38:11,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:38:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:38:11,995 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 21:38:11,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:38:11,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47367310] [2022-12-12 21:38:11,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47367310] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:38:11,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:38:11,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 21:38:11,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966609877] [2022-12-12 21:38:11,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:38:12,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:38:12,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:38:12,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:38:12,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:38:12,025 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 84 [2022-12-12 21:38:12,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 21:38:12,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:38:12,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 84 [2022-12-12 21:38:12,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:38:21,337 INFO L130 PetriNetUnfolder]: 78140/113356 cut-off events. [2022-12-12 21:38:21,337 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2022-12-12 21:38:21,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216370 conditions, 113356 events. 78140/113356 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 5291. Compared 934591 event pairs, 11700 based on Foata normal form. 0/71018 useless extension candidates. Maximal degree in co-relation 216358. Up to 86085 conditions per place. [2022-12-12 21:38:21,901 INFO L137 encePairwiseOnDemand]: 79/84 looper letters, 50 selfloop transitions, 2 changer transitions 71/139 dead transitions. [2022-12-12 21:38:21,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 139 transitions, 543 flow [2022-12-12 21:38:21,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:38:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:38:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2022-12-12 21:38:21,916 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7063492063492064 [2022-12-12 21:38:21,923 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, 0 predicate places. [2022-12-12 21:38:21,923 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 139 transitions, 543 flow [2022-12-12 21:38:22,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 68 transitions, 261 flow [2022-12-12 21:38:22,098 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 68 transitions, 261 flow [2022-12-12 21:38:22,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 21:38:22,098 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:38:22,098 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:38:22,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 21:38:22,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:38:22,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:38:22,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1090959398, now seen corresponding path program 1 times [2022-12-12 21:38:22,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:38:22,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763597693] [2022-12-12 21:38:22,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:38:22,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:38:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:38:22,436 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 21:38:22,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:38:22,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763597693] [2022-12-12 21:38:22,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763597693] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:38:22,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:38:22,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 21:38:22,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445989207] [2022-12-12 21:38:22,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:38:22,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:38:22,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:38:22,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:38:22,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:38:22,439 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 84 [2022-12-12 21:38:22,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 68 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 21:38:22,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:38:22,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 84 [2022-12-12 21:38:22,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:38:27,966 INFO L130 PetriNetUnfolder]: 50587/70325 cut-off events. [2022-12-12 21:38:27,967 INFO L131 PetriNetUnfolder]: For 10276/10276 co-relation queries the response was YES. [2022-12-12 21:38:28,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193116 conditions, 70325 events. 50587/70325 cut-off events. For 10276/10276 co-relation queries the response was YES. Maximal size of possible extension queue 2382. Compared 465014 event pairs, 7213 based on Foata normal form. 1540/59287 useless extension candidates. Maximal degree in co-relation 193101. Up to 47818 conditions per place. [2022-12-12 21:38:28,593 INFO L137 encePairwiseOnDemand]: 74/84 looper letters, 91 selfloop transitions, 13 changer transitions 2/117 dead transitions. [2022-12-12 21:38:28,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 117 transitions, 671 flow [2022-12-12 21:38:28,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:38:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:38:28,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2022-12-12 21:38:28,598 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2022-12-12 21:38:28,599 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -34 predicate places. [2022-12-12 21:38:28,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 117 transitions, 671 flow [2022-12-12 21:38:28,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 115 transitions, 663 flow [2022-12-12 21:38:28,837 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 115 transitions, 663 flow [2022-12-12 21:38:28,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 21:38:28,837 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:38:28,837 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:38:28,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 21:38:28,837 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:38:28,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:38:28,838 INFO L85 PathProgramCache]: Analyzing trace with hash 539997974, now seen corresponding path program 1 times [2022-12-12 21:38:28,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:38:28,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903195687] [2022-12-12 21:38:28,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:38:28,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:38:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:38:29,033 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 21:38:29,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:38:29,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903195687] [2022-12-12 21:38:29,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903195687] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:38:29,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:38:29,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:38:29,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429968666] [2022-12-12 21:38:29,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:38:29,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:38:29,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:38:29,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:38:29,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:38:29,037 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 84 [2022-12-12 21:38:29,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 115 transitions, 663 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 21:38:29,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:38:29,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 84 [2022-12-12 21:38:29,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:38:32,752 INFO L130 PetriNetUnfolder]: 36517/51357 cut-off events. [2022-12-12 21:38:32,753 INFO L131 PetriNetUnfolder]: For 5596/5596 co-relation queries the response was YES. [2022-12-12 21:38:32,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192295 conditions, 51357 events. 36517/51357 cut-off events. For 5596/5596 co-relation queries the response was YES. Maximal size of possible extension queue 1722. Compared 327425 event pairs, 2031 based on Foata normal form. 588/42753 useless extension candidates. Maximal degree in co-relation 192277. Up to 36814 conditions per place. [2022-12-12 21:38:33,036 INFO L137 encePairwiseOnDemand]: 76/84 looper letters, 144 selfloop transitions, 10 changer transitions 4/169 dead transitions. [2022-12-12 21:38:33,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 169 transitions, 1291 flow [2022-12-12 21:38:33,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:38:33,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:38:33,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2022-12-12 21:38:33,039 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2022-12-12 21:38:33,039 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -32 predicate places. [2022-12-12 21:38:33,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 169 transitions, 1291 flow [2022-12-12 21:38:33,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 165 transitions, 1259 flow [2022-12-12 21:38:33,200 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 165 transitions, 1259 flow [2022-12-12 21:38:33,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 21:38:33,200 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:38:33,200 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:38:33,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 21:38:33,200 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:38:33,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:38:33,200 INFO L85 PathProgramCache]: Analyzing trace with hash -439926117, now seen corresponding path program 1 times [2022-12-12 21:38:33,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:38:33,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185973212] [2022-12-12 21:38:33,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:38:33,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:38:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:38:33,309 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 21:38:33,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:38:33,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185973212] [2022-12-12 21:38:33,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185973212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:38:33,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:38:33,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 21:38:33,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295116632] [2022-12-12 21:38:33,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:38:33,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:38:33,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:38:33,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:38:33,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:38:33,312 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 84 [2022-12-12 21:38:33,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 165 transitions, 1259 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 21:38:33,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:38:33,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 84 [2022-12-12 21:38:33,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:38:36,770 INFO L130 PetriNetUnfolder]: 32329/45567 cut-off events. [2022-12-12 21:38:36,770 INFO L131 PetriNetUnfolder]: For 15565/15565 co-relation queries the response was YES. [2022-12-12 21:38:36,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209112 conditions, 45567 events. 32329/45567 cut-off events. For 15565/15565 co-relation queries the response was YES. Maximal size of possible extension queue 1538. Compared 286788 event pairs, 1500 based on Foata normal form. 60/38223 useless extension candidates. Maximal degree in co-relation 209091. Up to 37991 conditions per place. [2022-12-12 21:38:37,199 INFO L137 encePairwiseOnDemand]: 80/84 looper letters, 193 selfloop transitions, 10 changer transitions 0/224 dead transitions. [2022-12-12 21:38:37,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 224 transitions, 2149 flow [2022-12-12 21:38:37,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:38:37,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:38:37,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2022-12-12 21:38:37,201 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2022-12-12 21:38:37,202 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -31 predicate places. [2022-12-12 21:38:37,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 224 transitions, 2149 flow [2022-12-12 21:38:37,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 224 transitions, 2149 flow [2022-12-12 21:38:37,409 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 224 transitions, 2149 flow [2022-12-12 21:38:37,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 21:38:37,409 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:38:37,409 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:38:37,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 21:38:37,409 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:38:37,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:38:37,410 INFO L85 PathProgramCache]: Analyzing trace with hash -752954665, now seen corresponding path program 1 times [2022-12-12 21:38:37,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:38:37,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056474606] [2022-12-12 21:38:37,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:38:37,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:38:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:38:37,613 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 21:38:37,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:38:37,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056474606] [2022-12-12 21:38:37,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056474606] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:38:37,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:38:37,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:38:37,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053933936] [2022-12-12 21:38:37,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:38:37,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:38:37,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:38:37,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:38:37,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:38:37,619 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 84 [2022-12-12 21:38:37,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 224 transitions, 2149 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 21:38:37,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:38:37,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 84 [2022-12-12 21:38:37,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:38:45,075 INFO L130 PetriNetUnfolder]: 65335/89559 cut-off events. [2022-12-12 21:38:45,075 INFO L131 PetriNetUnfolder]: For 143525/145601 co-relation queries the response was YES. [2022-12-12 21:38:45,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462895 conditions, 89559 events. 65335/89559 cut-off events. For 143525/145601 co-relation queries the response was YES. Maximal size of possible extension queue 3169. Compared 576411 event pairs, 8510 based on Foata normal form. 5740/81934 useless extension candidates. Maximal degree in co-relation 462871. Up to 69160 conditions per place. [2022-12-12 21:38:45,771 INFO L137 encePairwiseOnDemand]: 69/84 looper letters, 272 selfloop transitions, 61 changer transitions 269/626 dead transitions. [2022-12-12 21:38:45,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 626 transitions, 7307 flow [2022-12-12 21:38:45,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 21:38:45,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 21:38:45,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2022-12-12 21:38:45,772 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2022-12-12 21:38:45,773 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -27 predicate places. [2022-12-12 21:38:45,773 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 626 transitions, 7307 flow [2022-12-12 21:38:46,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 357 transitions, 4143 flow [2022-12-12 21:38:46,087 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 357 transitions, 4143 flow [2022-12-12 21:38:46,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 21:38:46,087 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:38:46,087 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:38:46,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 21:38:46,088 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:38:46,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:38:46,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1601711926, now seen corresponding path program 1 times [2022-12-12 21:38:46,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:38:46,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119435819] [2022-12-12 21:38:46,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:38:46,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:38:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:38:46,254 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 21:38:46,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:38:46,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119435819] [2022-12-12 21:38:46,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119435819] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:38:46,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:38:46,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:38:46,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910233223] [2022-12-12 21:38:46,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:38:46,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:38:46,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:38:46,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:38:46,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:38:46,259 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 84 [2022-12-12 21:38:46,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 357 transitions, 4143 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 21:38:46,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:38:46,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 84 [2022-12-12 21:38:46,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:38:56,939 INFO L130 PetriNetUnfolder]: 81027/111017 cut-off events. [2022-12-12 21:38:56,939 INFO L131 PetriNetUnfolder]: For 223818/228624 co-relation queries the response was YES. [2022-12-12 21:38:57,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672032 conditions, 111017 events. 81027/111017 cut-off events. For 223818/228624 co-relation queries the response was YES. Maximal size of possible extension queue 3853. Compared 734708 event pairs, 10353 based on Foata normal form. 3121/96764 useless extension candidates. Maximal degree in co-relation 672005. Up to 98389 conditions per place. [2022-12-12 21:38:57,850 INFO L137 encePairwiseOnDemand]: 75/84 looper letters, 484 selfloop transitions, 41 changer transitions 19/559 dead transitions. [2022-12-12 21:38:57,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 559 transitions, 7625 flow [2022-12-12 21:38:57,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:38:57,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:38:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2022-12-12 21:38:57,852 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2022-12-12 21:38:57,852 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -26 predicate places. [2022-12-12 21:38:57,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 559 transitions, 7625 flow [2022-12-12 21:38:58,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 540 transitions, 7359 flow [2022-12-12 21:38:58,256 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 540 transitions, 7359 flow [2022-12-12 21:38:58,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 21:38:58,257 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:38:58,257 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:38:58,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 21:38:58,257 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:38:58,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:38:58,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1867521863, now seen corresponding path program 1 times [2022-12-12 21:38:58,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:38:58,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862045349] [2022-12-12 21:38:58,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:38:58,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:38:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:38:58,383 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 21:38:58,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:38:58,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862045349] [2022-12-12 21:38:58,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862045349] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:38:58,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:38:58,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:38:58,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495861477] [2022-12-12 21:38:58,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:38:58,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:38:58,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:38:58,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:38:58,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:38:58,385 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 84 [2022-12-12 21:38:58,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 540 transitions, 7359 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 21:38:58,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:38:58,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 84 [2022-12-12 21:38:58,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:39:15,539 INFO L130 PetriNetUnfolder]: 116328/160192 cut-off events. [2022-12-12 21:39:15,540 INFO L131 PetriNetUnfolder]: For 477516/484649 co-relation queries the response was YES. [2022-12-12 21:39:16,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093260 conditions, 160192 events. 116328/160192 cut-off events. For 477516/484649 co-relation queries the response was YES. Maximal size of possible extension queue 6020. Compared 1128500 event pairs, 15229 based on Foata normal form. 3720/137919 useless extension candidates. Maximal degree in co-relation 1093230. Up to 143947 conditions per place. [2022-12-12 21:39:16,532 INFO L137 encePairwiseOnDemand]: 81/84 looper letters, 621 selfloop transitions, 18 changer transitions 116/789 dead transitions. [2022-12-12 21:39:16,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 789 transitions, 12379 flow [2022-12-12 21:39:16,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:39:16,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:39:16,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2022-12-12 21:39:16,534 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2022-12-12 21:39:16,535 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -24 predicate places. [2022-12-12 21:39:16,535 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 789 transitions, 12379 flow [2022-12-12 21:39:16,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 673 transitions, 10523 flow [2022-12-12 21:39:16,982 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 673 transitions, 10523 flow [2022-12-12 21:39:16,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 21:39:16,982 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:39:16,983 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:39:16,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 21:39:16,983 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:39:16,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:39:16,984 INFO L85 PathProgramCache]: Analyzing trace with hash 61232639, now seen corresponding path program 2 times [2022-12-12 21:39:16,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:39:16,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93915844] [2022-12-12 21:39:16,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:39:16,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:39:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:39:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:39:17,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:39:17,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93915844] [2022-12-12 21:39:17,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93915844] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:39:17,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:39:17,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 21:39:17,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371655438] [2022-12-12 21:39:17,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:39:17,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 21:39:17,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:39:17,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 21:39:17,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 21:39:17,174 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 84 [2022-12-12 21:39:17,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 673 transitions, 10523 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 21:39:17,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:39:17,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 84 [2022-12-12 21:39:17,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:39:34,509 INFO L130 PetriNetUnfolder]: 88866/130858 cut-off events. [2022-12-12 21:39:34,510 INFO L131 PetriNetUnfolder]: For 455800/466084 co-relation queries the response was YES. [2022-12-12 21:39:34,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1002295 conditions, 130858 events. 88866/130858 cut-off events. For 455800/466084 co-relation queries the response was YES. Maximal size of possible extension queue 6213. Compared 1049887 event pairs, 6837 based on Foata normal form. 12494/122022 useless extension candidates. Maximal degree in co-relation 1002262. Up to 116608 conditions per place. [2022-12-12 21:39:35,239 INFO L137 encePairwiseOnDemand]: 69/84 looper letters, 497 selfloop transitions, 205 changer transitions 698/1431 dead transitions. [2022-12-12 21:39:35,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 1431 transitions, 25338 flow [2022-12-12 21:39:35,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 21:39:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 21:39:35,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2022-12-12 21:39:35,241 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2022-12-12 21:39:35,241 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -19 predicate places. [2022-12-12 21:39:35,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 1431 transitions, 25338 flow [2022-12-12 21:39:35,642 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 733 transitions, 12875 flow [2022-12-12 21:39:35,643 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 733 transitions, 12875 flow [2022-12-12 21:39:35,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 21:39:35,643 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:39:35,643 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] [2022-12-12 21:39:35,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 21:39:35,643 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:39:35,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:39:35,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1041582253, now seen corresponding path program 1 times [2022-12-12 21:39:35,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:39:35,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985067329] [2022-12-12 21:39:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:39:35,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:39:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:39:35,930 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 21:39:35,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:39:35,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985067329] [2022-12-12 21:39:35,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985067329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:39:35,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:39:35,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 21:39:35,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543678858] [2022-12-12 21:39:35,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:39:35,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 21:39:35,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:39:35,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 21:39:35,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-12 21:39:35,934 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 84 [2022-12-12 21:39:35,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 733 transitions, 12875 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 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 21:39:35,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:39:35,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 84 [2022-12-12 21:39:35,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:39:44,088 INFO L130 PetriNetUnfolder]: 33384/55158 cut-off events. [2022-12-12 21:39:44,088 INFO L131 PetriNetUnfolder]: For 228430/233780 co-relation queries the response was YES. [2022-12-12 21:39:44,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469919 conditions, 55158 events. 33384/55158 cut-off events. For 228430/233780 co-relation queries the response was YES. Maximal size of possible extension queue 2699. Compared 480621 event pairs, 796 based on Foata normal form. 6536/53417 useless extension candidates. Maximal degree in co-relation 469883. Up to 47478 conditions per place. [2022-12-12 21:39:44,410 INFO L137 encePairwiseOnDemand]: 69/84 looper letters, 422 selfloop transitions, 253 changer transitions 342/1046 dead transitions. [2022-12-12 21:39:44,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 1046 transitions, 20407 flow [2022-12-12 21:39:44,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 21:39:44,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 21:39:44,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2022-12-12 21:39:44,412 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.413265306122449 [2022-12-12 21:39:44,412 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -15 predicate places. [2022-12-12 21:39:44,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 1046 transitions, 20407 flow [2022-12-12 21:39:44,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 704 transitions, 13677 flow [2022-12-12 21:39:44,576 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 704 transitions, 13677 flow [2022-12-12 21:39:44,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 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 21:39:44,576 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:39:44,576 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] [2022-12-12 21:39:44,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 21:39:44,576 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:39:44,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:39:44,577 INFO L85 PathProgramCache]: Analyzing trace with hash 126885591, now seen corresponding path program 1 times [2022-12-12 21:39:44,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:39:44,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952445299] [2022-12-12 21:39:44,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:39:44,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:39:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:39:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 21:39:45,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:39:45,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952445299] [2022-12-12 21:39:45,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952445299] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:39:45,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:39:45,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 21:39:45,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031186288] [2022-12-12 21:39:45,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:39:45,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 21:39:45,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:39:45,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 21:39:45,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-12 21:39:45,650 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 84 [2022-12-12 21:39:45,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 704 transitions, 13677 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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 21:39:45,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:39:45,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 84 [2022-12-12 21:39:45,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:39:55,363 INFO L130 PetriNetUnfolder]: 39468/66680 cut-off events. [2022-12-12 21:39:55,364 INFO L131 PetriNetUnfolder]: For 286724/292154 co-relation queries the response was YES. [2022-12-12 21:39:55,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614483 conditions, 66680 events. 39468/66680 cut-off events. For 286724/292154 co-relation queries the response was YES. Maximal size of possible extension queue 2787. Compared 606469 event pairs, 1677 based on Foata normal form. 1501/57989 useless extension candidates. Maximal degree in co-relation 614444. Up to 57009 conditions per place. [2022-12-12 21:39:55,949 INFO L137 encePairwiseOnDemand]: 69/84 looper letters, 996 selfloop transitions, 199 changer transitions 308/1526 dead transitions. [2022-12-12 21:39:55,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 1526 transitions, 32745 flow [2022-12-12 21:39:55,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 21:39:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 21:39:55,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 313 transitions. [2022-12-12 21:39:55,951 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.414021164021164 [2022-12-12 21:39:55,951 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -9 predicate places. [2022-12-12 21:39:55,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 1526 transitions, 32745 flow [2022-12-12 21:39:56,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 1218 transitions, 26108 flow [2022-12-12 21:39:56,189 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 1218 transitions, 26108 flow [2022-12-12 21:39:56,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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 21:39:56,190 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:39:56,190 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] [2022-12-12 21:39:56,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 21:39:56,190 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:39:56,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:39:56,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1697685789, now seen corresponding path program 1 times [2022-12-12 21:39:56,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:39:56,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555580866] [2022-12-12 21:39:56,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:39:56,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:39:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:39:57,707 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 21:39:57,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:39:57,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555580866] [2022-12-12 21:39:57,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555580866] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:39:57,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:39:57,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 21:39:57,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374790673] [2022-12-12 21:39:57,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:39:57,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 21:39:57,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:39:57,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 21:39:57,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-12 21:39:57,709 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 84 [2022-12-12 21:39:57,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 1218 transitions, 26108 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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 21:39:57,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:39:57,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 84 [2022-12-12 21:39:57,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:40:20,218 INFO L130 PetriNetUnfolder]: 55735/100087 cut-off events. [2022-12-12 21:40:20,218 INFO L131 PetriNetUnfolder]: For 397981/402652 co-relation queries the response was YES. [2022-12-12 21:40:20,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998475 conditions, 100087 events. 55735/100087 cut-off events. For 397981/402652 co-relation queries the response was YES. Maximal size of possible extension queue 6237. Compared 1050617 event pairs, 3104 based on Foata normal form. 1494/85071 useless extension candidates. Maximal degree in co-relation 998433. Up to 90445 conditions per place. [2022-12-12 21:40:21,292 INFO L137 encePairwiseOnDemand]: 71/84 looper letters, 1601 selfloop transitions, 333 changer transitions 314/2271 dead transitions. [2022-12-12 21:40:21,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 2271 transitions, 53543 flow [2022-12-12 21:40:21,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 21:40:21,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 21:40:21,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 380 transitions. [2022-12-12 21:40:21,295 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2022-12-12 21:40:21,296 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2022-12-12 21:40:21,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 2271 transitions, 53543 flow [2022-12-12 21:40:21,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 1957 transitions, 46147 flow [2022-12-12 21:40:21,708 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 1957 transitions, 46147 flow [2022-12-12 21:40:21,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 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 21:40:21,708 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:40:21,709 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] [2022-12-12 21:40:21,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 21:40:21,709 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:40:21,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:40:21,709 INFO L85 PathProgramCache]: Analyzing trace with hash -79403933, now seen corresponding path program 2 times [2022-12-12 21:40:21,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:40:21,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286182619] [2022-12-12 21:40:21,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:40:21,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:40:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:40:21,953 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 21:40:21,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:40:21,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286182619] [2022-12-12 21:40:21,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286182619] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:40:21,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:40:21,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 21:40:21,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011191720] [2022-12-12 21:40:21,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:40:21,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 21:40:21,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:40:21,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 21:40:21,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-12 21:40:21,955 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 84 [2022-12-12 21:40:21,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 1957 transitions, 46147 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 21:40:21,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:40:21,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 84 [2022-12-12 21:40:21,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:40:45,933 INFO L130 PetriNetUnfolder]: 40085/71944 cut-off events. [2022-12-12 21:40:45,934 INFO L131 PetriNetUnfolder]: For 373405/379609 co-relation queries the response was YES. [2022-12-12 21:40:46,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784488 conditions, 71944 events. 40085/71944 cut-off events. For 373405/379609 co-relation queries the response was YES. Maximal size of possible extension queue 3365. Compared 722706 event pairs, 170 based on Foata normal form. 6931/65994 useless extension candidates. Maximal degree in co-relation 784443. Up to 64255 conditions per place. [2022-12-12 21:40:46,372 INFO L137 encePairwiseOnDemand]: 69/84 looper letters, 398 selfloop transitions, 381 changer transitions 1253/2062 dead transitions. [2022-12-12 21:40:46,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 2062 transitions, 52569 flow [2022-12-12 21:40:46,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 21:40:46,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 21:40:46,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 235 transitions. [2022-12-12 21:40:46,374 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.34970238095238093 [2022-12-12 21:40:46,374 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, 9 predicate places. [2022-12-12 21:40:46,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 2062 transitions, 52569 flow [2022-12-12 21:40:46,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 809 transitions, 20528 flow [2022-12-12 21:40:46,562 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 809 transitions, 20528 flow [2022-12-12 21:40:46,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 21:40:46,562 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:40:46,562 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] [2022-12-12 21:40:46,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-12 21:40:46,563 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:40:46,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:40:46,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1834266899, now seen corresponding path program 1 times [2022-12-12 21:40:46,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:40:46,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292983317] [2022-12-12 21:40:46,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:40:46,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:40:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:40:46,741 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 21:40:46,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:40:46,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292983317] [2022-12-12 21:40:46,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292983317] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:40:46,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:40:46,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:40:46,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064173177] [2022-12-12 21:40:46,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:40:46,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:40:46,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:40:46,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:40:46,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:40:46,743 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 84 [2022-12-12 21:40:46,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 809 transitions, 20528 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 21:40:46,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:40:46,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 84 [2022-12-12 21:40:46,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:40:51,261 INFO L130 PetriNetUnfolder]: 16469/25166 cut-off events. [2022-12-12 21:40:51,262 INFO L131 PetriNetUnfolder]: For 181619/183549 co-relation queries the response was YES. [2022-12-12 21:40:51,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302340 conditions, 25166 events. 16469/25166 cut-off events. For 181619/183549 co-relation queries the response was YES. Maximal size of possible extension queue 891. Compared 169584 event pairs, 7 based on Foata normal form. 516/20589 useless extension candidates. Maximal degree in co-relation 302292. Up to 23174 conditions per place. [2022-12-12 21:40:51,417 INFO L137 encePairwiseOnDemand]: 81/84 looper letters, 323 selfloop transitions, 1 changer transitions 871/1224 dead transitions. [2022-12-12 21:40:51,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 1224 transitions, 33795 flow [2022-12-12 21:40:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:40:51,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:40:51,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2022-12-12 21:40:51,418 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2022-12-12 21:40:51,418 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, 8 predicate places. [2022-12-12 21:40:51,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 1224 transitions, 33795 flow [2022-12-12 21:40:51,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 353 transitions, 9434 flow [2022-12-12 21:40:51,486 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 353 transitions, 9434 flow [2022-12-12 21:40:51,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 21:40:51,486 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:40:51,486 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] [2022-12-12 21:40:51,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-12 21:40:51,487 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-12 21:40:51,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:40:51,487 INFO L85 PathProgramCache]: Analyzing trace with hash -880244199, now seen corresponding path program 1 times [2022-12-12 21:40:51,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:40:51,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020331048] [2022-12-12 21:40:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:40:51,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:40:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:40:52,163 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 21:40:52,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:40:52,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020331048] [2022-12-12 21:40:52,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020331048] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:40:52,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:40:52,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 21:40:52,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217309730] [2022-12-12 21:40:52,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:40:52,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 21:40:52,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:40:52,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 21:40:52,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-12 21:40:52,165 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 84 [2022-12-12 21:40:52,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 353 transitions, 9434 flow. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 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 21:40:52,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:40:52,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 84 [2022-12-12 21:40:52,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand