/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/pthread/triangular-longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 14:22:07,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 14:22:07,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 14:22:07,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 14:22:07,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 14:22:07,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 14:22:07,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 14:22:07,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 14:22:07,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 14:22:07,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 14:22:07,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 14:22:07,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 14:22:07,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 14:22:07,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 14:22:07,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 14:22:07,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 14:22:07,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 14:22:07,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 14:22:07,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 14:22:07,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 14:22:07,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 14:22:07,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 14:22:07,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 14:22:07,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 14:22:07,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 14:22:07,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 14:22:07,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 14:22:07,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 14:22:07,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 14:22:07,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 14:22:07,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 14:22:07,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 14:22:07,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 14:22:07,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 14:22:07,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 14:22:07,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 14:22:07,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 14:22:07,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 14:22:07,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 14:22:07,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 14:22:07,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 14:22:07,718 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 14:22:07,752 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 14:22:07,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 14:22:07,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 14:22:07,753 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 14:22:07,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 14:22:07,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 14:22:07,755 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 14:22:07,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 14:22:07,755 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 14:22:07,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 14:22:07,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 14:22:07,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 14:22:07,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 14:22:07,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 14:22:07,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 14:22:07,757 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 14:22:07,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 14:22:07,757 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 14:22:07,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 14:22:07,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 14:22:07,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 14:22:07,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 14:22:07,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 14:22:07,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:22:07,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 14:22:07,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 14:22:07,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 14:22:07,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 14:22:07,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 14:22:07,759 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 14:22:07,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 14:22:08,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 14:22:08,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 14:22:08,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 14:22:08,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 14:22:08,107 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 14:22:08,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2022-12-12 14:22:09,295 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 14:22:09,539 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 14:22:09,539 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2022-12-12 14:22:09,551 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60713733e/ebf68d2a670940c3baa15386bb5edaa3/FLAG7d86dc5d8 [2022-12-12 14:22:09,565 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60713733e/ebf68d2a670940c3baa15386bb5edaa3 [2022-12-12 14:22:09,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 14:22:09,569 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 14:22:09,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 14:22:09,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 14:22:09,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 14:22:09,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:22:09" (1/1) ... [2022-12-12 14:22:09,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f21e38f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:22:09, skipping insertion in model container [2022-12-12 14:22:09,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:22:09" (1/1) ... [2022-12-12 14:22:09,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 14:22:09,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 14:22:09,911 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:22:09,911 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:22:09,914 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:22:09,916 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:22:09,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:22:09,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:22:09,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:22:09,927 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:22:09,927 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i[30961,30974] [2022-12-12 14:22:09,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:22:09,939 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 14:22:09,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:22:09,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:22:09,977 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:22:09,978 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:22:09,980 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:22:09,980 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:22:09,980 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:22:09,981 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:22:09,981 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i[30961,30974] [2022-12-12 14:22:09,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:22:10,021 INFO L208 MainTranslator]: Completed translation [2022-12-12 14:22:10,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:22:10 WrapperNode [2022-12-12 14:22:10,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 14:22:10,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 14:22:10,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 14:22:10,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 14:22:10,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:22:10" (1/1) ... [2022-12-12 14:22:10,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:22:10" (1/1) ... [2022-12-12 14:22:10,059 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-12-12 14:22:10,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 14:22:10,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 14:22:10,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 14:22:10,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 14:22:10,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:22:10" (1/1) ... [2022-12-12 14:22:10,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:22:10" (1/1) ... [2022-12-12 14:22:10,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:22:10" (1/1) ... [2022-12-12 14:22:10,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:22:10" (1/1) ... [2022-12-12 14:22:10,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:22:10" (1/1) ... [2022-12-12 14:22:10,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:22:10" (1/1) ... [2022-12-12 14:22:10,085 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:22:10" (1/1) ... [2022-12-12 14:22:10,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:22:10" (1/1) ... [2022-12-12 14:22:10,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 14:22:10,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 14:22:10,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 14:22:10,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 14:22:10,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:22:10" (1/1) ... [2022-12-12 14:22:10,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:22:10,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:22:10,128 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 14:22:10,134 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 14:22:10,159 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-12 14:22:10,159 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-12 14:22:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-12 14:22:10,160 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-12 14:22:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 14:22:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 14:22:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 14:22:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 14:22:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 14:22:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 14:22:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 14:22:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 14:22:10,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 14:22:10,161 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 14:22:10,284 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 14:22:10,285 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 14:22:10,442 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 14:22:10,447 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 14:22:10,447 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-12 14:22:10,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:22:10 BoogieIcfgContainer [2022-12-12 14:22:10,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 14:22:10,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 14:22:10,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 14:22:10,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 14:22:10,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 02:22:09" (1/3) ... [2022-12-12 14:22:10,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24112908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:22:10, skipping insertion in model container [2022-12-12 14:22:10,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:22:10" (2/3) ... [2022-12-12 14:22:10,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24112908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:22:10, skipping insertion in model container [2022-12-12 14:22:10,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:22:10" (3/3) ... [2022-12-12 14:22:10,456 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2022-12-12 14:22:10,473 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 14:22:10,473 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 14:22:10,474 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 14:22:10,546 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 14:22:10,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 142 flow [2022-12-12 14:22:10,640 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2022-12-12 14:22:10,641 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:22:10,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-12-12 14:22:10,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 66 transitions, 142 flow [2022-12-12 14:22:10,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 134 flow [2022-12-12 14:22:10,653 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 14:22:10,677 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 64 transitions, 134 flow [2022-12-12 14:22:10,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 64 transitions, 134 flow [2022-12-12 14:22:10,703 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2022-12-12 14:22:10,704 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:22:10,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-12-12 14:22:10,707 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 64 transitions, 134 flow [2022-12-12 14:22:10,707 INFO L226 LiptonReduction]: Number of co-enabled transitions 1078 [2022-12-12 14:22:13,084 INFO L241 LiptonReduction]: Total number of compositions: 51 [2022-12-12 14:22:13,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 14:22:13,103 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;@59af9a6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 14:22:13,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 14:22:13,107 INFO L130 PetriNetUnfolder]: 2/25 cut-off events. [2022-12-12 14:22:13,108 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 14:22:13,108 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:22:13,108 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-12 14:22:13,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:22:13,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:22:13,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1005742466, now seen corresponding path program 1 times [2022-12-12 14:22:13,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:22:13,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304436272] [2022-12-12 14:22:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:13,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:22:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:13,489 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 14:22:13,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:22:13,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304436272] [2022-12-12 14:22:13,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304436272] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:22:13,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:22:13,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:22:13,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368403575] [2022-12-12 14:22:13,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:22:13,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 14:22:13,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:22:13,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 14:22:13,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 14:22:13,524 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 14:22:13,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 14:22:13,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:22:13,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 14:22:13,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:22:13,721 INFO L130 PetriNetUnfolder]: 681/1079 cut-off events. [2022-12-12 14:22:13,721 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-12 14:22:13,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2143 conditions, 1079 events. 681/1079 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5102 event pairs, 66 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 2133. Up to 713 conditions per place. [2022-12-12 14:22:13,733 INFO L137 encePairwiseOnDemand]: 20/27 looper letters, 38 selfloop transitions, 10 changer transitions 8/60 dead transitions. [2022-12-12 14:22:13,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 60 transitions, 238 flow [2022-12-12 14:22:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 14:22:13,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 14:22:13,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2022-12-12 14:22:13,744 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2022-12-12 14:22:13,746 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 60 flow. Second operand 4 states and 73 transitions. [2022-12-12 14:22:13,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 60 transitions, 238 flow [2022-12-12 14:22:13,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 60 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 14:22:13,754 INFO L231 Difference]: Finished difference. Result has 35 places, 35 transitions, 117 flow [2022-12-12 14:22:13,756 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2022-12-12 14:22:13,760 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2022-12-12 14:22:13,760 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 35 transitions, 117 flow [2022-12-12 14:22:13,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 14:22:13,760 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:22:13,761 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:22:13,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 14:22:13,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:22:13,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:22:13,769 INFO L85 PathProgramCache]: Analyzing trace with hash -152048275, now seen corresponding path program 1 times [2022-12-12 14:22:13,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:22:13,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503918405] [2022-12-12 14:22:13,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:13,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:22:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:13,905 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 14:22:13,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:22:13,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503918405] [2022-12-12 14:22:13,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503918405] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:22:13,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:22:13,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:22:13,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460191371] [2022-12-12 14:22:13,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:22:13,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 14:22:13,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:22:13,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 14:22:13,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 14:22:13,908 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 14:22:13,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 14:22:13,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:22:13,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 14:22:13,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:22:14,157 INFO L130 PetriNetUnfolder]: 1006/1624 cut-off events. [2022-12-12 14:22:14,157 INFO L131 PetriNetUnfolder]: For 356/356 co-relation queries the response was YES. [2022-12-12 14:22:14,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3947 conditions, 1624 events. 1006/1624 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8388 event pairs, 109 based on Foata normal form. 84/724 useless extension candidates. Maximal degree in co-relation 3935. Up to 826 conditions per place. [2022-12-12 14:22:14,165 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 77 selfloop transitions, 24 changer transitions 3/108 dead transitions. [2022-12-12 14:22:14,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 108 transitions, 537 flow [2022-12-12 14:22:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 14:22:14,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 14:22:14,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2022-12-12 14:22:14,169 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.691358024691358 [2022-12-12 14:22:14,169 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 117 flow. Second operand 6 states and 112 transitions. [2022-12-12 14:22:14,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 108 transitions, 537 flow [2022-12-12 14:22:14,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 108 transitions, 537 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-12 14:22:14,173 INFO L231 Difference]: Finished difference. Result has 43 places, 62 transitions, 327 flow [2022-12-12 14:22:14,173 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=327, PETRI_PLACES=43, PETRI_TRANSITIONS=62} [2022-12-12 14:22:14,174 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2022-12-12 14:22:14,174 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 62 transitions, 327 flow [2022-12-12 14:22:14,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 14:22:14,174 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:22:14,174 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:22:14,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 14:22:14,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:22:14,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:22:14,177 INFO L85 PathProgramCache]: Analyzing trace with hash -152054754, now seen corresponding path program 1 times [2022-12-12 14:22:14,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:22:14,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722552485] [2022-12-12 14:22:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:14,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:22:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:14,293 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 14:22:14,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:22:14,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722552485] [2022-12-12 14:22:14,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722552485] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:22:14,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:22:14,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 14:22:14,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79203915] [2022-12-12 14:22:14,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:22:14,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 14:22:14,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:22:14,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 14:22:14,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 14:22:14,296 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 14:22:14,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 62 transitions, 327 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 14:22:14,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:22:14,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 14:22:14,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:22:14,538 INFO L130 PetriNetUnfolder]: 1047/1754 cut-off events. [2022-12-12 14:22:14,538 INFO L131 PetriNetUnfolder]: For 1576/1576 co-relation queries the response was YES. [2022-12-12 14:22:14,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5712 conditions, 1754 events. 1047/1754 cut-off events. For 1576/1576 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 9837 event pairs, 163 based on Foata normal form. 84/883 useless extension candidates. Maximal degree in co-relation 5694. Up to 798 conditions per place. [2022-12-12 14:22:14,547 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 61 selfloop transitions, 45 changer transitions 36/146 dead transitions. [2022-12-12 14:22:14,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 146 transitions, 977 flow [2022-12-12 14:22:14,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 14:22:14,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 14:22:14,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2022-12-12 14:22:14,549 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6878306878306878 [2022-12-12 14:22:14,549 INFO L175 Difference]: Start difference. First operand has 43 places, 62 transitions, 327 flow. Second operand 7 states and 130 transitions. [2022-12-12 14:22:14,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 146 transitions, 977 flow [2022-12-12 14:22:14,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 146 transitions, 961 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-12-12 14:22:14,562 INFO L231 Difference]: Finished difference. Result has 53 places, 85 transitions, 622 flow [2022-12-12 14:22:14,562 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=622, PETRI_PLACES=53, PETRI_TRANSITIONS=85} [2022-12-12 14:22:14,563 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2022-12-12 14:22:14,563 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 85 transitions, 622 flow [2022-12-12 14:22:14,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 14:22:14,563 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:22:14,563 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:22:14,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 14:22:14,563 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:22:14,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:22:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash -784544093, now seen corresponding path program 1 times [2022-12-12 14:22:14,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:22:14,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377199261] [2022-12-12 14:22:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:14,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:22:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:14,640 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 14:22:14,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:22:14,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377199261] [2022-12-12 14:22:14,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377199261] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:22:14,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:22:14,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 14:22:14,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538899391] [2022-12-12 14:22:14,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:22:14,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 14:22:14,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:22:14,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 14:22:14,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 14:22:14,643 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 14:22:14,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 85 transitions, 622 flow. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 14:22:14,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:22:14,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 14:22:14,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:22:14,955 INFO L130 PetriNetUnfolder]: 1341/2261 cut-off events. [2022-12-12 14:22:14,955 INFO L131 PetriNetUnfolder]: For 5138/5138 co-relation queries the response was YES. [2022-12-12 14:22:14,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8464 conditions, 2261 events. 1341/2261 cut-off events. For 5138/5138 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 13095 event pairs, 108 based on Foata normal form. 98/1179 useless extension candidates. Maximal degree in co-relation 8440. Up to 803 conditions per place. [2022-12-12 14:22:14,969 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 89 selfloop transitions, 57 changer transitions 18/168 dead transitions. [2022-12-12 14:22:14,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 168 transitions, 1316 flow [2022-12-12 14:22:14,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 14:22:14,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 14:22:14,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2022-12-12 14:22:14,971 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2022-12-12 14:22:14,971 INFO L175 Difference]: Start difference. First operand has 53 places, 85 transitions, 622 flow. Second operand 8 states and 148 transitions. [2022-12-12 14:22:14,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 168 transitions, 1316 flow [2022-12-12 14:22:14,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 168 transitions, 1278 flow, removed 19 selfloop flow, removed 0 redundant places. [2022-12-12 14:22:14,997 INFO L231 Difference]: Finished difference. Result has 64 places, 100 transitions, 912 flow [2022-12-12 14:22:14,997 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=912, PETRI_PLACES=64, PETRI_TRANSITIONS=100} [2022-12-12 14:22:14,998 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2022-12-12 14:22:14,998 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 100 transitions, 912 flow [2022-12-12 14:22:14,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 14:22:14,998 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:22:14,998 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:22:14,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 14:22:14,999 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:22:14,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:22:14,999 INFO L85 PathProgramCache]: Analyzing trace with hash -737184804, now seen corresponding path program 1 times [2022-12-12 14:22:14,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:22:14,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779586219] [2022-12-12 14:22:15,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:15,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:22:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:15,075 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 14:22:15,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:22:15,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779586219] [2022-12-12 14:22:15,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779586219] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:22:15,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:22:15,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 14:22:15,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863340885] [2022-12-12 14:22:15,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:22:15,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 14:22:15,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:22:15,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 14:22:15,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 14:22:15,077 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 14:22:15,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 100 transitions, 912 flow. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 14:22:15,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:22:15,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 14:22:15,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:22:15,411 INFO L130 PetriNetUnfolder]: 1256/2127 cut-off events. [2022-12-12 14:22:15,411 INFO L131 PetriNetUnfolder]: For 8028/8028 co-relation queries the response was YES. [2022-12-12 14:22:15,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9781 conditions, 2127 events. 1256/2127 cut-off events. For 8028/8028 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 12556 event pairs, 87 based on Foata normal form. 98/1144 useless extension candidates. Maximal degree in co-relation 9751. Up to 589 conditions per place. [2022-12-12 14:22:15,425 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 51 selfloop transitions, 67 changer transitions 51/173 dead transitions. [2022-12-12 14:22:15,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 173 transitions, 1732 flow [2022-12-12 14:22:15,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 14:22:15,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 14:22:15,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2022-12-12 14:22:15,427 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-12-12 14:22:15,427 INFO L175 Difference]: Start difference. First operand has 64 places, 100 transitions, 912 flow. Second operand 8 states and 144 transitions. [2022-12-12 14:22:15,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 173 transitions, 1732 flow [2022-12-12 14:22:15,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 173 transitions, 1639 flow, removed 21 selfloop flow, removed 4 redundant places. [2022-12-12 14:22:15,491 INFO L231 Difference]: Finished difference. Result has 70 places, 100 transitions, 1098 flow [2022-12-12 14:22:15,491 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1098, PETRI_PLACES=70, PETRI_TRANSITIONS=100} [2022-12-12 14:22:15,492 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 38 predicate places. [2022-12-12 14:22:15,492 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 100 transitions, 1098 flow [2022-12-12 14:22:15,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 14:22:15,492 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:22:15,492 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:22:15,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 14:22:15,492 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:22:15,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:22:15,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1436741955, now seen corresponding path program 1 times [2022-12-12 14:22:15,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:22:15,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911618229] [2022-12-12 14:22:15,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:15,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:22:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:15,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:22:15,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911618229] [2022-12-12 14:22:15,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911618229] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 14:22:15,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760694684] [2022-12-12 14:22:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:15,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:22:15,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:22:15,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 14:22:15,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 14:22:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:15,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 14:22:15,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 14:22:15,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:15,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 14:22:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:15,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760694684] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 14:22:15,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 14:22:15,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-12 14:22:15,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596159475] [2022-12-12 14:22:15,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 14:22:15,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 14:22:15,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:22:15,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 14:22:15,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-12-12 14:22:15,994 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 14:22:15,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 100 transitions, 1098 flow. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 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 14:22:15,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:22:15,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 14:22:15,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:22:16,464 INFO L130 PetriNetUnfolder]: 1403/2475 cut-off events. [2022-12-12 14:22:16,464 INFO L131 PetriNetUnfolder]: For 17013/17013 co-relation queries the response was YES. [2022-12-12 14:22:16,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12123 conditions, 2475 events. 1403/2475 cut-off events. For 17013/17013 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 14712 event pairs, 286 based on Foata normal form. 294/1484 useless extension candidates. Maximal degree in co-relation 12091. Up to 1305 conditions per place. [2022-12-12 14:22:16,480 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 82 selfloop transitions, 31 changer transitions 99/216 dead transitions. [2022-12-12 14:22:16,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 216 transitions, 2344 flow [2022-12-12 14:22:16,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 14:22:16,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 14:22:16,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 214 transitions. [2022-12-12 14:22:16,482 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6604938271604939 [2022-12-12 14:22:16,482 INFO L175 Difference]: Start difference. First operand has 70 places, 100 transitions, 1098 flow. Second operand 12 states and 214 transitions. [2022-12-12 14:22:16,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 216 transitions, 2344 flow [2022-12-12 14:22:16,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 216 transitions, 2184 flow, removed 53 selfloop flow, removed 5 redundant places. [2022-12-12 14:22:16,524 INFO L231 Difference]: Finished difference. Result has 82 places, 97 transitions, 1100 flow [2022-12-12 14:22:16,524 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1100, PETRI_PLACES=82, PETRI_TRANSITIONS=97} [2022-12-12 14:22:16,525 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 50 predicate places. [2022-12-12 14:22:16,525 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 97 transitions, 1100 flow [2022-12-12 14:22:16,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 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 14:22:16,526 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:22:16,526 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:22:16,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 14:22:16,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-12 14:22:16,731 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:22:16,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:22:16,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1429592115, now seen corresponding path program 2 times [2022-12-12 14:22:16,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:22:16,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565954193] [2022-12-12 14:22:16,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:16,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:22:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:16,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:22:16,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565954193] [2022-12-12 14:22:16,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565954193] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 14:22:16,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580349118] [2022-12-12 14:22:16,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 14:22:16,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:22:16,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:22:16,833 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 14:22:16,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 14:22:16,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 14:22:16,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 14:22:16,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 14:22:16,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 14:22:16,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:16,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 14:22:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:17,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580349118] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 14:22:17,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 14:22:17,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-12 14:22:17,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740767872] [2022-12-12 14:22:17,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 14:22:17,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 14:22:17,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:22:17,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 14:22:17,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-12-12 14:22:17,097 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 14:22:17,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 97 transitions, 1100 flow. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 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 14:22:17,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:22:17,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 14:22:17,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:22:17,862 INFO L130 PetriNetUnfolder]: 1929/3573 cut-off events. [2022-12-12 14:22:17,862 INFO L131 PetriNetUnfolder]: For 43803/43803 co-relation queries the response was YES. [2022-12-12 14:22:17,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20176 conditions, 3573 events. 1929/3573 cut-off events. For 43803/43803 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 24656 event pairs, 258 based on Foata normal form. 343/2072 useless extension candidates. Maximal degree in co-relation 20138. Up to 1229 conditions per place. [2022-12-12 14:22:17,891 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 86 selfloop transitions, 69 changer transitions 144/303 dead transitions. [2022-12-12 14:22:17,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 303 transitions, 3668 flow [2022-12-12 14:22:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 14:22:17,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 14:22:17,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 321 transitions. [2022-12-12 14:22:17,893 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6604938271604939 [2022-12-12 14:22:17,893 INFO L175 Difference]: Start difference. First operand has 82 places, 97 transitions, 1100 flow. Second operand 18 states and 321 transitions. [2022-12-12 14:22:17,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 303 transitions, 3668 flow [2022-12-12 14:22:18,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 303 transitions, 3488 flow, removed 70 selfloop flow, removed 5 redundant places. [2022-12-12 14:22:18,076 INFO L231 Difference]: Finished difference. Result has 104 places, 123 transitions, 1763 flow [2022-12-12 14:22:18,077 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1763, PETRI_PLACES=104, PETRI_TRANSITIONS=123} [2022-12-12 14:22:18,077 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 72 predicate places. [2022-12-12 14:22:18,078 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 123 transitions, 1763 flow [2022-12-12 14:22:18,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 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 14:22:18,078 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:22:18,078 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:22:18,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 14:22:18,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-12 14:22:18,284 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:22:18,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:22:18,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1968318328, now seen corresponding path program 3 times [2022-12-12 14:22:18,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:22:18,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854195135] [2022-12-12 14:22:18,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:18,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:22:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:18,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:22:18,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854195135] [2022-12-12 14:22:18,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854195135] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 14:22:18,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324555713] [2022-12-12 14:22:18,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 14:22:18,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:22:18,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:22:18,433 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 14:22:18,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 14:22:18,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 14:22:18,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 14:22:18,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 14:22:18,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 14:22:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:18,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 14:22:18,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:18,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324555713] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 14:22:18,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 14:22:18,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-12 14:22:18,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377916947] [2022-12-12 14:22:18,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 14:22:18,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 14:22:18,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:22:18,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 14:22:18,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-12-12 14:22:18,631 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 14:22:18,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 123 transitions, 1763 flow. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:22:18,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:22:18,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 14:22:18,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:22:19,562 INFO L130 PetriNetUnfolder]: 2466/4693 cut-off events. [2022-12-12 14:22:19,563 INFO L131 PetriNetUnfolder]: For 96616/96616 co-relation queries the response was YES. [2022-12-12 14:22:19,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33632 conditions, 4693 events. 2466/4693 cut-off events. For 96616/96616 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 34819 event pairs, 162 based on Foata normal form. 294/2600 useless extension candidates. Maximal degree in co-relation 33584. Up to 1675 conditions per place. [2022-12-12 14:22:19,601 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 122 selfloop transitions, 100 changer transitions 99/325 dead transitions. [2022-12-12 14:22:19,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 325 transitions, 5277 flow [2022-12-12 14:22:19,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 14:22:19,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 14:22:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 319 transitions. [2022-12-12 14:22:19,603 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6563786008230452 [2022-12-12 14:22:19,603 INFO L175 Difference]: Start difference. First operand has 104 places, 123 transitions, 1763 flow. Second operand 18 states and 319 transitions. [2022-12-12 14:22:19,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 325 transitions, 5277 flow [2022-12-12 14:22:19,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 325 transitions, 4741 flow, removed 258 selfloop flow, removed 4 redundant places. [2022-12-12 14:22:19,979 INFO L231 Difference]: Finished difference. Result has 125 places, 148 transitions, 2540 flow [2022-12-12 14:22:19,979 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2540, PETRI_PLACES=125, PETRI_TRANSITIONS=148} [2022-12-12 14:22:19,980 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 93 predicate places. [2022-12-12 14:22:19,980 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 148 transitions, 2540 flow [2022-12-12 14:22:19,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:22:19,980 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:22:19,981 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:22:19,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 14:22:20,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:22:20,186 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:22:20,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:22:20,186 INFO L85 PathProgramCache]: Analyzing trace with hash 237245672, now seen corresponding path program 1 times [2022-12-12 14:22:20,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:22:20,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883829837] [2022-12-12 14:22:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:20,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:22:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:20,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:22:20,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883829837] [2022-12-12 14:22:20,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883829837] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 14:22:20,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284296425] [2022-12-12 14:22:20,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:20,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:22:20,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:22:20,280 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 14:22:20,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 14:22:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:20,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 14:22:20,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 14:22:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:20,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 14:22:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:20,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284296425] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 14:22:20,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 14:22:20,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-12 14:22:20,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842086892] [2022-12-12 14:22:20,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 14:22:20,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 14:22:20,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:22:20,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 14:22:20,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-12-12 14:22:20,461 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 14:22:20,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 148 transitions, 2540 flow. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:22:20,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:22:20,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 14:22:20,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:22:21,874 INFO L130 PetriNetUnfolder]: 3018/5855 cut-off events. [2022-12-12 14:22:21,874 INFO L131 PetriNetUnfolder]: For 178662/178662 co-relation queries the response was YES. [2022-12-12 14:22:21,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48933 conditions, 5855 events. 3018/5855 cut-off events. For 178662/178662 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 46125 event pairs, 66 based on Foata normal form. 343/3241 useless extension candidates. Maximal degree in co-relation 48878. Up to 2153 conditions per place. [2022-12-12 14:22:21,912 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 66 selfloop transitions, 114 changer transitions 228/412 dead transitions. [2022-12-12 14:22:21,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 412 transitions, 8086 flow [2022-12-12 14:22:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-12 14:22:21,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-12 14:22:21,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 384 transitions. [2022-12-12 14:22:21,914 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2022-12-12 14:22:21,914 INFO L175 Difference]: Start difference. First operand has 125 places, 148 transitions, 2540 flow. Second operand 22 states and 384 transitions. [2022-12-12 14:22:21,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 412 transitions, 8086 flow [2022-12-12 14:22:22,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 412 transitions, 6746 flow, removed 634 selfloop flow, removed 9 redundant places. [2022-12-12 14:22:22,419 INFO L231 Difference]: Finished difference. Result has 148 places, 145 transitions, 2807 flow [2022-12-12 14:22:22,419 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2807, PETRI_PLACES=148, PETRI_TRANSITIONS=145} [2022-12-12 14:22:22,420 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 116 predicate places. [2022-12-12 14:22:22,420 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 145 transitions, 2807 flow [2022-12-12 14:22:22,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:22:22,420 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:22:22,421 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:22:22,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 14:22:22,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:22:22,623 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:22:22,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:22:22,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1548379643, now seen corresponding path program 1 times [2022-12-12 14:22:22,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:22:22,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142716889] [2022-12-12 14:22:22,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:22,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:22:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:22,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:22:22,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142716889] [2022-12-12 14:22:22,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142716889] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 14:22:22,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554431137] [2022-12-12 14:22:22,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:22,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:22:22,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:22:22,780 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 14:22:22,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 14:22:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:22,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-12 14:22:22,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 14:22:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:22,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 14:22:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:23,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554431137] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 14:22:23,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 14:22:23,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2022-12-12 14:22:23,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841634244] [2022-12-12 14:22:23,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 14:22:23,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 14:22:23,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:22:23,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 14:22:23,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-12-12 14:22:23,070 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 14:22:23,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 145 transitions, 2807 flow. Second operand has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:22:23,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:22:23,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 14:22:23,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:22:25,262 INFO L130 PetriNetUnfolder]: 4300/8511 cut-off events. [2022-12-12 14:22:25,262 INFO L131 PetriNetUnfolder]: For 332448/332448 co-relation queries the response was YES. [2022-12-12 14:22:25,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83184 conditions, 8511 events. 4300/8511 cut-off events. For 332448/332448 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 69500 event pairs, 135 based on Foata normal form. 441/4853 useless extension candidates. Maximal degree in co-relation 83118. Up to 3030 conditions per place. [2022-12-12 14:22:25,324 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 80 selfloop transitions, 133 changer transitions 360/577 dead transitions. [2022-12-12 14:22:25,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 577 transitions, 13293 flow [2022-12-12 14:22:25,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 14:22:25,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 14:22:25,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 619 transitions. [2022-12-12 14:22:25,327 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6368312757201646 [2022-12-12 14:22:25,327 INFO L175 Difference]: Start difference. First operand has 148 places, 145 transitions, 2807 flow. Second operand 36 states and 619 transitions. [2022-12-12 14:22:25,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 577 transitions, 13293 flow [2022-12-12 14:22:26,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 577 transitions, 11310 flow, removed 951 selfloop flow, removed 13 redundant places. [2022-12-12 14:22:26,074 INFO L231 Difference]: Finished difference. Result has 188 places, 164 transitions, 3622 flow [2022-12-12 14:22:26,074 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3622, PETRI_PLACES=188, PETRI_TRANSITIONS=164} [2022-12-12 14:22:26,075 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 156 predicate places. [2022-12-12 14:22:26,075 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 164 transitions, 3622 flow [2022-12-12 14:22:26,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:22:26,075 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:22:26,076 INFO L214 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:22:26,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 14:22:26,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-12 14:22:26,276 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:22:26,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:22:26,278 INFO L85 PathProgramCache]: Analyzing trace with hash -153651968, now seen corresponding path program 2 times [2022-12-12 14:22:26,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:22:26,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685888064] [2022-12-12 14:22:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:26,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:22:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:26,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:22:26,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685888064] [2022-12-12 14:22:26,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685888064] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 14:22:26,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561836958] [2022-12-12 14:22:26,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 14:22:26,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:22:26,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:22:26,648 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 14:22:26,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 14:22:26,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 14:22:26,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 14:22:26,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 14:22:26,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 14:22:26,786 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:26,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 14:22:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:27,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561836958] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 14:22:27,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 14:22:27,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 24 [2022-12-12 14:22:27,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898151335] [2022-12-12 14:22:27,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 14:22:27,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 14:22:27,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:22:27,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 14:22:27,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2022-12-12 14:22:27,127 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 14:22:27,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 164 transitions, 3622 flow. Second operand has 26 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 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 14:22:27,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:22:27,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 14:22:27,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:22:28,984 INFO L130 PetriNetUnfolder]: 4119/8531 cut-off events. [2022-12-12 14:22:28,985 INFO L131 PetriNetUnfolder]: For 451701/451701 co-relation queries the response was YES. [2022-12-12 14:22:29,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84694 conditions, 8531 events. 4119/8531 cut-off events. For 451701/451701 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 69781 event pairs, 876 based on Foata normal form. 392/4866 useless extension candidates. Maximal degree in co-relation 84614. Up to 3087 conditions per place. [2022-12-12 14:22:29,046 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 133 selfloop transitions, 108 changer transitions 237/482 dead transitions. [2022-12-12 14:22:29,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 482 transitions, 12333 flow [2022-12-12 14:22:29,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-12 14:22:29,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-12 14:22:29,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 452 transitions. [2022-12-12 14:22:29,048 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5772669220945083 [2022-12-12 14:22:29,048 INFO L175 Difference]: Start difference. First operand has 188 places, 164 transitions, 3622 flow. Second operand 29 states and 452 transitions. [2022-12-12 14:22:29,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 482 transitions, 12333 flow [2022-12-12 14:22:31,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 482 transitions, 9600 flow, removed 1325 selfloop flow, removed 18 redundant places. [2022-12-12 14:22:31,057 INFO L231 Difference]: Finished difference. Result has 208 places, 208 transitions, 3947 flow [2022-12-12 14:22:31,058 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2381, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3947, PETRI_PLACES=208, PETRI_TRANSITIONS=208} [2022-12-12 14:22:31,058 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 176 predicate places. [2022-12-12 14:22:31,058 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 208 transitions, 3947 flow [2022-12-12 14:22:31,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 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 14:22:31,058 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:22:31,058 INFO L214 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:22:31,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 14:22:31,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:22:31,259 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:22:31,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:22:31,260 INFO L85 PathProgramCache]: Analyzing trace with hash 197340940, now seen corresponding path program 1 times [2022-12-12 14:22:31,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:22:31,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792539974] [2022-12-12 14:22:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:31,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:22:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:31,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:22:31,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792539974] [2022-12-12 14:22:31,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792539974] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 14:22:31,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597101202] [2022-12-12 14:22:31,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:31,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:22:31,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:22:31,492 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 14:22:31,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 14:22:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:31,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 14:22:31,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 14:22:31,615 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:31,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 14:22:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:31,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597101202] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 14:22:31,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 14:22:31,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 28 [2022-12-12 14:22:31,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667634530] [2022-12-12 14:22:31,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 14:22:31,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-12 14:22:31,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:22:31,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-12 14:22:31,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2022-12-12 14:22:31,838 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 14:22:31,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 208 transitions, 3947 flow. Second operand has 30 states, 30 states have (on average 5.433333333333334) internal successors, (163), 30 states have internal predecessors, (163), 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 14:22:31,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:22:31,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 14:22:31,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:22:34,680 INFO L130 PetriNetUnfolder]: 5757/12063 cut-off events. [2022-12-12 14:22:34,680 INFO L131 PetriNetUnfolder]: For 723863/723863 co-relation queries the response was YES. [2022-12-12 14:22:34,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129629 conditions, 12063 events. 5757/12063 cut-off events. For 723863/723863 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 101590 event pairs, 132 based on Foata normal form. 392/6559 useless extension candidates. Maximal degree in co-relation 129548. Up to 4052 conditions per place. [2022-12-12 14:22:34,774 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 184 selfloop transitions, 226 changer transitions 216/630 dead transitions. [2022-12-12 14:22:34,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 630 transitions, 15452 flow [2022-12-12 14:22:34,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 14:22:34,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 14:22:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 603 transitions. [2022-12-12 14:22:34,776 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2022-12-12 14:22:34,776 INFO L175 Difference]: Start difference. First operand has 208 places, 208 transitions, 3947 flow. Second operand 38 states and 603 transitions. [2022-12-12 14:22:34,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 630 transitions, 15452 flow [2022-12-12 14:22:37,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 630 transitions, 14382 flow, removed 502 selfloop flow, removed 11 redundant places. [2022-12-12 14:22:37,611 INFO L231 Difference]: Finished difference. Result has 249 places, 280 transitions, 6837 flow [2022-12-12 14:22:37,611 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3267, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6837, PETRI_PLACES=249, PETRI_TRANSITIONS=280} [2022-12-12 14:22:37,612 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 217 predicate places. [2022-12-12 14:22:37,612 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 280 transitions, 6837 flow [2022-12-12 14:22:37,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.433333333333334) internal successors, (163), 30 states have internal predecessors, (163), 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 14:22:37,612 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:22:37,612 INFO L214 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:22:37,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 14:22:37,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:22:37,813 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:22:37,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:22:37,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1158957664, now seen corresponding path program 1 times [2022-12-12 14:22:37,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:22:37,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699752966] [2022-12-12 14:22:37,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:37,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:22:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:38,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:22:38,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699752966] [2022-12-12 14:22:38,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699752966] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 14:22:38,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575161803] [2022-12-12 14:22:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:38,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:22:38,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:22:38,070 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 14:22:38,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 14:22:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:38,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 14:22:38,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 14:22:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:38,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 14:22:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:38,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575161803] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 14:22:38,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 14:22:38,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 24 [2022-12-12 14:22:38,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838240659] [2022-12-12 14:22:38,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 14:22:38,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 14:22:38,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:22:38,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 14:22:38,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-12-12 14:22:38,392 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 14:22:38,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 280 transitions, 6837 flow. Second operand has 26 states, 26 states have (on average 5.5) internal successors, (143), 26 states have internal predecessors, (143), 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 14:22:38,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:22:38,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 14:22:38,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:22:41,977 INFO L130 PetriNetUnfolder]: 6057/12569 cut-off events. [2022-12-12 14:22:41,977 INFO L131 PetriNetUnfolder]: For 1001929/1001929 co-relation queries the response was YES. [2022-12-12 14:22:42,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151662 conditions, 12569 events. 6057/12569 cut-off events. For 1001929/1001929 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 106194 event pairs, 66 based on Foata normal form. 392/6918 useless extension candidates. Maximal degree in co-relation 151565. Up to 4135 conditions per place. [2022-12-12 14:22:42,076 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 90 selfloop transitions, 234 changer transitions 405/733 dead transitions. [2022-12-12 14:22:42,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 733 transitions, 21231 flow [2022-12-12 14:22:42,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-12 14:22:42,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-12 14:22:42,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 721 transitions. [2022-12-12 14:22:42,083 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5934156378600823 [2022-12-12 14:22:42,083 INFO L175 Difference]: Start difference. First operand has 249 places, 280 transitions, 6837 flow. Second operand 45 states and 721 transitions. [2022-12-12 14:22:42,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 733 transitions, 21231 flow [2022-12-12 14:22:47,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 733 transitions, 18975 flow, removed 1039 selfloop flow, removed 17 redundant places. [2022-12-12 14:22:47,354 INFO L231 Difference]: Finished difference. Result has 290 places, 266 transitions, 6506 flow [2022-12-12 14:22:47,354 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4581, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=6506, PETRI_PLACES=290, PETRI_TRANSITIONS=266} [2022-12-12 14:22:47,355 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 258 predicate places. [2022-12-12 14:22:47,355 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 266 transitions, 6506 flow [2022-12-12 14:22:47,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.5) internal successors, (143), 26 states have internal predecessors, (143), 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 14:22:47,355 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:22:47,355 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:22:47,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 14:22:47,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-12 14:22:47,560 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:22:47,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:22:47,561 INFO L85 PathProgramCache]: Analyzing trace with hash 579966682, now seen corresponding path program 4 times [2022-12-12 14:22:47,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:22:47,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119768404] [2022-12-12 14:22:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:22:47,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:22:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:22:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:47,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:22:47,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119768404] [2022-12-12 14:22:47,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119768404] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 14:22:47,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66240656] [2022-12-12 14:22:47,916 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 14:22:47,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:22:47,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:22:47,920 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 14:22:47,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 14:22:47,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 14:22:47,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 14:22:47,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-12 14:22:47,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 14:22:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:48,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 14:22:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:22:48,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66240656] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 14:22:48,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 14:22:48,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 45 [2022-12-12 14:22:48,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129545699] [2022-12-12 14:22:48,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 14:22:48,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-12 14:22:48,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:22:48,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-12 14:22:48,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1677, Unknown=0, NotChecked=0, Total=2162 [2022-12-12 14:22:48,382 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 14:22:48,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 266 transitions, 6506 flow. Second operand has 47 states, 47 states have (on average 5.23404255319149) internal successors, (246), 47 states have internal predecessors, (246), 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 14:22:48,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:22:48,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 14:22:48,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:22:53,016 INFO L130 PetriNetUnfolder]: 6756/14367 cut-off events. [2022-12-12 14:22:53,016 INFO L131 PetriNetUnfolder]: For 1277547/1277547 co-relation queries the response was YES. [2022-12-12 14:22:53,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196135 conditions, 14367 events. 6756/14367 cut-off events. For 1277547/1277547 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 126476 event pairs, 282 based on Foata normal form. 147/7663 useless extension candidates. Maximal degree in co-relation 196024. Up to 4662 conditions per place. [2022-12-12 14:22:53,244 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 123 selfloop transitions, 244 changer transitions 378/749 dead transitions. [2022-12-12 14:22:53,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 749 transitions, 22925 flow [2022-12-12 14:22:53,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-12 14:22:53,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-12 14:22:53,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 727 transitions. [2022-12-12 14:22:53,246 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5609567901234568 [2022-12-12 14:22:53,246 INFO L175 Difference]: Start difference. First operand has 290 places, 266 transitions, 6506 flow. Second operand 48 states and 727 transitions. [2022-12-12 14:22:53,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 749 transitions, 22925 flow [2022-12-12 14:23:00,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 749 transitions, 20038 flow, removed 1270 selfloop flow, removed 35 redundant places. [2022-12-12 14:23:00,189 INFO L231 Difference]: Finished difference. Result has 310 places, 305 transitions, 7152 flow [2022-12-12 14:23:00,190 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4687, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=7152, PETRI_PLACES=310, PETRI_TRANSITIONS=305} [2022-12-12 14:23:00,190 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 278 predicate places. [2022-12-12 14:23:00,190 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 305 transitions, 7152 flow [2022-12-12 14:23:00,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.23404255319149) internal successors, (246), 47 states have internal predecessors, (246), 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 14:23:00,191 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:23:00,191 INFO L214 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:23:00,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 14:23:00,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-12 14:23:00,396 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 14:23:00,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:23:00,397 INFO L85 PathProgramCache]: Analyzing trace with hash -289994554, now seen corresponding path program 1 times [2022-12-12 14:23:00,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:23:00,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700589148] [2022-12-12 14:23:00,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:23:00,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:23:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:23:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 90 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:23:00,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:23:00,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700589148] [2022-12-12 14:23:00,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700589148] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 14:23:00,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130967866] [2022-12-12 14:23:00,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:23:00,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 14:23:00,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:23:00,556 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 14:23:00,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 14:23:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:23:00,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-12 14:23:00,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 14:23:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:23:00,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 14:23:00,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130967866] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:23:00,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 14:23:00,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2022-12-12 14:23:00,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509093842] [2022-12-12 14:23:00,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:23:00,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 14:23:00,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:23:00,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 14:23:00,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-12-12 14:23:00,671 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 27 [2022-12-12 14:23:00,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 305 transitions, 7152 flow. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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 14:23:00,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:23:00,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 27 [2022-12-12 14:23:00,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:23:10,663 INFO L130 PetriNetUnfolder]: 28360/49968 cut-off events. [2022-12-12 14:23:10,663 INFO L131 PetriNetUnfolder]: For 3965874/3965874 co-relation queries the response was YES. [2022-12-12 14:23:11,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550408 conditions, 49968 events. 28360/49968 cut-off events. For 3965874/3965874 co-relation queries the response was YES. Maximal size of possible extension queue 1981. Compared 460317 event pairs, 2816 based on Foata normal form. 737/24568 useless extension candidates. Maximal degree in co-relation 550293. Up to 17940 conditions per place. [2022-12-12 14:23:11,658 INFO L137 encePairwiseOnDemand]: 18/27 looper letters, 0 selfloop transitions, 0 changer transitions 1395/1395 dead transitions. [2022-12-12 14:23:11,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 1395 transitions, 29676 flow [2022-12-12 14:23:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 14:23:11,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 14:23:11,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 226 transitions. [2022-12-12 14:23:11,660 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6438746438746439 [2022-12-12 14:23:11,660 INFO L175 Difference]: Start difference. First operand has 310 places, 305 transitions, 7152 flow. Second operand 13 states and 226 transitions. [2022-12-12 14:23:11,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 1395 transitions, 29676 flow [2022-12-12 14:23:39,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 1395 transitions, 26461 flow, removed 386 selfloop flow, removed 41 redundant places. [2022-12-12 14:23:39,977 INFO L231 Difference]: Finished difference. Result has 280 places, 0 transitions, 0 flow [2022-12-12 14:23:39,977 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4409, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=280, PETRI_TRANSITIONS=0} [2022-12-12 14:23:39,978 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 248 predicate places. [2022-12-12 14:23:39,978 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 0 transitions, 0 flow [2022-12-12 14:23:39,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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 14:23:39,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 14:23:39,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 14:23:39,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 14:23:39,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-12 14:23:40,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-12 14:23:40,186 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 14:23:40,189 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 14:23:40,189 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 14:23:40,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 02:23:40 BasicIcfg [2022-12-12 14:23:40,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 14:23:40,193 INFO L158 Benchmark]: Toolchain (without parser) took 90624.06ms. Allocated memory was 179.3MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 154.5MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2022-12-12 14:23:40,193 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 179.3MB. Free memory is still 156.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 14:23:40,193 INFO L158 Benchmark]: CACSL2BoogieTranslator took 452.68ms. Allocated memory is still 179.3MB. Free memory was 154.5MB in the beginning and 134.2MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-12 14:23:40,193 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.29ms. Allocated memory is still 179.3MB. Free memory was 134.2MB in the beginning and 132.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 14:23:40,193 INFO L158 Benchmark]: Boogie Preprocessor took 39.36ms. Allocated memory is still 179.3MB. Free memory was 132.5MB in the beginning and 131.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 14:23:40,194 INFO L158 Benchmark]: RCFGBuilder took 348.09ms. Allocated memory is still 179.3MB. Free memory was 131.1MB in the beginning and 118.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 14:23:40,194 INFO L158 Benchmark]: TraceAbstraction took 89741.11ms. Allocated memory was 179.3MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 117.4MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2022-12-12 14:23:40,195 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 179.3MB. Free memory is still 156.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 452.68ms. Allocated memory is still 179.3MB. Free memory was 154.5MB in the beginning and 134.2MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.29ms. Allocated memory is still 179.3MB. Free memory was 134.2MB in the beginning and 132.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.36ms. Allocated memory is still 179.3MB. Free memory was 132.5MB in the beginning and 131.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 348.09ms. Allocated memory is still 179.3MB. Free memory was 131.1MB in the beginning and 118.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 89741.11ms. Allocated memory was 179.3MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 117.4MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 66 PlacesBefore, 32 PlacesAfterwards, 64 TransitionsBefore, 27 TransitionsAfterwards, 1078 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 30 ConcurrentYvCompositions, 3 ChoiceCompositions, 51 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1048, independent: 1025, independent conditional: 1025, independent unconditional: 0, dependent: 23, dependent conditional: 23, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1048, independent: 1025, independent conditional: 0, independent unconditional: 1025, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1048, independent: 1025, independent conditional: 0, independent unconditional: 1025, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1048, independent: 1025, independent conditional: 0, independent unconditional: 1025, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 824, independent: 814, independent conditional: 0, independent unconditional: 814, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 824, independent: 814, independent conditional: 0, independent unconditional: 814, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 31, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1048, independent: 211, independent conditional: 0, independent unconditional: 211, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 824, unknown conditional: 0, unknown unconditional: 824] , Statistics on independence cache: Total cache size (in pairs): 1517, Positive cache size: 1507, Positive conditional cache size: 0, Positive unconditional cache size: 1507, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 722]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 89.6s, OverallIterations: 15, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 79.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7641 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7641 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1655 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6691 IncrementalHoareTripleChecker+Invalid, 8346 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1655 mSolverCounterUnsat, 0 mSDtfsCounter, 6691 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 693 GetRequests, 209 SyntacticMatches, 30 SemanticMatches, 454 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7076 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7152occurred in iteration=14, InterpolantAutomatonStates: 312, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 412 NumberOfCodeBlocks, 412 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 534 ConstructedInterpolants, 0 QuantifiedInterpolants, 2152 SizeOfPredicates, 84 NumberOfNonLiveVariables, 1615 ConjunctsInSsa, 150 ConjunctsInUnsatCore, 34 InterpolantComputations, 6 PerfectInterpolantSequences, 190/902 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 14:23:40,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...