/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 21:18:29,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 21:18:29,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 21:18:29,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 21:18:29,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 21:18:29,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 21:18:29,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 21:18:29,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 21:18:29,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 21:18:29,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 21:18:29,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 21:18:29,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 21:18:29,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 21:18:29,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 21:18:29,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 21:18:29,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 21:18:29,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 21:18:29,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 21:18:29,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 21:18:29,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 21:18:29,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 21:18:29,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 21:18:29,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 21:18:29,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 21:18:29,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 21:18:29,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 21:18:29,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 21:18:29,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 21:18:29,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 21:18:29,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 21:18:29,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 21:18:29,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 21:18:29,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 21:18:29,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 21:18:29,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 21:18:29,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 21:18:29,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 21:18:29,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 21:18:29,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 21:18:29,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 21:18:29,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 21:18:29,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-05 21:18:29,762 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 21:18:29,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 21:18:29,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 21:18:29,764 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 21:18:29,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 21:18:29,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 21:18:29,765 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 21:18:29,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 21:18:29,765 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 21:18:29,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 21:18:29,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 21:18:29,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 21:18:29,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 21:18:29,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 21:18:29,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 21:18:29,767 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 21:18:29,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 21:18:29,767 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 21:18:29,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 21:18:29,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 21:18:29,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 21:18:29,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 21:18:29,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 21:18:29,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:18:29,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 21:18:29,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 21:18:29,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 21:18:29,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 21:18:29,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 21:18:29,787 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 21:18:29,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 21:18:30,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 21:18:30,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 21:18:30,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 21:18:30,080 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 21:18:30,081 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 21:18:30,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2022-12-05 21:18:31,113 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 21:18:31,298 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 21:18:31,298 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2022-12-05 21:18:31,302 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e7dfb5c3/fffb2cee9fef4d8d9eec9839428dcfac/FLAG174de0cd2 [2022-12-05 21:18:31,310 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e7dfb5c3/fffb2cee9fef4d8d9eec9839428dcfac [2022-12-05 21:18:31,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 21:18:31,313 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 21:18:31,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 21:18:31,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 21:18:31,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 21:18:31,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:18:31" (1/1) ... [2022-12-05 21:18:31,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf60bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:31, skipping insertion in model container [2022-12-05 21:18:31,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:18:31" (1/1) ... [2022-12-05 21:18:31,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 21:18:31,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 21:18:31,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,437 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,437 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,437 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,437 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,438 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,438 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,438 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,438 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,438 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,439 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,439 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,439 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,439 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,440 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,440 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,440 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,440 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,440 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,440 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,441 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,441 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,441 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,441 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,442 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,452 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c[4722,4735] [2022-12-05 21:18:31,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:18:31,463 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 21:18:31,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,498 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:18:31,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:18:31,508 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c[4722,4735] [2022-12-05 21:18:31,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:18:31,520 INFO L208 MainTranslator]: Completed translation [2022-12-05 21:18:31,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:31 WrapperNode [2022-12-05 21:18:31,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 21:18:31,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 21:18:31,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 21:18:31,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 21:18:31,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:31" (1/1) ... [2022-12-05 21:18:31,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:31" (1/1) ... [2022-12-05 21:18:31,569 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 253 [2022-12-05 21:18:31,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 21:18:31,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 21:18:31,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 21:18:31,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 21:18:31,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:31" (1/1) ... [2022-12-05 21:18:31,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:31" (1/1) ... [2022-12-05 21:18:31,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:31" (1/1) ... [2022-12-05 21:18:31,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:31" (1/1) ... [2022-12-05 21:18:31,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:31" (1/1) ... [2022-12-05 21:18:31,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:31" (1/1) ... [2022-12-05 21:18:31,599 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:31" (1/1) ... [2022-12-05 21:18:31,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:31" (1/1) ... [2022-12-05 21:18:31,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 21:18:31,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 21:18:31,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 21:18:31,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 21:18:31,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:31" (1/1) ... [2022-12-05 21:18:31,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:18:31,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:18:31,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 21:18:31,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 21:18:31,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 21:18:31,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 21:18:31,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 21:18:31,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 21:18:31,704 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 21:18:31,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 21:18:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 21:18:31,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 21:18:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 21:18:31,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 21:18:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-05 21:18:31,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-05 21:18:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 21:18:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-05 21:18:31,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-05 21:18:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-12-05 21:18:31,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-12-05 21:18:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 21:18:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 21:18:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 21:18:31,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 21:18:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 21:18:31,707 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 21:18:31,791 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 21:18:31,792 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 21:18:32,075 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 21:18:32,133 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 21:18:32,134 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 21:18:32,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:18:32 BoogieIcfgContainer [2022-12-05 21:18:32,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 21:18:32,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 21:18:32,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 21:18:32,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 21:18:32,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:18:31" (1/3) ... [2022-12-05 21:18:32,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b38427a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:18:32, skipping insertion in model container [2022-12-05 21:18:32,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:31" (2/3) ... [2022-12-05 21:18:32,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b38427a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:18:32, skipping insertion in model container [2022-12-05 21:18:32,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:18:32" (3/3) ... [2022-12-05 21:18:32,148 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2022-12-05 21:18:32,160 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 21:18:32,160 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 21:18:32,160 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 21:18:32,333 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-12-05 21:18:32,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 224 transitions, 520 flow [2022-12-05 21:18:32,448 INFO L130 PetriNetUnfolder]: 8/196 cut-off events. [2022-12-05 21:18:32,448 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-05 21:18:32,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 196 events. 8/196 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 235 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 168. Up to 3 conditions per place. [2022-12-05 21:18:32,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 224 transitions, 520 flow [2022-12-05 21:18:32,461 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 188 transitions, 424 flow [2022-12-05 21:18:32,462 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 21:18:32,483 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 188 transitions, 424 flow [2022-12-05 21:18:32,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 188 transitions, 424 flow [2022-12-05 21:18:32,533 INFO L130 PetriNetUnfolder]: 8/188 cut-off events. [2022-12-05 21:18:32,534 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-05 21:18:32,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 188 events. 8/188 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 234 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 168. Up to 3 conditions per place. [2022-12-05 21:18:32,541 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 188 transitions, 424 flow [2022-12-05 21:18:32,541 INFO L188 LiptonReduction]: Number of co-enabled transitions 7268 [2022-12-05 21:18:36,752 INFO L203 LiptonReduction]: Total number of compositions: 131 [2022-12-05 21:18:36,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 21:18:36,767 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;@2124ca41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 21:18:36,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-05 21:18:36,775 INFO L130 PetriNetUnfolder]: 6/64 cut-off events. [2022-12-05 21:18:36,775 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-05 21:18:36,775 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:18:36,776 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:18:36,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-05 21:18:36,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:18:36,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1625495205, now seen corresponding path program 1 times [2022-12-05 21:18:36,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:18:36,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846198491] [2022-12-05 21:18:36,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:18:36,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:18:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:18:36,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:18:36,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:18:36,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846198491] [2022-12-05 21:18:36,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846198491] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:18:36,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:18:36,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 21:18:36,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499448046] [2022-12-05 21:18:36,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:18:36,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-05 21:18:36,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:18:36,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-05 21:18:36,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-05 21:18:36,974 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 65 [2022-12-05 21:18:36,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 178 flow. Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:18:36,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:18:36,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 65 [2022-12-05 21:18:36,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:18:38,885 INFO L130 PetriNetUnfolder]: 19745/26241 cut-off events. [2022-12-05 21:18:38,886 INFO L131 PetriNetUnfolder]: For 3807/3807 co-relation queries the response was YES. [2022-12-05 21:18:38,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56610 conditions, 26241 events. 19745/26241 cut-off events. For 3807/3807 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 135170 event pairs, 18645 based on Foata normal form. 220/24996 useless extension candidates. Maximal degree in co-relation 55869. Up to 25797 conditions per place. [2022-12-05 21:18:39,040 INFO L137 encePairwiseOnDemand]: 63/65 looper letters, 47 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2022-12-05 21:18:39,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 63 transitions, 268 flow [2022-12-05 21:18:39,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-05 21:18:39,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-05 21:18:39,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 81 transitions. [2022-12-05 21:18:39,048 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6230769230769231 [2022-12-05 21:18:39,049 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 178 flow. Second operand 2 states and 81 transitions. [2022-12-05 21:18:39,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 63 transitions, 268 flow [2022-12-05 21:18:39,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 236 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-12-05 21:18:39,159 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 142 flow [2022-12-05 21:18:39,161 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=142, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2022-12-05 21:18:39,163 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, -11 predicate places. [2022-12-05 21:18:39,163 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 142 flow [2022-12-05 21:18:39,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:18:39,163 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:18:39,163 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:18:39,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 21:18:39,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-05 21:18:39,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:18:39,164 INFO L85 PathProgramCache]: Analyzing trace with hash 728934078, now seen corresponding path program 1 times [2022-12-05 21:18:39,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:18:39,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793406799] [2022-12-05 21:18:39,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:18:39,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:18:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:18:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:18:39,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:18:39,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793406799] [2022-12-05 21:18:39,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793406799] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:18:39,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:18:39,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-05 21:18:39,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683716568] [2022-12-05 21:18:39,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:18:39,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 21:18:39,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:18:39,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 21:18:39,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-12-05 21:18:39,902 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 65 [2022-12-05 21:18:39,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 142 flow. Second operand has 16 states, 16 states have (on average 14.9375) internal successors, (239), 16 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:18:39,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:18:39,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 65 [2022-12-05 21:18:39,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:18:46,100 INFO L130 PetriNetUnfolder]: 58208/75071 cut-off events. [2022-12-05 21:18:46,100 INFO L131 PetriNetUnfolder]: For 2018/2018 co-relation queries the response was YES. [2022-12-05 21:18:46,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152459 conditions, 75071 events. 58208/75071 cut-off events. For 2018/2018 co-relation queries the response was YES. Maximal size of possible extension queue 1447. Compared 382187 event pairs, 9220 based on Foata normal form. 1/71933 useless extension candidates. Maximal degree in co-relation 152456. Up to 54330 conditions per place. [2022-12-05 21:18:46,371 INFO L137 encePairwiseOnDemand]: 47/65 looper letters, 460 selfloop transitions, 150 changer transitions 20/642 dead transitions. [2022-12-05 21:18:46,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 642 transitions, 2706 flow [2022-12-05 21:18:46,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-05 21:18:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-05 21:18:46,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1087 transitions. [2022-12-05 21:18:46,377 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.44008097165991905 [2022-12-05 21:18:46,377 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 142 flow. Second operand 38 states and 1087 transitions. [2022-12-05 21:18:46,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 642 transitions, 2706 flow [2022-12-05 21:18:46,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 642 transitions, 2706 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 21:18:46,385 INFO L231 Difference]: Finished difference. Result has 118 places, 224 transitions, 931 flow [2022-12-05 21:18:46,386 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=931, PETRI_PLACES=118, PETRI_TRANSITIONS=224} [2022-12-05 21:18:46,386 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 40 predicate places. [2022-12-05 21:18:46,386 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 224 transitions, 931 flow [2022-12-05 21:18:46,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.9375) internal successors, (239), 16 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:18:46,387 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:18:46,387 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:18:46,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 21:18:46,387 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-05 21:18:46,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:18:46,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1572394214, now seen corresponding path program 2 times [2022-12-05 21:18:46,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:18:46,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353568468] [2022-12-05 21:18:46,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:18:46,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:18:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:18:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:18:46,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:18:46,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353568468] [2022-12-05 21:18:46,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353568468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:18:46,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:18:46,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:18:46,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648763264] [2022-12-05 21:18:46,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:18:46,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:18:46,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:18:46,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:18:46,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:18:46,746 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 65 [2022-12-05 21:18:46,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 224 transitions, 931 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:18:46,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:18:46,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 65 [2022-12-05 21:18:46,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:18:50,244 INFO L130 PetriNetUnfolder]: 37825/50761 cut-off events. [2022-12-05 21:18:50,245 INFO L131 PetriNetUnfolder]: For 61886/62257 co-relation queries the response was YES. [2022-12-05 21:18:50,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141515 conditions, 50761 events. 37825/50761 cut-off events. For 61886/62257 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 280785 event pairs, 20034 based on Foata normal form. 608/47821 useless extension candidates. Maximal degree in co-relation 141497. Up to 42351 conditions per place. [2022-12-05 21:18:50,643 INFO L137 encePairwiseOnDemand]: 61/65 looper letters, 270 selfloop transitions, 14 changer transitions 0/306 dead transitions. [2022-12-05 21:18:50,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 306 transitions, 1834 flow [2022-12-05 21:18:50,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:18:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:18:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2022-12-05 21:18:50,644 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2022-12-05 21:18:50,644 INFO L175 Difference]: Start difference. First operand has 118 places, 224 transitions, 931 flow. Second operand 4 states and 160 transitions. [2022-12-05 21:18:50,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 306 transitions, 1834 flow [2022-12-05 21:18:50,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 306 transitions, 1834 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 21:18:50,938 INFO L231 Difference]: Finished difference. Result has 122 places, 224 transitions, 974 flow [2022-12-05 21:18:50,938 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=974, PETRI_PLACES=122, PETRI_TRANSITIONS=224} [2022-12-05 21:18:50,939 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2022-12-05 21:18:50,939 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 224 transitions, 974 flow [2022-12-05 21:18:50,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:18:50,939 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:18:50,939 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:18:50,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 21:18:50,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-05 21:18:50,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:18:50,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1659884542, now seen corresponding path program 3 times [2022-12-05 21:18:50,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:18:50,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764050903] [2022-12-05 21:18:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:18:50,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:18:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:18:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:18:51,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:18:51,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764050903] [2022-12-05 21:18:51,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764050903] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:18:51,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:18:51,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:18:51,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987299428] [2022-12-05 21:18:51,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:18:51,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:18:51,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:18:51,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:18:51,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:18:51,128 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 65 [2022-12-05 21:18:51,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 224 transitions, 974 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:18:51,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:18:51,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 65 [2022-12-05 21:18:51,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:18:53,802 INFO L130 PetriNetUnfolder]: 27837/37114 cut-off events. [2022-12-05 21:18:53,802 INFO L131 PetriNetUnfolder]: For 61360/61714 co-relation queries the response was YES. [2022-12-05 21:18:53,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105720 conditions, 37114 events. 27837/37114 cut-off events. For 61360/61714 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 192677 event pairs, 16460 based on Foata normal form. 780/35644 useless extension candidates. Maximal degree in co-relation 105700. Up to 31143 conditions per place. [2022-12-05 21:18:54,056 INFO L137 encePairwiseOnDemand]: 61/65 looper letters, 234 selfloop transitions, 7 changer transitions 0/262 dead transitions. [2022-12-05 21:18:54,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 262 transitions, 1570 flow [2022-12-05 21:18:54,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:18:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:18:54,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2022-12-05 21:18:54,057 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6076923076923076 [2022-12-05 21:18:54,057 INFO L175 Difference]: Start difference. First operand has 122 places, 224 transitions, 974 flow. Second operand 4 states and 158 transitions. [2022-12-05 21:18:54,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 262 transitions, 1570 flow [2022-12-05 21:18:54,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 262 transitions, 1528 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-05 21:18:54,145 INFO L231 Difference]: Finished difference. Result has 120 places, 212 transitions, 906 flow [2022-12-05 21:18:54,146 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=906, PETRI_PLACES=120, PETRI_TRANSITIONS=212} [2022-12-05 21:18:54,146 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 42 predicate places. [2022-12-05 21:18:54,146 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 212 transitions, 906 flow [2022-12-05 21:18:54,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:18:54,147 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:18:54,147 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:18:54,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 21:18:54,147 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-05 21:18:54,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:18:54,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1900436674, now seen corresponding path program 4 times [2022-12-05 21:18:54,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:18:54,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865964155] [2022-12-05 21:18:54,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:18:54,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:18:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:18:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:18:55,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:18:55,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865964155] [2022-12-05 21:18:55,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865964155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:18:55,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:18:55,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-05 21:18:55,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885386058] [2022-12-05 21:18:55,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:18:55,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-05 21:18:55,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:18:55,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-05 21:18:55,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-12-05 21:18:55,121 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 65 [2022-12-05 21:18:55,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 212 transitions, 906 flow. Second operand has 20 states, 20 states have (on average 14.35) internal successors, (287), 20 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:18:55,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:18:55,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 65 [2022-12-05 21:18:55,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:19:03,813 INFO L130 PetriNetUnfolder]: 56750/73525 cut-off events. [2022-12-05 21:19:03,813 INFO L131 PetriNetUnfolder]: For 117890/117890 co-relation queries the response was YES. [2022-12-05 21:19:04,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222712 conditions, 73525 events. 56750/73525 cut-off events. For 117890/117890 co-relation queries the response was YES. Maximal size of possible extension queue 1379. Compared 374034 event pairs, 5224 based on Foata normal form. 1/70944 useless extension candidates. Maximal degree in co-relation 222692. Up to 49304 conditions per place. [2022-12-05 21:19:04,280 INFO L137 encePairwiseOnDemand]: 45/65 looper letters, 585 selfloop transitions, 371 changer transitions 27/995 dead transitions. [2022-12-05 21:19:04,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 995 transitions, 6017 flow [2022-12-05 21:19:04,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-05 21:19:04,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-12-05 21:19:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 1409 transitions. [2022-12-05 21:19:04,285 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.39412587412587413 [2022-12-05 21:19:04,285 INFO L175 Difference]: Start difference. First operand has 120 places, 212 transitions, 906 flow. Second operand 55 states and 1409 transitions. [2022-12-05 21:19:04,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 995 transitions, 6017 flow [2022-12-05 21:19:04,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 995 transitions, 5841 flow, removed 54 selfloop flow, removed 4 redundant places. [2022-12-05 21:19:04,613 INFO L231 Difference]: Finished difference. Result has 197 places, 527 transitions, 3587 flow [2022-12-05 21:19:04,613 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=3587, PETRI_PLACES=197, PETRI_TRANSITIONS=527} [2022-12-05 21:19:04,613 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 119 predicate places. [2022-12-05 21:19:04,614 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 527 transitions, 3587 flow [2022-12-05 21:19:04,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.35) internal successors, (287), 20 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:04,614 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:19:04,614 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:19:04,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 21:19:04,614 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-05 21:19:04,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:19:04,615 INFO L85 PathProgramCache]: Analyzing trace with hash 697121744, now seen corresponding path program 5 times [2022-12-05 21:19:04,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:19:04,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561447783] [2022-12-05 21:19:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:19:04,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:19:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:19:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:04,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:19:04,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561447783] [2022-12-05 21:19:04,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561447783] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:19:04,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:19:04,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:19:04,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658163983] [2022-12-05 21:19:04,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:19:04,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:19:04,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:19:04,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:19:04,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:19:04,747 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 65 [2022-12-05 21:19:04,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 527 transitions, 3587 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:04,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:19:04,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 65 [2022-12-05 21:19:04,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:19:09,599 INFO L130 PetriNetUnfolder]: 33062/45130 cut-off events. [2022-12-05 21:19:09,599 INFO L131 PetriNetUnfolder]: For 219418/221696 co-relation queries the response was YES. [2022-12-05 21:19:09,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183482 conditions, 45130 events. 33062/45130 cut-off events. For 219418/221696 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 253563 event pairs, 11455 based on Foata normal form. 1894/43725 useless extension candidates. Maximal degree in co-relation 183436. Up to 27196 conditions per place. [2022-12-05 21:19:10,052 INFO L137 encePairwiseOnDemand]: 61/65 looper letters, 416 selfloop transitions, 60 changer transitions 2/523 dead transitions. [2022-12-05 21:19:10,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 523 transitions, 4539 flow [2022-12-05 21:19:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:19:10,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:19:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2022-12-05 21:19:10,054 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6076923076923076 [2022-12-05 21:19:10,054 INFO L175 Difference]: Start difference. First operand has 197 places, 527 transitions, 3587 flow. Second operand 4 states and 158 transitions. [2022-12-05 21:19:10,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 523 transitions, 4539 flow [2022-12-05 21:19:11,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 523 transitions, 4106 flow, removed 181 selfloop flow, removed 7 redundant places. [2022-12-05 21:19:11,353 INFO L231 Difference]: Finished difference. Result has 188 places, 420 transitions, 2693 flow [2022-12-05 21:19:11,354 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2693, PETRI_PLACES=188, PETRI_TRANSITIONS=420} [2022-12-05 21:19:11,354 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 110 predicate places. [2022-12-05 21:19:11,354 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 420 transitions, 2693 flow [2022-12-05 21:19:11,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:11,354 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:19:11,354 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:19:11,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 21:19:11,355 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-05 21:19:11,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:19:11,355 INFO L85 PathProgramCache]: Analyzing trace with hash -148501194, now seen corresponding path program 6 times [2022-12-05 21:19:11,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:19:11,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587675375] [2022-12-05 21:19:11,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:19:11,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:19:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:19:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:11,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:19:11,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587675375] [2022-12-05 21:19:11,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587675375] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:19:11,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:19:11,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-05 21:19:11,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112701085] [2022-12-05 21:19:11,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:19:11,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 21:19:11,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:19:11,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 21:19:11,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-12-05 21:19:11,843 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 65 [2022-12-05 21:19:11,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 420 transitions, 2693 flow. Second operand has 16 states, 16 states have (on average 14.9375) internal successors, (239), 16 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:11,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:19:11,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 65 [2022-12-05 21:19:11,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:19:19,581 INFO L130 PetriNetUnfolder]: 44472/58455 cut-off events. [2022-12-05 21:19:19,581 INFO L131 PetriNetUnfolder]: For 268784/268784 co-relation queries the response was YES. [2022-12-05 21:19:19,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237493 conditions, 58455 events. 44472/58455 cut-off events. For 268784/268784 co-relation queries the response was YES. Maximal size of possible extension queue 1120. Compared 297044 event pairs, 4512 based on Foata normal form. 1/56383 useless extension candidates. Maximal degree in co-relation 237451. Up to 46099 conditions per place. [2022-12-05 21:19:20,193 INFO L137 encePairwiseOnDemand]: 47/65 looper letters, 735 selfloop transitions, 191 changer transitions 56/994 dead transitions. [2022-12-05 21:19:20,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 994 transitions, 7115 flow [2022-12-05 21:19:20,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-05 21:19:20,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-05 21:19:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1109 transitions. [2022-12-05 21:19:20,196 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.43747534516765285 [2022-12-05 21:19:20,196 INFO L175 Difference]: Start difference. First operand has 188 places, 420 transitions, 2693 flow. Second operand 39 states and 1109 transitions. [2022-12-05 21:19:20,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 994 transitions, 7115 flow [2022-12-05 21:19:21,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 994 transitions, 6913 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-05 21:19:21,512 INFO L231 Difference]: Finished difference. Result has 235 places, 512 transitions, 3877 flow [2022-12-05 21:19:21,512 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=2571, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3877, PETRI_PLACES=235, PETRI_TRANSITIONS=512} [2022-12-05 21:19:21,514 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 157 predicate places. [2022-12-05 21:19:21,514 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 512 transitions, 3877 flow [2022-12-05 21:19:21,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.9375) internal successors, (239), 16 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:21,515 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:19:21,515 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:19:21,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 21:19:21,515 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-05 21:19:21,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:19:21,516 INFO L85 PathProgramCache]: Analyzing trace with hash 269900519, now seen corresponding path program 1 times [2022-12-05 21:19:21,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:19:21,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626777717] [2022-12-05 21:19:21,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:19:21,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:19:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:19:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:22,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:19:22,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626777717] [2022-12-05 21:19:22,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626777717] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:19:22,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:19:22,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-05 21:19:22,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103830398] [2022-12-05 21:19:22,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:19:22,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 21:19:22,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:19:22,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 21:19:22,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-12-05 21:19:22,280 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 65 [2022-12-05 21:19:22,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 512 transitions, 3877 flow. Second operand has 18 states, 18 states have (on average 14.61111111111111) internal successors, (263), 18 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:22,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:19:22,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 65 [2022-12-05 21:19:22,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:19:31,568 INFO L130 PetriNetUnfolder]: 49812/65567 cut-off events. [2022-12-05 21:19:31,570 INFO L131 PetriNetUnfolder]: For 440087/440087 co-relation queries the response was YES. [2022-12-05 21:19:32,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297522 conditions, 65567 events. 49812/65567 cut-off events. For 440087/440087 co-relation queries the response was YES. Maximal size of possible extension queue 1214. Compared 338298 event pairs, 6504 based on Foata normal form. 1/63045 useless extension candidates. Maximal degree in co-relation 297466. Up to 56368 conditions per place. [2022-12-05 21:19:32,519 INFO L137 encePairwiseOnDemand]: 47/65 looper letters, 843 selfloop transitions, 180 changer transitions 37/1072 dead transitions. [2022-12-05 21:19:32,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 1072 transitions, 9125 flow [2022-12-05 21:19:32,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-05 21:19:32,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-05 21:19:32,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 992 transitions. [2022-12-05 21:19:32,544 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.40161943319838056 [2022-12-05 21:19:32,544 INFO L175 Difference]: Start difference. First operand has 235 places, 512 transitions, 3877 flow. Second operand 38 states and 992 transitions. [2022-12-05 21:19:32,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 1072 transitions, 9125 flow [2022-12-05 21:19:35,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 1072 transitions, 8620 flow, removed 172 selfloop flow, removed 7 redundant places. [2022-12-05 21:19:35,702 INFO L231 Difference]: Finished difference. Result has 283 places, 668 transitions, 5777 flow [2022-12-05 21:19:35,702 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=3519, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5777, PETRI_PLACES=283, PETRI_TRANSITIONS=668} [2022-12-05 21:19:35,704 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 205 predicate places. [2022-12-05 21:19:35,705 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 668 transitions, 5777 flow [2022-12-05 21:19:35,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.61111111111111) internal successors, (263), 18 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:35,709 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:19:35,709 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:19:35,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 21:19:35,723 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-05 21:19:35,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:19:35,727 INFO L85 PathProgramCache]: Analyzing trace with hash -400544929, now seen corresponding path program 2 times [2022-12-05 21:19:35,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:19:35,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015932982] [2022-12-05 21:19:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:19:35,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:19:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:19:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:36,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:19:36,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015932982] [2022-12-05 21:19:36,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015932982] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:19:36,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:19:36,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-05 21:19:36,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287432347] [2022-12-05 21:19:36,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:19:36,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-05 21:19:36,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:19:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-05 21:19:36,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-12-05 21:19:36,293 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 65 [2022-12-05 21:19:36,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 668 transitions, 5777 flow. Second operand has 18 states, 18 states have (on average 14.61111111111111) internal successors, (263), 18 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:36,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:19:36,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 65 [2022-12-05 21:19:36,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:19:48,636 INFO L130 PetriNetUnfolder]: 55412/73019 cut-off events. [2022-12-05 21:19:48,636 INFO L131 PetriNetUnfolder]: For 573942/573942 co-relation queries the response was YES. [2022-12-05 21:19:49,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358476 conditions, 73019 events. 55412/73019 cut-off events. For 573942/573942 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 382352 event pairs, 7092 based on Foata normal form. 1/70195 useless extension candidates. Maximal degree in co-relation 358400. Up to 62590 conditions per place. [2022-12-05 21:19:50,079 INFO L137 encePairwiseOnDemand]: 47/65 looper letters, 921 selfloop transitions, 348 changer transitions 34/1315 dead transitions. [2022-12-05 21:19:50,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 1315 transitions, 12470 flow [2022-12-05 21:19:50,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-05 21:19:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-12-05 21:19:50,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 1281 transitions. [2022-12-05 21:19:50,105 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.36495726495726494 [2022-12-05 21:19:50,105 INFO L175 Difference]: Start difference. First operand has 283 places, 668 transitions, 5777 flow. Second operand 54 states and 1281 transitions. [2022-12-05 21:19:50,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 1315 transitions, 12470 flow [2022-12-05 21:19:55,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1315 transitions, 11916 flow, removed 277 selfloop flow, removed 1 redundant places. [2022-12-05 21:19:55,665 INFO L231 Difference]: Finished difference. Result has 362 places, 898 transitions, 9212 flow [2022-12-05 21:19:55,666 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=5283, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=9212, PETRI_PLACES=362, PETRI_TRANSITIONS=898} [2022-12-05 21:19:55,667 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 284 predicate places. [2022-12-05 21:19:55,667 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 898 transitions, 9212 flow [2022-12-05 21:19:55,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.61111111111111) internal successors, (263), 18 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:55,667 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:19:55,667 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:19:55,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 21:19:55,667 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-05 21:19:55,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:19:55,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1016772283, now seen corresponding path program 3 times [2022-12-05 21:19:55,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:19:55,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805565452] [2022-12-05 21:19:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:19:55,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:19:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:19:56,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:19:56,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:19:56,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805565452] [2022-12-05 21:19:56,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805565452] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:19:56,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:19:56,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 21:19:56,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546457251] [2022-12-05 21:19:56,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:19:56,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-05 21:19:56,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:19:56,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-05 21:19:56,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-12-05 21:19:56,381 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 65 [2022-12-05 21:19:56,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 898 transitions, 9212 flow. Second operand has 21 states, 21 states have (on average 14.238095238095237) internal successors, (299), 21 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:19:56,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:19:56,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 65 [2022-12-05 21:19:56,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:20:11,906 INFO L130 PetriNetUnfolder]: 59730/78815 cut-off events. [2022-12-05 21:20:11,906 INFO L131 PetriNetUnfolder]: For 790728/790728 co-relation queries the response was YES. [2022-12-05 21:20:13,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416442 conditions, 78815 events. 59730/78815 cut-off events. For 790728/790728 co-relation queries the response was YES. Maximal size of possible extension queue 1367. Compared 416304 event pairs, 7866 based on Foata normal form. 1/75583 useless extension candidates. Maximal degree in co-relation 416337. Up to 67990 conditions per place. [2022-12-05 21:20:13,939 INFO L137 encePairwiseOnDemand]: 45/65 looper letters, 1131 selfloop transitions, 339 changer transitions 34/1516 dead transitions. [2022-12-05 21:20:13,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 1516 transitions, 16848 flow [2022-12-05 21:20:13,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-05 21:20:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-05 21:20:13,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1084 transitions. [2022-12-05 21:20:13,941 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.37902097902097903 [2022-12-05 21:20:13,941 INFO L175 Difference]: Start difference. First operand has 362 places, 898 transitions, 9212 flow. Second operand 44 states and 1084 transitions. [2022-12-05 21:20:13,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 1516 transitions, 16848 flow [2022-12-05 21:20:23,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 1516 transitions, 15831 flow, removed 472 selfloop flow, removed 3 redundant places. [2022-12-05 21:20:23,255 INFO L231 Difference]: Finished difference. Result has 422 places, 1100 transitions, 12367 flow [2022-12-05 21:20:23,256 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=8216, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=898, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=12367, PETRI_PLACES=422, PETRI_TRANSITIONS=1100} [2022-12-05 21:20:23,256 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 344 predicate places. [2022-12-05 21:20:23,256 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 1100 transitions, 12367 flow [2022-12-05 21:20:23,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.238095238095237) internal successors, (299), 21 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:20:23,256 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:20:23,256 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:20:23,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 21:20:23,257 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-05 21:20:23,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:20:23,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1510041617, now seen corresponding path program 4 times [2022-12-05 21:20:23,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:20:23,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83827545] [2022-12-05 21:20:23,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:20:23,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:20:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:20:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:20:24,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:20:24,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83827545] [2022-12-05 21:20:24,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83827545] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:20:24,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:20:24,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-05 21:20:24,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077392734] [2022-12-05 21:20:24,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:20:24,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-05 21:20:24,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:20:24,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-05 21:20:24,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2022-12-05 21:20:24,094 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 65 [2022-12-05 21:20:24,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 1100 transitions, 12367 flow. Second operand has 21 states, 21 states have (on average 14.238095238095237) internal successors, (299), 21 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:20:24,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:20:24,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 65 [2022-12-05 21:20:24,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand