/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-ticket-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 15:40:50,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 15:40:50,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 15:40:50,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 15:40:50,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 15:40:50,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 15:40:50,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 15:40:50,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 15:40:50,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 15:40:50,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 15:40:50,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 15:40:50,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 15:40:50,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 15:40:50,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 15:40:50,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 15:40:50,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 15:40:50,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 15:40:50,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 15:40:50,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 15:40:50,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 15:40:50,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 15:40:50,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 15:40:50,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 15:40:50,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 15:40:50,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 15:40:50,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 15:40:50,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 15:40:50,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 15:40:50,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 15:40:50,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 15:40:50,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 15:40:50,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 15:40:50,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 15:40:50,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 15:40:50,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 15:40:50,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 15:40:50,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 15:40:50,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 15:40:50,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 15:40:50,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 15:40:50,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 15:40:50,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 15:40:50,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 15:40:50,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 15:40:50,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 15:40:50,474 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 15:40:50,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 15:40:50,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 15:40:50,475 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 15:40:50,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 15:40:50,476 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 15:40:50,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 15:40:50,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 15:40:50,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 15:40:50,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 15:40:50,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 15:40:50,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 15:40:50,477 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 15:40:50,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 15:40:50,477 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 15:40:50,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 15:40:50,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 15:40:50,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 15:40:50,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 15:40:50,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 15:40:50,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:40:50,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 15:40:50,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 15:40:50,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 15:40:50,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 15:40:50,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 15:40:50,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 15:40:50,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 15:40:50,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 15:40:50,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 15:40:50,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 15:40:50,809 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 15:40:50,811 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 15:40:50,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2022-12-12 15:40:52,067 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 15:40:52,228 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 15:40:52,228 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2022-12-12 15:40:52,238 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11789f85c/03d9a01c68204d8ebd169151555c4ae1/FLAGe10fb44be [2022-12-12 15:40:52,629 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11789f85c/03d9a01c68204d8ebd169151555c4ae1 [2022-12-12 15:40:52,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 15:40:52,632 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 15:40:52,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 15:40:52,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 15:40:52,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 15:40:52,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:40:52" (1/1) ... [2022-12-12 15:40:52,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@83f0a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:52, skipping insertion in model container [2022-12-12 15:40:52,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:40:52" (1/1) ... [2022-12-12 15:40:52,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 15:40:52,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 15:40:52,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,807 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,809 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,810 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,822 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,822 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,839 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-ticket-4.wvr.c[3526,3539] [2022-12-12 15:40:52,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:40:52,851 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 15:40:52,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,861 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,861 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,861 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,861 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,861 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:52,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:52,875 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-ticket-4.wvr.c[3526,3539] [2022-12-12 15:40:52,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:40:52,889 INFO L208 MainTranslator]: Completed translation [2022-12-12 15:40:52,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:52 WrapperNode [2022-12-12 15:40:52,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 15:40:52,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 15:40:52,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 15:40:52,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 15:40:52,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:52" (1/1) ... [2022-12-12 15:40:52,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:52" (1/1) ... [2022-12-12 15:40:52,926 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2022-12-12 15:40:52,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 15:40:52,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 15:40:52,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 15:40:52,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 15:40:52,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:52" (1/1) ... [2022-12-12 15:40:52,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:52" (1/1) ... [2022-12-12 15:40:52,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:52" (1/1) ... [2022-12-12 15:40:52,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:52" (1/1) ... [2022-12-12 15:40:52,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:52" (1/1) ... [2022-12-12 15:40:52,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:52" (1/1) ... [2022-12-12 15:40:52,948 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:52" (1/1) ... [2022-12-12 15:40:52,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:52" (1/1) ... [2022-12-12 15:40:52,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 15:40:52,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 15:40:52,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 15:40:52,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 15:40:52,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:52" (1/1) ... [2022-12-12 15:40:52,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:40:52,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:40:52,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 15:40:52,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 15:40:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 15:40:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 15:40:53,022 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 15:40:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 15:40:53,022 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 15:40:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 15:40:53,022 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 15:40:53,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-12 15:40:53,022 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-12 15:40:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 15:40:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 15:40:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 15:40:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 15:40:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 15:40:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 15:40:53,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 15:40:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 15:40:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 15:40:53,024 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 15:40:53,098 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 15:40:53,100 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 15:40:53,370 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 15:40:53,484 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 15:40:53,485 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 15:40:53,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:40:53 BoogieIcfgContainer [2022-12-12 15:40:53,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 15:40:53,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 15:40:53,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 15:40:53,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 15:40:53,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 03:40:52" (1/3) ... [2022-12-12 15:40:53,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357b8cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:40:53, skipping insertion in model container [2022-12-12 15:40:53,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:52" (2/3) ... [2022-12-12 15:40:53,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357b8cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:40:53, skipping insertion in model container [2022-12-12 15:40:53,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:40:53" (3/3) ... [2022-12-12 15:40:53,494 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2022-12-12 15:40:53,510 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 15:40:53,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 15:40:53,511 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 15:40:53,601 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-12 15:40:53,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 302 flow [2022-12-12 15:40:53,759 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2022-12-12 15:40:53,759 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 15:40:53,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 131 events. 2/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2022-12-12 15:40:53,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 135 transitions, 302 flow [2022-12-12 15:40:53,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 119 transitions, 262 flow [2022-12-12 15:40:53,772 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 15:40:53,797 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 119 transitions, 262 flow [2022-12-12 15:40:53,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 119 transitions, 262 flow [2022-12-12 15:40:53,848 INFO L130 PetriNetUnfolder]: 2/119 cut-off events. [2022-12-12 15:40:53,848 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 15:40:53,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 119 events. 2/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2022-12-12 15:40:53,852 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 119 transitions, 262 flow [2022-12-12 15:40:53,853 INFO L226 LiptonReduction]: Number of co-enabled transitions 1302 [2022-12-12 15:40:58,454 INFO L241 LiptonReduction]: Total number of compositions: 93 [2022-12-12 15:40:58,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 15:40:58,472 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;@6f1dc1c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 15:40:58,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-12 15:40:58,479 INFO L130 PetriNetUnfolder]: 0/25 cut-off events. [2022-12-12 15:40:58,480 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 15:40:58,480 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:40:58,480 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:40:58,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:40:58,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:40:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash -365016010, now seen corresponding path program 1 times [2022-12-12 15:40:58,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:40:58,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675802524] [2022-12-12 15:40:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:40:58,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:40:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:40:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:40:59,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:40:59,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675802524] [2022-12-12 15:40:59,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675802524] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:40:59,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:40:59,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 15:40:59,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661408307] [2022-12-12 15:40:59,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:40:59,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 15:40:59,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:40:59,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 15:40:59,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-12 15:40:59,492 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:40:59,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 76 flow. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:40:59,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:40:59,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:40:59,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:40:59,832 INFO L130 PetriNetUnfolder]: 1049/1613 cut-off events. [2022-12-12 15:40:59,832 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-12-12 15:40:59,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3434 conditions, 1613 events. 1049/1613 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6826 event pairs, 235 based on Foata normal form. 1/1614 useless extension candidates. Maximal degree in co-relation 2616. Up to 674 conditions per place. [2022-12-12 15:40:59,842 INFO L137 encePairwiseOnDemand]: 19/26 looper letters, 62 selfloop transitions, 12 changer transitions 11/85 dead transitions. [2022-12-12 15:40:59,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 85 transitions, 406 flow [2022-12-12 15:40:59,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 15:40:59,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 15:40:59,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2022-12-12 15:40:59,853 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2022-12-12 15:40:59,855 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 76 flow. Second operand 6 states and 86 transitions. [2022-12-12 15:40:59,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 85 transitions, 406 flow [2022-12-12 15:40:59,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 85 transitions, 362 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-12 15:40:59,863 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 140 flow [2022-12-12 15:40:59,865 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2022-12-12 15:40:59,867 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2022-12-12 15:40:59,868 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 140 flow [2022-12-12 15:40:59,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:40:59,868 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:40:59,868 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:40:59,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 15:40:59,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:40:59,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:40:59,869 INFO L85 PathProgramCache]: Analyzing trace with hash 940738958, now seen corresponding path program 2 times [2022-12-12 15:40:59,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:40:59,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500372662] [2022-12-12 15:40:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:40:59,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:40:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:00,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:00,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:00,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500372662] [2022-12-12 15:41:00,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500372662] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:00,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:00,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 15:41:00,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729245639] [2022-12-12 15:41:00,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:00,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 15:41:00,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:00,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 15:41:00,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 15:41:00,143 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:00,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:00,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:00,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:00,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:00,361 INFO L130 PetriNetUnfolder]: 816/1265 cut-off events. [2022-12-12 15:41:00,361 INFO L131 PetriNetUnfolder]: For 581/581 co-relation queries the response was YES. [2022-12-12 15:41:00,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 1265 events. 816/1265 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5142 event pairs, 172 based on Foata normal form. 28/1293 useless extension candidates. Maximal degree in co-relation 2029. Up to 1107 conditions per place. [2022-12-12 15:41:00,368 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 61 selfloop transitions, 14 changer transitions 0/75 dead transitions. [2022-12-12 15:41:00,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 75 transitions, 399 flow [2022-12-12 15:41:00,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:41:00,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:41:00,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2022-12-12 15:41:00,371 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2022-12-12 15:41:00,371 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 140 flow. Second operand 5 states and 59 transitions. [2022-12-12 15:41:00,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 75 transitions, 399 flow [2022-12-12 15:41:00,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 75 transitions, 389 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-12 15:41:00,378 INFO L231 Difference]: Finished difference. Result has 44 places, 52 transitions, 238 flow [2022-12-12 15:41:00,378 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=44, PETRI_TRANSITIONS=52} [2022-12-12 15:41:00,379 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2022-12-12 15:41:00,379 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 52 transitions, 238 flow [2022-12-12 15:41:00,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:00,379 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:00,379 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:00,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 15:41:00,380 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:00,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:00,380 INFO L85 PathProgramCache]: Analyzing trace with hash 364602806, now seen corresponding path program 3 times [2022-12-12 15:41:00,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:00,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176883697] [2022-12-12 15:41:00,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:00,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:00,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:00,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176883697] [2022-12-12 15:41:00,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176883697] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:00,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:00,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 15:41:00,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428762224] [2022-12-12 15:41:00,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:00,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 15:41:00,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:00,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 15:41:00,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 15:41:00,639 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:00,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 52 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:00,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:00,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:00,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:00,884 INFO L130 PetriNetUnfolder]: 841/1314 cut-off events. [2022-12-12 15:41:00,884 INFO L131 PetriNetUnfolder]: For 1067/1067 co-relation queries the response was YES. [2022-12-12 15:41:00,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3995 conditions, 1314 events. 841/1314 cut-off events. For 1067/1067 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5559 event pairs, 80 based on Foata normal form. 48/1362 useless extension candidates. Maximal degree in co-relation 2646. Up to 946 conditions per place. [2022-12-12 15:41:00,893 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 68 selfloop transitions, 25 changer transitions 0/93 dead transitions. [2022-12-12 15:41:00,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 93 transitions, 565 flow [2022-12-12 15:41:00,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 15:41:00,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 15:41:00,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2022-12-12 15:41:00,895 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2022-12-12 15:41:00,895 INFO L175 Difference]: Start difference. First operand has 44 places, 52 transitions, 238 flow. Second operand 7 states and 78 transitions. [2022-12-12 15:41:00,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 93 transitions, 565 flow [2022-12-12 15:41:00,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 93 transitions, 565 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-12 15:41:00,907 INFO L231 Difference]: Finished difference. Result has 50 places, 58 transitions, 324 flow [2022-12-12 15:41:00,907 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=50, PETRI_TRANSITIONS=58} [2022-12-12 15:41:00,908 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2022-12-12 15:41:00,908 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 58 transitions, 324 flow [2022-12-12 15:41:00,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:00,908 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:00,908 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:00,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 15:41:00,909 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:00,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:00,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1975724184, now seen corresponding path program 4 times [2022-12-12 15:41:00,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:00,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240533763] [2022-12-12 15:41:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:00,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:01,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:01,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240533763] [2022-12-12 15:41:01,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240533763] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:01,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:01,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 15:41:01,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912898398] [2022-12-12 15:41:01,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:01,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 15:41:01,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:01,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 15:41:01,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-12 15:41:01,154 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:01,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 58 transitions, 324 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:01,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:01,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:01,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:01,592 INFO L130 PetriNetUnfolder]: 1422/2251 cut-off events. [2022-12-12 15:41:01,593 INFO L131 PetriNetUnfolder]: For 2412/2412 co-relation queries the response was YES. [2022-12-12 15:41:01,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7142 conditions, 2251 events. 1422/2251 cut-off events. For 2412/2412 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11107 event pairs, 185 based on Foata normal form. 44/2295 useless extension candidates. Maximal degree in co-relation 4226. Up to 962 conditions per place. [2022-12-12 15:41:01,607 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 81 selfloop transitions, 66 changer transitions 11/158 dead transitions. [2022-12-12 15:41:01,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 158 transitions, 1052 flow [2022-12-12 15:41:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 15:41:01,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 15:41:01,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2022-12-12 15:41:01,609 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2022-12-12 15:41:01,609 INFO L175 Difference]: Start difference. First operand has 50 places, 58 transitions, 324 flow. Second operand 9 states and 108 transitions. [2022-12-12 15:41:01,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 158 transitions, 1052 flow [2022-12-12 15:41:01,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 158 transitions, 1022 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-12-12 15:41:01,624 INFO L231 Difference]: Finished difference. Result has 58 places, 101 transitions, 755 flow [2022-12-12 15:41:01,624 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=755, PETRI_PLACES=58, PETRI_TRANSITIONS=101} [2022-12-12 15:41:01,625 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2022-12-12 15:41:01,625 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 101 transitions, 755 flow [2022-12-12 15:41:01,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:01,625 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:01,625 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:01,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 15:41:01,626 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:01,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:01,626 INFO L85 PathProgramCache]: Analyzing trace with hash -270621000, now seen corresponding path program 5 times [2022-12-12 15:41:01,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:01,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102856381] [2022-12-12 15:41:01,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:01,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:01,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:01,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102856381] [2022-12-12 15:41:01,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102856381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:01,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:01,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 15:41:01,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762352203] [2022-12-12 15:41:01,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:01,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 15:41:01,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:01,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 15:41:01,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 15:41:01,798 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:01,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 101 transitions, 755 flow. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:01,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:01,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:01,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:02,137 INFO L130 PetriNetUnfolder]: 1350/2151 cut-off events. [2022-12-12 15:41:02,137 INFO L131 PetriNetUnfolder]: For 3572/3572 co-relation queries the response was YES. [2022-12-12 15:41:02,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8614 conditions, 2151 events. 1350/2151 cut-off events. For 3572/3572 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 10491 event pairs, 244 based on Foata normal form. 40/2191 useless extension candidates. Maximal degree in co-relation 8365. Up to 1817 conditions per place. [2022-12-12 15:41:02,154 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 85 selfloop transitions, 31 changer transitions 14/130 dead transitions. [2022-12-12 15:41:02,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 130 transitions, 1103 flow [2022-12-12 15:41:02,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 15:41:02,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 15:41:02,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2022-12-12 15:41:02,157 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2022-12-12 15:41:02,157 INFO L175 Difference]: Start difference. First operand has 58 places, 101 transitions, 755 flow. Second operand 7 states and 70 transitions. [2022-12-12 15:41:02,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 130 transitions, 1103 flow [2022-12-12 15:41:02,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 130 transitions, 1072 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-12-12 15:41:02,176 INFO L231 Difference]: Finished difference. Result has 63 places, 97 transitions, 767 flow [2022-12-12 15:41:02,176 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=767, PETRI_PLACES=63, PETRI_TRANSITIONS=97} [2022-12-12 15:41:02,178 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2022-12-12 15:41:02,179 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 97 transitions, 767 flow [2022-12-12 15:41:02,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:02,179 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:02,179 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:02,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 15:41:02,179 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:02,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:02,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1539433402, now seen corresponding path program 6 times [2022-12-12 15:41:02,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:02,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133290340] [2022-12-12 15:41:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:02,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:02,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:02,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133290340] [2022-12-12 15:41:02,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133290340] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:02,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:02,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 15:41:02,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10739689] [2022-12-12 15:41:02,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:02,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 15:41:02,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:02,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 15:41:02,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 15:41:02,370 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:02,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 97 transitions, 767 flow. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:02,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:02,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:02,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:02,649 INFO L130 PetriNetUnfolder]: 1198/1905 cut-off events. [2022-12-12 15:41:02,649 INFO L131 PetriNetUnfolder]: For 3151/3151 co-relation queries the response was YES. [2022-12-12 15:41:02,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7731 conditions, 1905 events. 1198/1905 cut-off events. For 3151/3151 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9132 event pairs, 206 based on Foata normal form. 18/1923 useless extension candidates. Maximal degree in co-relation 7718. Up to 1830 conditions per place. [2022-12-12 15:41:02,664 INFO L137 encePairwiseOnDemand]: 19/26 looper letters, 108 selfloop transitions, 17 changer transitions 0/125 dead transitions. [2022-12-12 15:41:02,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 125 transitions, 1173 flow [2022-12-12 15:41:02,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:41:02,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:41:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2022-12-12 15:41:02,669 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4 [2022-12-12 15:41:02,669 INFO L175 Difference]: Start difference. First operand has 63 places, 97 transitions, 767 flow. Second operand 5 states and 52 transitions. [2022-12-12 15:41:02,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 125 transitions, 1173 flow [2022-12-12 15:41:02,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 125 transitions, 1137 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 15:41:02,680 INFO L231 Difference]: Finished difference. Result has 59 places, 104 transitions, 866 flow [2022-12-12 15:41:02,680 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=866, PETRI_PLACES=59, PETRI_TRANSITIONS=104} [2022-12-12 15:41:02,682 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 20 predicate places. [2022-12-12 15:41:02,682 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 104 transitions, 866 flow [2022-12-12 15:41:02,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:02,682 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:02,682 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:02,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 15:41:02,683 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:02,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:02,683 INFO L85 PathProgramCache]: Analyzing trace with hash -635434264, now seen corresponding path program 7 times [2022-12-12 15:41:02,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:02,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771161964] [2022-12-12 15:41:02,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:02,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:02,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:02,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771161964] [2022-12-12 15:41:02,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771161964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:02,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:02,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 15:41:02,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913291400] [2022-12-12 15:41:02,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:02,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 15:41:02,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:02,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 15:41:02,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-12 15:41:02,860 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:02,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 104 transitions, 866 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:02,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:02,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:02,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:03,218 INFO L130 PetriNetUnfolder]: 1360/2231 cut-off events. [2022-12-12 15:41:03,218 INFO L131 PetriNetUnfolder]: For 4043/4043 co-relation queries the response was YES. [2022-12-12 15:41:03,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8991 conditions, 2231 events. 1360/2231 cut-off events. For 4043/4043 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 11668 event pairs, 86 based on Foata normal form. 38/2269 useless extension candidates. Maximal degree in co-relation 8976. Up to 761 conditions per place. [2022-12-12 15:41:03,240 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 82 selfloop transitions, 101 changer transitions 6/189 dead transitions. [2022-12-12 15:41:03,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 189 transitions, 1680 flow [2022-12-12 15:41:03,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 15:41:03,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 15:41:03,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2022-12-12 15:41:03,242 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2022-12-12 15:41:03,242 INFO L175 Difference]: Start difference. First operand has 59 places, 104 transitions, 866 flow. Second operand 8 states and 94 transitions. [2022-12-12 15:41:03,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 189 transitions, 1680 flow [2022-12-12 15:41:03,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 189 transitions, 1676 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 15:41:03,264 INFO L231 Difference]: Finished difference. Result has 66 places, 137 transitions, 1407 flow [2022-12-12 15:41:03,264 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1407, PETRI_PLACES=66, PETRI_TRANSITIONS=137} [2022-12-12 15:41:03,265 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2022-12-12 15:41:03,266 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 137 transitions, 1407 flow [2022-12-12 15:41:03,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:03,266 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:03,266 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:03,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 15:41:03,266 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:03,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1620917726, now seen corresponding path program 8 times [2022-12-12 15:41:03,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:03,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134838410] [2022-12-12 15:41:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:03,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:03,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:03,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134838410] [2022-12-12 15:41:03,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134838410] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:03,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:03,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 15:41:03,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543937676] [2022-12-12 15:41:03,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:03,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 15:41:03,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:03,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 15:41:03,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-12 15:41:03,474 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:03,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 137 transitions, 1407 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:03,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:03,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:03,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:03,867 INFO L130 PetriNetUnfolder]: 1345/2238 cut-off events. [2022-12-12 15:41:03,867 INFO L131 PetriNetUnfolder]: For 6643/6643 co-relation queries the response was YES. [2022-12-12 15:41:03,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10913 conditions, 2238 events. 1345/2238 cut-off events. For 6643/6643 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 12018 event pairs, 92 based on Foata normal form. 28/2266 useless extension candidates. Maximal degree in co-relation 10896. Up to 771 conditions per place. [2022-12-12 15:41:03,896 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 74 selfloop transitions, 106 changer transitions 3/183 dead transitions. [2022-12-12 15:41:03,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 183 transitions, 1991 flow [2022-12-12 15:41:03,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 15:41:03,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 15:41:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2022-12-12 15:41:03,898 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4326923076923077 [2022-12-12 15:41:03,898 INFO L175 Difference]: Start difference. First operand has 66 places, 137 transitions, 1407 flow. Second operand 8 states and 90 transitions. [2022-12-12 15:41:03,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 183 transitions, 1991 flow [2022-12-12 15:41:03,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 183 transitions, 1949 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-12-12 15:41:03,932 INFO L231 Difference]: Finished difference. Result has 72 places, 144 transitions, 1698 flow [2022-12-12 15:41:03,933 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1698, PETRI_PLACES=72, PETRI_TRANSITIONS=144} [2022-12-12 15:41:03,934 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 33 predicate places. [2022-12-12 15:41:03,934 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 144 transitions, 1698 flow [2022-12-12 15:41:03,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:03,935 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:03,935 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:03,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 15:41:03,935 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:03,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:03,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1951870196, now seen corresponding path program 9 times [2022-12-12 15:41:03,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:03,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12544898] [2022-12-12 15:41:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:03,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:04,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:04,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12544898] [2022-12-12 15:41:04,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12544898] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:04,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:04,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 15:41:04,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998072676] [2022-12-12 15:41:04,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:04,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 15:41:04,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:04,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 15:41:04,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-12 15:41:04,207 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:04,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 144 transitions, 1698 flow. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:04,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:04,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:04,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:04,627 INFO L130 PetriNetUnfolder]: 1079/1960 cut-off events. [2022-12-12 15:41:04,627 INFO L131 PetriNetUnfolder]: For 6270/6270 co-relation queries the response was YES. [2022-12-12 15:41:04,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10047 conditions, 1960 events. 1079/1960 cut-off events. For 6270/6270 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 11382 event pairs, 16 based on Foata normal form. 100/2060 useless extension candidates. Maximal degree in co-relation 10029. Up to 783 conditions per place. [2022-12-12 15:41:04,645 INFO L137 encePairwiseOnDemand]: 16/26 looper letters, 88 selfloop transitions, 143 changer transitions 6/237 dead transitions. [2022-12-12 15:41:04,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 237 transitions, 2728 flow [2022-12-12 15:41:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 15:41:04,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 15:41:04,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2022-12-12 15:41:04,647 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2022-12-12 15:41:04,647 INFO L175 Difference]: Start difference. First operand has 72 places, 144 transitions, 1698 flow. Second operand 10 states and 118 transitions. [2022-12-12 15:41:04,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 237 transitions, 2728 flow [2022-12-12 15:41:04,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 237 transitions, 2548 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-12-12 15:41:04,674 INFO L231 Difference]: Finished difference. Result has 77 places, 174 transitions, 2305 flow [2022-12-12 15:41:04,675 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2305, PETRI_PLACES=77, PETRI_TRANSITIONS=174} [2022-12-12 15:41:04,675 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 38 predicate places. [2022-12-12 15:41:04,675 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 174 transitions, 2305 flow [2022-12-12 15:41:04,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:04,676 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:04,676 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:04,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 15:41:04,676 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:04,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:04,677 INFO L85 PathProgramCache]: Analyzing trace with hash 586695180, now seen corresponding path program 10 times [2022-12-12 15:41:04,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:04,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418065640] [2022-12-12 15:41:04,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:04,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:04,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:04,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:04,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418065640] [2022-12-12 15:41:04,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418065640] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:04,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:04,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:04,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984134729] [2022-12-12 15:41:04,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:04,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:04,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:04,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:04,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:04,864 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:04,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 174 transitions, 2305 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:04,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:04,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:04,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:05,396 INFO L130 PetriNetUnfolder]: 1142/2097 cut-off events. [2022-12-12 15:41:05,396 INFO L131 PetriNetUnfolder]: For 9225/9225 co-relation queries the response was YES. [2022-12-12 15:41:05,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12559 conditions, 2097 events. 1142/2097 cut-off events. For 9225/9225 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 12716 event pairs, 16 based on Foata normal form. 40/2137 useless extension candidates. Maximal degree in co-relation 12540. Up to 772 conditions per place. [2022-12-12 15:41:05,411 INFO L137 encePairwiseOnDemand]: 16/26 looper letters, 102 selfloop transitions, 161 changer transitions 10/273 dead transitions. [2022-12-12 15:41:05,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 273 transitions, 3604 flow [2022-12-12 15:41:05,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 15:41:05,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 15:41:05,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2022-12-12 15:41:05,413 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2022-12-12 15:41:05,414 INFO L175 Difference]: Start difference. First operand has 77 places, 174 transitions, 2305 flow. Second operand 13 states and 143 transitions. [2022-12-12 15:41:05,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 273 transitions, 3604 flow [2022-12-12 15:41:05,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 273 transitions, 3480 flow, removed 47 selfloop flow, removed 4 redundant places. [2022-12-12 15:41:05,453 INFO L231 Difference]: Finished difference. Result has 87 places, 192 transitions, 2854 flow [2022-12-12 15:41:05,454 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2854, PETRI_PLACES=87, PETRI_TRANSITIONS=192} [2022-12-12 15:41:05,454 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 48 predicate places. [2022-12-12 15:41:05,454 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 192 transitions, 2854 flow [2022-12-12 15:41:05,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:05,455 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:05,455 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:05,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 15:41:05,455 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:05,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:05,456 INFO L85 PathProgramCache]: Analyzing trace with hash -949093900, now seen corresponding path program 11 times [2022-12-12 15:41:05,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:05,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619082237] [2022-12-12 15:41:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:05,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:05,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:05,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619082237] [2022-12-12 15:41:05,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619082237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:05,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:05,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 15:41:05,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652503372] [2022-12-12 15:41:05,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:05,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 15:41:05,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:05,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 15:41:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-12 15:41:05,656 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:05,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 192 transitions, 2854 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:05,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:05,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:05,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:06,041 INFO L130 PetriNetUnfolder]: 1197/2204 cut-off events. [2022-12-12 15:41:06,042 INFO L131 PetriNetUnfolder]: For 11656/11656 co-relation queries the response was YES. [2022-12-12 15:41:06,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14498 conditions, 2204 events. 1197/2204 cut-off events. For 11656/11656 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 13519 event pairs, 100 based on Foata normal form. 20/2224 useless extension candidates. Maximal degree in co-relation 14477. Up to 1844 conditions per place. [2022-12-12 15:41:06,065 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 173 selfloop transitions, 74 changer transitions 4/251 dead transitions. [2022-12-12 15:41:06,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 251 transitions, 3927 flow [2022-12-12 15:41:06,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 15:41:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 15:41:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2022-12-12 15:41:06,066 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3894230769230769 [2022-12-12 15:41:06,067 INFO L175 Difference]: Start difference. First operand has 87 places, 192 transitions, 2854 flow. Second operand 8 states and 81 transitions. [2022-12-12 15:41:06,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 251 transitions, 3927 flow [2022-12-12 15:41:06,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 251 transitions, 3661 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-12-12 15:41:06,122 INFO L231 Difference]: Finished difference. Result has 89 places, 212 transitions, 3202 flow [2022-12-12 15:41:06,123 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2591, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3202, PETRI_PLACES=89, PETRI_TRANSITIONS=212} [2022-12-12 15:41:06,123 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 50 predicate places. [2022-12-12 15:41:06,123 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 212 transitions, 3202 flow [2022-12-12 15:41:06,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:06,124 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:06,124 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:06,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 15:41:06,124 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:06,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:06,125 INFO L85 PathProgramCache]: Analyzing trace with hash -234802398, now seen corresponding path program 12 times [2022-12-12 15:41:06,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:06,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696006386] [2022-12-12 15:41:06,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:06,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:06,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:06,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696006386] [2022-12-12 15:41:06,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696006386] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:06,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:06,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 15:41:06,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2955055] [2022-12-12 15:41:06,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:06,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 15:41:06,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:06,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 15:41:06,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-12 15:41:06,325 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:06,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 212 transitions, 3202 flow. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:06,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:06,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:06,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:06,802 INFO L130 PetriNetUnfolder]: 1179/2206 cut-off events. [2022-12-12 15:41:06,802 INFO L131 PetriNetUnfolder]: For 12135/12135 co-relation queries the response was YES. [2022-12-12 15:41:06,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14226 conditions, 2206 events. 1179/2206 cut-off events. For 12135/12135 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 13863 event pairs, 20 based on Foata normal form. 48/2254 useless extension candidates. Maximal degree in co-relation 14203. Up to 861 conditions per place. [2022-12-12 15:41:06,825 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 78 selfloop transitions, 179 changer transitions 6/263 dead transitions. [2022-12-12 15:41:06,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 263 transitions, 3934 flow [2022-12-12 15:41:06,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 15:41:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 15:41:06,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2022-12-12 15:41:06,826 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2022-12-12 15:41:06,826 INFO L175 Difference]: Start difference. First operand has 89 places, 212 transitions, 3202 flow. Second operand 10 states and 115 transitions. [2022-12-12 15:41:06,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 263 transitions, 3934 flow [2022-12-12 15:41:06,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 263 transitions, 3905 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-12 15:41:06,886 INFO L231 Difference]: Finished difference. Result has 94 places, 209 transitions, 3487 flow [2022-12-12 15:41:06,886 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3017, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3487, PETRI_PLACES=94, PETRI_TRANSITIONS=209} [2022-12-12 15:41:06,887 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 55 predicate places. [2022-12-12 15:41:06,887 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 209 transitions, 3487 flow [2022-12-12 15:41:06,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:06,887 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:06,887 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:06,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-12 15:41:06,887 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:06,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:06,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2023887052, now seen corresponding path program 13 times [2022-12-12 15:41:06,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:06,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053675531] [2022-12-12 15:41:06,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:06,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:07,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:07,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053675531] [2022-12-12 15:41:07,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053675531] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:07,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:07,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 15:41:07,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002216055] [2022-12-12 15:41:07,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:07,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 15:41:07,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:07,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 15:41:07,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-12 15:41:07,089 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:07,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 209 transitions, 3487 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:07,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:07,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:07,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:07,504 INFO L130 PetriNetUnfolder]: 1132/2129 cut-off events. [2022-12-12 15:41:07,504 INFO L131 PetriNetUnfolder]: For 13161/13161 co-relation queries the response was YES. [2022-12-12 15:41:07,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14817 conditions, 2129 events. 1132/2129 cut-off events. For 13161/13161 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 13370 event pairs, 124 based on Foata normal form. 22/2151 useless extension candidates. Maximal degree in co-relation 14793. Up to 2011 conditions per place. [2022-12-12 15:41:07,526 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 214 selfloop transitions, 23 changer transitions 5/242 dead transitions. [2022-12-12 15:41:07,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 242 transitions, 4153 flow [2022-12-12 15:41:07,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 15:41:07,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 15:41:07,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 72 transitions. [2022-12-12 15:41:07,527 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2022-12-12 15:41:07,527 INFO L175 Difference]: Start difference. First operand has 94 places, 209 transitions, 3487 flow. Second operand 8 states and 72 transitions. [2022-12-12 15:41:07,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 242 transitions, 4153 flow [2022-12-12 15:41:07,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 242 transitions, 3779 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-12-12 15:41:07,594 INFO L231 Difference]: Finished difference. Result has 94 places, 209 transitions, 3188 flow [2022-12-12 15:41:07,595 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3087, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3188, PETRI_PLACES=94, PETRI_TRANSITIONS=209} [2022-12-12 15:41:07,596 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 55 predicate places. [2022-12-12 15:41:07,596 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 209 transitions, 3188 flow [2022-12-12 15:41:07,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:07,597 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:07,597 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:07,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-12 15:41:07,597 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:07,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:07,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1942032804, now seen corresponding path program 14 times [2022-12-12 15:41:07,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:07,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332040000] [2022-12-12 15:41:07,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:07,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:07,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:07,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332040000] [2022-12-12 15:41:07,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332040000] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:07,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:07,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 15:41:07,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155469046] [2022-12-12 15:41:07,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:07,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 15:41:07,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:07,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 15:41:07,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-12 15:41:07,803 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:07,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 209 transitions, 3188 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:07,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:07,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:07,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:08,218 INFO L130 PetriNetUnfolder]: 1102/2087 cut-off events. [2022-12-12 15:41:08,218 INFO L131 PetriNetUnfolder]: For 11656/11656 co-relation queries the response was YES. [2022-12-12 15:41:08,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13315 conditions, 2087 events. 1102/2087 cut-off events. For 11656/11656 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 13061 event pairs, 118 based on Foata normal form. 18/2105 useless extension candidates. Maximal degree in co-relation 13291. Up to 1977 conditions per place. [2022-12-12 15:41:08,237 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 202 selfloop transitions, 19 changer transitions 13/234 dead transitions. [2022-12-12 15:41:08,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 234 transitions, 3782 flow [2022-12-12 15:41:08,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 15:41:08,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 15:41:08,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 66 transitions. [2022-12-12 15:41:08,238 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3173076923076923 [2022-12-12 15:41:08,238 INFO L175 Difference]: Start difference. First operand has 94 places, 209 transitions, 3188 flow. Second operand 8 states and 66 transitions. [2022-12-12 15:41:08,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 234 transitions, 3782 flow [2022-12-12 15:41:08,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 234 transitions, 3748 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-12 15:41:08,305 INFO L231 Difference]: Finished difference. Result has 98 places, 202 transitions, 3080 flow [2022-12-12 15:41:08,306 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3095, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3080, PETRI_PLACES=98, PETRI_TRANSITIONS=202} [2022-12-12 15:41:08,307 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2022-12-12 15:41:08,307 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 202 transitions, 3080 flow [2022-12-12 15:41:08,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:08,307 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:08,307 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:08,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-12 15:41:08,308 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:08,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:08,308 INFO L85 PathProgramCache]: Analyzing trace with hash 322684626, now seen corresponding path program 15 times [2022-12-12 15:41:08,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:08,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249207380] [2022-12-12 15:41:08,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:08,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:08,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:08,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:08,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249207380] [2022-12-12 15:41:08,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249207380] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:08,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:08,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:08,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761392237] [2022-12-12 15:41:08,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:08,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:08,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:08,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:08,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:08,535 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:08,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 202 transitions, 3080 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:08,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:08,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:08,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:09,050 INFO L130 PetriNetUnfolder]: 1078/2069 cut-off events. [2022-12-12 15:41:09,050 INFO L131 PetriNetUnfolder]: For 11734/11734 co-relation queries the response was YES. [2022-12-12 15:41:09,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13149 conditions, 2069 events. 1078/2069 cut-off events. For 11734/11734 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 13137 event pairs, 24 based on Foata normal form. 38/2107 useless extension candidates. Maximal degree in co-relation 13124. Up to 757 conditions per place. [2022-12-12 15:41:09,097 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 83 selfloop transitions, 179 changer transitions 12/274 dead transitions. [2022-12-12 15:41:09,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 274 transitions, 4126 flow [2022-12-12 15:41:09,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 15:41:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 15:41:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 128 transitions. [2022-12-12 15:41:09,099 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.378698224852071 [2022-12-12 15:41:09,099 INFO L175 Difference]: Start difference. First operand has 98 places, 202 transitions, 3080 flow. Second operand 13 states and 128 transitions. [2022-12-12 15:41:09,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 274 transitions, 4126 flow [2022-12-12 15:41:09,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 274 transitions, 4063 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-12-12 15:41:09,155 INFO L231 Difference]: Finished difference. Result has 102 places, 209 transitions, 3458 flow [2022-12-12 15:41:09,155 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3017, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3458, PETRI_PLACES=102, PETRI_TRANSITIONS=209} [2022-12-12 15:41:09,155 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 63 predicate places. [2022-12-12 15:41:09,156 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 209 transitions, 3458 flow [2022-12-12 15:41:09,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:09,156 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:09,156 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:09,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-12 15:41:09,156 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:09,157 INFO L85 PathProgramCache]: Analyzing trace with hash -267454318, now seen corresponding path program 16 times [2022-12-12 15:41:09,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:09,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281384244] [2022-12-12 15:41:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:09,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:09,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:09,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:09,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281384244] [2022-12-12 15:41:09,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281384244] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:09,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:09,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:09,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732052800] [2022-12-12 15:41:09,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:09,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:09,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:09,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:09,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:09,328 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:09,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 209 transitions, 3458 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:09,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:09,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:09,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:09,855 INFO L130 PetriNetUnfolder]: 987/1944 cut-off events. [2022-12-12 15:41:09,855 INFO L131 PetriNetUnfolder]: For 12899/12899 co-relation queries the response was YES. [2022-12-12 15:41:09,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13281 conditions, 1944 events. 987/1944 cut-off events. For 12899/12899 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 12651 event pairs, 28 based on Foata normal form. 66/2010 useless extension candidates. Maximal degree in co-relation 13256. Up to 702 conditions per place. [2022-12-12 15:41:09,870 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 79 selfloop transitions, 173 changer transitions 27/279 dead transitions. [2022-12-12 15:41:09,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 279 transitions, 4556 flow [2022-12-12 15:41:09,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 15:41:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 15:41:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 128 transitions. [2022-12-12 15:41:09,872 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.378698224852071 [2022-12-12 15:41:09,872 INFO L175 Difference]: Start difference. First operand has 102 places, 209 transitions, 3458 flow. Second operand 13 states and 128 transitions. [2022-12-12 15:41:09,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 279 transitions, 4556 flow [2022-12-12 15:41:09,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 279 transitions, 4384 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-12-12 15:41:09,921 INFO L231 Difference]: Finished difference. Result has 106 places, 202 transitions, 3554 flow [2022-12-12 15:41:09,921 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3158, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3554, PETRI_PLACES=106, PETRI_TRANSITIONS=202} [2022-12-12 15:41:09,923 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 67 predicate places. [2022-12-12 15:41:09,923 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 202 transitions, 3554 flow [2022-12-12 15:41:09,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:09,923 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:09,923 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:09,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-12 15:41:09,923 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:09,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:09,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1558573010, now seen corresponding path program 17 times [2022-12-12 15:41:09,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:09,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999914159] [2022-12-12 15:41:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:09,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:10,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:10,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999914159] [2022-12-12 15:41:10,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999914159] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:10,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:10,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:10,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998999020] [2022-12-12 15:41:10,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:10,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:10,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:10,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:10,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:10,136 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:10,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 202 transitions, 3554 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:10,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:10,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:10,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:10,530 INFO L130 PetriNetUnfolder]: 755/1472 cut-off events. [2022-12-12 15:41:10,530 INFO L131 PetriNetUnfolder]: For 12426/12426 co-relation queries the response was YES. [2022-12-12 15:41:10,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10344 conditions, 1472 events. 755/1472 cut-off events. For 12426/12426 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8590 event pairs, 58 based on Foata normal form. 2/1474 useless extension candidates. Maximal degree in co-relation 10320. Up to 726 conditions per place. [2022-12-12 15:41:10,540 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 117 selfloop transitions, 134 changer transitions 3/254 dead transitions. [2022-12-12 15:41:10,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 254 transitions, 4425 flow [2022-12-12 15:41:10,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 15:41:10,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 15:41:10,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2022-12-12 15:41:10,542 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.32867132867132864 [2022-12-12 15:41:10,542 INFO L175 Difference]: Start difference. First operand has 106 places, 202 transitions, 3554 flow. Second operand 11 states and 94 transitions. [2022-12-12 15:41:10,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 254 transitions, 4425 flow [2022-12-12 15:41:10,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 254 transitions, 4300 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-12-12 15:41:10,579 INFO L231 Difference]: Finished difference. Result has 111 places, 215 transitions, 4106 flow [2022-12-12 15:41:10,579 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3442, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4106, PETRI_PLACES=111, PETRI_TRANSITIONS=215} [2022-12-12 15:41:10,579 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 72 predicate places. [2022-12-12 15:41:10,580 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 215 transitions, 4106 flow [2022-12-12 15:41:10,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:10,580 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:10,580 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:10,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-12 15:41:10,580 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:10,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:10,581 INFO L85 PathProgramCache]: Analyzing trace with hash 364876888, now seen corresponding path program 18 times [2022-12-12 15:41:10,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:10,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081434306] [2022-12-12 15:41:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:10,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:10,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:10,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081434306] [2022-12-12 15:41:10,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081434306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:10,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:10,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:10,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367841311] [2022-12-12 15:41:10,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:10,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:10,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:10,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:10,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:10,781 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:10,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 215 transitions, 4106 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:10,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:10,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:10,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:11,202 INFO L130 PetriNetUnfolder]: 745/1454 cut-off events. [2022-12-12 15:41:11,202 INFO L131 PetriNetUnfolder]: For 14187/14187 co-relation queries the response was YES. [2022-12-12 15:41:11,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10930 conditions, 1454 events. 745/1454 cut-off events. For 14187/14187 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8454 event pairs, 102 based on Foata normal form. 4/1458 useless extension candidates. Maximal degree in co-relation 10904. Up to 1359 conditions per place. [2022-12-12 15:41:11,214 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 208 selfloop transitions, 24 changer transitions 8/240 dead transitions. [2022-12-12 15:41:11,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 240 transitions, 4659 flow [2022-12-12 15:41:11,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 15:41:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 15:41:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 74 transitions. [2022-12-12 15:41:11,215 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.21893491124260356 [2022-12-12 15:41:11,215 INFO L175 Difference]: Start difference. First operand has 111 places, 215 transitions, 4106 flow. Second operand 13 states and 74 transitions. [2022-12-12 15:41:11,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 240 transitions, 4659 flow [2022-12-12 15:41:11,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 240 transitions, 4569 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-12-12 15:41:11,257 INFO L231 Difference]: Finished difference. Result has 118 places, 212 transitions, 3996 flow [2022-12-12 15:41:11,257 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=4016, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3996, PETRI_PLACES=118, PETRI_TRANSITIONS=212} [2022-12-12 15:41:11,257 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 79 predicate places. [2022-12-12 15:41:11,257 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 212 transitions, 3996 flow [2022-12-12 15:41:11,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:11,259 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:11,259 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:11,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-12 15:41:11,260 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:11,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:11,260 INFO L85 PathProgramCache]: Analyzing trace with hash 793923998, now seen corresponding path program 19 times [2022-12-12 15:41:11,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:11,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062413279] [2022-12-12 15:41:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:11,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:11,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:11,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062413279] [2022-12-12 15:41:11,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062413279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:11,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:11,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:11,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857138589] [2022-12-12 15:41:11,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:11,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:11,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:11,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:11,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:11,438 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:11,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 212 transitions, 3996 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:11,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:11,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:11,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:11,807 INFO L130 PetriNetUnfolder]: 741/1448 cut-off events. [2022-12-12 15:41:11,807 INFO L131 PetriNetUnfolder]: For 14081/14081 co-relation queries the response was YES. [2022-12-12 15:41:11,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10709 conditions, 1448 events. 741/1448 cut-off events. For 14081/14081 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8423 event pairs, 102 based on Foata normal form. 2/1450 useless extension candidates. Maximal degree in co-relation 10683. Up to 1374 conditions per place. [2022-12-12 15:41:11,821 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 209 selfloop transitions, 17 changer transitions 10/236 dead transitions. [2022-12-12 15:41:11,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 236 transitions, 4584 flow [2022-12-12 15:41:11,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 15:41:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 15:41:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 67 transitions. [2022-12-12 15:41:11,822 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.21474358974358973 [2022-12-12 15:41:11,822 INFO L175 Difference]: Start difference. First operand has 118 places, 212 transitions, 3996 flow. Second operand 12 states and 67 transitions. [2022-12-12 15:41:11,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 236 transitions, 4584 flow [2022-12-12 15:41:11,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 236 transitions, 4534 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-12-12 15:41:11,883 INFO L231 Difference]: Finished difference. Result has 120 places, 210 transitions, 3977 flow [2022-12-12 15:41:11,884 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3952, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3977, PETRI_PLACES=120, PETRI_TRANSITIONS=210} [2022-12-12 15:41:11,884 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 81 predicate places. [2022-12-12 15:41:11,884 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 210 transitions, 3977 flow [2022-12-12 15:41:11,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:11,884 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:11,885 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:11,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-12 15:41:11,885 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:11,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:11,885 INFO L85 PathProgramCache]: Analyzing trace with hash 388316580, now seen corresponding path program 20 times [2022-12-12 15:41:11,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:11,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285447905] [2022-12-12 15:41:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:11,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:12,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:12,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285447905] [2022-12-12 15:41:12,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285447905] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:12,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:12,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:12,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785010032] [2022-12-12 15:41:12,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:12,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:12,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:12,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:12,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:12,093 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:12,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 210 transitions, 3977 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:12,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:12,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:12,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:12,470 INFO L130 PetriNetUnfolder]: 732/1431 cut-off events. [2022-12-12 15:41:12,470 INFO L131 PetriNetUnfolder]: For 14163/14163 co-relation queries the response was YES. [2022-12-12 15:41:12,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10604 conditions, 1431 events. 732/1431 cut-off events. For 14163/14163 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8310 event pairs, 102 based on Foata normal form. 4/1435 useless extension candidates. Maximal degree in co-relation 10578. Up to 1363 conditions per place. [2022-12-12 15:41:12,483 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 204 selfloop transitions, 16 changer transitions 7/227 dead transitions. [2022-12-12 15:41:12,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 227 transitions, 4504 flow [2022-12-12 15:41:12,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 15:41:12,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 15:41:12,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 60 transitions. [2022-12-12 15:41:12,484 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.23076923076923078 [2022-12-12 15:41:12,485 INFO L175 Difference]: Start difference. First operand has 120 places, 210 transitions, 3977 flow. Second operand 10 states and 60 transitions. [2022-12-12 15:41:12,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 227 transitions, 4504 flow [2022-12-12 15:41:12,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 227 transitions, 4458 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-12-12 15:41:12,526 INFO L231 Difference]: Finished difference. Result has 116 places, 206 transitions, 3906 flow [2022-12-12 15:41:12,526 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3919, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3906, PETRI_PLACES=116, PETRI_TRANSITIONS=206} [2022-12-12 15:41:12,527 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2022-12-12 15:41:12,527 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 206 transitions, 3906 flow [2022-12-12 15:41:12,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:12,527 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:12,527 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:12,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-12 15:41:12,527 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:12,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:12,528 INFO L85 PathProgramCache]: Analyzing trace with hash 223280024, now seen corresponding path program 21 times [2022-12-12 15:41:12,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:12,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500790458] [2022-12-12 15:41:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:12,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:12,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:12,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500790458] [2022-12-12 15:41:12,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500790458] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:12,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:12,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:12,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731639574] [2022-12-12 15:41:12,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:12,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:12,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:12,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:12,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:12,732 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:12,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 206 transitions, 3906 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:12,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:12,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:12,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:13,096 INFO L130 PetriNetUnfolder]: 728/1419 cut-off events. [2022-12-12 15:41:13,096 INFO L131 PetriNetUnfolder]: For 14539/14539 co-relation queries the response was YES. [2022-12-12 15:41:13,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10652 conditions, 1419 events. 728/1419 cut-off events. For 14539/14539 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 8194 event pairs, 100 based on Foata normal form. 4/1423 useless extension candidates. Maximal degree in co-relation 10626. Up to 1351 conditions per place. [2022-12-12 15:41:13,108 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 199 selfloop transitions, 18 changer transitions 8/225 dead transitions. [2022-12-12 15:41:13,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 225 transitions, 4434 flow [2022-12-12 15:41:13,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 15:41:13,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 15:41:13,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 64 transitions. [2022-12-12 15:41:13,109 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.22377622377622378 [2022-12-12 15:41:13,109 INFO L175 Difference]: Start difference. First operand has 116 places, 206 transitions, 3906 flow. Second operand 11 states and 64 transitions. [2022-12-12 15:41:13,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 225 transitions, 4434 flow [2022-12-12 15:41:13,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 225 transitions, 4386 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-12-12 15:41:13,150 INFO L231 Difference]: Finished difference. Result has 116 places, 202 transitions, 3800 flow [2022-12-12 15:41:13,150 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3858, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3800, PETRI_PLACES=116, PETRI_TRANSITIONS=202} [2022-12-12 15:41:13,150 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2022-12-12 15:41:13,150 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 202 transitions, 3800 flow [2022-12-12 15:41:13,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:13,151 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:13,151 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:13,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-12 15:41:13,151 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:13,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:13,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1979681944, now seen corresponding path program 22 times [2022-12-12 15:41:13,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:13,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528076667] [2022-12-12 15:41:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:13,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:13,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:13,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528076667] [2022-12-12 15:41:13,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528076667] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:13,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:13,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:13,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249428630] [2022-12-12 15:41:13,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:13,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:13,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:13,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:13,359 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:13,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 202 transitions, 3800 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:13,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:13,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:13,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:13,700 INFO L130 PetriNetUnfolder]: 716/1399 cut-off events. [2022-12-12 15:41:13,700 INFO L131 PetriNetUnfolder]: For 15599/15599 co-relation queries the response was YES. [2022-12-12 15:41:13,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10605 conditions, 1399 events. 716/1399 cut-off events. For 15599/15599 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 8058 event pairs, 50 based on Foata normal form. 4/1403 useless extension candidates. Maximal degree in co-relation 10578. Up to 724 conditions per place. [2022-12-12 15:41:13,712 INFO L137 encePairwiseOnDemand]: 16/26 looper letters, 111 selfloop transitions, 114 changer transitions 12/237 dead transitions. [2022-12-12 15:41:13,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 237 transitions, 4438 flow [2022-12-12 15:41:13,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 15:41:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 15:41:13,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2022-12-12 15:41:13,713 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2022-12-12 15:41:13,713 INFO L175 Difference]: Start difference. First operand has 116 places, 202 transitions, 3800 flow. Second operand 10 states and 90 transitions. [2022-12-12 15:41:13,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 237 transitions, 4438 flow [2022-12-12 15:41:13,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 237 transitions, 4399 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-12-12 15:41:13,757 INFO L231 Difference]: Finished difference. Result has 117 places, 193 transitions, 3875 flow [2022-12-12 15:41:13,758 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3748, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3875, PETRI_PLACES=117, PETRI_TRANSITIONS=193} [2022-12-12 15:41:13,758 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 78 predicate places. [2022-12-12 15:41:13,758 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 193 transitions, 3875 flow [2022-12-12 15:41:13,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:13,758 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:13,759 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:13,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-12 15:41:13,759 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:13,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:13,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2041862562, now seen corresponding path program 23 times [2022-12-12 15:41:13,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:13,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054783832] [2022-12-12 15:41:13,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:13,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:13,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:13,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054783832] [2022-12-12 15:41:13,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054783832] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:13,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:13,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:13,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639936861] [2022-12-12 15:41:13,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:13,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:13,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:13,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:13,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:13,948 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:13,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 193 transitions, 3875 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:13,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:13,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:13,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:14,254 INFO L130 PetriNetUnfolder]: 701/1360 cut-off events. [2022-12-12 15:41:14,255 INFO L131 PetriNetUnfolder]: For 16246/16246 co-relation queries the response was YES. [2022-12-12 15:41:14,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10848 conditions, 1360 events. 701/1360 cut-off events. For 16246/16246 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7734 event pairs, 98 based on Foata normal form. 2/1362 useless extension candidates. Maximal degree in co-relation 10821. Up to 1323 conditions per place. [2022-12-12 15:41:14,267 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 192 selfloop transitions, 7 changer transitions 7/206 dead transitions. [2022-12-12 15:41:14,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 206 transitions, 4317 flow [2022-12-12 15:41:14,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 15:41:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 15:41:14,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 50 transitions. [2022-12-12 15:41:14,268 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.21367521367521367 [2022-12-12 15:41:14,268 INFO L175 Difference]: Start difference. First operand has 117 places, 193 transitions, 3875 flow. Second operand 9 states and 50 transitions. [2022-12-12 15:41:14,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 206 transitions, 4317 flow [2022-12-12 15:41:14,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 206 transitions, 4125 flow, removed 5 selfloop flow, removed 8 redundant places. [2022-12-12 15:41:14,316 INFO L231 Difference]: Finished difference. Result has 111 places, 189 transitions, 3625 flow [2022-12-12 15:41:14,316 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3671, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3625, PETRI_PLACES=111, PETRI_TRANSITIONS=189} [2022-12-12 15:41:14,317 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 72 predicate places. [2022-12-12 15:41:14,317 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 189 transitions, 3625 flow [2022-12-12 15:41:14,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:14,318 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:14,318 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:14,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-12 15:41:14,318 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:14,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:14,318 INFO L85 PathProgramCache]: Analyzing trace with hash 551123916, now seen corresponding path program 24 times [2022-12-12 15:41:14,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:14,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447271304] [2022-12-12 15:41:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:14,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:14,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:14,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447271304] [2022-12-12 15:41:14,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447271304] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:14,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:14,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:14,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274404852] [2022-12-12 15:41:14,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:14,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:14,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:14,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:14,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:14,526 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:14,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 189 transitions, 3625 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:14,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:14,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:14,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:14,808 INFO L130 PetriNetUnfolder]: 697/1352 cut-off events. [2022-12-12 15:41:14,808 INFO L131 PetriNetUnfolder]: For 14681/14681 co-relation queries the response was YES. [2022-12-12 15:41:14,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10231 conditions, 1352 events. 697/1352 cut-off events. For 14681/14681 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7696 event pairs, 102 based on Foata normal form. 4/1356 useless extension candidates. Maximal degree in co-relation 10205. Up to 1315 conditions per place. [2022-12-12 15:41:14,835 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 190 selfloop transitions, 8 changer transitions 5/203 dead transitions. [2022-12-12 15:41:14,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 203 transitions, 4073 flow [2022-12-12 15:41:14,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 15:41:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 15:41:14,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 50 transitions. [2022-12-12 15:41:14,836 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.21367521367521367 [2022-12-12 15:41:14,836 INFO L175 Difference]: Start difference. First operand has 111 places, 189 transitions, 3625 flow. Second operand 9 states and 50 transitions. [2022-12-12 15:41:14,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 203 transitions, 4073 flow [2022-12-12 15:41:14,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 203 transitions, 4047 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-12-12 15:41:14,871 INFO L231 Difference]: Finished difference. Result has 107 places, 187 transitions, 3568 flow [2022-12-12 15:41:14,871 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3599, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3568, PETRI_PLACES=107, PETRI_TRANSITIONS=187} [2022-12-12 15:41:14,872 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 68 predicate places. [2022-12-12 15:41:14,872 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 187 transitions, 3568 flow [2022-12-12 15:41:14,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:14,872 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:14,872 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:14,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-12 15:41:14,872 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:14,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:14,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1967876362, now seen corresponding path program 25 times [2022-12-12 15:41:14,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:14,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265830404] [2022-12-12 15:41:14,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:14,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:15,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:15,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265830404] [2022-12-12 15:41:15,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265830404] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:15,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:15,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:15,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260502319] [2022-12-12 15:41:15,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:15,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:15,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:15,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:15,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:15,035 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:15,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 187 transitions, 3568 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:15,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:15,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:15,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:15,386 INFO L130 PetriNetUnfolder]: 695/1346 cut-off events. [2022-12-12 15:41:15,386 INFO L131 PetriNetUnfolder]: For 15433/15433 co-relation queries the response was YES. [2022-12-12 15:41:15,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10183 conditions, 1346 events. 695/1346 cut-off events. For 15433/15433 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7589 event pairs, 58 based on Foata normal form. 2/1348 useless extension candidates. Maximal degree in co-relation 10157. Up to 714 conditions per place. [2022-12-12 15:41:15,398 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 99 selfloop transitions, 105 changer transitions 13/217 dead transitions. [2022-12-12 15:41:15,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 217 transitions, 4169 flow [2022-12-12 15:41:15,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 15:41:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 15:41:15,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 80 transitions. [2022-12-12 15:41:15,399 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3418803418803419 [2022-12-12 15:41:15,399 INFO L175 Difference]: Start difference. First operand has 107 places, 187 transitions, 3568 flow. Second operand 9 states and 80 transitions. [2022-12-12 15:41:15,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 217 transitions, 4169 flow [2022-12-12 15:41:15,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 217 transitions, 4127 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-12-12 15:41:15,439 INFO L231 Difference]: Finished difference. Result has 105 places, 182 transitions, 3747 flow [2022-12-12 15:41:15,439 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3503, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3747, PETRI_PLACES=105, PETRI_TRANSITIONS=182} [2022-12-12 15:41:15,440 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 66 predicate places. [2022-12-12 15:41:15,440 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 182 transitions, 3747 flow [2022-12-12 15:41:15,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:15,440 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:15,440 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:15,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-12 15:41:15,440 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:15,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:15,441 INFO L85 PathProgramCache]: Analyzing trace with hash 583932498, now seen corresponding path program 26 times [2022-12-12 15:41:15,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:15,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924816962] [2022-12-12 15:41:15,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:15,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:15,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:15,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924816962] [2022-12-12 15:41:15,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924816962] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:15,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:15,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 15:41:15,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919012959] [2022-12-12 15:41:15,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:15,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 15:41:15,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:15,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 15:41:15,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-12 15:41:15,602 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:15,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 182 transitions, 3747 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:15,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:15,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:15,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:15,875 INFO L130 PetriNetUnfolder]: 590/1173 cut-off events. [2022-12-12 15:41:15,876 INFO L131 PetriNetUnfolder]: For 15659/15659 co-relation queries the response was YES. [2022-12-12 15:41:15,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9221 conditions, 1173 events. 590/1173 cut-off events. For 15659/15659 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6636 event pairs, 84 based on Foata normal form. 40/1213 useless extension candidates. Maximal degree in co-relation 9196. Up to 1063 conditions per place. [2022-12-12 15:41:15,885 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 174 selfloop transitions, 20 changer transitions 9/203 dead transitions. [2022-12-12 15:41:15,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 203 transitions, 4251 flow [2022-12-12 15:41:15,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 15:41:15,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 15:41:15,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 67 transitions. [2022-12-12 15:41:15,886 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.32211538461538464 [2022-12-12 15:41:15,886 INFO L175 Difference]: Start difference. First operand has 105 places, 182 transitions, 3747 flow. Second operand 8 states and 67 transitions. [2022-12-12 15:41:15,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 203 transitions, 4251 flow [2022-12-12 15:41:15,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 203 transitions, 3636 flow, removed 21 selfloop flow, removed 10 redundant places. [2022-12-12 15:41:15,920 INFO L231 Difference]: Finished difference. Result has 100 places, 175 transitions, 3091 flow [2022-12-12 15:41:15,920 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2829, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3091, PETRI_PLACES=100, PETRI_TRANSITIONS=175} [2022-12-12 15:41:15,920 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 61 predicate places. [2022-12-12 15:41:15,920 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 175 transitions, 3091 flow [2022-12-12 15:41:15,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:15,921 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:15,921 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:15,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-12 15:41:15,921 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:15,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:15,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1179439744, now seen corresponding path program 27 times [2022-12-12 15:41:15,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:15,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474528861] [2022-12-12 15:41:15,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:15,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:16,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:16,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474528861] [2022-12-12 15:41:16,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474528861] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:16,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:16,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:16,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987135548] [2022-12-12 15:41:16,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:16,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:16,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:16,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:16,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:16,131 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:16,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 175 transitions, 3091 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:16,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:16,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:16,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:16,497 INFO L130 PetriNetUnfolder]: 593/1190 cut-off events. [2022-12-12 15:41:16,497 INFO L131 PetriNetUnfolder]: For 10517/10517 co-relation queries the response was YES. [2022-12-12 15:41:16,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8271 conditions, 1190 events. 593/1190 cut-off events. For 10517/10517 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6845 event pairs, 52 based on Foata normal form. 2/1192 useless extension candidates. Maximal degree in co-relation 8244. Up to 605 conditions per place. [2022-12-12 15:41:16,507 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 113 selfloop transitions, 109 changer transitions 3/225 dead transitions. [2022-12-12 15:41:16,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 225 transitions, 3915 flow [2022-12-12 15:41:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 15:41:16,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 15:41:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2022-12-12 15:41:16,508 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.32867132867132864 [2022-12-12 15:41:16,508 INFO L175 Difference]: Start difference. First operand has 100 places, 175 transitions, 3091 flow. Second operand 11 states and 94 transitions. [2022-12-12 15:41:16,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 225 transitions, 3915 flow [2022-12-12 15:41:16,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 225 transitions, 3845 flow, removed 27 selfloop flow, removed 2 redundant places. [2022-12-12 15:41:16,549 INFO L231 Difference]: Finished difference. Result has 113 places, 189 transitions, 3641 flow [2022-12-12 15:41:16,549 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=3033, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3641, PETRI_PLACES=113, PETRI_TRANSITIONS=189} [2022-12-12 15:41:16,550 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 74 predicate places. [2022-12-12 15:41:16,550 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 189 transitions, 3641 flow [2022-12-12 15:41:16,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:16,551 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:16,551 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:16,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-12 15:41:16,551 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:16,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:16,551 INFO L85 PathProgramCache]: Analyzing trace with hash 40086292, now seen corresponding path program 28 times [2022-12-12 15:41:16,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:16,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203851044] [2022-12-12 15:41:16,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:16,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:16,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:16,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:16,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203851044] [2022-12-12 15:41:16,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203851044] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:16,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:16,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 15:41:16,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616716307] [2022-12-12 15:41:16,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:16,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 15:41:16,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:16,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 15:41:16,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-12 15:41:16,703 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:16,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 189 transitions, 3641 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:16,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:16,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:16,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:16,942 INFO L130 PetriNetUnfolder]: 488/1013 cut-off events. [2022-12-12 15:41:16,942 INFO L131 PetriNetUnfolder]: For 12159/12159 co-relation queries the response was YES. [2022-12-12 15:41:16,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7402 conditions, 1013 events. 488/1013 cut-off events. For 12159/12159 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5760 event pairs, 58 based on Foata normal form. 32/1045 useless extension candidates. Maximal degree in co-relation 7370. Up to 785 conditions per place. [2022-12-12 15:41:16,949 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 140 selfloop transitions, 42 changer transitions 16/198 dead transitions. [2022-12-12 15:41:16,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 198 transitions, 3820 flow [2022-12-12 15:41:16,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 15:41:16,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 15:41:16,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 70 transitions. [2022-12-12 15:41:16,951 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.33653846153846156 [2022-12-12 15:41:16,951 INFO L175 Difference]: Start difference. First operand has 113 places, 189 transitions, 3641 flow. Second operand 8 states and 70 transitions. [2022-12-12 15:41:16,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 198 transitions, 3820 flow [2022-12-12 15:41:16,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 198 transitions, 3714 flow, removed 17 selfloop flow, removed 9 redundant places. [2022-12-12 15:41:16,999 INFO L231 Difference]: Finished difference. Result has 113 places, 164 transitions, 3081 flow [2022-12-12 15:41:16,999 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2922, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3081, PETRI_PLACES=113, PETRI_TRANSITIONS=164} [2022-12-12 15:41:17,004 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 74 predicate places. [2022-12-12 15:41:17,004 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 164 transitions, 3081 flow [2022-12-12 15:41:17,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:17,004 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:17,004 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:17,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-12 15:41:17,004 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:17,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:17,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1218614372, now seen corresponding path program 29 times [2022-12-12 15:41:17,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:17,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634208219] [2022-12-12 15:41:17,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:17,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:17,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:17,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634208219] [2022-12-12 15:41:17,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634208219] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:17,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:17,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 15:41:17,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797278668] [2022-12-12 15:41:17,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:17,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 15:41:17,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:17,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 15:41:17,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-12 15:41:17,157 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:17,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 164 transitions, 3081 flow. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:17,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:17,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:17,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:17,399 INFO L130 PetriNetUnfolder]: 369/790 cut-off events. [2022-12-12 15:41:17,399 INFO L131 PetriNetUnfolder]: For 10657/10657 co-relation queries the response was YES. [2022-12-12 15:41:17,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5909 conditions, 790 events. 369/790 cut-off events. For 10657/10657 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4376 event pairs, 16 based on Foata normal form. 30/820 useless extension candidates. Maximal degree in co-relation 5879. Up to 280 conditions per place. [2022-12-12 15:41:17,406 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 72 selfloop transitions, 89 changer transitions 14/175 dead transitions. [2022-12-12 15:41:17,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 175 transitions, 3349 flow [2022-12-12 15:41:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 15:41:17,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 15:41:17,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2022-12-12 15:41:17,407 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3798076923076923 [2022-12-12 15:41:17,407 INFO L175 Difference]: Start difference. First operand has 113 places, 164 transitions, 3081 flow. Second operand 8 states and 79 transitions. [2022-12-12 15:41:17,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 175 transitions, 3349 flow [2022-12-12 15:41:17,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 175 transitions, 3118 flow, removed 21 selfloop flow, removed 12 redundant places. [2022-12-12 15:41:17,439 INFO L231 Difference]: Finished difference. Result has 109 places, 140 transitions, 2733 flow [2022-12-12 15:41:17,439 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2540, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2733, PETRI_PLACES=109, PETRI_TRANSITIONS=140} [2022-12-12 15:41:17,441 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 70 predicate places. [2022-12-12 15:41:17,441 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 140 transitions, 2733 flow [2022-12-12 15:41:17,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:17,441 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:17,441 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:17,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-12 15:41:17,442 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:17,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:17,442 INFO L85 PathProgramCache]: Analyzing trace with hash -525749634, now seen corresponding path program 30 times [2022-12-12 15:41:17,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:17,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951320213] [2022-12-12 15:41:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:17,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:17,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:17,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:17,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951320213] [2022-12-12 15:41:17,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951320213] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:17,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:17,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 15:41:17,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791758286] [2022-12-12 15:41:17,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:17,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 15:41:17,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:17,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 15:41:17,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-12 15:41:17,618 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:17,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 140 transitions, 2733 flow. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:17,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:17,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:17,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:17,858 INFO L130 PetriNetUnfolder]: 274/593 cut-off events. [2022-12-12 15:41:17,858 INFO L131 PetriNetUnfolder]: For 6997/6997 co-relation queries the response was YES. [2022-12-12 15:41:17,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4663 conditions, 593 events. 274/593 cut-off events. For 6997/6997 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3131 event pairs, 2 based on Foata normal form. 16/609 useless extension candidates. Maximal degree in co-relation 4633. Up to 190 conditions per place. [2022-12-12 15:41:17,863 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 51 selfloop transitions, 93 changer transitions 12/156 dead transitions. [2022-12-12 15:41:17,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 156 transitions, 2938 flow [2022-12-12 15:41:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 15:41:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 15:41:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 82 transitions. [2022-12-12 15:41:17,864 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3153846153846154 [2022-12-12 15:41:17,864 INFO L175 Difference]: Start difference. First operand has 109 places, 140 transitions, 2733 flow. Second operand 10 states and 82 transitions. [2022-12-12 15:41:17,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 156 transitions, 2938 flow [2022-12-12 15:41:17,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 156 transitions, 2686 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-12-12 15:41:17,892 INFO L231 Difference]: Finished difference. Result has 108 places, 119 transitions, 2182 flow [2022-12-12 15:41:17,892 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=2246, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2182, PETRI_PLACES=108, PETRI_TRANSITIONS=119} [2022-12-12 15:41:17,893 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 69 predicate places. [2022-12-12 15:41:17,893 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 119 transitions, 2182 flow [2022-12-12 15:41:17,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:17,893 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:17,893 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:17,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-12 15:41:17,894 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:17,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:17,895 INFO L85 PathProgramCache]: Analyzing trace with hash -657767516, now seen corresponding path program 31 times [2022-12-12 15:41:17,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:17,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719761769] [2022-12-12 15:41:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:17,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:18,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:18,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:18,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719761769] [2022-12-12 15:41:18,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719761769] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:18,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:18,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:18,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944812277] [2022-12-12 15:41:18,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:18,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:18,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:18,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:18,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:18,127 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:18,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 119 transitions, 2182 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:18,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:18,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:18,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:18,367 INFO L130 PetriNetUnfolder]: 228/503 cut-off events. [2022-12-12 15:41:18,367 INFO L131 PetriNetUnfolder]: For 5489/5489 co-relation queries the response was YES. [2022-12-12 15:41:18,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3799 conditions, 503 events. 228/503 cut-off events. For 5489/5489 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2500 event pairs, 12 based on Foata normal form. 2/505 useless extension candidates. Maximal degree in co-relation 3773. Up to 412 conditions per place. [2022-12-12 15:41:18,370 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 110 selfloop transitions, 25 changer transitions 8/143 dead transitions. [2022-12-12 15:41:18,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 143 transitions, 2562 flow [2022-12-12 15:41:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 15:41:18,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 15:41:18,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 73 transitions. [2022-12-12 15:41:18,371 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.21597633136094674 [2022-12-12 15:41:18,371 INFO L175 Difference]: Start difference. First operand has 108 places, 119 transitions, 2182 flow. Second operand 13 states and 73 transitions. [2022-12-12 15:41:18,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 143 transitions, 2562 flow [2022-12-12 15:41:18,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 143 transitions, 2319 flow, removed 7 selfloop flow, removed 12 redundant places. [2022-12-12 15:41:18,386 INFO L231 Difference]: Finished difference. Result has 109 places, 116 transitions, 1917 flow [2022-12-12 15:41:18,386 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1917, PETRI_PLACES=109, PETRI_TRANSITIONS=116} [2022-12-12 15:41:18,386 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 70 predicate places. [2022-12-12 15:41:18,386 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 116 transitions, 1917 flow [2022-12-12 15:41:18,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:18,387 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:18,387 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:18,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-12 15:41:18,387 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:18,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:18,387 INFO L85 PathProgramCache]: Analyzing trace with hash 992358366, now seen corresponding path program 32 times [2022-12-12 15:41:18,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:18,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924374794] [2022-12-12 15:41:18,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:18,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:18,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:18,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924374794] [2022-12-12 15:41:18,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924374794] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:18,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:18,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:18,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585854760] [2022-12-12 15:41:18,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:18,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:18,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:18,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:18,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:18,584 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:18,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 116 transitions, 1917 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:18,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:18,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:18,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:18,805 INFO L130 PetriNetUnfolder]: 224/497 cut-off events. [2022-12-12 15:41:18,805 INFO L131 PetriNetUnfolder]: For 4238/4238 co-relation queries the response was YES. [2022-12-12 15:41:18,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3406 conditions, 497 events. 224/497 cut-off events. For 4238/4238 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2488 event pairs, 8 based on Foata normal form. 2/499 useless extension candidates. Maximal degree in co-relation 3384. Up to 427 conditions per place. [2022-12-12 15:41:18,809 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 111 selfloop transitions, 18 changer transitions 10/139 dead transitions. [2022-12-12 15:41:18,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 139 transitions, 2331 flow [2022-12-12 15:41:18,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 15:41:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 15:41:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 66 transitions. [2022-12-12 15:41:18,812 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.21153846153846154 [2022-12-12 15:41:18,812 INFO L175 Difference]: Start difference. First operand has 109 places, 116 transitions, 1917 flow. Second operand 12 states and 66 transitions. [2022-12-12 15:41:18,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 139 transitions, 2331 flow [2022-12-12 15:41:18,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 139 transitions, 2281 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-12-12 15:41:18,830 INFO L231 Difference]: Finished difference. Result has 109 places, 114 transitions, 1895 flow [2022-12-12 15:41:18,831 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1895, PETRI_PLACES=109, PETRI_TRANSITIONS=114} [2022-12-12 15:41:18,832 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 70 predicate places. [2022-12-12 15:41:18,832 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 114 transitions, 1895 flow [2022-12-12 15:41:18,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:18,832 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:18,832 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:18,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-12 15:41:18,833 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:18,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:18,834 INFO L85 PathProgramCache]: Analyzing trace with hash 586750948, now seen corresponding path program 33 times [2022-12-12 15:41:18,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:18,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137897200] [2022-12-12 15:41:18,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:18,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:19,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:19,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137897200] [2022-12-12 15:41:19,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137897200] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:19,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:19,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:19,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670536625] [2022-12-12 15:41:19,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:19,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:19,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:19,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:19,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:19,034 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:19,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 114 transitions, 1895 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:19,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:19,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:19,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:19,236 INFO L130 PetriNetUnfolder]: 215/480 cut-off events. [2022-12-12 15:41:19,237 INFO L131 PetriNetUnfolder]: For 4284/4284 co-relation queries the response was YES. [2022-12-12 15:41:19,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3319 conditions, 480 events. 215/480 cut-off events. For 4284/4284 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2378 event pairs, 10 based on Foata normal form. 4/484 useless extension candidates. Maximal degree in co-relation 3297. Up to 416 conditions per place. [2022-12-12 15:41:19,240 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 106 selfloop transitions, 17 changer transitions 7/130 dead transitions. [2022-12-12 15:41:19,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 130 transitions, 2246 flow [2022-12-12 15:41:19,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 15:41:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 15:41:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 59 transitions. [2022-12-12 15:41:19,241 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.22692307692307692 [2022-12-12 15:41:19,241 INFO L175 Difference]: Start difference. First operand has 109 places, 114 transitions, 1895 flow. Second operand 10 states and 59 transitions. [2022-12-12 15:41:19,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 130 transitions, 2246 flow [2022-12-12 15:41:19,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 130 transitions, 2203 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-12-12 15:41:19,264 INFO L231 Difference]: Finished difference. Result has 107 places, 111 transitions, 1843 flow [2022-12-12 15:41:19,264 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1843, PETRI_PLACES=107, PETRI_TRANSITIONS=111} [2022-12-12 15:41:19,264 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 68 predicate places. [2022-12-12 15:41:19,265 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 111 transitions, 1843 flow [2022-12-12 15:41:19,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:19,265 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:19,265 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:19,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-12 15:41:19,265 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:19,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:19,266 INFO L85 PathProgramCache]: Analyzing trace with hash -799364380, now seen corresponding path program 34 times [2022-12-12 15:41:19,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:19,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819357602] [2022-12-12 15:41:19,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:19,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:19,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:19,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819357602] [2022-12-12 15:41:19,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819357602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:19,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:19,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:19,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438064074] [2022-12-12 15:41:19,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:19,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:19,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:19,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:19,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:19,435 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:19,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 111 transitions, 1843 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:19,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:19,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:19,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:19,614 INFO L130 PetriNetUnfolder]: 207/460 cut-off events. [2022-12-12 15:41:19,615 INFO L131 PetriNetUnfolder]: For 4070/4070 co-relation queries the response was YES. [2022-12-12 15:41:19,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3204 conditions, 460 events. 207/460 cut-off events. For 4070/4070 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2227 event pairs, 10 based on Foata normal form. 4/464 useless extension candidates. Maximal degree in co-relation 3181. Up to 396 conditions per place. [2022-12-12 15:41:19,618 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 100 selfloop transitions, 19 changer transitions 7/126 dead transitions. [2022-12-12 15:41:19,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 126 transitions, 2127 flow [2022-12-12 15:41:19,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 15:41:19,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 15:41:19,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 62 transitions. [2022-12-12 15:41:19,619 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.21678321678321677 [2022-12-12 15:41:19,619 INFO L175 Difference]: Start difference. First operand has 107 places, 111 transitions, 1843 flow. Second operand 11 states and 62 transitions. [2022-12-12 15:41:19,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 126 transitions, 2127 flow [2022-12-12 15:41:19,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 126 transitions, 2092 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-12 15:41:19,636 INFO L231 Difference]: Finished difference. Result has 110 places, 106 transitions, 1730 flow [2022-12-12 15:41:19,636 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1730, PETRI_PLACES=110, PETRI_TRANSITIONS=106} [2022-12-12 15:41:19,636 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 71 predicate places. [2022-12-12 15:41:19,636 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 106 transitions, 1730 flow [2022-12-12 15:41:19,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:19,636 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:19,636 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:19,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-12 15:41:19,638 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:19,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1448284434, now seen corresponding path program 35 times [2022-12-12 15:41:19,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:19,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147441470] [2022-12-12 15:41:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:19,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:19,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:19,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147441470] [2022-12-12 15:41:19,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147441470] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:19,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:19,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:19,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062338464] [2022-12-12 15:41:19,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:19,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:19,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:19,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:19,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:19,810 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:19,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 106 transitions, 1730 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:19,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:19,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:19,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:20,048 INFO L130 PetriNetUnfolder]: 154/377 cut-off events. [2022-12-12 15:41:20,048 INFO L131 PetriNetUnfolder]: For 4162/4162 co-relation queries the response was YES. [2022-12-12 15:41:20,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2747 conditions, 377 events. 154/377 cut-off events. For 4162/4162 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1952 event pairs, 2 based on Foata normal form. 24/401 useless extension candidates. Maximal degree in co-relation 2723. Up to 107 conditions per place. [2022-12-12 15:41:20,050 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 39 selfloop transitions, 56 changer transitions 28/123 dead transitions. [2022-12-12 15:41:20,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 123 transitions, 2043 flow [2022-12-12 15:41:20,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 15:41:20,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 15:41:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 87 transitions. [2022-12-12 15:41:20,051 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.257396449704142 [2022-12-12 15:41:20,051 INFO L175 Difference]: Start difference. First operand has 110 places, 106 transitions, 1730 flow. Second operand 13 states and 87 transitions. [2022-12-12 15:41:20,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 123 transitions, 2043 flow [2022-12-12 15:41:20,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 123 transitions, 1931 flow, removed 5 selfloop flow, removed 13 redundant places. [2022-12-12 15:41:20,061 INFO L231 Difference]: Finished difference. Result has 107 places, 78 transitions, 1235 flow [2022-12-12 15:41:20,061 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1235, PETRI_PLACES=107, PETRI_TRANSITIONS=78} [2022-12-12 15:41:20,062 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 68 predicate places. [2022-12-12 15:41:20,062 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 78 transitions, 1235 flow [2022-12-12 15:41:20,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:20,062 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:20,062 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:20,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-12 15:41:20,062 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:20,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:20,063 INFO L85 PathProgramCache]: Analyzing trace with hash -943235472, now seen corresponding path program 36 times [2022-12-12 15:41:20,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:20,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14707478] [2022-12-12 15:41:20,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:20,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:20,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:20,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14707478] [2022-12-12 15:41:20,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14707478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:20,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:20,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:20,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543571155] [2022-12-12 15:41:20,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:20,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:20,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:20,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:20,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:20,250 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:20,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 78 transitions, 1235 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:20,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:20,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:20,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:20,388 INFO L130 PetriNetUnfolder]: 101/248 cut-off events. [2022-12-12 15:41:20,388 INFO L131 PetriNetUnfolder]: For 2578/2578 co-relation queries the response was YES. [2022-12-12 15:41:20,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1808 conditions, 248 events. 101/248 cut-off events. For 2578/2578 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1045 event pairs, 2 based on Foata normal form. 4/252 useless extension candidates. Maximal degree in co-relation 1786. Up to 82 conditions per place. [2022-12-12 15:41:20,389 INFO L137 encePairwiseOnDemand]: 16/26 looper letters, 43 selfloop transitions, 39 changer transitions 11/93 dead transitions. [2022-12-12 15:41:20,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 93 transitions, 1485 flow [2022-12-12 15:41:20,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 15:41:20,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 15:41:20,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 66 transitions. [2022-12-12 15:41:20,390 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.25384615384615383 [2022-12-12 15:41:20,391 INFO L175 Difference]: Start difference. First operand has 107 places, 78 transitions, 1235 flow. Second operand 10 states and 66 transitions. [2022-12-12 15:41:20,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 93 transitions, 1485 flow [2022-12-12 15:41:20,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 93 transitions, 1261 flow, removed 18 selfloop flow, removed 13 redundant places. [2022-12-12 15:41:20,398 INFO L231 Difference]: Finished difference. Result has 103 places, 69 transitions, 962 flow [2022-12-12 15:41:20,399 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=962, PETRI_PLACES=103, PETRI_TRANSITIONS=69} [2022-12-12 15:41:20,399 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 64 predicate places. [2022-12-12 15:41:20,399 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 69 transitions, 962 flow [2022-12-12 15:41:20,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:20,399 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:20,399 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:20,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-12 15:41:20,400 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:20,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:20,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1997714274, now seen corresponding path program 37 times [2022-12-12 15:41:20,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:20,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823320160] [2022-12-12 15:41:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:20,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:20,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:20,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823320160] [2022-12-12 15:41:20,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823320160] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:20,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:20,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:20,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437535170] [2022-12-12 15:41:20,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:20,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:20,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:20,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:20,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:20,566 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:20,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 69 transitions, 962 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:20,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:20,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:20,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:20,691 INFO L130 PetriNetUnfolder]: 88/215 cut-off events. [2022-12-12 15:41:20,691 INFO L131 PetriNetUnfolder]: For 2019/2019 co-relation queries the response was YES. [2022-12-12 15:41:20,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1485 conditions, 215 events. 88/215 cut-off events. For 2019/2019 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 830 event pairs, 8 based on Foata normal form. 2/217 useless extension candidates. Maximal degree in co-relation 1465. Up to 182 conditions per place. [2022-12-12 15:41:20,693 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 65 selfloop transitions, 6 changer transitions 7/78 dead transitions. [2022-12-12 15:41:20,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 78 transitions, 1143 flow [2022-12-12 15:41:20,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 15:41:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 15:41:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 44 transitions. [2022-12-12 15:41:20,694 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.18803418803418803 [2022-12-12 15:41:20,694 INFO L175 Difference]: Start difference. First operand has 103 places, 69 transitions, 962 flow. Second operand 9 states and 44 transitions. [2022-12-12 15:41:20,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 78 transitions, 1143 flow [2022-12-12 15:41:20,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 78 transitions, 966 flow, removed 7 selfloop flow, removed 13 redundant places. [2022-12-12 15:41:20,702 INFO L231 Difference]: Finished difference. Result has 92 places, 65 transitions, 742 flow [2022-12-12 15:41:20,702 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=742, PETRI_PLACES=92, PETRI_TRANSITIONS=65} [2022-12-12 15:41:20,703 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 53 predicate places. [2022-12-12 15:41:20,703 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 65 transitions, 742 flow [2022-12-12 15:41:20,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:20,703 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:20,703 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:20,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-12 15:41:20,703 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:20,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:20,704 INFO L85 PathProgramCache]: Analyzing trace with hash 422192952, now seen corresponding path program 38 times [2022-12-12 15:41:20,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:20,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886453047] [2022-12-12 15:41:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:20,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:20,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:20,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886453047] [2022-12-12 15:41:20,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886453047] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:20,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:20,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:20,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012016349] [2022-12-12 15:41:20,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:20,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:20,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:20,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:20,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:20,864 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:20,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 65 transitions, 742 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:20,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:20,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:20,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:20,991 INFO L130 PetriNetUnfolder]: 81/198 cut-off events. [2022-12-12 15:41:20,991 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2022-12-12 15:41:20,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1159 conditions, 198 events. 81/198 cut-off events. For 1089/1089 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 739 event pairs, 2 based on Foata normal form. 2/200 useless extension candidates. Maximal degree in co-relation 1143. Up to 78 conditions per place. [2022-12-12 15:41:20,993 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 39 selfloop transitions, 33 changer transitions 3/75 dead transitions. [2022-12-12 15:41:20,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 75 transitions, 927 flow [2022-12-12 15:41:20,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 15:41:20,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 15:41:20,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 55 transitions. [2022-12-12 15:41:20,995 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.23504273504273504 [2022-12-12 15:41:20,995 INFO L175 Difference]: Start difference. First operand has 92 places, 65 transitions, 742 flow. Second operand 9 states and 55 transitions. [2022-12-12 15:41:20,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 75 transitions, 927 flow [2022-12-12 15:41:20,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 75 transitions, 904 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-12 15:41:21,001 INFO L231 Difference]: Finished difference. Result has 87 places, 61 transitions, 736 flow [2022-12-12 15:41:21,001 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=736, PETRI_PLACES=87, PETRI_TRANSITIONS=61} [2022-12-12 15:41:21,001 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 48 predicate places. [2022-12-12 15:41:21,001 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 61 transitions, 736 flow [2022-12-12 15:41:21,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:21,002 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:21,002 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:21,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-12 15:41:21,002 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:21,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:21,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1898740276, now seen corresponding path program 39 times [2022-12-12 15:41:21,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:21,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851752138] [2022-12-12 15:41:21,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:21,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:21,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:21,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851752138] [2022-12-12 15:41:21,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851752138] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:21,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:21,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:21,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623450584] [2022-12-12 15:41:21,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:21,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:21,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:21,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:21,169 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:21,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 61 transitions, 736 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:21,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:21,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:21,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:21,291 INFO L130 PetriNetUnfolder]: 75/188 cut-off events. [2022-12-12 15:41:21,291 INFO L131 PetriNetUnfolder]: For 1113/1113 co-relation queries the response was YES. [2022-12-12 15:41:21,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1138 conditions, 188 events. 75/188 cut-off events. For 1113/1113 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 676 event pairs, 6 based on Foata normal form. 2/190 useless extension candidates. Maximal degree in co-relation 1123. Up to 155 conditions per place. [2022-12-12 15:41:21,292 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 54 selfloop transitions, 2 changer transitions 15/71 dead transitions. [2022-12-12 15:41:21,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 71 transitions, 910 flow [2022-12-12 15:41:21,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 15:41:21,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 15:41:21,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 43 transitions. [2022-12-12 15:41:21,294 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.18376068376068377 [2022-12-12 15:41:21,294 INFO L175 Difference]: Start difference. First operand has 87 places, 61 transitions, 736 flow. Second operand 9 states and 43 transitions. [2022-12-12 15:41:21,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 71 transitions, 910 flow [2022-12-12 15:41:21,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 71 transitions, 766 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-12-12 15:41:21,299 INFO L231 Difference]: Finished difference. Result has 86 places, 55 transitions, 513 flow [2022-12-12 15:41:21,299 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=513, PETRI_PLACES=86, PETRI_TRANSITIONS=55} [2022-12-12 15:41:21,300 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 47 predicate places. [2022-12-12 15:41:21,300 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 55 transitions, 513 flow [2022-12-12 15:41:21,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:21,300 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:21,301 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:21,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-12 15:41:21,301 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:21,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:21,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1242536450, now seen corresponding path program 40 times [2022-12-12 15:41:21,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:21,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819791185] [2022-12-12 15:41:21,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:21,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:21,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:21,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819791185] [2022-12-12 15:41:21,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819791185] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:21,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:21,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:21,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087611392] [2022-12-12 15:41:21,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:21,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:21,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:21,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:21,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:21,480 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:21,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 55 transitions, 513 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:21,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:21,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:21,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:21,608 INFO L130 PetriNetUnfolder]: 68/177 cut-off events. [2022-12-12 15:41:21,608 INFO L131 PetriNetUnfolder]: For 863/863 co-relation queries the response was YES. [2022-12-12 15:41:21,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 894 conditions, 177 events. 68/177 cut-off events. For 863/863 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 669 event pairs, 2 based on Foata normal form. 4/181 useless extension candidates. Maximal degree in co-relation 880. Up to 106 conditions per place. [2022-12-12 15:41:21,610 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 44 selfloop transitions, 19 changer transitions 7/70 dead transitions. [2022-12-12 15:41:21,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 70 transitions, 759 flow [2022-12-12 15:41:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 15:41:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 15:41:21,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 51 transitions. [2022-12-12 15:41:21,611 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.19615384615384615 [2022-12-12 15:41:21,611 INFO L175 Difference]: Start difference. First operand has 86 places, 55 transitions, 513 flow. Second operand 10 states and 51 transitions. [2022-12-12 15:41:21,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 70 transitions, 759 flow [2022-12-12 15:41:21,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 653 flow, removed 2 selfloop flow, removed 13 redundant places. [2022-12-12 15:41:21,615 INFO L231 Difference]: Finished difference. Result has 74 places, 57 transitions, 500 flow [2022-12-12 15:41:21,615 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=500, PETRI_PLACES=74, PETRI_TRANSITIONS=57} [2022-12-12 15:41:21,616 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 35 predicate places. [2022-12-12 15:41:21,616 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 57 transitions, 500 flow [2022-12-12 15:41:21,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:21,616 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:21,616 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:21,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-12 15:41:21,616 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:21,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:21,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1384784616, now seen corresponding path program 41 times [2022-12-12 15:41:21,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:21,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996832030] [2022-12-12 15:41:21,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:21,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:21,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:21,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996832030] [2022-12-12 15:41:21,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996832030] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:21,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:21,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:21,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62524387] [2022-12-12 15:41:21,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:21,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:21,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:21,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:21,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:21,768 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:21,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 57 transitions, 500 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:21,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:21,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:21,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:21,884 INFO L130 PetriNetUnfolder]: 61/164 cut-off events. [2022-12-12 15:41:21,885 INFO L131 PetriNetUnfolder]: For 532/532 co-relation queries the response was YES. [2022-12-12 15:41:21,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 164 events. 61/164 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 603 event pairs, 0 based on Foata normal form. 4/168 useless extension candidates. Maximal degree in co-relation 795. Up to 51 conditions per place. [2022-12-12 15:41:21,885 INFO L137 encePairwiseOnDemand]: 16/26 looper letters, 32 selfloop transitions, 32 changer transitions 3/67 dead transitions. [2022-12-12 15:41:21,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 67 transitions, 669 flow [2022-12-12 15:41:21,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 15:41:21,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 15:41:21,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 52 transitions. [2022-12-12 15:41:21,886 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2 [2022-12-12 15:41:21,886 INFO L175 Difference]: Start difference. First operand has 74 places, 57 transitions, 500 flow. Second operand 10 states and 52 transitions. [2022-12-12 15:41:21,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 67 transitions, 669 flow [2022-12-12 15:41:21,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 67 transitions, 621 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-12-12 15:41:21,890 INFO L231 Difference]: Finished difference. Result has 77 places, 55 transitions, 527 flow [2022-12-12 15:41:21,890 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=527, PETRI_PLACES=77, PETRI_TRANSITIONS=55} [2022-12-12 15:41:21,890 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 38 predicate places. [2022-12-12 15:41:21,890 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 55 transitions, 527 flow [2022-12-12 15:41:21,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:21,890 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:21,890 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:21,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-12 15:41:21,891 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:21,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:21,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1797454396, now seen corresponding path program 42 times [2022-12-12 15:41:21,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:21,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023570822] [2022-12-12 15:41:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:21,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:22,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:22,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023570822] [2022-12-12 15:41:22,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023570822] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:22,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:22,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:22,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616738768] [2022-12-12 15:41:22,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:22,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:22,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:22,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:22,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:22,063 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:22,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 55 transitions, 527 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:22,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:22,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:22,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:22,221 INFO L130 PetriNetUnfolder]: 55/150 cut-off events. [2022-12-12 15:41:22,221 INFO L131 PetriNetUnfolder]: For 582/582 co-relation queries the response was YES. [2022-12-12 15:41:22,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 150 events. 55/150 cut-off events. For 582/582 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 507 event pairs, 4 based on Foata normal form. 2/152 useless extension candidates. Maximal degree in co-relation 781. Up to 100 conditions per place. [2022-12-12 15:41:22,222 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 46 selfloop transitions, 14 changer transitions 6/66 dead transitions. [2022-12-12 15:41:22,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 66 transitions, 694 flow [2022-12-12 15:41:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 15:41:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 15:41:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 52 transitions. [2022-12-12 15:41:22,223 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.16666666666666666 [2022-12-12 15:41:22,223 INFO L175 Difference]: Start difference. First operand has 77 places, 55 transitions, 527 flow. Second operand 12 states and 52 transitions. [2022-12-12 15:41:22,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 66 transitions, 694 flow [2022-12-12 15:41:22,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 66 transitions, 599 flow, removed 5 selfloop flow, removed 12 redundant places. [2022-12-12 15:41:22,227 INFO L231 Difference]: Finished difference. Result has 76 places, 52 transitions, 432 flow [2022-12-12 15:41:22,227 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=432, PETRI_PLACES=76, PETRI_TRANSITIONS=52} [2022-12-12 15:41:22,227 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 37 predicate places. [2022-12-12 15:41:22,228 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 52 transitions, 432 flow [2022-12-12 15:41:22,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:22,228 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:22,228 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:22,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-12-12 15:41:22,228 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:22,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:22,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1643168316, now seen corresponding path program 43 times [2022-12-12 15:41:22,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:22,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760188755] [2022-12-12 15:41:22,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:22,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:22,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:22,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:22,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760188755] [2022-12-12 15:41:22,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760188755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:22,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:22,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:22,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617507959] [2022-12-12 15:41:22,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:22,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:22,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:22,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:22,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:22,395 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:22,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 52 transitions, 432 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:22,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:22,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:22,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:22,564 INFO L130 PetriNetUnfolder]: 48/133 cut-off events. [2022-12-12 15:41:22,564 INFO L131 PetriNetUnfolder]: For 391/391 co-relation queries the response was YES. [2022-12-12 15:41:22,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 133 events. 48/133 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 420 event pairs, 4 based on Foata normal form. 2/135 useless extension candidates. Maximal degree in co-relation 635. Up to 86 conditions per place. [2022-12-12 15:41:22,565 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 42 selfloop transitions, 13 changer transitions 6/61 dead transitions. [2022-12-12 15:41:22,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 61 transitions, 574 flow [2022-12-12 15:41:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 15:41:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 15:41:22,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 51 transitions. [2022-12-12 15:41:22,566 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.16346153846153846 [2022-12-12 15:41:22,566 INFO L175 Difference]: Start difference. First operand has 76 places, 52 transitions, 432 flow. Second operand 12 states and 51 transitions. [2022-12-12 15:41:22,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 61 transitions, 574 flow [2022-12-12 15:41:22,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 61 transitions, 545 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-12 15:41:22,569 INFO L231 Difference]: Finished difference. Result has 77 places, 47 transitions, 384 flow [2022-12-12 15:41:22,569 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=384, PETRI_PLACES=77, PETRI_TRANSITIONS=47} [2022-12-12 15:41:22,570 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 38 predicate places. [2022-12-12 15:41:22,570 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 47 transitions, 384 flow [2022-12-12 15:41:22,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:22,570 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:22,571 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:22,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-12-12 15:41:22,571 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:22,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:22,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1435748572, now seen corresponding path program 44 times [2022-12-12 15:41:22,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:22,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254138876] [2022-12-12 15:41:22,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:22,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:22,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:22,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254138876] [2022-12-12 15:41:22,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254138876] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:22,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:22,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:22,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386040869] [2022-12-12 15:41:22,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:22,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:22,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:22,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:22,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:22,717 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:22,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 47 transitions, 384 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:22,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:22,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:22,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:22,870 INFO L130 PetriNetUnfolder]: 44/125 cut-off events. [2022-12-12 15:41:22,870 INFO L131 PetriNetUnfolder]: For 367/367 co-relation queries the response was YES. [2022-12-12 15:41:22,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 125 events. 44/125 cut-off events. For 367/367 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 377 event pairs, 4 based on Foata normal form. 2/127 useless extension candidates. Maximal degree in co-relation 591. Up to 66 conditions per place. [2022-12-12 15:41:22,871 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 37 selfloop transitions, 17 changer transitions 5/59 dead transitions. [2022-12-12 15:41:22,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 59 transitions, 535 flow [2022-12-12 15:41:22,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 15:41:22,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 15:41:22,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 54 transitions. [2022-12-12 15:41:22,872 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.15976331360946747 [2022-12-12 15:41:22,872 INFO L175 Difference]: Start difference. First operand has 77 places, 47 transitions, 384 flow. Second operand 13 states and 54 transitions. [2022-12-12 15:41:22,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 59 transitions, 535 flow [2022-12-12 15:41:22,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 59 transitions, 479 flow, removed 0 selfloop flow, removed 14 redundant places. [2022-12-12 15:41:22,875 INFO L231 Difference]: Finished difference. Result has 74 places, 45 transitions, 340 flow [2022-12-12 15:41:22,875 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=340, PETRI_PLACES=74, PETRI_TRANSITIONS=45} [2022-12-12 15:41:22,875 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 35 predicate places. [2022-12-12 15:41:22,875 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 45 transitions, 340 flow [2022-12-12 15:41:22,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:22,875 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:22,876 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:22,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-12-12 15:41:22,876 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:22,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:22,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1431998936, now seen corresponding path program 45 times [2022-12-12 15:41:22,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:22,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924713997] [2022-12-12 15:41:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:22,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:23,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:23,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924713997] [2022-12-12 15:41:23,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924713997] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:23,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:23,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:23,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992982474] [2022-12-12 15:41:23,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:23,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:23,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:23,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:23,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:23,038 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:23,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 45 transitions, 340 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:23,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:23,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:23,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:23,178 INFO L130 PetriNetUnfolder]: 41/120 cut-off events. [2022-12-12 15:41:23,178 INFO L131 PetriNetUnfolder]: For 357/357 co-relation queries the response was YES. [2022-12-12 15:41:23,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 120 events. 41/120 cut-off events. For 357/357 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 358 event pairs, 4 based on Foata normal form. 2/122 useless extension candidates. Maximal degree in co-relation 548. Up to 64 conditions per place. [2022-12-12 15:41:23,179 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 36 selfloop transitions, 16 changer transitions 5/57 dead transitions. [2022-12-12 15:41:23,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 57 transitions, 487 flow [2022-12-12 15:41:23,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 15:41:23,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 15:41:23,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 53 transitions. [2022-12-12 15:41:23,180 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.15680473372781065 [2022-12-12 15:41:23,180 INFO L175 Difference]: Start difference. First operand has 74 places, 45 transitions, 340 flow. Second operand 13 states and 53 transitions. [2022-12-12 15:41:23,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 57 transitions, 487 flow [2022-12-12 15:41:23,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 57 transitions, 444 flow, removed 1 selfloop flow, removed 13 redundant places. [2022-12-12 15:41:23,182 INFO L231 Difference]: Finished difference. Result has 72 places, 43 transitions, 307 flow [2022-12-12 15:41:23,182 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=307, PETRI_PLACES=72, PETRI_TRANSITIONS=43} [2022-12-12 15:41:23,183 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 33 predicate places. [2022-12-12 15:41:23,183 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 43 transitions, 307 flow [2022-12-12 15:41:23,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:23,183 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:23,183 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:23,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-12-12 15:41:23,183 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:23,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:23,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1850833642, now seen corresponding path program 46 times [2022-12-12 15:41:23,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:23,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796577153] [2022-12-12 15:41:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:23,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:23,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:23,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796577153] [2022-12-12 15:41:23,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796577153] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:23,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:23,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:23,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879729488] [2022-12-12 15:41:23,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:23,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:23,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:23,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:23,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:23,337 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:23,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 43 transitions, 307 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:23,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:23,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:23,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:23,457 INFO L130 PetriNetUnfolder]: 36/109 cut-off events. [2022-12-12 15:41:23,457 INFO L131 PetriNetUnfolder]: For 243/243 co-relation queries the response was YES. [2022-12-12 15:41:23,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 109 events. 36/109 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 303 event pairs, 0 based on Foata normal form. 2/111 useless extension candidates. Maximal degree in co-relation 486. Up to 29 conditions per place. [2022-12-12 15:41:23,458 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 28 selfloop transitions, 18 changer transitions 7/53 dead transitions. [2022-12-12 15:41:23,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 53 transitions, 441 flow [2022-12-12 15:41:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 15:41:23,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 15:41:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 48 transitions. [2022-12-12 15:41:23,459 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.16783216783216784 [2022-12-12 15:41:23,459 INFO L175 Difference]: Start difference. First operand has 72 places, 43 transitions, 307 flow. Second operand 11 states and 48 transitions. [2022-12-12 15:41:23,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 53 transitions, 441 flow [2022-12-12 15:41:23,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 53 transitions, 376 flow, removed 4 selfloop flow, removed 17 redundant places. [2022-12-12 15:41:23,464 INFO L231 Difference]: Finished difference. Result has 63 places, 38 transitions, 237 flow [2022-12-12 15:41:23,464 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=237, PETRI_PLACES=63, PETRI_TRANSITIONS=38} [2022-12-12 15:41:23,466 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2022-12-12 15:41:23,466 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 38 transitions, 237 flow [2022-12-12 15:41:23,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:23,466 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:23,466 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:23,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-12-12 15:41:23,469 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:23,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:23,469 INFO L85 PathProgramCache]: Analyzing trace with hash 501827556, now seen corresponding path program 47 times [2022-12-12 15:41:23,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:23,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66080533] [2022-12-12 15:41:23,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:23,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:23,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:23,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:23,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66080533] [2022-12-12 15:41:23,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66080533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:23,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:23,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:23,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610544176] [2022-12-12 15:41:23,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:23,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:23,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:23,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:23,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:23,639 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:23,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 38 transitions, 237 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:23,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:23,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:23,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:23,761 INFO L130 PetriNetUnfolder]: 21/76 cut-off events. [2022-12-12 15:41:23,761 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-12-12 15:41:23,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 76 events. 21/76 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 156 event pairs, 2 based on Foata normal form. 4/80 useless extension candidates. Maximal degree in co-relation 306. Up to 29 conditions per place. [2022-12-12 15:41:23,761 INFO L137 encePairwiseOnDemand]: 17/26 looper letters, 25 selfloop transitions, 6 changer transitions 13/44 dead transitions. [2022-12-12 15:41:23,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 44 transitions, 310 flow [2022-12-12 15:41:23,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 15:41:23,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 15:41:23,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 43 transitions. [2022-12-12 15:41:23,762 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.15034965034965034 [2022-12-12 15:41:23,762 INFO L175 Difference]: Start difference. First operand has 63 places, 38 transitions, 237 flow. Second operand 11 states and 43 transitions. [2022-12-12 15:41:23,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 44 transitions, 310 flow [2022-12-12 15:41:23,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 44 transitions, 247 flow, removed 1 selfloop flow, removed 14 redundant places. [2022-12-12 15:41:23,764 INFO L231 Difference]: Finished difference. Result has 57 places, 26 transitions, 106 flow [2022-12-12 15:41:23,764 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=106, PETRI_PLACES=57, PETRI_TRANSITIONS=26} [2022-12-12 15:41:23,764 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2022-12-12 15:41:23,764 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 26 transitions, 106 flow [2022-12-12 15:41:23,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:23,764 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:23,765 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:23,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-12-12 15:41:23,765 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 15:41:23,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:23,765 INFO L85 PathProgramCache]: Analyzing trace with hash 832814208, now seen corresponding path program 48 times [2022-12-12 15:41:23,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:23,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497253102] [2022-12-12 15:41:23,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:23,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:41:23,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:23,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497253102] [2022-12-12 15:41:23,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497253102] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:23,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:23,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:23,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191250258] [2022-12-12 15:41:23,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:23,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:23,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:23,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:23,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:23,945 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 26 [2022-12-12 15:41:23,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 26 transitions, 106 flow. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:23,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:23,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 26 [2022-12-12 15:41:23,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:23,991 INFO L130 PetriNetUnfolder]: 10/35 cut-off events. [2022-12-12 15:41:23,991 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-12-12 15:41:23,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 35 events. 10/35 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 2/37 useless extension candidates. Maximal degree in co-relation 133. Up to 9 conditions per place. [2022-12-12 15:41:23,992 INFO L137 encePairwiseOnDemand]: 18/26 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2022-12-12 15:41:23,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 23 transitions, 145 flow [2022-12-12 15:41:23,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 15:41:23,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 15:41:23,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 24 transitions. [2022-12-12 15:41:23,992 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.10256410256410256 [2022-12-12 15:41:23,992 INFO L175 Difference]: Start difference. First operand has 57 places, 26 transitions, 106 flow. Second operand 9 states and 24 transitions. [2022-12-12 15:41:23,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 23 transitions, 145 flow [2022-12-12 15:41:23,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 23 transitions, 102 flow, removed 4 selfloop flow, removed 15 redundant places. [2022-12-12 15:41:23,993 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2022-12-12 15:41:23,993 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2022-12-12 15:41:23,993 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2022-12-12 15:41:23,994 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2022-12-12 15:41:23,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:23,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-12 15:41:23,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-12-12 15:41:23,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-12 15:41:23,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-12 15:41:23,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-12 15:41:23,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-12-12 15:41:23,997 INFO L445 BasicCegarLoop]: Path program histogram: [48] [2022-12-12 15:41:23,999 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 15:41:23,999 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 15:41:24,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 03:41:24 BasicIcfg [2022-12-12 15:41:24,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 15:41:24,002 INFO L158 Benchmark]: Toolchain (without parser) took 31369.76ms. Allocated memory was 184.5MB in the beginning and 670.0MB in the end (delta: 485.5MB). Free memory was 144.4MB in the beginning and 617.2MB in the end (delta: -472.9MB). Peak memory consumption was 13.7MB. Max. memory is 8.0GB. [2022-12-12 15:41:24,002 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory is still 160.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 15:41:24,002 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.82ms. Allocated memory is still 184.5MB. Free memory was 144.4MB in the beginning and 129.2MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 15:41:24,002 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.91ms. Allocated memory is still 184.5MB. Free memory was 129.2MB in the beginning and 127.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 15:41:24,002 INFO L158 Benchmark]: Boogie Preprocessor took 24.65ms. Allocated memory is still 184.5MB. Free memory was 127.1MB in the beginning and 125.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 15:41:24,002 INFO L158 Benchmark]: RCFGBuilder took 534.15ms. Allocated memory is still 184.5MB. Free memory was 125.5MB in the beginning and 103.5MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-12-12 15:41:24,003 INFO L158 Benchmark]: TraceAbstraction took 30512.23ms. Allocated memory was 184.5MB in the beginning and 670.0MB in the end (delta: 485.5MB). Free memory was 101.9MB in the beginning and 617.2MB in the end (delta: -515.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 15:41:24,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory is still 160.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 255.82ms. Allocated memory is still 184.5MB. Free memory was 144.4MB in the beginning and 129.2MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.91ms. Allocated memory is still 184.5MB. Free memory was 129.2MB in the beginning and 127.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.65ms. Allocated memory is still 184.5MB. Free memory was 127.1MB in the beginning and 125.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 534.15ms. Allocated memory is still 184.5MB. Free memory was 125.5MB in the beginning and 103.5MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 30512.23ms. Allocated memory was 184.5MB in the beginning and 670.0MB in the end (delta: 485.5MB). Free memory was 101.9MB in the beginning and 617.2MB in the end (delta: -515.3MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 130 PlacesBefore, 39 PlacesAfterwards, 119 TransitionsBefore, 26 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 58 TrivialYvCompositions, 33 ConcurrentYvCompositions, 2 ChoiceCompositions, 93 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 731, independent: 700, independent conditional: 700, independent unconditional: 0, dependent: 31, dependent conditional: 31, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 731, independent: 700, independent conditional: 0, independent unconditional: 700, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 731, independent: 700, independent conditional: 0, independent unconditional: 700, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 731, independent: 700, independent conditional: 0, independent unconditional: 700, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 702, independent: 675, independent conditional: 0, independent unconditional: 675, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 702, independent: 638, independent conditional: 0, independent unconditional: 638, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 64, independent: 37, independent conditional: 0, independent unconditional: 37, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 173, independent: 88, independent conditional: 0, independent unconditional: 88, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 731, independent: 25, independent conditional: 0, independent unconditional: 25, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 702, unknown conditional: 0, unknown unconditional: 702] , Statistics on independence cache: Total cache size (in pairs): 967, Positive cache size: 940, Positive conditional cache size: 0, Positive unconditional cache size: 940, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 146]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 167 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 30.4s, OverallIterations: 48, TraceHistogramMax: 1, PathProgramHistogramMax: 48, EmptinessCheckTime: 0.0s, AutomataDifference: 15.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1365 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1365 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 760 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11385 IncrementalHoareTripleChecker+Invalid, 12145 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 760 mSolverCounterUnsat, 0 mSDtfsCounter, 11385 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 487 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 431 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4106occurred in iteration=17, InterpolantAutomatonStates: 474, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 1248 NumberOfCodeBlocks, 1248 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 1200 ConstructedInterpolants, 0 QuantifiedInterpolants, 4880 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 48 InterpolantComputations, 48 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 15:41:24,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...