/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 20:34:22,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 20:34:22,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 20:34:22,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 20:34:22,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 20:34:22,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 20:34:22,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 20:34:22,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 20:34:22,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 20:34:22,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 20:34:22,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 20:34:22,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 20:34:22,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 20:34:22,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 20:34:22,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 20:34:22,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 20:34:22,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 20:34:22,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 20:34:22,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 20:34:22,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 20:34:22,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 20:34:22,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 20:34:22,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 20:34:22,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 20:34:22,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 20:34:22,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 20:34:22,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 20:34:22,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 20:34:22,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 20:34:22,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 20:34:22,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 20:34:22,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 20:34:22,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 20:34:22,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 20:34:22,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 20:34:22,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 20:34:22,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 20:34:22,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 20:34:22,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 20:34:22,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 20:34:22,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 20:34:22,115 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 20:34:22,140 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 20:34:22,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 20:34:22,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 20:34:22,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 20:34:22,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 20:34:22,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 20:34:22,141 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 20:34:22,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 20:34:22,142 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 20:34:22,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 20:34:22,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 20:34:22,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 20:34:22,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 20:34:22,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 20:34:22,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 20:34:22,142 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 20:34:22,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 20:34:22,143 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 20:34:22,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 20:34:22,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 20:34:22,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 20:34:22,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 20:34:22,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 20:34:22,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 20:34:22,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 20:34:22,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 20:34:22,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 20:34:22,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 20:34:22,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 20:34:22,144 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 20:34:22,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 20:34:22,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 20:34:22,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 20:34:22,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 20:34:22,444 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 20:34:22,445 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 20:34:22,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-12-12 20:34:23,420 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 20:34:23,561 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 20:34:23,562 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-12-12 20:34:23,566 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ec1fdc94/e7581462a3a241a1b1227beae7fea44e/FLAGb365bd3dc [2022-12-12 20:34:23,576 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ec1fdc94/e7581462a3a241a1b1227beae7fea44e [2022-12-12 20:34:23,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 20:34:23,579 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 20:34:23,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 20:34:23,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 20:34:23,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 20:34:23,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 08:34:23" (1/1) ... [2022-12-12 20:34:23,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57622c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:34:23, skipping insertion in model container [2022-12-12 20:34:23,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 08:34:23" (1/1) ... [2022-12-12 20:34:23,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 20:34:23,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 20:34:23,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:34:23,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:34:23,706 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:34:23,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:34:23,713 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c[2037,2050] [2022-12-12 20:34:23,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 20:34:23,720 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 20:34:23,731 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:34:23,732 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:34:23,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:34:23,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:34:23,738 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c[2037,2050] [2022-12-12 20:34:23,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 20:34:23,747 INFO L208 MainTranslator]: Completed translation [2022-12-12 20:34:23,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:34:23 WrapperNode [2022-12-12 20:34:23,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 20:34:23,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 20:34:23,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 20:34:23,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 20:34:23,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:34:23" (1/1) ... [2022-12-12 20:34:23,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:34:23" (1/1) ... [2022-12-12 20:34:23,768 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-12-12 20:34:23,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 20:34:23,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 20:34:23,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 20:34:23,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 20:34:23,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:34:23" (1/1) ... [2022-12-12 20:34:23,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:34:23" (1/1) ... [2022-12-12 20:34:23,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:34:23" (1/1) ... [2022-12-12 20:34:23,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:34:23" (1/1) ... [2022-12-12 20:34:23,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:34:23" (1/1) ... [2022-12-12 20:34:23,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:34:23" (1/1) ... [2022-12-12 20:34:23,781 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:34:23" (1/1) ... [2022-12-12 20:34:23,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:34:23" (1/1) ... [2022-12-12 20:34:23,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 20:34:23,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 20:34:23,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 20:34:23,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 20:34:23,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:34:23" (1/1) ... [2022-12-12 20:34:23,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 20:34:23,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:23,813 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 20:34:23,845 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 20:34:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 20:34:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 20:34:23,868 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 20:34:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 20:34:23,868 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 20:34:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 20:34:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 20:34:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 20:34:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 20:34:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 20:34:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 20:34:23,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 20:34:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 20:34:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 20:34:23,870 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 20:34:23,945 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 20:34:23,946 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 20:34:24,157 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 20:34:24,183 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 20:34:24,183 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-12 20:34:24,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 08:34:24 BoogieIcfgContainer [2022-12-12 20:34:24,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 20:34:24,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 20:34:24,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 20:34:24,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 20:34:24,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 08:34:23" (1/3) ... [2022-12-12 20:34:24,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2d66dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 08:34:24, skipping insertion in model container [2022-12-12 20:34:24,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:34:23" (2/3) ... [2022-12-12 20:34:24,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2d66dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 08:34:24, skipping insertion in model container [2022-12-12 20:34:24,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 08:34:24" (3/3) ... [2022-12-12 20:34:24,189 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2022-12-12 20:34:24,202 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 20:34:24,202 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 20:34:24,202 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 20:34:24,267 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 20:34:24,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 75 transitions, 166 flow [2022-12-12 20:34:24,340 INFO L130 PetriNetUnfolder]: 6/73 cut-off events. [2022-12-12 20:34:24,340 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 20:34:24,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 73 events. 6/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2022-12-12 20:34:24,344 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 75 transitions, 166 flow [2022-12-12 20:34:24,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 65 transitions, 142 flow [2022-12-12 20:34:24,349 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 20:34:24,364 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 65 transitions, 142 flow [2022-12-12 20:34:24,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 65 transitions, 142 flow [2022-12-12 20:34:24,399 INFO L130 PetriNetUnfolder]: 6/65 cut-off events. [2022-12-12 20:34:24,399 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 20:34:24,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 65 events. 6/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2022-12-12 20:34:24,401 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 65 transitions, 142 flow [2022-12-12 20:34:24,401 INFO L226 LiptonReduction]: Number of co-enabled transitions 404 [2022-12-12 20:34:25,675 INFO L241 LiptonReduction]: Total number of compositions: 50 [2022-12-12 20:34:25,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 20:34:25,691 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;@6beae023, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 20:34:25,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 20:34:25,694 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2022-12-12 20:34:25,695 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 20:34:25,695 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:25,695 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:25,695 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 20:34:25,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:25,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1047005972, now seen corresponding path program 1 times [2022-12-12 20:34:25,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:25,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547146397] [2022-12-12 20:34:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:25,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:25,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:25,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547146397] [2022-12-12 20:34:25,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547146397] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:34:25,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:34:25,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 20:34:25,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133277381] [2022-12-12 20:34:25,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:34:25,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 20:34:25,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:26,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 20:34:26,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 20:34:26,003 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 15 [2022-12-12 20:34:26,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 20:34:26,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:26,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 15 [2022-12-12 20:34:26,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:26,049 INFO L130 PetriNetUnfolder]: 59/100 cut-off events. [2022-12-12 20:34:26,049 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-12 20:34:26,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 100 events. 59/100 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 250 event pairs, 23 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 165. Up to 78 conditions per place. [2022-12-12 20:34:26,051 INFO L137 encePairwiseOnDemand]: 11/15 looper letters, 17 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2022-12-12 20:34:26,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 21 transitions, 97 flow [2022-12-12 20:34:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:34:26,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:34:26,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2022-12-12 20:34:26,059 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2022-12-12 20:34:26,061 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2022-12-12 20:34:26,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 21 transitions, 97 flow [2022-12-12 20:34:26,062 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 21 transitions, 97 flow [2022-12-12 20:34:26,063 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 97 flow [2022-12-12 20:34:26,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 20:34:26,063 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:26,063 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:26,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 20:34:26,064 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 20:34:26,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:26,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1521658877, now seen corresponding path program 1 times [2022-12-12 20:34:26,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:26,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667157292] [2022-12-12 20:34:26,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:26,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:26,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:26,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667157292] [2022-12-12 20:34:26,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667157292] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:34:26,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:34:26,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 20:34:26,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640866653] [2022-12-12 20:34:26,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:34:26,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:34:26,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:26,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:34:26,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 20:34:26,124 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:34:26,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 20:34:26,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:26,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:34:26,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:26,201 INFO L130 PetriNetUnfolder]: 86/161 cut-off events. [2022-12-12 20:34:26,202 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-12-12 20:34:26,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 161 events. 86/161 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 494 event pairs, 24 based on Foata normal form. 4/131 useless extension candidates. Maximal degree in co-relation 363. Up to 117 conditions per place. [2022-12-12 20:34:26,203 INFO L137 encePairwiseOnDemand]: 10/15 looper letters, 39 selfloop transitions, 5 changer transitions 6/50 dead transitions. [2022-12-12 20:34:26,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 50 transitions, 331 flow [2022-12-12 20:34:26,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:34:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:34:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2022-12-12 20:34:26,204 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2022-12-12 20:34:26,205 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 7 predicate places. [2022-12-12 20:34:26,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 50 transitions, 331 flow [2022-12-12 20:34:26,206 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 44 transitions, 289 flow [2022-12-12 20:34:26,206 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 44 transitions, 289 flow [2022-12-12 20:34:26,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 20:34:26,206 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:26,206 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:26,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 20:34:26,206 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 20:34:26,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:26,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1689108221, now seen corresponding path program 2 times [2022-12-12 20:34:26,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:26,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23939573] [2022-12-12 20:34:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:26,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:26,298 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 20:34:26,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:26,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23939573] [2022-12-12 20:34:26,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23939573] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:26,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670308954] [2022-12-12 20:34:26,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:34:26,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:26,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:26,308 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 20:34:26,369 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 20:34:26,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-12 20:34:26,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:34:26,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 20:34:26,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:26,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:34:26,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 20:34:26,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670308954] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:34:26,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 20:34:26,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-12 20:34:26,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746674180] [2022-12-12 20:34:26,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:34:26,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 20:34:26,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:26,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 20:34:26,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-12 20:34:26,429 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 15 [2022-12-12 20:34:26,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 44 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 20:34:26,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:26,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 15 [2022-12-12 20:34:26,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:26,456 INFO L130 PetriNetUnfolder]: 65/116 cut-off events. [2022-12-12 20:34:26,456 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-12-12 20:34:26,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 116 events. 65/116 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 281 event pairs, 24 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 374. Up to 93 conditions per place. [2022-12-12 20:34:26,457 INFO L137 encePairwiseOnDemand]: 11/15 looper letters, 25 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2022-12-12 20:34:26,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 260 flow [2022-12-12 20:34:26,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:34:26,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:34:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2022-12-12 20:34:26,458 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2022-12-12 20:34:26,459 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 8 predicate places. [2022-12-12 20:34:26,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 31 transitions, 260 flow [2022-12-12 20:34:26,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 31 transitions, 260 flow [2022-12-12 20:34:26,460 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 31 transitions, 260 flow [2022-12-12 20:34:26,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 20:34:26,460 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:26,460 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:26,484 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 20:34:26,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:26,673 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 20:34:26,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:26,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1037387405, now seen corresponding path program 1 times [2022-12-12 20:34:26,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:26,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571204354] [2022-12-12 20:34:26,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:26,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:34:26,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:26,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571204354] [2022-12-12 20:34:26,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571204354] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:26,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493456806] [2022-12-12 20:34:26,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:26,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:26,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:26,777 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 20:34:26,779 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 20:34:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:26,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 20:34:26,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:34:26,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:26,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493456806] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:26,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 20:34:26,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2, 2] total 4 [2022-12-12 20:34:26,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105568440] [2022-12-12 20:34:26,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:34:26,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:34:26,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:26,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:34:26,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-12 20:34:26,971 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 15 [2022-12-12 20:34:26,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 31 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 20:34:26,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:26,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 15 [2022-12-12 20:34:26,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:27,020 INFO L130 PetriNetUnfolder]: 117/211 cut-off events. [2022-12-12 20:34:27,021 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-12-12 20:34:27,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1037 conditions, 211 events. 117/211 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 691 event pairs, 6 based on Foata normal form. 1/166 useless extension candidates. Maximal degree in co-relation 862. Up to 188 conditions per place. [2022-12-12 20:34:27,022 INFO L137 encePairwiseOnDemand]: 11/15 looper letters, 42 selfloop transitions, 8 changer transitions 7/60 dead transitions. [2022-12-12 20:34:27,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 60 transitions, 627 flow [2022-12-12 20:34:27,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:34:27,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:34:27,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 43 transitions. [2022-12-12 20:34:27,023 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667 [2022-12-12 20:34:27,024 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 11 predicate places. [2022-12-12 20:34:27,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 60 transitions, 627 flow [2022-12-12 20:34:27,025 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 53 transitions, 548 flow [2022-12-12 20:34:27,025 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 53 transitions, 548 flow [2022-12-12 20:34:27,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 20:34:27,025 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:27,025 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:27,032 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 20:34:27,229 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,SelfDestructingSolverStorable3 [2022-12-12 20:34:27,230 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 20:34:27,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:27,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1846311817, now seen corresponding path program 2 times [2022-12-12 20:34:27,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:27,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916219124] [2022-12-12 20:34:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:27,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:34:27,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:27,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916219124] [2022-12-12 20:34:27,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916219124] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:27,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060135667] [2022-12-12 20:34:27,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:34:27,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:27,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:27,312 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 20:34:27,366 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 20:34:27,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:34:27,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:34:27,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 20:34:27,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:27,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:34:27,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:34:27,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060135667] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:27,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:27,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-12-12 20:34:27,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468194029] [2022-12-12 20:34:27,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:27,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 20:34:27,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:27,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 20:34:27,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-12 20:34:27,500 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 15 [2022-12-12 20:34:27,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 53 transitions, 548 flow. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 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 20:34:27,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:27,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 15 [2022-12-12 20:34:27,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:27,589 INFO L130 PetriNetUnfolder]: 126/235 cut-off events. [2022-12-12 20:34:27,589 INFO L131 PetriNetUnfolder]: For 163/163 co-relation queries the response was YES. [2022-12-12 20:34:27,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1388 conditions, 235 events. 126/235 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 779 event pairs, 8 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 1190. Up to 217 conditions per place. [2022-12-12 20:34:27,593 INFO L137 encePairwiseOnDemand]: 10/15 looper letters, 65 selfloop transitions, 10 changer transitions 3/79 dead transitions. [2022-12-12 20:34:27,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 79 transitions, 969 flow [2022-12-12 20:34:27,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:34:27,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:34:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2022-12-12 20:34:27,595 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2022-12-12 20:34:27,597 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 15 predicate places. [2022-12-12 20:34:27,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 79 transitions, 969 flow [2022-12-12 20:34:27,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 76 transitions, 930 flow [2022-12-12 20:34:27,599 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 76 transitions, 930 flow [2022-12-12 20:34:27,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 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 20:34:27,599 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:27,600 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:27,604 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 20:34:27,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:27,805 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 20:34:27,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:27,807 INFO L85 PathProgramCache]: Analyzing trace with hash -194936713, now seen corresponding path program 3 times [2022-12-12 20:34:27,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:27,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403742722] [2022-12-12 20:34:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:27,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:27,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:27,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:27,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403742722] [2022-12-12 20:34:27,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403742722] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:27,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577606530] [2022-12-12 20:34:27,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 20:34:27,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:27,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:27,929 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 20:34:27,948 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 20:34:27,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 20:34:27,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:34:27,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 20:34:27,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:28,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:28,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577606530] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:28,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:28,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-12 20:34:28,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796414035] [2022-12-12 20:34:28,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:28,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-12 20:34:28,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:28,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-12 20:34:28,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-12-12 20:34:28,172 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:34:28,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 76 transitions, 930 flow. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:34:28,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:28,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:34:28,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:28,479 INFO L130 PetriNetUnfolder]: 186/348 cut-off events. [2022-12-12 20:34:28,479 INFO L131 PetriNetUnfolder]: For 140/140 co-relation queries the response was YES. [2022-12-12 20:34:28,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2423 conditions, 348 events. 186/348 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1325 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 2164. Up to 330 conditions per place. [2022-12-12 20:34:28,481 INFO L137 encePairwiseOnDemand]: 8/15 looper letters, 88 selfloop transitions, 32 changer transitions 3/123 dead transitions. [2022-12-12 20:34:28,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 123 transitions, 1754 flow [2022-12-12 20:34:28,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 20:34:28,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 20:34:28,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 90 transitions. [2022-12-12 20:34:28,483 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.375 [2022-12-12 20:34:28,483 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 30 predicate places. [2022-12-12 20:34:28,483 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 123 transitions, 1754 flow [2022-12-12 20:34:28,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 120 transitions, 1709 flow [2022-12-12 20:34:28,486 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 120 transitions, 1709 flow [2022-12-12 20:34:28,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:34:28,486 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:28,486 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:28,500 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 20:34:28,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:28,693 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 20:34:28,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:28,693 INFO L85 PathProgramCache]: Analyzing trace with hash 775873490, now seen corresponding path program 4 times [2022-12-12 20:34:28,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:28,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978858784] [2022-12-12 20:34:28,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:28,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:28,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:28,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:28,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978858784] [2022-12-12 20:34:28,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978858784] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:28,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010960790] [2022-12-12 20:34:28,793 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 20:34:28,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:28,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:28,794 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 20:34:28,797 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 20:34:28,841 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 20:34:28,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:34:28,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-12 20:34:28,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:28,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:29,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010960790] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:29,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:29,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 5] total 7 [2022-12-12 20:34:29,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076529283] [2022-12-12 20:34:29,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:29,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 20:34:29,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:29,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 20:34:29,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-12 20:34:29,011 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 15 [2022-12-12 20:34:29,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 120 transitions, 1709 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 20:34:29,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:29,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 15 [2022-12-12 20:34:29,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:29,134 INFO L130 PetriNetUnfolder]: 284/515 cut-off events. [2022-12-12 20:34:29,134 INFO L131 PetriNetUnfolder]: For 311/311 co-relation queries the response was YES. [2022-12-12 20:34:29,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4095 conditions, 515 events. 284/515 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2134 event pairs, 0 based on Foata normal form. 1/406 useless extension candidates. Maximal degree in co-relation 3726. Up to 497 conditions per place. [2022-12-12 20:34:29,137 INFO L137 encePairwiseOnDemand]: 11/15 looper letters, 136 selfloop transitions, 32 changer transitions 10/184 dead transitions. [2022-12-12 20:34:29,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 184 transitions, 3000 flow [2022-12-12 20:34:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:34:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:34:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2022-12-12 20:34:29,139 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2022-12-12 20:34:29,140 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 34 predicate places. [2022-12-12 20:34:29,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 184 transitions, 3000 flow [2022-12-12 20:34:29,144 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 174 transitions, 2828 flow [2022-12-12 20:34:29,144 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 174 transitions, 2828 flow [2022-12-12 20:34:29,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 20:34:29,144 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:29,145 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:29,157 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 20:34:29,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:29,349 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 20:34:29,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:29,350 INFO L85 PathProgramCache]: Analyzing trace with hash 946724711, now seen corresponding path program 5 times [2022-12-12 20:34:29,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:29,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475288079] [2022-12-12 20:34:29,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:29,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:29,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:29,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475288079] [2022-12-12 20:34:29,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475288079] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:29,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673114350] [2022-12-12 20:34:29,443 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 20:34:29,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:29,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:29,444 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 20:34:29,446 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 20:34:29,485 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:34:29,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:34:29,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 20:34:29,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:29,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:29,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673114350] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:29,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:29,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-12 20:34:29,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725830288] [2022-12-12 20:34:29,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:29,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-12 20:34:29,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:29,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-12 20:34:29,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-12-12 20:34:29,634 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:34:29,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 174 transitions, 2828 flow. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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 20:34:29,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:29,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:34:29,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:29,983 INFO L130 PetriNetUnfolder]: 402/740 cut-off events. [2022-12-12 20:34:29,983 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2022-12-12 20:34:29,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6652 conditions, 740 events. 402/740 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3501 event pairs, 0 based on Foata normal form. 0/596 useless extension candidates. Maximal degree in co-relation 6211. Up to 722 conditions per place. [2022-12-12 20:34:29,988 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 198 selfloop transitions, 73 changer transitions 10/281 dead transitions. [2022-12-12 20:34:29,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 281 transitions, 5151 flow [2022-12-12 20:34:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 20:34:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 20:34:29,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 96 transitions. [2022-12-12 20:34:29,989 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3764705882352941 [2022-12-12 20:34:29,990 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 50 predicate places. [2022-12-12 20:34:29,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 281 transitions, 5151 flow [2022-12-12 20:34:29,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 271 transitions, 4962 flow [2022-12-12 20:34:29,996 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 271 transitions, 4962 flow [2022-12-12 20:34:29,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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 20:34:29,996 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:29,996 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:30,009 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 20:34:30,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:30,201 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 20:34:30,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:30,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1833792153, now seen corresponding path program 6 times [2022-12-12 20:34:30,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:30,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344134609] [2022-12-12 20:34:30,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:30,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:30,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:30,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344134609] [2022-12-12 20:34:30,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344134609] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:30,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502328941] [2022-12-12 20:34:30,290 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 20:34:30,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:30,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:30,304 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 20:34:30,357 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 20:34:30,417 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 20:34:30,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:34:30,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 20:34:30,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:30,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:30,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:30,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502328941] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:30,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:30,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-12 20:34:30,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891660481] [2022-12-12 20:34:30,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:30,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-12 20:34:30,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:30,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-12 20:34:30,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-12 20:34:30,556 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:34:30,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 271 transitions, 4962 flow. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 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 20:34:30,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:30,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:34:30,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:31,144 INFO L130 PetriNetUnfolder]: 588/1103 cut-off events. [2022-12-12 20:34:31,145 INFO L131 PetriNetUnfolder]: For 393/393 co-relation queries the response was YES. [2022-12-12 20:34:31,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11057 conditions, 1103 events. 588/1103 cut-off events. For 393/393 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5871 event pairs, 4 based on Foata normal form. 4/871 useless extension candidates. Maximal degree in co-relation 10338. Up to 1079 conditions per place. [2022-12-12 20:34:31,156 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 347 selfloop transitions, 178 changer transitions 22/547 dead transitions. [2022-12-12 20:34:31,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 547 transitions, 11117 flow [2022-12-12 20:34:31,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-12 20:34:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-12 20:34:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 125 transitions. [2022-12-12 20:34:31,158 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2022-12-12 20:34:31,159 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 74 predicate places. [2022-12-12 20:34:31,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 547 transitions, 11117 flow [2022-12-12 20:34:31,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 525 transitions, 10674 flow [2022-12-12 20:34:31,174 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 525 transitions, 10674 flow [2022-12-12 20:34:31,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 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 20:34:31,174 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:31,174 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:31,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-12 20:34:31,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:31,379 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 20:34:31,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:31,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1001754613, now seen corresponding path program 7 times [2022-12-12 20:34:31,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:31,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793490625] [2022-12-12 20:34:31,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:31,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:31,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:31,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793490625] [2022-12-12 20:34:31,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793490625] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:31,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828076427] [2022-12-12 20:34:31,475 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 20:34:31,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:31,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:31,476 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 20:34:31,477 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 20:34:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:31,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 20:34:31,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:31,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:31,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828076427] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:31,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:31,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-12 20:34:31,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542448154] [2022-12-12 20:34:31,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:31,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-12 20:34:31,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:31,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-12 20:34:31,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-12-12 20:34:31,663 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:34:31,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 525 transitions, 10674 flow. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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 20:34:31,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:31,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:34:31,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:32,160 INFO L130 PetriNetUnfolder]: 515/979 cut-off events. [2022-12-12 20:34:32,160 INFO L131 PetriNetUnfolder]: For 417/417 co-relation queries the response was YES. [2022-12-12 20:34:32,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10790 conditions, 979 events. 515/979 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5158 event pairs, 0 based on Foata normal form. 16/827 useless extension candidates. Maximal degree in co-relation 10141. Up to 955 conditions per place. [2022-12-12 20:34:32,169 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 335 selfloop transitions, 137 changer transitions 25/497 dead transitions. [2022-12-12 20:34:32,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 497 transitions, 11093 flow [2022-12-12 20:34:32,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-12 20:34:32,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-12 20:34:32,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 113 transitions. [2022-12-12 20:34:32,170 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2022-12-12 20:34:32,172 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 92 predicate places. [2022-12-12 20:34:32,172 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 497 transitions, 11093 flow [2022-12-12 20:34:32,180 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 472 transitions, 10525 flow [2022-12-12 20:34:32,180 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 472 transitions, 10525 flow [2022-12-12 20:34:32,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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 20:34:32,181 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:32,181 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:32,202 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 20:34:32,385 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,SelfDestructingSolverStorable9 [2022-12-12 20:34:32,387 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 20:34:32,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:32,388 INFO L85 PathProgramCache]: Analyzing trace with hash 399029215, now seen corresponding path program 8 times [2022-12-12 20:34:32,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:32,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449772262] [2022-12-12 20:34:32,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:32,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:32,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:32,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449772262] [2022-12-12 20:34:32,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449772262] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:32,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116128330] [2022-12-12 20:34:32,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:34:32,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:32,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:32,453 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 20:34:32,455 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 20:34:32,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:34:32,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:34:32,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 20:34:32,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:32,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:32,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:32,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116128330] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:32,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:32,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2022-12-12 20:34:32,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990307873] [2022-12-12 20:34:32,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:32,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-12 20:34:32,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:32,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-12 20:34:32,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-12 20:34:32,616 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:34:32,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 472 transitions, 10525 flow. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 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 20:34:32,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:32,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:34:32,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:33,109 INFO L130 PetriNetUnfolder]: 662/1314 cut-off events. [2022-12-12 20:34:33,109 INFO L131 PetriNetUnfolder]: For 492/492 co-relation queries the response was YES. [2022-12-12 20:34:33,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15833 conditions, 1314 events. 662/1314 cut-off events. For 492/492 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7735 event pairs, 10 based on Foata normal form. 4/1080 useless extension candidates. Maximal degree in co-relation 14727. Up to 1290 conditions per place. [2022-12-12 20:34:33,118 INFO L137 encePairwiseOnDemand]: 8/15 looper letters, 531 selfloop transitions, 155 changer transitions 4/690 dead transitions. [2022-12-12 20:34:33,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 690 transitions, 16827 flow [2022-12-12 20:34:33,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-12 20:34:33,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-12 20:34:33,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 111 transitions. [2022-12-12 20:34:33,119 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3523809523809524 [2022-12-12 20:34:33,119 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 112 predicate places. [2022-12-12 20:34:33,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 690 transitions, 16827 flow [2022-12-12 20:34:33,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 686 transitions, 16731 flow [2022-12-12 20:34:33,131 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 686 transitions, 16731 flow [2022-12-12 20:34:33,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 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 20:34:33,131 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:33,132 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:33,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-12 20:34:33,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:33,338 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 20:34:33,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:33,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1231066755, now seen corresponding path program 9 times [2022-12-12 20:34:33,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:33,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301555075] [2022-12-12 20:34:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:33,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:33,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:33,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301555075] [2022-12-12 20:34:33,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301555075] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:33,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657355029] [2022-12-12 20:34:33,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 20:34:33,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:33,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:33,405 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 20:34:33,418 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 20:34:33,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 20:34:33,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:34:33,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 20:34:33,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:33,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:34:33,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657355029] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:33,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:33,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2022-12-12 20:34:33,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237621734] [2022-12-12 20:34:33,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:33,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-12 20:34:33,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:33,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-12 20:34:33,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-12 20:34:33,590 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:34:33,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 686 transitions, 16731 flow. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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 20:34:33,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:33,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:34:33,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:34,075 INFO L130 PetriNetUnfolder]: 618/1211 cut-off events. [2022-12-12 20:34:34,075 INFO L131 PetriNetUnfolder]: For 428/428 co-relation queries the response was YES. [2022-12-12 20:34:34,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15795 conditions, 1211 events. 618/1211 cut-off events. For 428/428 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6897 event pairs, 4 based on Foata normal form. 20/1033 useless extension candidates. Maximal degree in co-relation 14843. Up to 1187 conditions per place. [2022-12-12 20:34:34,084 INFO L137 encePairwiseOnDemand]: 8/15 looper letters, 521 selfloop transitions, 74 changer transitions 28/623 dead transitions. [2022-12-12 20:34:34,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 623 transitions, 16423 flow [2022-12-12 20:34:34,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 20:34:34,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 20:34:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 90 transitions. [2022-12-12 20:34:34,085 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2022-12-12 20:34:34,085 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 127 predicate places. [2022-12-12 20:34:34,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 623 transitions, 16423 flow [2022-12-12 20:34:34,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 595 transitions, 15674 flow [2022-12-12 20:34:34,097 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 595 transitions, 15674 flow [2022-12-12 20:34:34,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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 20:34:34,097 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:34,097 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:34,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-12 20:34:34,302 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,SelfDestructingSolverStorable11 [2022-12-12 20:34:34,303 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 20:34:34,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:34,303 INFO L85 PathProgramCache]: Analyzing trace with hash 523605458, now seen corresponding path program 10 times [2022-12-12 20:34:34,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:34,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202296172] [2022-12-12 20:34:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:34,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:34:34,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:34,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202296172] [2022-12-12 20:34:34,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202296172] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:34,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973028839] [2022-12-12 20:34:34,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 20:34:34,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:34,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:34,376 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:34:34,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-12 20:34:34,422 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 20:34:34,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:34:34,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 20:34:34,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:34:34,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:34:34,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973028839] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:34,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:34,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 6 [2022-12-12 20:34:34,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028325198] [2022-12-12 20:34:34,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:34,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 20:34:34,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:34,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 20:34:34,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-12 20:34:34,471 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 15 [2022-12-12 20:34:34,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 595 transitions, 15674 flow. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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 20:34:34,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:34,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 15 [2022-12-12 20:34:34,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:34,747 INFO L130 PetriNetUnfolder]: 627/1210 cut-off events. [2022-12-12 20:34:34,747 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2022-12-12 20:34:34,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16981 conditions, 1210 events. 627/1210 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6752 event pairs, 4 based on Foata normal form. 4/1022 useless extension candidates. Maximal degree in co-relation 15960. Up to 1186 conditions per place. [2022-12-12 20:34:34,756 INFO L137 encePairwiseOnDemand]: 11/15 looper letters, 559 selfloop transitions, 54 changer transitions 4/620 dead transitions. [2022-12-12 20:34:34,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 620 transitions, 17567 flow [2022-12-12 20:34:34,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 20:34:34,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 20:34:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 58 transitions. [2022-12-12 20:34:34,757 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2022-12-12 20:34:34,758 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 133 predicate places. [2022-12-12 20:34:34,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 620 transitions, 17567 flow [2022-12-12 20:34:34,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 616 transitions, 17452 flow [2022-12-12 20:34:34,770 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 616 transitions, 17452 flow [2022-12-12 20:34:34,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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 20:34:34,771 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:34,771 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:34,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-12 20:34:34,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-12 20:34:34,976 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 20:34:34,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:34,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1310515272, now seen corresponding path program 11 times [2022-12-12 20:34:34,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:34,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297568029] [2022-12-12 20:34:34,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:34,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:35,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:35,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297568029] [2022-12-12 20:34:35,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297568029] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:35,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120644786] [2022-12-12 20:34:35,080 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 20:34:35,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:35,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:35,081 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:34:35,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-12 20:34:35,148 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 20:34:35,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:34:35,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-12 20:34:35,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:35,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:35,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120644786] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:35,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:35,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-12-12 20:34:35,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137592991] [2022-12-12 20:34:35,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:35,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 20:34:35,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:35,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 20:34:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-12 20:34:35,387 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:34:35,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 616 transitions, 17452 flow. Second operand has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 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 20:34:35,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:35,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:34:35,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:36,160 INFO L130 PetriNetUnfolder]: 838/1600 cut-off events. [2022-12-12 20:34:36,160 INFO L131 PetriNetUnfolder]: For 600/600 co-relation queries the response was YES. [2022-12-12 20:34:36,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24076 conditions, 1600 events. 838/1600 cut-off events. For 600/600 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 9385 event pairs, 6 based on Foata normal form. 0/1334 useless extension candidates. Maximal degree in co-relation 22798. Up to 1576 conditions per place. [2022-12-12 20:34:36,172 INFO L137 encePairwiseOnDemand]: 8/15 looper letters, 581 selfloop transitions, 236 changer transitions 5/822 dead transitions. [2022-12-12 20:34:36,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 822 transitions, 24942 flow [2022-12-12 20:34:36,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-12 20:34:36,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-12 20:34:36,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 133 transitions. [2022-12-12 20:34:36,173 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36944444444444446 [2022-12-12 20:34:36,173 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 156 predicate places. [2022-12-12 20:34:36,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 822 transitions, 24942 flow [2022-12-12 20:34:36,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 817 transitions, 24795 flow [2022-12-12 20:34:36,189 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 817 transitions, 24795 flow [2022-12-12 20:34:36,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 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 20:34:36,189 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:36,189 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:36,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-12 20:34:36,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-12 20:34:36,394 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 20:34:36,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:36,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1972490811, now seen corresponding path program 12 times [2022-12-12 20:34:36,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:36,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479486442] [2022-12-12 20:34:36,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:36,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:36,495 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 20:34:36,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:36,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479486442] [2022-12-12 20:34:36,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479486442] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:36,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483665191] [2022-12-12 20:34:36,496 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 20:34:36,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:36,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:36,497 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:34:36,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-12 20:34:36,580 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 20:34:36,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:34:36,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-12 20:34:36,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:36,618 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 20:34:36,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:36,795 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:36,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483665191] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:36,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:36,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 7] total 10 [2022-12-12 20:34:36,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721260378] [2022-12-12 20:34:36,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:36,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 20:34:36,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:36,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 20:34:36,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-12 20:34:36,796 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 15 [2022-12-12 20:34:36,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 817 transitions, 24795 flow. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 20:34:36,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:36,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 15 [2022-12-12 20:34:36,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:37,458 INFO L130 PetriNetUnfolder]: 1319/2509 cut-off events. [2022-12-12 20:34:37,458 INFO L131 PetriNetUnfolder]: For 1058/1058 co-relation queries the response was YES. [2022-12-12 20:34:37,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40284 conditions, 2509 events. 1319/2509 cut-off events. For 1058/1058 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 16315 event pairs, 8 based on Foata normal form. 2/2059 useless extension candidates. Maximal degree in co-relation 38263. Up to 2485 conditions per place. [2022-12-12 20:34:37,474 INFO L137 encePairwiseOnDemand]: 11/15 looper letters, 1000 selfloop transitions, 217 changer transitions 45/1271 dead transitions. [2022-12-12 20:34:37,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 1271 transitions, 41170 flow [2022-12-12 20:34:37,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 20:34:37,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 20:34:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2022-12-12 20:34:37,475 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-12-12 20:34:37,475 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 161 predicate places. [2022-12-12 20:34:37,475 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 1271 transitions, 41170 flow [2022-12-12 20:34:37,501 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 1226 transitions, 39700 flow [2022-12-12 20:34:37,501 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 1226 transitions, 39700 flow [2022-12-12 20:34:37,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 20:34:37,501 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:37,501 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:37,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-12 20:34:37,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-12 20:34:37,708 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:34:37,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:37,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1491050460, now seen corresponding path program 13 times [2022-12-12 20:34:37,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:37,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896959985] [2022-12-12 20:34:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:37,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:37,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:37,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:37,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896959985] [2022-12-12 20:34:37,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896959985] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:37,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854654834] [2022-12-12 20:34:37,828 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 20:34:37,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:37,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:37,829 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:34:37,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-12 20:34:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:37,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-12 20:34:37,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:37,964 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:37,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:38,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854654834] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:38,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:38,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-12-12 20:34:38,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759763687] [2022-12-12 20:34:38,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:38,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 20:34:38,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 20:34:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-12-12 20:34:38,135 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:34:38,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 1226 transitions, 39700 flow. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 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 20:34:38,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:38,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:34:38,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:39,455 INFO L130 PetriNetUnfolder]: 1517/2921 cut-off events. [2022-12-12 20:34:39,455 INFO L131 PetriNetUnfolder]: For 1055/1055 co-relation queries the response was YES. [2022-12-12 20:34:39,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49836 conditions, 2921 events. 1517/2921 cut-off events. For 1055/1055 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 19939 event pairs, 8 based on Foata normal form. 12/2443 useless extension candidates. Maximal degree in co-relation 47554. Up to 2897 conditions per place. [2022-12-12 20:34:39,475 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 1080 selfloop transitions, 399 changer transitions 24/1503 dead transitions. [2022-12-12 20:34:39,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 1503 transitions, 51705 flow [2022-12-12 20:34:39,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-12 20:34:39,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-12 20:34:39,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 145 transitions. [2022-12-12 20:34:39,477 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3717948717948718 [2022-12-12 20:34:39,478 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 186 predicate places. [2022-12-12 20:34:39,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 1503 transitions, 51705 flow [2022-12-12 20:34:39,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 1479 transitions, 50871 flow [2022-12-12 20:34:39,509 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 1479 transitions, 50871 flow [2022-12-12 20:34:39,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 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 20:34:39,509 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:39,509 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:39,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-12 20:34:39,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:39,713 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:34:39,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:39,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1562783304, now seen corresponding path program 14 times [2022-12-12 20:34:39,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:39,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086405648] [2022-12-12 20:34:39,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:39,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:39,877 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:39,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:39,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086405648] [2022-12-12 20:34:39,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086405648] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:39,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674688694] [2022-12-12 20:34:39,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:34:39,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:39,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:39,903 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:34:39,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-12 20:34:39,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:34:39,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:34:39,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 20:34:39,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:40,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:40,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674688694] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:40,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:40,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-12-12 20:34:40,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417373520] [2022-12-12 20:34:40,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:40,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 20:34:40,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:40,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 20:34:40,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2022-12-12 20:34:40,204 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:34:40,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 1479 transitions, 50871 flow. Second operand has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 21 states have internal predecessors, (41), 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 20:34:40,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:40,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:34:40,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:42,295 INFO L130 PetriNetUnfolder]: 1853/3622 cut-off events. [2022-12-12 20:34:42,295 INFO L131 PetriNetUnfolder]: For 1170/1170 co-relation queries the response was YES. [2022-12-12 20:34:42,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65451 conditions, 3622 events. 1853/3622 cut-off events. For 1170/1170 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 26193 event pairs, 22 based on Foata normal form. 10/2990 useless extension candidates. Maximal degree in co-relation 62113. Up to 3598 conditions per place. [2022-12-12 20:34:42,319 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 1232 selfloop transitions, 663 changer transitions 10/1905 dead transitions. [2022-12-12 20:34:42,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 1905 transitions, 69363 flow [2022-12-12 20:34:42,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 20:34:42,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 20:34:42,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 186 transitions. [2022-12-12 20:34:42,320 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.35428571428571426 [2022-12-12 20:34:42,320 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 220 predicate places. [2022-12-12 20:34:42,320 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 1905 transitions, 69363 flow [2022-12-12 20:34:42,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 1895 transitions, 69003 flow [2022-12-12 20:34:42,360 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 1895 transitions, 69003 flow [2022-12-12 20:34:42,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 21 states have internal predecessors, (41), 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 20:34:42,360 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:42,360 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:42,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-12 20:34:42,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-12 20:34:42,565 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:34:42,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:42,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1659788522, now seen corresponding path program 15 times [2022-12-12 20:34:42,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:42,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176822996] [2022-12-12 20:34:42,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:42,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:42,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:42,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:42,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176822996] [2022-12-12 20:34:42,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176822996] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:42,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186209883] [2022-12-12 20:34:42,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 20:34:42,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:42,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:42,670 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:34:42,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-12 20:34:42,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 20:34:42,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:34:42,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 20:34:42,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:42,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:42,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:42,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:42,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186209883] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:42,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:42,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-12-12 20:34:42,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042518502] [2022-12-12 20:34:42,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:42,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 20:34:42,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:42,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 20:34:42,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-12-12 20:34:42,907 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:34:42,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 1895 transitions, 69003 flow. Second operand has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 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 20:34:42,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:42,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:34:42,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:45,089 INFO L130 PetriNetUnfolder]: 1905/3698 cut-off events. [2022-12-12 20:34:45,089 INFO L131 PetriNetUnfolder]: For 1170/1170 co-relation queries the response was YES. [2022-12-12 20:34:45,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70520 conditions, 3698 events. 1905/3698 cut-off events. For 1170/1170 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 26724 event pairs, 22 based on Foata normal form. 16/3084 useless extension candidates. Maximal degree in co-relation 67235. Up to 3674 conditions per place. [2022-12-12 20:34:45,163 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 1409 selfloop transitions, 501 changer transitions 34/1944 dead transitions. [2022-12-12 20:34:45,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 1944 transitions, 74661 flow [2022-12-12 20:34:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-12 20:34:45,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-12 20:34:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 154 transitions. [2022-12-12 20:34:45,165 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.35402298850574715 [2022-12-12 20:34:45,165 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 247 predicate places. [2022-12-12 20:34:45,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 1944 transitions, 74661 flow [2022-12-12 20:34:45,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 1910 transitions, 73345 flow [2022-12-12 20:34:45,210 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 1910 transitions, 73345 flow [2022-12-12 20:34:45,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 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 20:34:45,211 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:45,211 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:45,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-12 20:34:45,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-12 20:34:45,415 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:34:45,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:45,415 INFO L85 PathProgramCache]: Analyzing trace with hash -700935544, now seen corresponding path program 16 times [2022-12-12 20:34:45,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:45,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666633668] [2022-12-12 20:34:45,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:45,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:45,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:45,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666633668] [2022-12-12 20:34:45,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666633668] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:45,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916867257] [2022-12-12 20:34:45,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 20:34:45,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:45,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:45,567 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:34:45,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-12 20:34:45,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 20:34:45,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:34:45,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 20:34:45,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:45,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:45,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916867257] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:45,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:45,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-12-12 20:34:45,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627845270] [2022-12-12 20:34:45,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:45,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 20:34:45,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:45,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 20:34:45,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-12-12 20:34:45,792 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:34:45,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 1910 transitions, 73345 flow. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 20:34:45,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:45,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:34:45,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:48,605 INFO L130 PetriNetUnfolder]: 2187/4283 cut-off events. [2022-12-12 20:34:48,605 INFO L131 PetriNetUnfolder]: For 1291/1291 co-relation queries the response was YES. [2022-12-12 20:34:48,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85986 conditions, 4283 events. 2187/4283 cut-off events. For 1291/1291 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 32106 event pairs, 36 based on Foata normal form. 8/3565 useless extension candidates. Maximal degree in co-relation 81835. Up to 4259 conditions per place. [2022-12-12 20:34:48,636 INFO L137 encePairwiseOnDemand]: 8/15 looper letters, 1812 selfloop transitions, 426 changer transitions 12/2250 dead transitions. [2022-12-12 20:34:48,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 2250 transitions, 90933 flow [2022-12-12 20:34:48,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 20:34:48,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 20:34:48,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 182 transitions. [2022-12-12 20:34:48,637 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2022-12-12 20:34:48,638 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 279 predicate places. [2022-12-12 20:34:48,638 INFO L82 GeneralOperation]: Start removeDead. Operand has 299 places, 2250 transitions, 90933 flow [2022-12-12 20:34:48,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 299 places, 2238 transitions, 90444 flow [2022-12-12 20:34:48,692 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 2238 transitions, 90444 flow [2022-12-12 20:34:48,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 20:34:48,692 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:48,692 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:48,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-12 20:34:48,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:48,897 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:34:48,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:48,897 INFO L85 PathProgramCache]: Analyzing trace with hash 899693210, now seen corresponding path program 17 times [2022-12-12 20:34:48,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:48,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806235882] [2022-12-12 20:34:48,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:48,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:49,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:49,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:49,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806235882] [2022-12-12 20:34:49,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806235882] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:49,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947798002] [2022-12-12 20:34:49,012 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 20:34:49,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:49,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:49,029 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:34:49,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-12 20:34:49,101 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 20:34:49,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:34:49,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-12 20:34:49,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:49,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:49,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947798002] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:49,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:49,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-12-12 20:34:49,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131763877] [2022-12-12 20:34:49,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:49,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-12 20:34:49,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-12 20:34:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2022-12-12 20:34:49,338 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:34:49,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 2238 transitions, 90444 flow. Second operand has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 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 20:34:49,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:49,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:34:49,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:53,090 INFO L130 PetriNetUnfolder]: 2683/5193 cut-off events. [2022-12-12 20:34:53,090 INFO L131 PetriNetUnfolder]: For 1312/1312 co-relation queries the response was YES. [2022-12-12 20:34:53,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109472 conditions, 5193 events. 2683/5193 cut-off events. For 1312/1312 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 40276 event pairs, 28 based on Foata normal form. 24/4387 useless extension candidates. Maximal degree in co-relation 105160. Up to 5169 conditions per place. [2022-12-12 20:34:53,134 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 2044 selfloop transitions, 672 changer transitions 62/2778 dead transitions. [2022-12-12 20:34:53,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 2778 transitions, 117837 flow [2022-12-12 20:34:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-12 20:34:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-12 20:34:53,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 157 transitions. [2022-12-12 20:34:53,137 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3738095238095238 [2022-12-12 20:34:53,137 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 306 predicate places. [2022-12-12 20:34:53,137 INFO L82 GeneralOperation]: Start removeDead. Operand has 326 places, 2778 transitions, 117837 flow [2022-12-12 20:34:53,206 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 326 places, 2716 transitions, 115188 flow [2022-12-12 20:34:53,206 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 2716 transitions, 115188 flow [2022-12-12 20:34:53,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 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 20:34:53,206 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:53,206 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:53,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-12 20:34:53,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:53,410 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:34:53,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:53,410 INFO L85 PathProgramCache]: Analyzing trace with hash -907859494, now seen corresponding path program 18 times [2022-12-12 20:34:53,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:53,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178762785] [2022-12-12 20:34:53,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:53,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:53,531 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:53,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:53,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178762785] [2022-12-12 20:34:53,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178762785] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:53,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974778597] [2022-12-12 20:34:53,532 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 20:34:53,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:53,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:53,533 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:34:53,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-12 20:34:53,587 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 20:34:53,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:34:53,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-12 20:34:53,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:53,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:53,808 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:53,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974778597] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:53,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:53,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-12-12 20:34:53,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122507151] [2022-12-12 20:34:53,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:53,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-12 20:34:53,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:53,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-12 20:34:53,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2022-12-12 20:34:53,809 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:34:53,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 2716 transitions, 115188 flow. Second operand has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 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 20:34:53,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:53,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:34:53,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:34:58,658 INFO L130 PetriNetUnfolder]: 3245/6279 cut-off events. [2022-12-12 20:34:58,658 INFO L131 PetriNetUnfolder]: For 1558/1558 co-relation queries the response was YES. [2022-12-12 20:34:58,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138659 conditions, 6279 events. 3245/6279 cut-off events. For 1558/1558 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 50063 event pairs, 22 based on Foata normal form. 44/5341 useless extension candidates. Maximal degree in co-relation 133606. Up to 6255 conditions per place. [2022-12-12 20:34:58,705 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 2353 selfloop transitions, 953 changer transitions 81/3387 dead transitions. [2022-12-12 20:34:58,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 3387 transitions, 150456 flow [2022-12-12 20:34:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 20:34:58,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 20:34:58,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 166 transitions. [2022-12-12 20:34:58,706 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.35698924731182796 [2022-12-12 20:34:58,706 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 336 predicate places. [2022-12-12 20:34:58,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 356 places, 3387 transitions, 150456 flow [2022-12-12 20:34:58,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 356 places, 3306 transitions, 146832 flow [2022-12-12 20:34:58,790 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 3306 transitions, 146832 flow [2022-12-12 20:34:58,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 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 20:34:58,790 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:34:58,790 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:34:58,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-12 20:34:58,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:58,994 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:34:58,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:34:58,995 INFO L85 PathProgramCache]: Analyzing trace with hash 78628759, now seen corresponding path program 19 times [2022-12-12 20:34:58,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:34:58,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955282439] [2022-12-12 20:34:58,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:34:58,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:34:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:59,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:34:59,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955282439] [2022-12-12 20:34:59,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955282439] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:34:59,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860166058] [2022-12-12 20:34:59,123 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 20:34:59,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:34:59,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:34:59,124 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:34:59,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-12 20:34:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:34:59,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-12 20:34:59,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:34:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:59,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:34:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:34:59,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860166058] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:34:59,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:34:59,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-12-12 20:34:59,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677036068] [2022-12-12 20:34:59,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:34:59,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-12 20:34:59,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:34:59,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-12 20:34:59,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2022-12-12 20:34:59,458 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:34:59,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 3306 transitions, 146832 flow. Second operand has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 26 states have internal predecessors, (41), 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 20:34:59,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:34:59,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:34:59,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:35:05,929 INFO L130 PetriNetUnfolder]: 3487/6721 cut-off events. [2022-12-12 20:35:05,929 INFO L131 PetriNetUnfolder]: For 1489/1489 co-relation queries the response was YES. [2022-12-12 20:35:05,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155129 conditions, 6721 events. 3487/6721 cut-off events. For 1489/1489 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 53849 event pairs, 24 based on Foata normal form. 52/5751 useless extension candidates. Maximal degree in co-relation 149851. Up to 6697 conditions per place. [2022-12-12 20:35:05,984 INFO L137 encePairwiseOnDemand]: 8/15 looper letters, 3343 selfloop transitions, 195 changer transitions 76/3614 dead transitions. [2022-12-12 20:35:05,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 3614 transitions, 167744 flow [2022-12-12 20:35:05,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-12 20:35:05,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-12 20:35:05,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 121 transitions. [2022-12-12 20:35:05,985 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3507246376811594 [2022-12-12 20:35:05,986 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 358 predicate places. [2022-12-12 20:35:05,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 3614 transitions, 167744 flow [2022-12-12 20:35:06,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 3538 transitions, 164194 flow [2022-12-12 20:35:06,088 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 3538 transitions, 164194 flow [2022-12-12 20:35:06,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 26 states have internal predecessors, (41), 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 20:35:06,088 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:35:06,088 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:35:06,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-12 20:35:06,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-12 20:35:06,294 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:35:06,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:35:06,295 INFO L85 PathProgramCache]: Analyzing trace with hash -592615284, now seen corresponding path program 20 times [2022-12-12 20:35:06,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:35:06,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491350938] [2022-12-12 20:35:06,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:35:06,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:35:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:35:06,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:35:06,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:35:06,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491350938] [2022-12-12 20:35:06,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491350938] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:35:06,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863664887] [2022-12-12 20:35:06,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:35:06,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:35:06,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:35:06,389 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:35:06,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-12 20:35:06,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:35:06,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:35:06,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 20:35:06,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:35:06,530 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:35:06,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:35:06,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:35:06,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863664887] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:35:06,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:35:06,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2022-12-12 20:35:06,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23595926] [2022-12-12 20:35:06,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:35:06,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 20:35:06,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:35:06,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 20:35:06,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2022-12-12 20:35:06,636 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:35:06,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 3538 transitions, 164194 flow. Second operand has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 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 20:35:06,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:35:06,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:35:06,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:35:13,981 INFO L130 PetriNetUnfolder]: 3767/7237 cut-off events. [2022-12-12 20:35:13,981 INFO L131 PetriNetUnfolder]: For 1541/1541 co-relation queries the response was YES. [2022-12-12 20:35:13,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174269 conditions, 7237 events. 3767/7237 cut-off events. For 1541/1541 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 58291 event pairs, 28 based on Foata normal form. 10/6159 useless extension candidates. Maximal degree in co-relation 168472. Up to 7213 conditions per place. [2022-12-12 20:35:14,038 INFO L137 encePairwiseOnDemand]: 8/15 looper letters, 3046 selfloop transitions, 842 changer transitions 34/3922 dead transitions. [2022-12-12 20:35:14,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 3922 transitions, 189858 flow [2022-12-12 20:35:14,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-12 20:35:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-12 20:35:14,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 147 transitions. [2022-12-12 20:35:14,039 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.296969696969697 [2022-12-12 20:35:14,039 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 390 predicate places. [2022-12-12 20:35:14,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 410 places, 3922 transitions, 189858 flow [2022-12-12 20:35:14,151 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 410 places, 3888 transitions, 188208 flow [2022-12-12 20:35:14,152 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 3888 transitions, 188208 flow [2022-12-12 20:35:14,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 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 20:35:14,152 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:35:14,152 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:35:14,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-12-12 20:35:14,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-12 20:35:14,357 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:35:14,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:35:14,357 INFO L85 PathProgramCache]: Analyzing trace with hash 574825072, now seen corresponding path program 21 times [2022-12-12 20:35:14,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:35:14,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842680109] [2022-12-12 20:35:14,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:35:14,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:35:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:35:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:35:14,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:35:14,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842680109] [2022-12-12 20:35:14,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842680109] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:35:14,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954965763] [2022-12-12 20:35:14,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 20:35:14,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:35:14,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:35:14,455 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:35:14,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-12 20:35:14,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 20:35:14,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:35:14,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-12 20:35:14,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:35:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:35:14,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:35:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:35:14,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954965763] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:35:14,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:35:14,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-12-12 20:35:14,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511505396] [2022-12-12 20:35:14,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:35:14,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-12 20:35:14,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:35:14,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-12 20:35:14,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2022-12-12 20:35:14,698 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:35:14,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 3888 transitions, 188208 flow. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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 20:35:14,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:35:14,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:35:14,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:35:26,209 INFO L130 PetriNetUnfolder]: 4157/8019 cut-off events. [2022-12-12 20:35:26,210 INFO L131 PetriNetUnfolder]: For 1796/1796 co-relation queries the response was YES. [2022-12-12 20:35:26,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201127 conditions, 8019 events. 4157/8019 cut-off events. For 1796/1796 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 66313 event pairs, 0 based on Foata normal form. 20/6865 useless extension candidates. Maximal degree in co-relation 194313. Up to 7995 conditions per place. [2022-12-12 20:35:26,398 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 4039 selfloop transitions, 513 changer transitions 125/4677 dead transitions. [2022-12-12 20:35:26,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 4677 transitions, 235912 flow [2022-12-12 20:35:26,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 20:35:26,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 20:35:26,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 183 transitions. [2022-12-12 20:35:26,401 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3388888888888889 [2022-12-12 20:35:26,401 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 424 predicate places. [2022-12-12 20:35:26,401 INFO L82 GeneralOperation]: Start removeDead. Operand has 444 places, 4677 transitions, 235912 flow [2022-12-12 20:35:26,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 444 places, 4552 transitions, 229578 flow [2022-12-12 20:35:26,536 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 4552 transitions, 229578 flow [2022-12-12 20:35:26,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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 20:35:26,536 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:35:26,536 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:35:26,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-12 20:35:26,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:35:26,741 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:35:26,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:35:26,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1196792945, now seen corresponding path program 22 times [2022-12-12 20:35:26,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:35:26,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672265326] [2022-12-12 20:35:26,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:35:26,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:35:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:35:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:35:26,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:35:26,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672265326] [2022-12-12 20:35:26,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672265326] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:35:26,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139787055] [2022-12-12 20:35:26,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 20:35:26,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:35:26,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:35:26,845 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:35:26,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-12 20:35:26,896 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 20:35:26,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:35:26,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 20:35:26,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:35:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:35:26,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:35:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:35:26,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139787055] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:35:26,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:35:26,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-12-12 20:35:26,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500390275] [2022-12-12 20:35:26,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:35:26,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 20:35:26,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:35:26,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 20:35:26,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-12 20:35:26,962 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 15 [2022-12-12 20:35:26,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 4552 transitions, 229578 flow. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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 20:35:26,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:35:26,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 15 [2022-12-12 20:35:26,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:35:41,917 INFO L130 PetriNetUnfolder]: 4085/7859 cut-off events. [2022-12-12 20:35:41,917 INFO L131 PetriNetUnfolder]: For 1866/1866 co-relation queries the response was YES. [2022-12-12 20:35:41,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204955 conditions, 7859 events. 4085/7859 cut-off events. For 1866/1866 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 64517 event pairs, 0 based on Foata normal form. 4/6719 useless extension candidates. Maximal degree in co-relation 197875. Up to 7835 conditions per place. [2022-12-12 20:35:41,984 INFO L137 encePairwiseOnDemand]: 11/15 looper letters, 4221 selfloop transitions, 355 changer transitions 4/4583 dead transitions. [2022-12-12 20:35:41,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 4583 transitions, 240300 flow [2022-12-12 20:35:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 20:35:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 20:35:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 79 transitions. [2022-12-12 20:35:41,985 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5851851851851851 [2022-12-12 20:35:41,985 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 432 predicate places. [2022-12-12 20:35:41,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 452 places, 4583 transitions, 240300 flow [2022-12-12 20:35:42,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 452 places, 4579 transitions, 240089 flow [2022-12-12 20:35:42,120 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 4579 transitions, 240089 flow [2022-12-12 20:35:42,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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 20:35:42,120 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:35:42,120 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:35:42,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-12-12 20:35:42,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:35:42,325 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:35:42,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:35:42,325 INFO L85 PathProgramCache]: Analyzing trace with hash 2033165611, now seen corresponding path program 23 times [2022-12-12 20:35:42,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:35:42,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694092842] [2022-12-12 20:35:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:35:42,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:35:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:35:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:35:42,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:35:42,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694092842] [2022-12-12 20:35:42,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694092842] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:35:42,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194603315] [2022-12-12 20:35:42,452 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 20:35:42,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:35:42,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:35:42,453 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:35:42,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-12 20:35:42,511 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-12 20:35:42,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:35:42,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 20:35:42,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:35:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:35:42,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:35:42,834 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:35:42,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194603315] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:35:42,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:35:42,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-12-12 20:35:42,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532680013] [2022-12-12 20:35:42,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:35:42,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-12 20:35:42,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:35:42,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-12 20:35:42,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2022-12-12 20:35:42,835 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:35:42,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 4579 transitions, 240089 flow. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:35:42,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:35:42,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:35:42,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:35:59,522 INFO L130 PetriNetUnfolder]: 4672/9035 cut-off events. [2022-12-12 20:35:59,522 INFO L131 PetriNetUnfolder]: For 2060/2060 co-relation queries the response was YES. [2022-12-12 20:35:59,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244683 conditions, 9035 events. 4672/9035 cut-off events. For 2060/2060 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 76532 event pairs, 0 based on Foata normal form. 52/7799 useless extension candidates. Maximal degree in co-relation 236950. Up to 9011 conditions per place. [2022-12-12 20:35:59,598 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 3780 selfloop transitions, 1398 changer transitions 104/5282 dead transitions. [2022-12-12 20:35:59,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 5282 transitions, 287560 flow [2022-12-12 20:35:59,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 20:35:59,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 20:35:59,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 255 transitions. [2022-12-12 20:35:59,599 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2022-12-12 20:35:59,600 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 475 predicate places. [2022-12-12 20:35:59,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 495 places, 5282 transitions, 287560 flow [2022-12-12 20:35:59,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 495 places, 5178 transitions, 281869 flow [2022-12-12 20:35:59,741 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 5178 transitions, 281869 flow [2022-12-12 20:35:59,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:35:59,741 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:35:59,741 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:35:59,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-12 20:35:59,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-12 20:35:59,946 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:35:59,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:35:59,946 INFO L85 PathProgramCache]: Analyzing trace with hash -2127414633, now seen corresponding path program 24 times [2022-12-12 20:35:59,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:35:59,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978744920] [2022-12-12 20:35:59,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:35:59,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:35:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:36:00,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:36:00,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978744920] [2022-12-12 20:36:00,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978744920] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:36:00,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741911499] [2022-12-12 20:36:00,064 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 20:36:00,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:36:00,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:36:00,081 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:36:00,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-12 20:36:00,152 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-12-12 20:36:00,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:36:00,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-12 20:36:00,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:36:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:36:00,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:36:00,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:36:00,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741911499] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:36:00,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:36:00,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 27 [2022-12-12 20:36:00,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316065144] [2022-12-12 20:36:00,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:36:00,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-12 20:36:00,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:36:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-12 20:36:00,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-12-12 20:36:00,437 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:36:00,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 5178 transitions, 281869 flow. Second operand has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 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 20:36:00,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:36:00,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:36:00,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:36:24,053 INFO L130 PetriNetUnfolder]: 6087/11885 cut-off events. [2022-12-12 20:36:24,053 INFO L131 PetriNetUnfolder]: For 2544/2544 co-relation queries the response was YES. [2022-12-12 20:36:24,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333793 conditions, 11885 events. 6087/11885 cut-off events. For 2544/2544 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 105712 event pairs, 0 based on Foata normal form. 72/10249 useless extension candidates. Maximal degree in co-relation 322690. Up to 11861 conditions per place. [2022-12-12 20:36:24,284 INFO L137 encePairwiseOnDemand]: 6/15 looper letters, 4834 selfloop transitions, 1985 changer transitions 113/6932 dead transitions. [2022-12-12 20:36:24,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 6932 transitions, 391350 flow [2022-12-12 20:36:24,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-12 20:36:24,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-12 20:36:24,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 285 transitions. [2022-12-12 20:36:24,285 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3877551020408163 [2022-12-12 20:36:24,285 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 523 predicate places. [2022-12-12 20:36:24,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 543 places, 6932 transitions, 391350 flow [2022-12-12 20:36:24,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 543 places, 6819 transitions, 384938 flow [2022-12-12 20:36:24,489 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 6819 transitions, 384938 flow [2022-12-12 20:36:24,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 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 20:36:24,489 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:36:24,489 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:36:24,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-12-12 20:36:24,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-12 20:36:24,694 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:36:24,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:36:24,694 INFO L85 PathProgramCache]: Analyzing trace with hash -844999639, now seen corresponding path program 25 times [2022-12-12 20:36:24,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:36:24,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496798614] [2022-12-12 20:36:24,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:36:24,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:36:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:24,804 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 20:36:24,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:36:24,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496798614] [2022-12-12 20:36:24,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496798614] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:36:24,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158465204] [2022-12-12 20:36:24,805 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 20:36:24,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:36:24,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:36:24,806 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:36:24,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-12 20:36:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:36:24,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-12 20:36:24,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:36:24,962 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 20:36:24,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:36:25,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:36:25,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158465204] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:36:25,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:36:25,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-12-12 20:36:25,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461973981] [2022-12-12 20:36:25,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:36:25,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-12 20:36:25,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:36:25,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-12 20:36:25,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2022-12-12 20:36:25,122 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:36:25,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 6819 transitions, 384938 flow. Second operand has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 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 20:36:25,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:36:25,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:36:25,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:37:07,871 INFO L130 PetriNetUnfolder]: 6984/13698 cut-off events. [2022-12-12 20:37:07,871 INFO L131 PetriNetUnfolder]: For 2713/2713 co-relation queries the response was YES. [2022-12-12 20:37:07,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398439 conditions, 13698 events. 6984/13698 cut-off events. For 2713/2713 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 124753 event pairs, 0 based on Foata normal form. 48/11788 useless extension candidates. Maximal degree in co-relation 384821. Up to 13674 conditions per place. [2022-12-12 20:37:08,009 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 6185 selfloop transitions, 1731 changer transitions 48/7964 dead transitions. [2022-12-12 20:37:08,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 7964 transitions, 465586 flow [2022-12-12 20:37:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-12 20:37:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-12-12 20:37:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 218 transitions. [2022-12-12 20:37:08,010 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3544715447154472 [2022-12-12 20:37:08,014 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 563 predicate places. [2022-12-12 20:37:08,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 583 places, 7964 transitions, 465586 flow [2022-12-12 20:37:08,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 583 places, 7916 transitions, 462766 flow [2022-12-12 20:37:08,301 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 7916 transitions, 462766 flow [2022-12-12 20:37:08,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 23 states have internal predecessors, (43), 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 20:37:08,301 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:37:08,301 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:37:08,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-12-12 20:37:08,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-12 20:37:08,506 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:37:08,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:37:08,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1242363861, now seen corresponding path program 26 times [2022-12-12 20:37:08,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:37:08,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694547171] [2022-12-12 20:37:08,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:37:08,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:37:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:37:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:37:08,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:37:08,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694547171] [2022-12-12 20:37:08,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694547171] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:37:08,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046396531] [2022-12-12 20:37:08,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:37:08,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:37:08,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:37:08,643 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:37:08,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-12 20:37:08,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:37:08,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:37:08,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 20:37:08,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:37:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:37:08,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:37:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:37:09,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046396531] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:37:09,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:37:09,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-12-12 20:37:09,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750355439] [2022-12-12 20:37:09,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:37:09,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 20:37:09,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:37:09,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 20:37:09,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2022-12-12 20:37:09,064 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:37:09,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 7916 transitions, 462766 flow. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20:37:09,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:37:09,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:37:09,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:38:11,247 INFO L130 PetriNetUnfolder]: 8175/15894 cut-off events. [2022-12-12 20:38:11,248 INFO L131 PetriNetUnfolder]: For 3138/3138 co-relation queries the response was YES. [2022-12-12 20:38:11,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478201 conditions, 15894 events. 8175/15894 cut-off events. For 3138/3138 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 146968 event pairs, 0 based on Foata normal form. 0/13634 useless extension candidates. Maximal degree in co-relation 463022. Up to 15870 conditions per place. [2022-12-12 20:38:11,403 INFO L137 encePairwiseOnDemand]: 8/15 looper letters, 6563 selfloop transitions, 2646 changer transitions 0/9209 dead transitions. [2022-12-12 20:38:11,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 9209 transitions, 556740 flow [2022-12-12 20:38:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-12 20:38:11,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-12 20:38:11,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 188 transitions. [2022-12-12 20:38:11,405 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3686274509803922 [2022-12-12 20:38:11,405 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 596 predicate places. [2022-12-12 20:38:11,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 616 places, 9209 transitions, 556740 flow [2022-12-12 20:38:11,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 616 places, 9209 transitions, 556740 flow [2022-12-12 20:38:11,731 INFO L495 AbstractCegarLoop]: Abstraction has has 616 places, 9209 transitions, 556740 flow [2022-12-12 20:38:11,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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 20:38:11,731 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:38:11,731 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:38:11,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-12 20:38:11,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-12 20:38:11,936 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:38:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:38:11,936 INFO L85 PathProgramCache]: Analyzing trace with hash 140202930, now seen corresponding path program 27 times [2022-12-12 20:38:11,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:38:11,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430459966] [2022-12-12 20:38:11,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:38:11,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:38:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:38:12,063 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:38:12,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:38:12,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430459966] [2022-12-12 20:38:12,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430459966] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:38:12,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006694756] [2022-12-12 20:38:12,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 20:38:12,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:38:12,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:38:12,065 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:38:12,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-12 20:38:12,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 20:38:12,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:38:12,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-12 20:38:12,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:38:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:38:12,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:38:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:38:12,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006694756] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:38:12,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:38:12,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 9] total 13 [2022-12-12 20:38:12,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892888612] [2022-12-12 20:38:12,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:38:12,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-12 20:38:12,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:38:12,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-12 20:38:12,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-12-12 20:38:12,416 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 15 [2022-12-12 20:38:12,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 9209 transitions, 556740 flow. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:38:12,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:38:12,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 15 [2022-12-12 20:38:12,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:39:46,814 INFO L130 PetriNetUnfolder]: 11698/22696 cut-off events. [2022-12-12 20:39:46,815 INFO L131 PetriNetUnfolder]: For 4705/4705 co-relation queries the response was YES. [2022-12-12 20:39:46,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705563 conditions, 22696 events. 11698/22696 cut-off events. For 4705/4705 co-relation queries the response was YES. Maximal size of possible extension queue 1715. Compared 220185 event pairs, 0 based on Foata normal form. 3/19287 useless extension candidates. Maximal degree in co-relation 683110. Up to 22672 conditions per place. [2022-12-12 20:39:47,026 INFO L137 encePairwiseOnDemand]: 11/15 looper letters, 10528 selfloop transitions, 2358 changer transitions 201/13099 dead transitions. [2022-12-12 20:39:47,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 13099 transitions, 818309 flow [2022-12-12 20:39:47,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 20:39:47,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 20:39:47,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2022-12-12 20:39:47,027 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.780952380952381 [2022-12-12 20:39:47,027 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 602 predicate places. [2022-12-12 20:39:47,027 INFO L82 GeneralOperation]: Start removeDead. Operand has 622 places, 13099 transitions, 818309 flow [2022-12-12 20:39:47,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 622 places, 12898 transitions, 805709 flow [2022-12-12 20:39:47,466 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 12898 transitions, 805709 flow [2022-12-12 20:39:47,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:39:47,467 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:39:47,467 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:39:47,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-12-12 20:39:47,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:39:47,671 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:39:47,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:39:47,671 INFO L85 PathProgramCache]: Analyzing trace with hash -176061397, now seen corresponding path program 28 times [2022-12-12 20:39:47,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:39:47,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419746767] [2022-12-12 20:39:47,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:39:47,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:39:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:39:47,793 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:39:47,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:39:47,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419746767] [2022-12-12 20:39:47,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419746767] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:39:47,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522015520] [2022-12-12 20:39:47,794 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 20:39:47,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:39:47,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:39:47,805 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:39:47,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-12 20:39:48,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 20:39:48,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:39:48,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 20:39:48,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:39:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:39:48,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:39:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:39:48,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522015520] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:39:48,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:39:48,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-12-12 20:39:48,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133059422] [2022-12-12 20:39:48,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:39:48,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-12 20:39:48,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:39:48,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-12 20:39:48,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2022-12-12 20:39:48,264 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:39:48,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 12898 transitions, 805709 flow. Second operand has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 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 20:39:48,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:39:48,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:39:48,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:42:43,108 INFO L130 PetriNetUnfolder]: 13409/26042 cut-off events. [2022-12-12 20:42:43,108 INFO L131 PetriNetUnfolder]: For 5145/5145 co-relation queries the response was YES. [2022-12-12 20:42:43,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835694 conditions, 26042 events. 13409/26042 cut-off events. For 5145/5145 co-relation queries the response was YES. Maximal size of possible extension queue 2067. Compared 258438 event pairs, 0 based on Foata normal form. 36/22176 useless extension candidates. Maximal degree in co-relation 809905. Up to 26018 conditions per place. [2022-12-12 20:42:43,501 INFO L137 encePairwiseOnDemand]: 8/15 looper letters, 12305 selfloop transitions, 2649 changer transitions 138/15092 dead transitions. [2022-12-12 20:42:43,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 15092 transitions, 973028 flow [2022-12-12 20:42:43,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-12 20:42:43,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-12 20:42:43,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 212 transitions. [2022-12-12 20:42:43,503 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3623931623931624 [2022-12-12 20:42:43,503 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 640 predicate places. [2022-12-12 20:42:43,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 660 places, 15092 transitions, 973028 flow [2022-12-12 20:42:44,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 660 places, 14954 transitions, 964100 flow [2022-12-12 20:42:44,096 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 14954 transitions, 964100 flow [2022-12-12 20:42:44,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 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 20:42:44,096 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:42:44,096 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:42:44,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-12-12 20:42:44,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:42:44,301 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:42:44,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:42:44,301 INFO L85 PathProgramCache]: Analyzing trace with hash 997877137, now seen corresponding path program 29 times [2022-12-12 20:42:44,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:42:44,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767948579] [2022-12-12 20:42:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:42:44,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:42:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:42:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:42:44,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:42:44,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767948579] [2022-12-12 20:42:44,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767948579] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:42:44,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188627718] [2022-12-12 20:42:44,437 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 20:42:44,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:42:44,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:42:44,451 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:42:44,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-12 20:42:44,511 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-12 20:42:44,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:42:44,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 20:42:44,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:42:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:42:44,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:42:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:42:44,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188627718] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:42:44,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:42:44,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-12-12 20:42:44,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070783911] [2022-12-12 20:42:44,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:42:44,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-12 20:42:44,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:42:44,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-12 20:42:44,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2022-12-12 20:42:44,779 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:42:44,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 14954 transitions, 964100 flow. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:42:44,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:42:44,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:42:44,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:46:32,476 INFO L130 PetriNetUnfolder]: 13545/26236 cut-off events. [2022-12-12 20:46:32,476 INFO L131 PetriNetUnfolder]: For 4938/4938 co-relation queries the response was YES. [2022-12-12 20:46:32,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868134 conditions, 26236 events. 13545/26236 cut-off events. For 4938/4938 co-relation queries the response was YES. Maximal size of possible extension queue 2052. Compared 259197 event pairs, 0 based on Foata normal form. 24/22382 useless extension candidates. Maximal degree in co-relation 842220. Up to 26212 conditions per place. [2022-12-12 20:46:32,751 INFO L137 encePairwiseOnDemand]: 7/15 looper letters, 10993 selfloop transitions, 4127 changer transitions 51/15171 dead transitions. [2022-12-12 20:46:32,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 15171 transitions, 1008399 flow [2022-12-12 20:46:32,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-12 20:46:32,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-12-12 20:46:32,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 287 transitions. [2022-12-12 20:46:32,752 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3610062893081761 [2022-12-12 20:46:32,752 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 692 predicate places. [2022-12-12 20:46:32,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 712 places, 15171 transitions, 1008399 flow [2022-12-12 20:46:33,393 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 712 places, 15120 transitions, 1004997 flow [2022-12-12 20:46:33,394 INFO L495 AbstractCegarLoop]: Abstraction has has 712 places, 15120 transitions, 1004997 flow [2022-12-12 20:46:33,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:46:33,394 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:46:33,394 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:46:33,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-12-12 20:46:33,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-12 20:46:33,598 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:46:33,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:46:33,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1926919895, now seen corresponding path program 30 times [2022-12-12 20:46:33,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:46:33,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014507262] [2022-12-12 20:46:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:46:33,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:46:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:46:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:46:33,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:46:33,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014507262] [2022-12-12 20:46:33,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014507262] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:46:33,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194997207] [2022-12-12 20:46:33,740 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 20:46:33,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:46:33,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:46:33,753 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:46:33,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-12 20:46:33,815 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-12 20:46:33,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:46:33,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-12 20:46:33,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:46:33,897 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:46:33,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:46:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:46:34,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194997207] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:46:34,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:46:34,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-12-12 20:46:34,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659419646] [2022-12-12 20:46:34,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:46:34,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 20:46:34,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:46:34,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 20:46:34,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2022-12-12 20:46:34,107 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 15 [2022-12-12 20:46:34,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 15120 transitions, 1004997 flow. Second operand has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 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 20:46:34,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:46:34,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 15 [2022-12-12 20:46:34,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-12 20:48:47,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-12 20:48:47,719 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 20:48:47,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-12-12 20:48:47,751 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 20:48:47,751 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 20:48:47,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:48:47,924 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (26states, 0/15 universal loopers) in iteration 33,while PetriNetUnfolder was constructing finite prefix that currently has 589070 conditions, 17299 events (9448/17298 cut-off events. For 3288/3288 co-relation queries the response was YES. Maximal size of possible extension queue 2193. Compared 168655 event pairs, 0 based on Foata normal form. 12/16078 useless extension candidates. Maximal degree in co-relation 587497. Up to 17274 conditions per place.). [2022-12-12 20:48:47,925 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 20:48:47,925 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 20:48:47,926 INFO L445 BasicCegarLoop]: Path program histogram: [30, 2, 1] [2022-12-12 20:48:47,927 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 20:48:47,927 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 20:48:47,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 08:48:47 BasicIcfg [2022-12-12 20:48:47,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 20:48:47,929 INFO L158 Benchmark]: Toolchain (without parser) took 864350.73ms. Allocated memory was 199.2MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 161.5MB in the beginning and 973.9MB in the end (delta: -812.4MB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2022-12-12 20:48:47,930 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 199.2MB. Free memory is still 176.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 20:48:47,930 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.75ms. Allocated memory is still 199.2MB. Free memory was 161.5MB in the beginning and 150.4MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 20:48:47,930 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.78ms. Allocated memory is still 199.2MB. Free memory was 150.4MB in the beginning and 148.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 20:48:47,930 INFO L158 Benchmark]: Boogie Preprocessor took 15.13ms. Allocated memory is still 199.2MB. Free memory was 148.8MB in the beginning and 147.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 20:48:47,930 INFO L158 Benchmark]: RCFGBuilder took 400.01ms. Allocated memory is still 199.2MB. Free memory was 147.5MB in the beginning and 170.9MB in the end (delta: -23.4MB). Peak memory consumption was 14.8MB. Max. memory is 8.0GB. [2022-12-12 20:48:47,930 INFO L158 Benchmark]: TraceAbstraction took 863743.31ms. Allocated memory was 199.2MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 169.9MB in the beginning and 973.9MB in the end (delta: -804.0MB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2022-12-12 20:48:47,931 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 199.2MB. Free memory is still 176.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 167.75ms. Allocated memory is still 199.2MB. Free memory was 161.5MB in the beginning and 150.4MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.78ms. Allocated memory is still 199.2MB. Free memory was 150.4MB in the beginning and 148.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.13ms. Allocated memory is still 199.2MB. Free memory was 148.8MB in the beginning and 147.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 400.01ms. Allocated memory is still 199.2MB. Free memory was 147.5MB in the beginning and 170.9MB in the end (delta: -23.4MB). Peak memory consumption was 14.8MB. Max. memory is 8.0GB. * TraceAbstraction took 863743.31ms. Allocated memory was 199.2MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 169.9MB in the beginning and 973.9MB in the end (delta: -804.0MB). 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: 1.3s, 66 PlacesBefore, 20 PlacesAfterwards, 65 TransitionsBefore, 15 TransitionsAfterwards, 404 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 30 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 50 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 199, independent: 197, independent conditional: 197, independent unconditional: 0, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 199, independent: 197, independent conditional: 0, independent unconditional: 197, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 199, independent: 197, independent conditional: 0, independent unconditional: 197, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 199, independent: 197, independent conditional: 0, independent unconditional: 197, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 199, independent: 197, independent conditional: 0, independent unconditional: 197, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 199, independent: 197, independent conditional: 0, independent unconditional: 197, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 15, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 199, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 199, unknown conditional: 0, unknown unconditional: 199] , Statistics on independence cache: Total cache size (in pairs): 313, Positive cache size: 311, Positive conditional cache size: 0, Positive unconditional cache size: 311, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (26states, 0/15 universal loopers) in iteration 33,while PetriNetUnfolder was constructing finite prefix that currently has 589070 conditions, 17299 events (9448/17298 cut-off events. For 3288/3288 co-relation queries the response was YES. Maximal size of possible extension queue 2193. Compared 168655 event pairs, 0 based on Foata normal form. 12/16078 useless extension candidates. Maximal degree in co-relation 587497. Up to 17274 conditions per place.). - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (26states, 0/15 universal loopers) in iteration 33,while PetriNetUnfolder was constructing finite prefix that currently has 589070 conditions, 17299 events (9448/17298 cut-off events. For 3288/3288 co-relation queries the response was YES. Maximal size of possible extension queue 2193. Compared 168655 event pairs, 0 based on Foata normal form. 12/16078 useless extension candidates. Maximal degree in co-relation 587497. Up to 17274 conditions per place.). - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (26states, 0/15 universal loopers) in iteration 33,while PetriNetUnfolder was constructing finite prefix that currently has 589070 conditions, 17299 events (9448/17298 cut-off events. For 3288/3288 co-relation queries the response was YES. Maximal size of possible extension queue 2193. Compared 168655 event pairs, 0 based on Foata normal form. 12/16078 useless extension candidates. Maximal degree in co-relation 587497. Up to 17274 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 87 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 3.6s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 863.6s, OverallIterations: 33, TraceHistogramMax: 4, PathProgramHistogramMax: 30, EmptinessCheckTime: 0.0s, AutomataDifference: 840.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4662 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4662 mSDsluCounter, 472 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 332 mSDsCounter, 1188 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14701 IncrementalHoareTripleChecker+Invalid, 15889 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1188 mSolverCounterUnsat, 140 mSDtfsCounter, 14701 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2376 GetRequests, 1214 SyntacticMatches, 65 SemanticMatches, 1097 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14593 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1004997occurred in iteration=32, InterpolantAutomatonStates: 735, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.6s AutomataMinimizationTime, 32 MinimizatonAttempts, 65024 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 9.3s InterpolantComputationTime, 1133 NumberOfCodeBlocks, 1125 NumberOfCodeBlocksAsserted, 104 NumberOfCheckSat, 1578 ConstructedInterpolants, 0 QuantifiedInterpolants, 8514 SizeOfPredicates, 191 NumberOfNonLiveVariables, 3827 ConjunctsInSsa, 353 ConjunctsInUnsatCore, 94 InterpolantComputations, 4 PerfectInterpolantSequences, 235/858 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown