/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-6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 15:41:05,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 15:41:05,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 15:41:05,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 15:41:05,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 15:41:05,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 15:41:05,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 15:41:05,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 15:41:05,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 15:41:05,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 15:41:05,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 15:41:05,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 15:41:05,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 15:41:05,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 15:41:05,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 15:41:05,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 15:41:05,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 15:41:05,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 15:41:05,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 15:41:05,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 15:41:05,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 15:41:05,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 15:41:05,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 15:41:05,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 15:41:05,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 15:41:05,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 15:41:05,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 15:41:05,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 15:41:05,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 15:41:05,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 15:41:05,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 15:41:05,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 15:41:05,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 15:41:05,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 15:41:05,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 15:41:05,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 15:41:05,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 15:41:05,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 15:41:05,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 15:41:05,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 15:41:05,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 15:41:05,089 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 15:41:05,111 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 15:41:05,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 15:41:05,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 15:41:05,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 15:41:05,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 15:41:05,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 15:41:05,114 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 15:41:05,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 15:41:05,115 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 15:41:05,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 15:41:05,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 15:41:05,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 15:41:05,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 15:41:05,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 15:41:05,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 15:41:05,116 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 15:41:05,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 15:41:05,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 15:41:05,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 15:41:05,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 15:41:05,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 15:41:05,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 15:41:05,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 15:41:05,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:41:05,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 15:41:05,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 15:41:05,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 15:41:05,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 15:41:05,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 15:41:05,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 15:41:05,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 15:41:05,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 15:41:05,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 15:41:05,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 15:41:05,412 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 15:41:05,412 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 15:41:05,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c [2022-12-12 15:41:06,339 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 15:41:06,542 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 15:41:06,542 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-6.wvr.c [2022-12-12 15:41:06,548 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3fa2a039/c343e36d4aaf41e5b2d2606fa844a447/FLAG70224dc6f [2022-12-12 15:41:06,557 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3fa2a039/c343e36d4aaf41e5b2d2606fa844a447 [2022-12-12 15:41:06,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 15:41:06,559 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 15:41:06,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 15:41:06,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 15:41:06,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 15:41:06,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:41:06" (1/1) ... [2022-12-12 15:41:06,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@459c70ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:41:06, skipping insertion in model container [2022-12-12 15:41:06,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:41:06" (1/1) ... [2022-12-12 15:41:06,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 15:41:06,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 15:41:06,676 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,680 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,685 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,685 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,685 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,689 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,690 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,690 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,691 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,691 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,692 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,692 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,697 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,697 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,699 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,699 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,699 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,699 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,700 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,700 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,700 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,700 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,703 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,703 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,703 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,703 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,721 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-6.wvr.c[4400,4413] [2022-12-12 15:41:06,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:41:06,735 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 15:41:06,748 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,750 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,752 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,753 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:41:06,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:41:06,778 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-6.wvr.c[4400,4413] [2022-12-12 15:41:06,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:41:06,792 INFO L208 MainTranslator]: Completed translation [2022-12-12 15:41:06,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:41:06 WrapperNode [2022-12-12 15:41:06,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 15:41:06,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 15:41:06,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 15:41:06,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 15:41:06,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:41:06" (1/1) ... [2022-12-12 15:41:06,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:41:06" (1/1) ... [2022-12-12 15:41:06,852 INFO L138 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 278 [2022-12-12 15:41:06,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 15:41:06,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 15:41:06,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 15:41:06,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 15:41:06,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:41:06" (1/1) ... [2022-12-12 15:41:06,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:41:06" (1/1) ... [2022-12-12 15:41:06,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:41:06" (1/1) ... [2022-12-12 15:41:06,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:41:06" (1/1) ... [2022-12-12 15:41:06,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:41:06" (1/1) ... [2022-12-12 15:41:06,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:41:06" (1/1) ... [2022-12-12 15:41:06,877 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:41:06" (1/1) ... [2022-12-12 15:41:06,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:41:06" (1/1) ... [2022-12-12 15:41:06,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 15:41:06,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 15:41:06,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 15:41:06,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 15:41:06,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:41:06" (1/1) ... [2022-12-12 15:41:06,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:41:06,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:41:06,913 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 15:41:06,922 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 15:41:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 15:41:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 15:41:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 15:41:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 15:41:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 15:41:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 15:41:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 15:41:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 15:41:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 15:41:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 15:41:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-12 15:41:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-12 15:41:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 15:41:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-12 15:41:06,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-12 15:41:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-12-12 15:41:06,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-12-12 15:41:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 15:41:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 15:41:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 15:41:06,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 15:41:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 15:41:06,946 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 15:41:07,085 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 15:41:07,087 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 15:41:07,362 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 15:41:07,485 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 15:41:07,485 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 15:41:07,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:41:07 BoogieIcfgContainer [2022-12-12 15:41:07,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 15:41:07,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 15:41:07,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 15:41:07,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 15:41:07,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 03:41:06" (1/3) ... [2022-12-12 15:41:07,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f611118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:41:07, skipping insertion in model container [2022-12-12 15:41:07,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:41:06" (2/3) ... [2022-12-12 15:41:07,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f611118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:41:07, skipping insertion in model container [2022-12-12 15:41:07,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:41:07" (3/3) ... [2022-12-12 15:41:07,498 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2022-12-12 15:41:07,510 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 15:41:07,510 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 15:41:07,511 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 15:41:07,569 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-12-12 15:41:07,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 181 transitions, 410 flow [2022-12-12 15:41:07,655 INFO L130 PetriNetUnfolder]: 2/175 cut-off events. [2022-12-12 15:41:07,655 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 15:41:07,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 175 events. 2/175 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 78 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 134. Up to 2 conditions per place. [2022-12-12 15:41:07,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 181 transitions, 410 flow [2022-12-12 15:41:07,661 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 159 transitions, 354 flow [2022-12-12 15:41:07,662 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 15:41:07,672 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 159 transitions, 354 flow [2022-12-12 15:41:07,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 159 transitions, 354 flow [2022-12-12 15:41:07,707 INFO L130 PetriNetUnfolder]: 2/159 cut-off events. [2022-12-12 15:41:07,708 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 15:41:07,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 159 events. 2/159 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 134. Up to 2 conditions per place. [2022-12-12 15:41:07,719 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 159 transitions, 354 flow [2022-12-12 15:41:07,719 INFO L226 LiptonReduction]: Number of co-enabled transitions 3042 [2022-12-12 15:41:14,072 INFO L241 LiptonReduction]: Total number of compositions: 121 [2022-12-12 15:41:14,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 15:41:14,086 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;@5cda5037, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 15:41:14,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-12 15:41:14,093 INFO L130 PetriNetUnfolder]: 0/37 cut-off events. [2022-12-12 15:41:14,093 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 15:41:14,093 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:14,093 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:14,094 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 4 more)] === [2022-12-12 15:41:14,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:14,097 INFO L85 PathProgramCache]: Analyzing trace with hash -152965531, now seen corresponding path program 1 times [2022-12-12 15:41:14,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:14,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444882013] [2022-12-12 15:41:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:14,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:15,366 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 15:41:15,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:15,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444882013] [2022-12-12 15:41:15,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444882013] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:15,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:15,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 15:41:15,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753223527] [2022-12-12 15:41:15,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:15,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 15:41:15,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:15,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 15:41:15,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 15:41:15,391 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 38 [2022-12-12 15:41:15,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 38 transitions, 112 flow. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:15,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:15,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 38 [2022-12-12 15:41:15,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:17,138 INFO L130 PetriNetUnfolder]: 18703/24423 cut-off events. [2022-12-12 15:41:17,138 INFO L131 PetriNetUnfolder]: For 1753/1753 co-relation queries the response was YES. [2022-12-12 15:41:17,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50812 conditions, 24423 events. 18703/24423 cut-off events. For 1753/1753 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 112611 event pairs, 9560 based on Foata normal form. 1/24424 useless extension candidates. Maximal degree in co-relation 49901. Up to 16400 conditions per place. [2022-12-12 15:41:17,229 INFO L137 encePairwiseOnDemand]: 23/38 looper letters, 76 selfloop transitions, 19 changer transitions 24/119 dead transitions. [2022-12-12 15:41:17,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 119 transitions, 557 flow [2022-12-12 15:41:17,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 15:41:17,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 15:41:17,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2022-12-12 15:41:17,237 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45112781954887216 [2022-12-12 15:41:17,238 INFO L175 Difference]: Start difference. First operand has 57 places, 38 transitions, 112 flow. Second operand 7 states and 120 transitions. [2022-12-12 15:41:17,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 119 transitions, 557 flow [2022-12-12 15:41:17,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 119 transitions, 503 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-12-12 15:41:17,282 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 220 flow [2022-12-12 15:41:17,284 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=220, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2022-12-12 15:41:17,286 INFO L295 CegarLoopForPetriNet]: 57 programPoint places, -2 predicate places. [2022-12-12 15:41:17,286 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 220 flow [2022-12-12 15:41:17,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:17,286 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:17,286 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:17,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 15:41:17,287 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 4 more)] === [2022-12-12 15:41:17,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:17,287 INFO L85 PathProgramCache]: Analyzing trace with hash -99509331, now seen corresponding path program 2 times [2022-12-12 15:41:17,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:17,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993493611] [2022-12-12 15:41:17,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:17,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:17,982 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 15:41:17,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:17,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993493611] [2022-12-12 15:41:17,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993493611] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:17,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:17,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 15:41:17,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607473723] [2022-12-12 15:41:17,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:17,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 15:41:17,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:17,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 15:41:17,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-12 15:41:17,987 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 38 [2022-12-12 15:41:17,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 220 flow. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:17,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:17,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 38 [2022-12-12 15:41:17,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:20,313 INFO L130 PetriNetUnfolder]: 27488/36209 cut-off events. [2022-12-12 15:41:20,314 INFO L131 PetriNetUnfolder]: For 29335/29335 co-relation queries the response was YES. [2022-12-12 15:41:20,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116402 conditions, 36209 events. 27488/36209 cut-off events. For 29335/29335 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 186414 event pairs, 5230 based on Foata normal form. 2/36211 useless extension candidates. Maximal degree in co-relation 116392. Up to 14123 conditions per place. [2022-12-12 15:41:20,433 INFO L137 encePairwiseOnDemand]: 23/38 looper letters, 130 selfloop transitions, 38 changer transitions 23/191 dead transitions. [2022-12-12 15:41:20,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 191 transitions, 1070 flow [2022-12-12 15:41:20,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 15:41:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 15:41:20,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2022-12-12 15:41:20,435 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5953947368421053 [2022-12-12 15:41:20,435 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 220 flow. Second operand 8 states and 181 transitions. [2022-12-12 15:41:20,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 191 transitions, 1070 flow [2022-12-12 15:41:20,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 191 transitions, 1068 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-12 15:41:20,444 INFO L231 Difference]: Finished difference. Result has 64 places, 74 transitions, 478 flow [2022-12-12 15:41:20,445 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=478, PETRI_PLACES=64, PETRI_TRANSITIONS=74} [2022-12-12 15:41:20,445 INFO L295 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2022-12-12 15:41:20,446 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 74 transitions, 478 flow [2022-12-12 15:41:20,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:20,446 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:20,446 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:20,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 15:41:20,446 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 4 more)] === [2022-12-12 15:41:20,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:20,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1010834503, now seen corresponding path program 3 times [2022-12-12 15:41:20,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:20,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774696197] [2022-12-12 15:41:20,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:20,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:20,617 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 15:41:20,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:20,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774696197] [2022-12-12 15:41:20,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774696197] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:20,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:20,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 15:41:20,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643128963] [2022-12-12 15:41:20,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:20,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 15:41:20,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:20,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 15:41:20,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 15:41:20,619 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 38 [2022-12-12 15:41:20,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 74 transitions, 478 flow. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:20,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:20,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 38 [2022-12-12 15:41:20,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:22,389 INFO L130 PetriNetUnfolder]: 19387/25440 cut-off events. [2022-12-12 15:41:22,390 INFO L131 PetriNetUnfolder]: For 65815/65815 co-relation queries the response was YES. [2022-12-12 15:41:22,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110022 conditions, 25440 events. 19387/25440 cut-off events. For 65815/65815 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 124603 event pairs, 6392 based on Foata normal form. 124/25564 useless extension candidates. Maximal degree in co-relation 90579. Up to 24586 conditions per place. [2022-12-12 15:41:22,494 INFO L137 encePairwiseOnDemand]: 26/38 looper letters, 100 selfloop transitions, 24 changer transitions 0/124 dead transitions. [2022-12-12 15:41:22,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 124 transitions, 943 flow [2022-12-12 15:41:22,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:41:22,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:41:22,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2022-12-12 15:41:22,496 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2022-12-12 15:41:22,496 INFO L175 Difference]: Start difference. First operand has 64 places, 74 transitions, 478 flow. Second operand 5 states and 93 transitions. [2022-12-12 15:41:22,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 124 transitions, 943 flow [2022-12-12 15:41:22,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 124 transitions, 830 flow, removed 39 selfloop flow, removed 3 redundant places. [2022-12-12 15:41:22,567 INFO L231 Difference]: Finished difference. Result has 67 places, 86 transitions, 552 flow [2022-12-12 15:41:22,567 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=67, PETRI_TRANSITIONS=86} [2022-12-12 15:41:22,568 INFO L295 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2022-12-12 15:41:22,568 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 86 transitions, 552 flow [2022-12-12 15:41:22,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:22,568 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:22,568 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:22,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 15:41:22,568 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 4 more)] === [2022-12-12 15:41:22,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:22,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1806735023, now seen corresponding path program 4 times [2022-12-12 15:41:22,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:22,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597965306] [2022-12-12 15:41:22,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:22,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:22,756 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 15:41:22,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:22,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597965306] [2022-12-12 15:41:22,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597965306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:22,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:22,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 15:41:22,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905895862] [2022-12-12 15:41:22,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:22,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 15:41:22,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:22,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 15:41:22,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-12 15:41:22,760 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 38 [2022-12-12 15:41:22,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 86 transitions, 552 flow. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:22,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:22,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 38 [2022-12-12 15:41:22,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:26,252 INFO L130 PetriNetUnfolder]: 36230/48037 cut-off events. [2022-12-12 15:41:26,252 INFO L131 PetriNetUnfolder]: For 182636/182636 co-relation queries the response was YES. [2022-12-12 15:41:26,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213188 conditions, 48037 events. 36230/48037 cut-off events. For 182636/182636 co-relation queries the response was YES. Maximal size of possible extension queue 1781. Compared 266423 event pairs, 6289 based on Foata normal form. 98/48135 useless extension candidates. Maximal degree in co-relation 143123. Up to 19669 conditions per place. [2022-12-12 15:41:26,499 INFO L137 encePairwiseOnDemand]: 25/38 looper letters, 196 selfloop transitions, 214 changer transitions 0/410 dead transitions. [2022-12-12 15:41:26,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 410 transitions, 3258 flow [2022-12-12 15:41:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 15:41:26,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 15:41:26,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 254 transitions. [2022-12-12 15:41:26,501 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5141700404858299 [2022-12-12 15:41:26,501 INFO L175 Difference]: Start difference. First operand has 67 places, 86 transitions, 552 flow. Second operand 13 states and 254 transitions. [2022-12-12 15:41:26,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 410 transitions, 3258 flow [2022-12-12 15:41:26,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 410 transitions, 3071 flow, removed 90 selfloop flow, removed 1 redundant places. [2022-12-12 15:41:26,640 INFO L231 Difference]: Finished difference. Result has 81 places, 280 transitions, 2576 flow [2022-12-12 15:41:26,640 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2576, PETRI_PLACES=81, PETRI_TRANSITIONS=280} [2022-12-12 15:41:26,640 INFO L295 CegarLoopForPetriNet]: 57 programPoint places, 24 predicate places. [2022-12-12 15:41:26,641 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 280 transitions, 2576 flow [2022-12-12 15:41:26,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:26,641 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:26,641 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:26,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 15:41:26,641 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 4 more)] === [2022-12-12 15:41:26,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:26,642 INFO L85 PathProgramCache]: Analyzing trace with hash 931232005, now seen corresponding path program 5 times [2022-12-12 15:41:26,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:26,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086690607] [2022-12-12 15:41:26,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:26,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:26,805 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 15:41:26,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:26,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086690607] [2022-12-12 15:41:26,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086690607] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:26,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:26,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 15:41:26,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485307941] [2022-12-12 15:41:26,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:26,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 15:41:26,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:26,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 15:41:26,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-12 15:41:26,807 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 38 [2022-12-12 15:41:26,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 280 transitions, 2576 flow. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:26,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:26,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 38 [2022-12-12 15:41:26,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:32,663 INFO L130 PetriNetUnfolder]: 48972/65415 cut-off events. [2022-12-12 15:41:32,663 INFO L131 PetriNetUnfolder]: For 212341/212341 co-relation queries the response was YES. [2022-12-12 15:41:32,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336522 conditions, 65415 events. 48972/65415 cut-off events. For 212341/212341 co-relation queries the response was YES. Maximal size of possible extension queue 2527. Compared 382396 event pairs, 6662 based on Foata normal form. 404/65819 useless extension candidates. Maximal degree in co-relation 272242. Up to 27888 conditions per place. [2022-12-12 15:41:33,032 INFO L137 encePairwiseOnDemand]: 25/38 looper letters, 261 selfloop transitions, 284 changer transitions 0/545 dead transitions. [2022-12-12 15:41:33,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 545 transitions, 5574 flow [2022-12-12 15:41:33,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 15:41:33,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 15:41:33,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2022-12-12 15:41:33,033 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5382775119617225 [2022-12-12 15:41:33,033 INFO L175 Difference]: Start difference. First operand has 81 places, 280 transitions, 2576 flow. Second operand 11 states and 225 transitions. [2022-12-12 15:41:33,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 545 transitions, 5574 flow [2022-12-12 15:41:38,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 545 transitions, 5005 flow, removed 202 selfloop flow, removed 4 redundant places. [2022-12-12 15:41:38,099 INFO L231 Difference]: Finished difference. Result has 89 places, 417 transitions, 4460 flow [2022-12-12 15:41:38,099 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2240, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4460, PETRI_PLACES=89, PETRI_TRANSITIONS=417} [2022-12-12 15:41:38,100 INFO L295 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2022-12-12 15:41:38,100 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 417 transitions, 4460 flow [2022-12-12 15:41:38,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:38,100 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:38,100 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:38,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 15:41:38,102 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 4 more)] === [2022-12-12 15:41:38,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:38,102 INFO L85 PathProgramCache]: Analyzing trace with hash 887945503, now seen corresponding path program 6 times [2022-12-12 15:41:38,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:38,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996717771] [2022-12-12 15:41:38,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:38,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:38,314 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 15:41:38,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:38,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996717771] [2022-12-12 15:41:38,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996717771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:38,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:38,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 15:41:38,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696605000] [2022-12-12 15:41:38,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:38,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 15:41:38,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:38,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 15:41:38,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-12 15:41:38,317 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 38 [2022-12-12 15:41:38,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 417 transitions, 4460 flow. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:38,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:38,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 38 [2022-12-12 15:41:38,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:41:46,481 INFO L130 PetriNetUnfolder]: 69539/93192 cut-off events. [2022-12-12 15:41:46,482 INFO L131 PetriNetUnfolder]: For 293615/293615 co-relation queries the response was YES. [2022-12-12 15:41:46,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510147 conditions, 93192 events. 69539/93192 cut-off events. For 293615/293615 co-relation queries the response was YES. Maximal size of possible extension queue 3835. Compared 574456 event pairs, 9064 based on Foata normal form. 1068/94260 useless extension candidates. Maximal degree in co-relation 414472. Up to 55750 conditions per place. [2022-12-12 15:41:47,061 INFO L137 encePairwiseOnDemand]: 25/38 looper letters, 375 selfloop transitions, 351 changer transitions 0/726 dead transitions. [2022-12-12 15:41:47,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 726 transitions, 8816 flow [2022-12-12 15:41:47,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 15:41:47,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 15:41:47,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2022-12-12 15:41:47,063 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2022-12-12 15:41:47,063 INFO L175 Difference]: Start difference. First operand has 89 places, 417 transitions, 4460 flow. Second operand 9 states and 180 transitions. [2022-12-12 15:41:47,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 726 transitions, 8816 flow [2022-12-12 15:41:52,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 726 transitions, 8737 flow, removed 24 selfloop flow, removed 3 redundant places. [2022-12-12 15:41:52,816 INFO L231 Difference]: Finished difference. Result has 97 places, 610 transitions, 8248 flow [2022-12-12 15:41:52,817 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4401, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8248, PETRI_PLACES=97, PETRI_TRANSITIONS=610} [2022-12-12 15:41:52,817 INFO L295 CegarLoopForPetriNet]: 57 programPoint places, 40 predicate places. [2022-12-12 15:41:52,817 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 610 transitions, 8248 flow [2022-12-12 15:41:52,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:52,817 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:41:52,818 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:41:52,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 15:41:52,824 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 4 more)] === [2022-12-12 15:41:52,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:41:52,825 INFO L85 PathProgramCache]: Analyzing trace with hash 719187275, now seen corresponding path program 7 times [2022-12-12 15:41:52,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:41:52,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840342725] [2022-12-12 15:41:52,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:41:52,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:41:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:41:53,080 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 15:41:53,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:41:53,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840342725] [2022-12-12 15:41:53,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840342725] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:41:53,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:41:53,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 15:41:53,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034398873] [2022-12-12 15:41:53,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:41:53,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 15:41:53,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:41:53,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 15:41:53,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-12-12 15:41:53,083 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 38 [2022-12-12 15:41:53,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 610 transitions, 8248 flow. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:41:53,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:41:53,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 38 [2022-12-12 15:41:53,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:42:03,975 INFO L130 PetriNetUnfolder]: 73724/98797 cut-off events. [2022-12-12 15:42:03,975 INFO L131 PetriNetUnfolder]: For 480363/480363 co-relation queries the response was YES. [2022-12-12 15:42:04,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618378 conditions, 98797 events. 73724/98797 cut-off events. For 480363/480363 co-relation queries the response was YES. Maximal size of possible extension queue 4086. Compared 611640 event pairs, 10725 based on Foata normal form. 1360/100157 useless extension candidates. Maximal degree in co-relation 508160. Up to 91550 conditions per place. [2022-12-12 15:42:04,795 INFO L137 encePairwiseOnDemand]: 25/38 looper letters, 604 selfloop transitions, 424 changer transitions 0/1028 dead transitions. [2022-12-12 15:42:04,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 1028 transitions, 14601 flow [2022-12-12 15:42:04,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-12 15:42:04,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-12 15:42:04,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 332 transitions. [2022-12-12 15:42:04,797 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.41604010025062654 [2022-12-12 15:42:04,797 INFO L175 Difference]: Start difference. First operand has 97 places, 610 transitions, 8248 flow. Second operand 21 states and 332 transitions. [2022-12-12 15:42:04,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 1028 transitions, 14601 flow [2022-12-12 15:42:11,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 1028 transitions, 14588 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 15:42:11,659 INFO L231 Difference]: Finished difference. Result has 123 places, 842 transitions, 13052 flow [2022-12-12 15:42:11,659 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8235, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=13052, PETRI_PLACES=123, PETRI_TRANSITIONS=842} [2022-12-12 15:42:11,660 INFO L295 CegarLoopForPetriNet]: 57 programPoint places, 66 predicate places. [2022-12-12 15:42:11,660 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 842 transitions, 13052 flow [2022-12-12 15:42:11,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:42:11,660 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:42:11,660 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:42:11,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 15:42:11,661 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 4 more)] === [2022-12-12 15:42:11,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:42:11,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1691621447, now seen corresponding path program 8 times [2022-12-12 15:42:11,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:42:11,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755329775] [2022-12-12 15:42:11,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:11,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:42:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:11,891 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 15:42:11,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:42:11,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755329775] [2022-12-12 15:42:11,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755329775] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:42:11,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:42:11,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 15:42:11,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177495630] [2022-12-12 15:42:11,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:42:11,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 15:42:11,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:42:11,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 15:42:11,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-12 15:42:11,892 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 38 [2022-12-12 15:42:11,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 842 transitions, 13052 flow. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:42:11,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:42:11,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 38 [2022-12-12 15:42:11,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:42:25,648 INFO L130 PetriNetUnfolder]: 75233/100856 cut-off events. [2022-12-12 15:42:25,648 INFO L131 PetriNetUnfolder]: For 600844/600844 co-relation queries the response was YES. [2022-12-12 15:42:26,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667255 conditions, 100856 events. 75233/100856 cut-off events. For 600844/600844 co-relation queries the response was YES. Maximal size of possible extension queue 4151. Compared 626902 event pairs, 10868 based on Foata normal form. 566/101422 useless extension candidates. Maximal degree in co-relation 647037. Up to 95429 conditions per place. [2022-12-12 15:42:26,539 INFO L137 encePairwiseOnDemand]: 26/38 looper letters, 592 selfloop transitions, 491 changer transitions 0/1083 dead transitions. [2022-12-12 15:42:26,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 1083 transitions, 18171 flow [2022-12-12 15:42:26,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 15:42:26,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 15:42:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2022-12-12 15:42:26,540 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4688995215311005 [2022-12-12 15:42:26,540 INFO L175 Difference]: Start difference. First operand has 123 places, 842 transitions, 13052 flow. Second operand 11 states and 196 transitions. [2022-12-12 15:42:26,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 1083 transitions, 18171 flow [2022-12-12 15:42:36,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 1083 transitions, 17567 flow, removed 148 selfloop flow, removed 6 redundant places. [2022-12-12 15:42:36,523 INFO L231 Difference]: Finished difference. Result has 128 places, 987 transitions, 16163 flow [2022-12-12 15:42:36,524 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12572, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=842, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16163, PETRI_PLACES=128, PETRI_TRANSITIONS=987} [2022-12-12 15:42:36,524 INFO L295 CegarLoopForPetriNet]: 57 programPoint places, 71 predicate places. [2022-12-12 15:42:36,524 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 987 transitions, 16163 flow [2022-12-12 15:42:36,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:42:36,525 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:42:36,525 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:42:36,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 15:42:36,525 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 4 more)] === [2022-12-12 15:42:36,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:42:36,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1225420435, now seen corresponding path program 9 times [2022-12-12 15:42:36,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:42:36,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806959425] [2022-12-12 15:42:36,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:42:36,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:42:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:42:36,705 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 15:42:36,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:42:36,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806959425] [2022-12-12 15:42:36,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806959425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:42:36,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:42:36,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 15:42:36,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313239731] [2022-12-12 15:42:36,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:42:36,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 15:42:36,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:42:36,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 15:42:36,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-12 15:42:36,710 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 38 [2022-12-12 15:42:36,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 987 transitions, 16163 flow. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:42:36,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:42:36,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 38 [2022-12-12 15:42:36,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:42:51,937 INFO L130 PetriNetUnfolder]: 79825/107458 cut-off events. [2022-12-12 15:42:51,937 INFO L131 PetriNetUnfolder]: For 656638/656638 co-relation queries the response was YES. [2022-12-12 15:42:52,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714967 conditions, 107458 events. 79825/107458 cut-off events. For 656638/656638 co-relation queries the response was YES. Maximal size of possible extension queue 4534. Compared 681058 event pairs, 9557 based on Foata normal form. 2298/109756 useless extension candidates. Maximal degree in co-relation 691876. Up to 57984 conditions per place. [2022-12-12 15:42:52,855 INFO L137 encePairwiseOnDemand]: 25/38 looper letters, 430 selfloop transitions, 952 changer transitions 2/1384 dead transitions. [2022-12-12 15:42:52,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 1384 transitions, 24592 flow [2022-12-12 15:42:52,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 15:42:52,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 15:42:52,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2022-12-12 15:42:52,856 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2022-12-12 15:42:52,856 INFO L175 Difference]: Start difference. First operand has 128 places, 987 transitions, 16163 flow. Second operand 9 states and 190 transitions. [2022-12-12 15:42:52,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 1384 transitions, 24592 flow [2022-12-12 15:43:04,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 1384 transitions, 23874 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-12 15:43:04,243 INFO L231 Difference]: Finished difference. Result has 131 places, 1248 transitions, 22737 flow [2022-12-12 15:43:04,243 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15322, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=969, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=673, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22737, PETRI_PLACES=131, PETRI_TRANSITIONS=1248} [2022-12-12 15:43:04,244 INFO L295 CegarLoopForPetriNet]: 57 programPoint places, 74 predicate places. [2022-12-12 15:43:04,244 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 1248 transitions, 22737 flow [2022-12-12 15:43:04,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:43:04,244 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:43:04,244 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:43:04,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 15:43:04,244 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 4 more)] === [2022-12-12 15:43:04,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:43:04,245 INFO L85 PathProgramCache]: Analyzing trace with hash -302848533, now seen corresponding path program 10 times [2022-12-12 15:43:04,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:43:04,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103711016] [2022-12-12 15:43:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:43:04,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:43:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:43:04,474 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 15:43:04,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:43:04,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103711016] [2022-12-12 15:43:04,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103711016] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:43:04,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:43:04,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-12 15:43:04,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323405495] [2022-12-12 15:43:04,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:43:04,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 15:43:04,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:43:04,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 15:43:04,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-12 15:43:04,476 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 38 [2022-12-12 15:43:04,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 1248 transitions, 22737 flow. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:43:04,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:43:04,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 38 [2022-12-12 15:43:04,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:43:21,955 INFO L130 PetriNetUnfolder]: 81588/109839 cut-off events. [2022-12-12 15:43:21,955 INFO L131 PetriNetUnfolder]: For 827259/827259 co-relation queries the response was YES. [2022-12-12 15:43:22,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781668 conditions, 109839 events. 81588/109839 cut-off events. For 827259/827259 co-relation queries the response was YES. Maximal size of possible extension queue 4718. Compared 698208 event pairs, 11465 based on Foata normal form. 350/110189 useless extension candidates. Maximal degree in co-relation 754730. Up to 101126 conditions per place. [2022-12-12 15:43:22,933 INFO L137 encePairwiseOnDemand]: 25/38 looper letters, 666 selfloop transitions, 825 changer transitions 0/1491 dead transitions. [2022-12-12 15:43:22,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 1491 transitions, 28990 flow [2022-12-12 15:43:22,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 15:43:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 15:43:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 251 transitions. [2022-12-12 15:43:22,934 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4128289473684211 [2022-12-12 15:43:22,934 INFO L175 Difference]: Start difference. First operand has 131 places, 1248 transitions, 22737 flow. Second operand 16 states and 251 transitions. [2022-12-12 15:43:22,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 1491 transitions, 28990 flow [2022-12-12 15:43:35,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 1491 transitions, 27813 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-12-12 15:43:35,940 INFO L231 Difference]: Finished difference. Result has 144 places, 1380 transitions, 26491 flow [2022-12-12 15:43:35,941 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=21723, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=693, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=26491, PETRI_PLACES=144, PETRI_TRANSITIONS=1380} [2022-12-12 15:43:35,941 INFO L295 CegarLoopForPetriNet]: 57 programPoint places, 87 predicate places. [2022-12-12 15:43:35,941 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 1380 transitions, 26491 flow [2022-12-12 15:43:35,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:43:35,942 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:43:35,942 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:43:35,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 15:43:35,942 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 4 more)] === [2022-12-12 15:43:35,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:43:35,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1428468127, now seen corresponding path program 11 times [2022-12-12 15:43:35,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:43:35,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054282873] [2022-12-12 15:43:35,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:43:35,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:43:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:43:36,104 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 15:43:36,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:43:36,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054282873] [2022-12-12 15:43:36,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054282873] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:43:36,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:43:36,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 15:43:36,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382211995] [2022-12-12 15:43:36,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:43:36,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 15:43:36,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:43:36,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 15:43:36,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-12 15:43:36,106 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 38 [2022-12-12 15:43:36,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 1380 transitions, 26491 flow. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:43:36,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:43:36,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 38 [2022-12-12 15:43:36,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand