/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 21:55:22,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 21:55:22,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 21:55:22,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 21:55:22,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 21:55:22,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 21:55:22,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 21:55:22,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 21:55:22,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 21:55:22,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 21:55:22,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 21:55:22,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 21:55:22,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 21:55:22,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 21:55:22,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 21:55:22,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 21:55:22,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 21:55:22,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 21:55:22,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 21:55:22,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 21:55:22,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 21:55:22,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 21:55:22,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 21:55:22,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 21:55:22,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 21:55:22,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 21:55:22,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 21:55:22,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 21:55:22,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 21:55:22,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 21:55:22,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 21:55:22,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 21:55:22,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 21:55:22,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 21:55:22,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 21:55:22,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 21:55:22,779 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-VariableLbe.epf [2023-01-27 21:55:22,805 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 21:55:22,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 21:55:22,806 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 21:55:22,807 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 21:55:22,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 21:55:22,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 21:55:22,808 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 21:55:22,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 21:55:22,808 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 21:55:22,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 21:55:22,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 21:55:22,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 21:55:22,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 21:55:22,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 21:55:22,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 21:55:22,810 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 21:55:22,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 21:55:22,810 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 21:55:22,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 21:55:22,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 21:55:22,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 21:55:22,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 21:55:22,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 21:55:22,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:55:22,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 21:55:22,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 21:55:22,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 21:55:22,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 21:55:22,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 21:55:22,812 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 21:55:22,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 21:55:22,812 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 21:55:23,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 21:55:23,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 21:55:23,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 21:55:23,054 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 21:55:23,055 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 21:55:23,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2023-01-27 21:55:24,142 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 21:55:24,324 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 21:55:24,324 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2023-01-27 21:55:24,331 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93d2b3459/b2fbba94de5748d4ae9daabdb0c52dbd/FLAGa861ae94b [2023-01-27 21:55:24,348 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93d2b3459/b2fbba94de5748d4ae9daabdb0c52dbd [2023-01-27 21:55:24,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 21:55:24,351 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 21:55:24,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 21:55:24,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 21:55:24,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 21:55:24,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:55:24" (1/1) ... [2023-01-27 21:55:24,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b1bc129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:24, skipping insertion in model container [2023-01-27 21:55:24,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:55:24" (1/1) ... [2023-01-27 21:55:24,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 21:55:24,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 21:55:24,569 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c[2599,2612] [2023-01-27 21:55:24,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:55:24,594 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 21:55:24,629 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c[2599,2612] [2023-01-27 21:55:24,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:55:24,643 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:55:24,644 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:55:24,651 INFO L208 MainTranslator]: Completed translation [2023-01-27 21:55:24,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:24 WrapperNode [2023-01-27 21:55:24,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 21:55:24,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 21:55:24,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 21:55:24,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 21:55:24,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:24" (1/1) ... [2023-01-27 21:55:24,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:24" (1/1) ... [2023-01-27 21:55:24,698 INFO L138 Inliner]: procedures = 25, calls = 52, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 275 [2023-01-27 21:55:24,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 21:55:24,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 21:55:24,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 21:55:24,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 21:55:24,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:24" (1/1) ... [2023-01-27 21:55:24,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:24" (1/1) ... [2023-01-27 21:55:24,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:24" (1/1) ... [2023-01-27 21:55:24,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:24" (1/1) ... [2023-01-27 21:55:24,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:24" (1/1) ... [2023-01-27 21:55:24,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:24" (1/1) ... [2023-01-27 21:55:24,724 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:24" (1/1) ... [2023-01-27 21:55:24,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:24" (1/1) ... [2023-01-27 21:55:24,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 21:55:24,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 21:55:24,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 21:55:24,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 21:55:24,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:24" (1/1) ... [2023-01-27 21:55:24,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:55:24,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:55:24,756 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) [2023-01-27 21:55:24,786 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 [2023-01-27 21:55:24,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 21:55:24,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 21:55:24,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 21:55:24,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 21:55:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 21:55:24,800 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 21:55:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 21:55:24,800 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 21:55:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 21:55:24,800 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 21:55:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 21:55:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 21:55:24,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 21:55:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 21:55:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 21:55:24,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 21:55:24,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 21:55:24,802 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 21:55:24,953 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 21:55:24,958 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 21:55:25,311 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 21:55:25,568 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 21:55:25,568 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-01-27 21:55:25,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:55:25 BoogieIcfgContainer [2023-01-27 21:55:25,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 21:55:25,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 21:55:25,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 21:55:25,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 21:55:25,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 09:55:24" (1/3) ... [2023-01-27 21:55:25,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113844a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:55:25, skipping insertion in model container [2023-01-27 21:55:25,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:24" (2/3) ... [2023-01-27 21:55:25,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113844a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:55:25, skipping insertion in model container [2023-01-27 21:55:25,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:55:25" (3/3) ... [2023-01-27 21:55:25,578 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2023-01-27 21:55:25,591 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 21:55:25,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 21:55:25,592 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 21:55:25,672 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 21:55:25,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 180 transitions, 384 flow [2023-01-27 21:55:25,794 INFO L130 PetriNetUnfolder]: 16/177 cut-off events. [2023-01-27 21:55:25,794 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 21:55:25,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 177 events. 16/177 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 112 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-01-27 21:55:25,800 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 180 transitions, 384 flow [2023-01-27 21:55:25,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 167 transitions, 352 flow [2023-01-27 21:55:25,809 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 21:55:25,821 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 167 transitions, 352 flow [2023-01-27 21:55:25,823 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 167 transitions, 352 flow [2023-01-27 21:55:25,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 167 transitions, 352 flow [2023-01-27 21:55:25,854 INFO L130 PetriNetUnfolder]: 16/167 cut-off events. [2023-01-27 21:55:25,854 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 21:55:25,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 167 events. 16/167 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 110 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-01-27 21:55:25,862 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-01-27 21:55:31,699 INFO L134 LiptonReduction]: Checked pairs total: 1529 [2023-01-27 21:55:31,699 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-01-27 21:55:31,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 21:55:31,726 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;@123c06fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 21:55:31,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 21:55:31,741 INFO L130 PetriNetUnfolder]: 5/25 cut-off events. [2023-01-27 21:55:31,742 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 21:55:31,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:55:31,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:55:31,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:55:31,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:55:31,748 INFO L85 PathProgramCache]: Analyzing trace with hash -118065051, now seen corresponding path program 1 times [2023-01-27 21:55:31,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:55:31,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353789871] [2023-01-27 21:55:31,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:55:31,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:55:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:55:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:55:32,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:55:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353789871] [2023-01-27 21:55:32,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353789871] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:55:32,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:55:32,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 21:55:32,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589428543] [2023-01-27 21:55:32,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:55:32,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:55:32,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:55:32,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:55:32,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:55:32,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 353 [2023-01-27 21:55:32,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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) [2023-01-27 21:55:32,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:55:32,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 353 [2023-01-27 21:55:32,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:55:32,490 INFO L130 PetriNetUnfolder]: 343/476 cut-off events. [2023-01-27 21:55:32,491 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-01-27 21:55:32,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 997 conditions, 476 events. 343/476 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1477 event pairs, 133 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 765. Up to 370 conditions per place. [2023-01-27 21:55:32,499 INFO L137 encePairwiseOnDemand]: 349/353 looper letters, 31 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2023-01-27 21:55:32,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 164 flow [2023-01-27 21:55:32,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:55:32,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:55:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 607 transitions. [2023-01-27 21:55:32,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42988668555240794 [2023-01-27 21:55:32,521 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 607 transitions. [2023-01-27 21:55:32,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 607 transitions. [2023-01-27 21:55:32,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:55:32,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 607 transitions. [2023-01-27 21:55:32,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.75) internal successors, (607), 4 states have internal predecessors, (607), 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) [2023-01-27 21:55:32,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 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) [2023-01-27 21:55:32,539 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 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) [2023-01-27 21:55:32,540 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 70 flow. Second operand 4 states and 607 transitions. [2023-01-27 21:55:32,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 164 flow [2023-01-27 21:55:32,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 36 transitions, 148 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 21:55:32,545 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 72 flow [2023-01-27 21:55:32,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-01-27 21:55:32,550 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2023-01-27 21:55:32,551 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 72 flow [2023-01-27 21:55:32,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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) [2023-01-27 21:55:32,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:55:32,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:55:32,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 21:55:32,552 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:55:32,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:55:32,553 INFO L85 PathProgramCache]: Analyzing trace with hash -628194304, now seen corresponding path program 1 times [2023-01-27 21:55:32,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:55:32,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847908053] [2023-01-27 21:55:32,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:55:32,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:55:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:55:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:55:32,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:55:32,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847908053] [2023-01-27 21:55:32,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847908053] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:55:32,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:55:32,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:55:32,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165101107] [2023-01-27 21:55:32,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:55:32,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:55:32,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:55:32,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:55:32,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:55:32,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 353 [2023-01-27 21:55:32,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 72 flow. Second operand has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 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) [2023-01-27 21:55:32,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:55:32,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 353 [2023-01-27 21:55:32,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:55:32,964 INFO L130 PetriNetUnfolder]: 344/481 cut-off events. [2023-01-27 21:55:32,964 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-01-27 21:55:32,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 481 events. 344/481 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1492 event pairs, 133 based on Foata normal form. 3/317 useless extension candidates. Maximal degree in co-relation 323. Up to 373 conditions per place. [2023-01-27 21:55:32,968 INFO L137 encePairwiseOnDemand]: 347/353 looper letters, 31 selfloop transitions, 5 changer transitions 3/41 dead transitions. [2023-01-27 21:55:32,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 180 flow [2023-01-27 21:55:32,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:55:32,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:55:32,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 767 transitions. [2023-01-27 21:55:32,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362134088762984 [2023-01-27 21:55:32,971 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 767 transitions. [2023-01-27 21:55:32,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 767 transitions. [2023-01-27 21:55:32,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:55:32,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 767 transitions. [2023-01-27 21:55:32,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 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) [2023-01-27 21:55:32,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 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) [2023-01-27 21:55:32,978 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 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) [2023-01-27 21:55:32,978 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 72 flow. Second operand 6 states and 767 transitions. [2023-01-27 21:55:32,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 180 flow [2023-01-27 21:55:32,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 174 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 21:55:32,981 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 96 flow [2023-01-27 21:55:32,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-01-27 21:55:32,982 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2023-01-27 21:55:32,982 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 96 flow [2023-01-27 21:55:32,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 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) [2023-01-27 21:55:32,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:55:32,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:55:32,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 21:55:32,983 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:55:32,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:55:32,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1446722701, now seen corresponding path program 1 times [2023-01-27 21:55:32,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:55:32,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838295235] [2023-01-27 21:55:32,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:55:32,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:55:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:55:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:55:33,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:55:33,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838295235] [2023-01-27 21:55:33,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838295235] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:55:33,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159628620] [2023-01-27 21:55:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:55:33,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:55:33,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:55:33,089 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) [2023-01-27 21:55:33,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 21:55:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:55:33,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 21:55:33,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:55:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:55:33,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:55:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:55:33,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159628620] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 21:55:33,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 21:55:33,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-01-27 21:55:33,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712119330] [2023-01-27 21:55:33,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:55:33,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 21:55:33,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:55:33,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 21:55:33,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-27 21:55:33,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 353 [2023-01-27 21:55:33,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 129.4) internal successors, (647), 5 states have internal predecessors, (647), 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) [2023-01-27 21:55:33,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:55:33,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 353 [2023-01-27 21:55:33,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:55:33,452 INFO L130 PetriNetUnfolder]: 312/453 cut-off events. [2023-01-27 21:55:33,452 INFO L131 PetriNetUnfolder]: For 114/150 co-relation queries the response was YES. [2023-01-27 21:55:33,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 453 events. 312/453 cut-off events. For 114/150 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1498 event pairs, 134 based on Foata normal form. 36/382 useless extension candidates. Maximal degree in co-relation 1003. Up to 352 conditions per place. [2023-01-27 21:55:33,455 INFO L137 encePairwiseOnDemand]: 348/353 looper letters, 34 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-01-27 21:55:33,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 202 flow [2023-01-27 21:55:33,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 21:55:33,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 21:55:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 661 transitions. [2023-01-27 21:55:33,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3745042492917847 [2023-01-27 21:55:33,458 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 661 transitions. [2023-01-27 21:55:33,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 661 transitions. [2023-01-27 21:55:33,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:55:33,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 661 transitions. [2023-01-27 21:55:33,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 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) [2023-01-27 21:55:33,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 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) [2023-01-27 21:55:33,464 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 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) [2023-01-27 21:55:33,464 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 96 flow. Second operand 5 states and 661 transitions. [2023-01-27 21:55:33,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 202 flow [2023-01-27 21:55:33,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 196 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-27 21:55:33,467 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 106 flow [2023-01-27 21:55:33,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-01-27 21:55:33,468 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2023-01-27 21:55:33,468 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 106 flow [2023-01-27 21:55:33,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.4) internal successors, (647), 5 states have internal predecessors, (647), 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) [2023-01-27 21:55:33,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:55:33,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:55:33,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 21:55:33,674 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 [2023-01-27 21:55:33,675 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:55:33,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:55:33,675 INFO L85 PathProgramCache]: Analyzing trace with hash 768134593, now seen corresponding path program 1 times [2023-01-27 21:55:33,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:55:33,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644223321] [2023-01-27 21:55:33,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:55:33,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:55:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:55:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:55:35,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:55:35,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644223321] [2023-01-27 21:55:35,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644223321] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:55:35,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133091738] [2023-01-27 21:55:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:55:35,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:55:35,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:55:35,646 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) [2023-01-27 21:55:35,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 21:55:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:55:35,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-27 21:55:35,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:55:36,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 21:55:36,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:55:36,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:55:36,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:55:36,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:55:36,521 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 21:55:36,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-01-27 21:55:36,751 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:55:36,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 81 [2023-01-27 21:55:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:55:36,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:55:37,602 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:55:37,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 76 [2023-01-27 21:55:37,811 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:55:37,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 9568246 treesize of output 8519738 [2023-01-27 21:55:38,755 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:55:38,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2070 treesize of output 1966 [2023-01-27 21:55:38,858 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:55:38,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1910 treesize of output 1646 [2023-01-27 21:55:38,922 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:55:38,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1590 treesize of output 1214 [2023-01-27 21:56:50,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:56:50,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133091738] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:56:50,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:56:50,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2023-01-27 21:56:50,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766942391] [2023-01-27 21:56:50,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:56:50,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-01-27 21:56:50,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:56:50,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-01-27 21:56:50,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1453, Unknown=22, NotChecked=0, Total=1640 [2023-01-27 21:56:50,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-01-27 21:56:50,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 106 flow. Second operand has 41 states, 41 states have (on average 83.48780487804878) internal successors, (3423), 41 states have internal predecessors, (3423), 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) [2023-01-27 21:56:50,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:56:50,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-01-27 21:56:50,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:56:54,474 INFO L130 PetriNetUnfolder]: 1358/2022 cut-off events. [2023-01-27 21:56:54,474 INFO L131 PetriNetUnfolder]: For 729/729 co-relation queries the response was YES. [2023-01-27 21:56:54,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5106 conditions, 2022 events. 1358/2022 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8523 event pairs, 124 based on Foata normal form. 2/1675 useless extension candidates. Maximal degree in co-relation 3147. Up to 853 conditions per place. [2023-01-27 21:56:54,486 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 195 selfloop transitions, 89 changer transitions 4/288 dead transitions. [2023-01-27 21:56:54,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 288 transitions, 1407 flow [2023-01-27 21:56:54,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-27 21:56:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-01-27 21:56:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3156 transitions. [2023-01-27 21:56:54,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25544314042897615 [2023-01-27 21:56:54,495 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3156 transitions. [2023-01-27 21:56:54,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3156 transitions. [2023-01-27 21:56:54,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:56:54,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3156 transitions. [2023-01-27 21:56:54,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 90.17142857142858) internal successors, (3156), 35 states have internal predecessors, (3156), 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) [2023-01-27 21:56:54,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 353.0) internal successors, (12708), 36 states have internal predecessors, (12708), 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) [2023-01-27 21:56:54,519 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 353.0) internal successors, (12708), 36 states have internal predecessors, (12708), 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) [2023-01-27 21:56:54,519 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 106 flow. Second operand 35 states and 3156 transitions. [2023-01-27 21:56:54,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 288 transitions, 1407 flow [2023-01-27 21:56:54,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 288 transitions, 1383 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-27 21:56:54,527 INFO L231 Difference]: Finished difference. Result has 77 places, 115 transitions, 618 flow [2023-01-27 21:56:54,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=618, PETRI_PLACES=77, PETRI_TRANSITIONS=115} [2023-01-27 21:56:54,528 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2023-01-27 21:56:54,528 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 115 transitions, 618 flow [2023-01-27 21:56:54,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 83.48780487804878) internal successors, (3423), 41 states have internal predecessors, (3423), 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) [2023-01-27 21:56:54,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:56:54,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:56:54,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-27 21:56:54,735 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 [2023-01-27 21:56:54,735 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:56:54,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:56:54,736 INFO L85 PathProgramCache]: Analyzing trace with hash -644630665, now seen corresponding path program 2 times [2023-01-27 21:56:54,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:56:54,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290618558] [2023-01-27 21:56:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:56:54,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:56:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:56:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:56:55,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:56:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290618558] [2023-01-27 21:56:55,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290618558] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:56:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957247361] [2023-01-27 21:56:55,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:56:55,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:56:55,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:56:55,853 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) [2023-01-27 21:56:55,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 21:56:55,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:56:55,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:56:55,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 60 conjunts are in the unsatisfiable core [2023-01-27 21:56:55,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:56:56,362 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-01-27 21:56:56,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-01-27 21:56:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:56:56,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:56:56,523 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:56:56,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-01-27 21:56:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:56:56,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957247361] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:56:56,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:56:56,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 32 [2023-01-27 21:56:56,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646961106] [2023-01-27 21:56:56,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:56:56,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-27 21:56:56,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:56:56,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-27 21:56:56,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2023-01-27 21:56:56,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 353 [2023-01-27 21:56:56,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 115 transitions, 618 flow. Second operand has 34 states, 34 states have (on average 86.79411764705883) internal successors, (2951), 34 states have internal predecessors, (2951), 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) [2023-01-27 21:56:56,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:56:56,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 353 [2023-01-27 21:56:56,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:56:59,928 INFO L130 PetriNetUnfolder]: 2763/4217 cut-off events. [2023-01-27 21:56:59,928 INFO L131 PetriNetUnfolder]: For 5950/5950 co-relation queries the response was YES. [2023-01-27 21:56:59,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14740 conditions, 4217 events. 2763/4217 cut-off events. For 5950/5950 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 21647 event pairs, 162 based on Foata normal form. 46/4257 useless extension candidates. Maximal degree in co-relation 13956. Up to 1788 conditions per place. [2023-01-27 21:56:59,949 INFO L137 encePairwiseOnDemand]: 336/353 looper letters, 238 selfloop transitions, 227 changer transitions 23/488 dead transitions. [2023-01-27 21:56:59,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 488 transitions, 3349 flow [2023-01-27 21:56:59,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-01-27 21:56:59,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-01-27 21:56:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 4304 transitions. [2023-01-27 21:56:59,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25941775661503225 [2023-01-27 21:56:59,962 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 4304 transitions. [2023-01-27 21:56:59,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 4304 transitions. [2023-01-27 21:56:59,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:56:59,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 4304 transitions. [2023-01-27 21:56:59,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 91.57446808510639) internal successors, (4304), 47 states have internal predecessors, (4304), 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) [2023-01-27 21:56:59,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 353.0) internal successors, (16944), 48 states have internal predecessors, (16944), 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) [2023-01-27 21:56:59,990 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 353.0) internal successors, (16944), 48 states have internal predecessors, (16944), 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) [2023-01-27 21:56:59,990 INFO L175 Difference]: Start difference. First operand has 77 places, 115 transitions, 618 flow. Second operand 47 states and 4304 transitions. [2023-01-27 21:56:59,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 488 transitions, 3349 flow [2023-01-27 21:57:00,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 488 transitions, 3210 flow, removed 42 selfloop flow, removed 6 redundant places. [2023-01-27 21:57:00,014 INFO L231 Difference]: Finished difference. Result has 138 places, 321 transitions, 2430 flow [2023-01-27 21:57:00,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=2430, PETRI_PLACES=138, PETRI_TRANSITIONS=321} [2023-01-27 21:57:00,015 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2023-01-27 21:57:00,015 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 321 transitions, 2430 flow [2023-01-27 21:57:00,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 86.79411764705883) internal successors, (2951), 34 states have internal predecessors, (2951), 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) [2023-01-27 21:57:00,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:57:00,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:57:00,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 21:57:00,221 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 [2023-01-27 21:57:00,222 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:57:00,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:57:00,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1317014283, now seen corresponding path program 3 times [2023-01-27 21:57:00,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:57:00,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088070941] [2023-01-27 21:57:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:57:00,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:57:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:57:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:57:01,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:57:01,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088070941] [2023-01-27 21:57:01,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088070941] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:57:01,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095138073] [2023-01-27 21:57:01,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 21:57:01,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:57:01,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:57:01,279 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) [2023-01-27 21:57:01,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 21:57:01,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 21:57:01,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:57:01,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 58 conjunts are in the unsatisfiable core [2023-01-27 21:57:01,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:57:01,772 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:57:01,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2023-01-27 21:57:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:57:01,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:57:01,883 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:57:01,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-01-27 21:57:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:57:02,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095138073] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:57:02,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:57:02,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2023-01-27 21:57:02,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224141019] [2023-01-27 21:57:02,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:57:02,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-27 21:57:02,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:57:02,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-27 21:57:02,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2023-01-27 21:57:02,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 353 [2023-01-27 21:57:02,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 321 transitions, 2430 flow. Second operand has 31 states, 31 states have (on average 86.87096774193549) internal successors, (2693), 31 states have internal predecessors, (2693), 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) [2023-01-27 21:57:02,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:57:02,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 353 [2023-01-27 21:57:02,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:57:03,531 INFO L130 PetriNetUnfolder]: 3091/4725 cut-off events. [2023-01-27 21:57:03,531 INFO L131 PetriNetUnfolder]: For 20115/20115 co-relation queries the response was YES. [2023-01-27 21:57:03,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22519 conditions, 4725 events. 3091/4725 cut-off events. For 20115/20115 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 24498 event pairs, 512 based on Foata normal form. 1/4717 useless extension candidates. Maximal degree in co-relation 22443. Up to 3936 conditions per place. [2023-01-27 21:57:03,568 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 280 selfloop transitions, 178 changer transitions 1/459 dead transitions. [2023-01-27 21:57:03,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 459 transitions, 4361 flow [2023-01-27 21:57:03,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 21:57:03,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 21:57:03,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1464 transitions. [2023-01-27 21:57:03,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25920679886685555 [2023-01-27 21:57:03,572 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1464 transitions. [2023-01-27 21:57:03,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1464 transitions. [2023-01-27 21:57:03,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:57:03,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1464 transitions. [2023-01-27 21:57:03,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 91.5) internal successors, (1464), 16 states have internal predecessors, (1464), 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) [2023-01-27 21:57:03,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 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) [2023-01-27 21:57:03,582 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 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) [2023-01-27 21:57:03,582 INFO L175 Difference]: Start difference. First operand has 138 places, 321 transitions, 2430 flow. Second operand 16 states and 1464 transitions. [2023-01-27 21:57:03,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 459 transitions, 4361 flow [2023-01-27 21:57:03,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 459 transitions, 4023 flow, removed 158 selfloop flow, removed 8 redundant places. [2023-01-27 21:57:03,661 INFO L231 Difference]: Finished difference. Result has 151 places, 403 transitions, 3362 flow [2023-01-27 21:57:03,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3362, PETRI_PLACES=151, PETRI_TRANSITIONS=403} [2023-01-27 21:57:03,662 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2023-01-27 21:57:03,662 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 403 transitions, 3362 flow [2023-01-27 21:57:03,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 86.87096774193549) internal successors, (2693), 31 states have internal predecessors, (2693), 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) [2023-01-27 21:57:03,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:57:03,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:57:03,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 21:57:03,868 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 [2023-01-27 21:57:03,868 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:57:03,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:57:03,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1906045491, now seen corresponding path program 4 times [2023-01-27 21:57:03,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:57:03,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500336785] [2023-01-27 21:57:03,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:57:03,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:57:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:57:05,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:57:05,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:57:05,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500336785] [2023-01-27 21:57:05,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500336785] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:57:05,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609639282] [2023-01-27 21:57:05,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 21:57:05,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:57:05,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:57:05,025 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) [2023-01-27 21:57:05,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 21:57:05,117 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 21:57:05,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:57:05,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-27 21:57:05,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:57:05,414 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:57:05,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2023-01-27 21:57:05,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:57:05,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:57:05,509 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:57:05,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-01-27 21:57:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:57:05,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609639282] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:57:05,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:57:05,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2023-01-27 21:57:05,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245641907] [2023-01-27 21:57:05,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:57:05,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-27 21:57:05,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:57:05,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-27 21:57:05,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-01-27 21:57:05,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-01-27 21:57:05,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 403 transitions, 3362 flow. Second operand has 31 states, 31 states have (on average 83.83870967741936) internal successors, (2599), 31 states have internal predecessors, (2599), 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) [2023-01-27 21:57:05,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:57:05,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-01-27 21:57:05,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:57:07,219 INFO L130 PetriNetUnfolder]: 3211/4940 cut-off events. [2023-01-27 21:57:07,219 INFO L131 PetriNetUnfolder]: For 25595/25595 co-relation queries the response was YES. [2023-01-27 21:57:07,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24901 conditions, 4940 events. 3211/4940 cut-off events. For 25595/25595 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 26145 event pairs, 523 based on Foata normal form. 1/4933 useless extension candidates. Maximal degree in co-relation 24772. Up to 4245 conditions per place. [2023-01-27 21:57:07,254 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 281 selfloop transitions, 239 changer transitions 6/526 dead transitions. [2023-01-27 21:57:07,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 526 transitions, 5497 flow [2023-01-27 21:57:07,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 21:57:07,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 21:57:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1487 transitions. [2023-01-27 21:57:07,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24779203466088986 [2023-01-27 21:57:07,258 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1487 transitions. [2023-01-27 21:57:07,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1487 transitions. [2023-01-27 21:57:07,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:57:07,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1487 transitions. [2023-01-27 21:57:07,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 87.47058823529412) internal successors, (1487), 17 states have internal predecessors, (1487), 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) [2023-01-27 21:57:07,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 353.0) internal successors, (6354), 18 states have internal predecessors, (6354), 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) [2023-01-27 21:57:07,266 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 353.0) internal successors, (6354), 18 states have internal predecessors, (6354), 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) [2023-01-27 21:57:07,266 INFO L175 Difference]: Start difference. First operand has 151 places, 403 transitions, 3362 flow. Second operand 17 states and 1487 transitions. [2023-01-27 21:57:07,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 526 transitions, 5497 flow [2023-01-27 21:57:07,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 526 transitions, 5368 flow, removed 27 selfloop flow, removed 5 redundant places. [2023-01-27 21:57:07,353 INFO L231 Difference]: Finished difference. Result has 167 places, 489 transitions, 4810 flow [2023-01-27 21:57:07,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=3253, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4810, PETRI_PLACES=167, PETRI_TRANSITIONS=489} [2023-01-27 21:57:07,354 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2023-01-27 21:57:07,354 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 489 transitions, 4810 flow [2023-01-27 21:57:07,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 83.83870967741936) internal successors, (2599), 31 states have internal predecessors, (2599), 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) [2023-01-27 21:57:07,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:57:07,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:57:07,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 21:57:07,560 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 [2023-01-27 21:57:07,560 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:57:07,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:57:07,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1960108977, now seen corresponding path program 5 times [2023-01-27 21:57:07,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:57:07,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014961271] [2023-01-27 21:57:07,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:57:07,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:57:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:57:08,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:57:08,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:57:08,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014961271] [2023-01-27 21:57:08,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014961271] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:57:08,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769618198] [2023-01-27 21:57:08,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 21:57:08,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:57:08,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:57:08,785 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) [2023-01-27 21:57:08,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 21:57:08,895 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:57:08,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:57:08,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 57 conjunts are in the unsatisfiable core [2023-01-27 21:57:08,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:57:09,273 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:57:09,289 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2023-01-27 21:57:09,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 25 [2023-01-27 21:57:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:57:09,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:57:09,441 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:57:09,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-01-27 21:57:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:57:09,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769618198] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:57:09,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:57:09,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 28 [2023-01-27 21:57:09,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683687188] [2023-01-27 21:57:09,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:57:09,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 21:57:09,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:57:09,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 21:57:09,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2023-01-27 21:57:09,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-01-27 21:57:09,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 489 transitions, 4810 flow. Second operand has 30 states, 30 states have (on average 84.03333333333333) internal successors, (2521), 30 states have internal predecessors, (2521), 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) [2023-01-27 21:57:09,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:57:09,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-01-27 21:57:09,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:57:13,038 INFO L130 PetriNetUnfolder]: 4979/7630 cut-off events. [2023-01-27 21:57:13,038 INFO L131 PetriNetUnfolder]: For 46355/46355 co-relation queries the response was YES. [2023-01-27 21:57:13,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40374 conditions, 7630 events. 4979/7630 cut-off events. For 46355/46355 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 43784 event pairs, 508 based on Foata normal form. 5/7627 useless extension candidates. Maximal degree in co-relation 40161. Up to 2317 conditions per place. [2023-01-27 21:57:13,093 INFO L137 encePairwiseOnDemand]: 336/353 looper letters, 345 selfloop transitions, 531 changer transitions 17/893 dead transitions. [2023-01-27 21:57:13,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 893 transitions, 9731 flow [2023-01-27 21:57:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-01-27 21:57:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-01-27 21:57:13,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3842 transitions. [2023-01-27 21:57:13,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25311285328414257 [2023-01-27 21:57:13,099 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3842 transitions. [2023-01-27 21:57:13,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3842 transitions. [2023-01-27 21:57:13,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:57:13,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3842 transitions. [2023-01-27 21:57:13,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 89.34883720930233) internal successors, (3842), 43 states have internal predecessors, (3842), 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) [2023-01-27 21:57:13,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 353.0) internal successors, (15532), 44 states have internal predecessors, (15532), 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) [2023-01-27 21:57:13,119 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 353.0) internal successors, (15532), 44 states have internal predecessors, (15532), 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) [2023-01-27 21:57:13,119 INFO L175 Difference]: Start difference. First operand has 167 places, 489 transitions, 4810 flow. Second operand 43 states and 3842 transitions. [2023-01-27 21:57:13,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 893 transitions, 9731 flow [2023-01-27 21:57:13,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 893 transitions, 9446 flow, removed 111 selfloop flow, removed 5 redundant places. [2023-01-27 21:57:13,323 INFO L231 Difference]: Finished difference. Result has 220 places, 681 transitions, 8172 flow [2023-01-27 21:57:13,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=4657, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=8172, PETRI_PLACES=220, PETRI_TRANSITIONS=681} [2023-01-27 21:57:13,324 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2023-01-27 21:57:13,324 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 681 transitions, 8172 flow [2023-01-27 21:57:13,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 84.03333333333333) internal successors, (2521), 30 states have internal predecessors, (2521), 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) [2023-01-27 21:57:13,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:57:13,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:57:13,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 21:57:13,532 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 [2023-01-27 21:57:13,533 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:57:13,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:57:13,533 INFO L85 PathProgramCache]: Analyzing trace with hash -555652735, now seen corresponding path program 6 times [2023-01-27 21:57:13,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:57:13,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888125687] [2023-01-27 21:57:13,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:57:13,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:57:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:57:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:57:14,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:57:14,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888125687] [2023-01-27 21:57:14,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888125687] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:57:14,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601391251] [2023-01-27 21:57:14,462 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 21:57:14,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:57:14,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:57:14,465 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) [2023-01-27 21:57:14,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 21:57:14,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 21:57:14,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:57:14,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 60 conjunts are in the unsatisfiable core [2023-01-27 21:57:14,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:57:15,137 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-01-27 21:57:15,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-01-27 21:57:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:57:15,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:57:15,275 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:57:15,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-01-27 21:57:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:57:15,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601391251] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:57:15,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:57:15,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 32 [2023-01-27 21:57:15,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771887976] [2023-01-27 21:57:15,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:57:15,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-27 21:57:15,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:57:15,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-27 21:57:15,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2023-01-27 21:57:15,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 353 [2023-01-27 21:57:15,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 681 transitions, 8172 flow. Second operand has 34 states, 34 states have (on average 86.82352941176471) internal successors, (2952), 34 states have internal predecessors, (2952), 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) [2023-01-27 21:57:15,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:57:15,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 353 [2023-01-27 21:57:15,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:57:19,375 INFO L130 PetriNetUnfolder]: 7403/11343 cut-off events. [2023-01-27 21:57:19,375 INFO L131 PetriNetUnfolder]: For 79052/79052 co-relation queries the response was YES. [2023-01-27 21:57:19,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66375 conditions, 11343 events. 7403/11343 cut-off events. For 79052/79052 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 69831 event pairs, 394 based on Foata normal form. 2/11343 useless extension candidates. Maximal degree in co-relation 66177. Up to 4430 conditions per place. [2023-01-27 21:57:19,466 INFO L137 encePairwiseOnDemand]: 335/353 looper letters, 516 selfloop transitions, 735 changer transitions 10/1261 dead transitions. [2023-01-27 21:57:19,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 1261 transitions, 16505 flow [2023-01-27 21:57:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-27 21:57:19,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-01-27 21:57:19,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3607 transitions. [2023-01-27 21:57:19,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26200334132345465 [2023-01-27 21:57:19,472 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3607 transitions. [2023-01-27 21:57:19,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3607 transitions. [2023-01-27 21:57:19,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:57:19,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3607 transitions. [2023-01-27 21:57:19,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 92.48717948717949) internal successors, (3607), 39 states have internal predecessors, (3607), 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) [2023-01-27 21:57:19,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 353.0) internal successors, (14120), 40 states have internal predecessors, (14120), 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) [2023-01-27 21:57:19,486 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 353.0) internal successors, (14120), 40 states have internal predecessors, (14120), 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) [2023-01-27 21:57:19,487 INFO L175 Difference]: Start difference. First operand has 220 places, 681 transitions, 8172 flow. Second operand 39 states and 3607 transitions. [2023-01-27 21:57:19,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 1261 transitions, 16505 flow [2023-01-27 21:57:20,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 1261 transitions, 15629 flow, removed 331 selfloop flow, removed 14 redundant places. [2023-01-27 21:57:20,111 INFO L231 Difference]: Finished difference. Result has 266 places, 1071 transitions, 14974 flow [2023-01-27 21:57:20,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=7650, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=408, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14974, PETRI_PLACES=266, PETRI_TRANSITIONS=1071} [2023-01-27 21:57:20,112 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2023-01-27 21:57:20,112 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 1071 transitions, 14974 flow [2023-01-27 21:57:20,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 86.82352941176471) internal successors, (2952), 34 states have internal predecessors, (2952), 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) [2023-01-27 21:57:20,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:57:20,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:57:20,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-27 21:57:20,317 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 [2023-01-27 21:57:20,317 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:57:20,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:57:20,317 INFO L85 PathProgramCache]: Analyzing trace with hash 539869495, now seen corresponding path program 7 times [2023-01-27 21:57:20,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:57:20,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309080568] [2023-01-27 21:57:20,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:57:20,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:57:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:57:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:57:21,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:57:21,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309080568] [2023-01-27 21:57:21,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309080568] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:57:21,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158237465] [2023-01-27 21:57:21,706 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 21:57:21,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:57:21,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:57:21,709 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) [2023-01-27 21:57:21,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 21:57:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:57:21,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-27 21:57:21,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:57:22,107 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 21:57:22,119 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2023-01-27 21:57:22,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 25 [2023-01-27 21:57:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:57:22,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:57:22,195 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:57:22,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-01-27 21:57:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:57:22,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158237465] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:57:22,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:57:22,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 28 [2023-01-27 21:57:22,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377757821] [2023-01-27 21:57:22,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:57:22,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 21:57:22,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:57:22,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 21:57:22,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2023-01-27 21:57:22,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-01-27 21:57:22,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 1071 transitions, 14974 flow. Second operand has 30 states, 30 states have (on average 84.0) internal successors, (2520), 30 states have internal predecessors, (2520), 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) [2023-01-27 21:57:22,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:57:22,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-01-27 21:57:22,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:57:26,998 INFO L130 PetriNetUnfolder]: 7704/11866 cut-off events. [2023-01-27 21:57:26,999 INFO L131 PetriNetUnfolder]: For 127931/127931 co-relation queries the response was YES. [2023-01-27 21:57:27,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80676 conditions, 11866 events. 7704/11866 cut-off events. For 127931/127931 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 73630 event pairs, 1190 based on Foata normal form. 2/11866 useless extension candidates. Maximal degree in co-relation 80197. Up to 9995 conditions per place. [2023-01-27 21:57:27,094 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 792 selfloop transitions, 436 changer transitions 3/1231 dead transitions. [2023-01-27 21:57:27,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 1231 transitions, 19249 flow [2023-01-27 21:57:27,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-01-27 21:57:27,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-01-27 21:57:27,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2656 transitions. [2023-01-27 21:57:27,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25080264400377716 [2023-01-27 21:57:27,099 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2656 transitions. [2023-01-27 21:57:27,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2656 transitions. [2023-01-27 21:57:27,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:57:27,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2656 transitions. [2023-01-27 21:57:27,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 88.53333333333333) internal successors, (2656), 30 states have internal predecessors, (2656), 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) [2023-01-27 21:57:27,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 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) [2023-01-27 21:57:27,109 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 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) [2023-01-27 21:57:27,109 INFO L175 Difference]: Start difference. First operand has 266 places, 1071 transitions, 14974 flow. Second operand 30 states and 2656 transitions. [2023-01-27 21:57:27,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 1231 transitions, 19249 flow [2023-01-27 21:57:28,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 1231 transitions, 18908 flow, removed 136 selfloop flow, removed 12 redundant places. [2023-01-27 21:57:28,069 INFO L231 Difference]: Finished difference. Result has 288 places, 1115 transitions, 16568 flow [2023-01-27 21:57:28,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=14641, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=393, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16568, PETRI_PLACES=288, PETRI_TRANSITIONS=1115} [2023-01-27 21:57:28,070 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2023-01-27 21:57:28,070 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 1115 transitions, 16568 flow [2023-01-27 21:57:28,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 84.0) internal successors, (2520), 30 states have internal predecessors, (2520), 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) [2023-01-27 21:57:28,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:57:28,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:57:28,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-27 21:57:28,271 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 [2023-01-27 21:57:28,272 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:57:28,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:57:28,272 INFO L85 PathProgramCache]: Analyzing trace with hash -680043111, now seen corresponding path program 8 times [2023-01-27 21:57:28,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:57:28,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922159284] [2023-01-27 21:57:28,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:57:28,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:57:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:57:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:57:29,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:57:29,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922159284] [2023-01-27 21:57:29,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922159284] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:57:29,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193438150] [2023-01-27 21:57:29,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:57:29,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:57:29,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:57:29,571 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) [2023-01-27 21:57:29,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 21:57:29,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:57:29,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:57:29,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 77 conjunts are in the unsatisfiable core [2023-01-27 21:57:29,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:57:29,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 21:57:29,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:57:30,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:57:30,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:57:30,109 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 21:57:30,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-01-27 21:57:30,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:57:30,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:57:30,174 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 21:57:30,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-01-27 21:57:30,289 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-01-27 21:57:30,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-01-27 21:57:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:57:30,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:57:32,473 WARN L839 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_522 (Array Int Int))) (or (<= c_~N~0 ~M~0) (= c_~res1~0 (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_522)) (.cse1 (* ~M~0 4))) (+ (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset)) (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)) c_~res2~0))) (< (+ ~M~0 1) c_~N~0))) is different from false [2023-01-27 21:57:34,511 WARN L839 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_522 (Array Int Int)) (v_ArrVal_521 (Array Int Int))) (or (= (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_521) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_522)) (.cse1 (* ~M~0 4))) (+ (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset)) c_~res2~0 (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)))) c_~res1~0) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0))) is different from false [2023-01-27 21:57:41,966 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:57:41,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 70 [2023-01-27 21:57:42,038 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:57:42,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38390 treesize of output 32314 [2023-01-27 21:57:42,325 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:57:42,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2006 treesize of output 1822 [2023-01-27 21:57:42,365 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:57:42,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1814 treesize of output 1438 [2023-01-27 21:57:42,435 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:57:42,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1430 treesize of output 1262 [2023-01-27 21:58:14,513 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:14,740 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:15,728 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:15,839 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:15,893 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:16,159 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:16,241 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:16,309 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:16,406 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:16,447 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:16,484 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:16,544 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:16,592 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:16,627 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:16,696 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:16,806 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:17,577 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:17,592 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:18,039 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:18,197 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:18,290 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:18,387 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:18,491 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:18,575 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:18,652 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:18,841 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:19,115 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:19,243 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:19,401 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:19,669 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-27 21:58:20,459 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:20,582 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:20,876 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:21,010 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:21,162 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:21,447 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:21,585 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:21,637 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:21,789 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:21,859 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:22,030 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:22,141 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:22,433 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:22,748 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:22,914 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:23,026 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:23,339 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:23,449 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:23,523 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:23,756 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:24,017 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:24,146 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:24,444 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:24,690 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:24,840 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:24,980 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:25,276 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:25,504 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-27 21:58:26,181 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-27 21:58:26,825 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:27,200 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:27,554 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-01-27 21:58:29,034 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-27 21:58:29,679 WARN L718 sPolynomialRelations]: Constructing 16384(two to the power of 14 dual juncts. [2023-01-27 21:58:33,078 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-01-27 21:58:34,502 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-27 21:58:35,128 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-01-27 21:58:36,738 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:37,023 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-27 21:58:37,679 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:37,924 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:38,043 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:38,299 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:38,548 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-27 21:58:39,180 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:39,305 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:39,351 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:39,466 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:39,521 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:39,655 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:39,781 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:39,886 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:40,299 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-27 21:58:40,909 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:41,158 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:41,443 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-01-27 21:58:42,876 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-27 21:58:43,510 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:43,759 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-27 21:58:44,378 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:44,649 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:44,696 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:44,811 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:45,177 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:45,264 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:45,365 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:45,613 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:45,715 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:45,877 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:45,968 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:45,983 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:46,099 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:46,306 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:46,325 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:46,378 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:46,434 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:46,553 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:46,688 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:46,796 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:46,963 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:47,108 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:58:47,482 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:47,594 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:47,702 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:47,731 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:47,759 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:47,784 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:47,852 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:47,892 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:47,929 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:47,944 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:48,126 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:48,158 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:48,209 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:48,267 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:58:48,427 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:48,481 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:48,518 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:48,568 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:48,623 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:48,659 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:48,738 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:48,770 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:58:48,836 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:48,898 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:48,935 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:48,999 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:49,043 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:49,082 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:49,427 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:50,534 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:50,592 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:51,610 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:52,405 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:52,473 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:52,492 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:52,524 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:52,550 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:52,567 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:52,581 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:58:52,613 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:52,665 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:58:52,687 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:58:53,373 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:00,494 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:00,641 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:01,776 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:01,828 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:02,290 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:02,375 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:02,629 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:02,850 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:02,917 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:02,952 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:02,967 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:03,095 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:03,396 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:03,519 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:03,539 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:03,584 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:03,628 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:03,763 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:59:04,022 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:59:04,294 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:59:04,410 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:59:04,523 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:59:04,671 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:59:04,790 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:04,896 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:59:05,071 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:59:05,091 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:05,168 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:05,187 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:05,281 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:05,484 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:59:05,502 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:05,559 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:05,608 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:05,788 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:05,836 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:59:05,854 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:05,921 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:06,013 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:06,039 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:06,197 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:59:06,246 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:59:06,407 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:59:06,686 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:59:06,965 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-27 21:59:07,012 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:59:07,148 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:07,204 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:59:07,241 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:07,681 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:07,844 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:59:07,987 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:59:08,764 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-01-27 21:59:10,235 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-01-27 21:59:11,731 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-01-27 21:59:13,304 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-27 21:59:13,960 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-01-27 21:59:14,038 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:59:14,327 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:59:14,608 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:59:14,974 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:59:15,023 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:59:15,315 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:59:15,625 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:15,718 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:15,917 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:16,270 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:16,649 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:16,730 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:16,787 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:59:16,818 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:17,264 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:17,292 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:17,373 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:17,381 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:17,584 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:17,665 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:17,690 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:17,761 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:18,064 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:18,159 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:18,227 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:18,742 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:18,756 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:19,473 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:19,513 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:21,139 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:21,163 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:21,263 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:21,607 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:21,622 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:21,638 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:22,079 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:22,580 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:22,593 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:22,606 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:22,877 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:22,908 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:22,939 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:23,083 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-27 21:59:23,104 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:59:23,215 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:59:23,325 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-27 21:59:23,453 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:23,562 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:23,618 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:23,688 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:23,944 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:23,984 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:24,022 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:24,050 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:24,081 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:24,132 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:24,171 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:26,407 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:26,427 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:26,454 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 21:59:26,590 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:26,658 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:26,691 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:27,042 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:28,498 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:28,514 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:28,540 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:28,644 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:28,684 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:28,715 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 21:59:28,754 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 21:59:28,771 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:28,808 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:30,987 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:31,278 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 21:59:46,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 1 not checked. [2023-01-27 21:59:46,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193438150] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:59:46,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:59:46,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12] total 33 [2023-01-27 21:59:46,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616795343] [2023-01-27 21:59:46,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:59:46,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-01-27 21:59:46,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:46,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-01-27 21:59:46,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=920, Unknown=24, NotChecked=126, Total=1190 [2023-01-27 21:59:46,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-01-27 21:59:46,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 1115 transitions, 16568 flow. Second operand has 35 states, 35 states have (on average 83.8) internal successors, (2933), 35 states have internal predecessors, (2933), 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) [2023-01-27 21:59:46,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:46,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-01-27 21:59:46,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:53,757 INFO L130 PetriNetUnfolder]: 8812/13691 cut-off events. [2023-01-27 21:59:53,757 INFO L131 PetriNetUnfolder]: For 151268/151268 co-relation queries the response was YES. [2023-01-27 21:59:53,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94097 conditions, 13691 events. 8812/13691 cut-off events. For 151268/151268 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 89378 event pairs, 671 based on Foata normal form. 8/13697 useless extension candidates. Maximal degree in co-relation 93746. Up to 7849 conditions per place. [2023-01-27 21:59:53,870 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 719 selfloop transitions, 774 changer transitions 11/1504 dead transitions. [2023-01-27 21:59:53,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 1504 transitions, 24011 flow [2023-01-27 21:59:53,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-27 21:59:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-27 21:59:53,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2355 transitions. [2023-01-27 21:59:53,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25659185007626933 [2023-01-27 21:59:53,883 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2355 transitions. [2023-01-27 21:59:53,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2355 transitions. [2023-01-27 21:59:53,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:53,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2355 transitions. [2023-01-27 21:59:53,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 90.57692307692308) internal successors, (2355), 26 states have internal predecessors, (2355), 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) [2023-01-27 21:59:53,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 353.0) internal successors, (9531), 27 states have internal predecessors, (9531), 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) [2023-01-27 21:59:53,893 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 353.0) internal successors, (9531), 27 states have internal predecessors, (9531), 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) [2023-01-27 21:59:53,893 INFO L175 Difference]: Start difference. First operand has 288 places, 1115 transitions, 16568 flow. Second operand 26 states and 2355 transitions. [2023-01-27 21:59:53,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 1504 transitions, 24011 flow [2023-01-27 21:59:55,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1504 transitions, 23736 flow, removed 20 selfloop flow, removed 15 redundant places. [2023-01-27 21:59:55,295 INFO L231 Difference]: Finished difference. Result has 309 places, 1263 transitions, 20815 flow [2023-01-27 21:59:55,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=16298, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=656, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=20815, PETRI_PLACES=309, PETRI_TRANSITIONS=1263} [2023-01-27 21:59:55,296 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2023-01-27 21:59:55,296 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 1263 transitions, 20815 flow [2023-01-27 21:59:55,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 83.8) internal successors, (2933), 35 states have internal predecessors, (2933), 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) [2023-01-27 21:59:55,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:55,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:59:55,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 21:59:55,502 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 [2023-01-27 21:59:55,503 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 21:59:55,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:55,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2060531317, now seen corresponding path program 9 times [2023-01-27 21:59:55,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:55,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322130057] [2023-01-27 21:59:55,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:55,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:59:56,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:56,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322130057] [2023-01-27 21:59:56,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322130057] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:59:56,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739550470] [2023-01-27 21:59:56,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 21:59:56,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:59:56,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:59:56,629 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) [2023-01-27 21:59:56,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-27 21:59:56,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 21:59:56,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:59:56,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 63 conjunts are in the unsatisfiable core [2023-01-27 21:59:56,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:59:57,165 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-01-27 21:59:57,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-01-27 21:59:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:59:57,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:59:57,360 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:59:57,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2023-01-27 21:59:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:59:57,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739550470] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:59:57,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:59:57,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 32 [2023-01-27 21:59:57,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937883974] [2023-01-27 21:59:57,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:59:57,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-27 21:59:57,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:57,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-27 21:59:57,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2023-01-27 21:59:57,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-01-27 21:59:57,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 1263 transitions, 20815 flow. Second operand has 34 states, 34 states have (on average 83.91176470588235) internal successors, (2853), 34 states have internal predecessors, (2853), 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) [2023-01-27 21:59:57,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:57,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-01-27 21:59:57,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:00:03,311 INFO L130 PetriNetUnfolder]: 9416/14648 cut-off events. [2023-01-27 22:00:03,312 INFO L131 PetriNetUnfolder]: For 227922/227922 co-relation queries the response was YES. [2023-01-27 22:00:03,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113911 conditions, 14648 events. 9416/14648 cut-off events. For 227922/227922 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 96009 event pairs, 1286 based on Foata normal form. 3/14650 useless extension candidates. Maximal degree in co-relation 113442. Up to 11621 conditions per place. [2023-01-27 22:00:03,463 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 948 selfloop transitions, 580 changer transitions 10/1538 dead transitions. [2023-01-27 22:00:03,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1538 transitions, 27718 flow [2023-01-27 22:00:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-01-27 22:00:03,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-01-27 22:00:03,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3272 transitions. [2023-01-27 22:00:03,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25051680575759894 [2023-01-27 22:00:03,468 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3272 transitions. [2023-01-27 22:00:03,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3272 transitions. [2023-01-27 22:00:03,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:00:03,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3272 transitions. [2023-01-27 22:00:03,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 88.43243243243244) internal successors, (3272), 37 states have internal predecessors, (3272), 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) [2023-01-27 22:00:03,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 353.0) internal successors, (13414), 38 states have internal predecessors, (13414), 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) [2023-01-27 22:00:03,481 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 353.0) internal successors, (13414), 38 states have internal predecessors, (13414), 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) [2023-01-27 22:00:03,481 INFO L175 Difference]: Start difference. First operand has 309 places, 1263 transitions, 20815 flow. Second operand 37 states and 3272 transitions. [2023-01-27 22:00:03,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1538 transitions, 27718 flow [2023-01-27 22:00:05,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1538 transitions, 27016 flow, removed 166 selfloop flow, removed 12 redundant places. [2023-01-27 22:00:05,791 INFO L231 Difference]: Finished difference. Result has 345 places, 1401 transitions, 24282 flow [2023-01-27 22:00:05,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=20183, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=454, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=777, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=24282, PETRI_PLACES=345, PETRI_TRANSITIONS=1401} [2023-01-27 22:00:05,793 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2023-01-27 22:00:05,793 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 1401 transitions, 24282 flow [2023-01-27 22:00:05,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 83.91176470588235) internal successors, (2853), 34 states have internal predecessors, (2853), 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) [2023-01-27 22:00:05,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:00:05,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:00:05,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-27 22:00:05,999 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 [2023-01-27 22:00:05,999 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:00:06,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:00:06,000 INFO L85 PathProgramCache]: Analyzing trace with hash 952548253, now seen corresponding path program 10 times [2023-01-27 22:00:06,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:00:06,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137329125] [2023-01-27 22:00:06,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:00:06,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:00:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:00:06,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:00:06,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:00:06,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137329125] [2023-01-27 22:00:06,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137329125] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:00:06,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705048366] [2023-01-27 22:00:06,888 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:00:06,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:00:06,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:00:06,890 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) [2023-01-27 22:00:06,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-27 22:00:06,991 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:00:06,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:00:06,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-27 22:00:06,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:00:07,319 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:00:07,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2023-01-27 22:00:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:00:07,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:00:07,448 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:00:07,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2023-01-27 22:00:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:00:07,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705048366] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:00:07,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:00:07,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2023-01-27 22:00:07,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295770601] [2023-01-27 22:00:07,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:00:07,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-27 22:00:07,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:00:07,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-27 22:00:07,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2023-01-27 22:00:07,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 353 [2023-01-27 22:00:07,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 1401 transitions, 24282 flow. Second operand has 31 states, 31 states have (on average 86.87096774193549) internal successors, (2693), 31 states have internal predecessors, (2693), 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) [2023-01-27 22:00:07,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:00:07,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 353 [2023-01-27 22:00:07,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:00:12,891 INFO L130 PetriNetUnfolder]: 9502/14834 cut-off events. [2023-01-27 22:00:12,891 INFO L131 PetriNetUnfolder]: For 239366/239366 co-relation queries the response was YES. [2023-01-27 22:00:12,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118370 conditions, 14834 events. 9502/14834 cut-off events. For 239366/239366 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 97989 event pairs, 1587 based on Foata normal form. 3/14835 useless extension candidates. Maximal degree in co-relation 117913. Up to 13724 conditions per place. [2023-01-27 22:00:13,051 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 1074 selfloop transitions, 398 changer transitions 13/1485 dead transitions. [2023-01-27 22:00:13,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1485 transitions, 28475 flow [2023-01-27 22:00:13,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 22:00:13,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-27 22:00:13,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1636 transitions. [2023-01-27 22:00:13,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25747560591753227 [2023-01-27 22:00:13,054 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1636 transitions. [2023-01-27 22:00:13,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1636 transitions. [2023-01-27 22:00:13,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:00:13,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1636 transitions. [2023-01-27 22:00:13,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 90.88888888888889) internal successors, (1636), 18 states have internal predecessors, (1636), 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) [2023-01-27 22:00:13,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 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) [2023-01-27 22:00:13,061 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 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) [2023-01-27 22:00:13,061 INFO L175 Difference]: Start difference. First operand has 345 places, 1401 transitions, 24282 flow. Second operand 18 states and 1636 transitions. [2023-01-27 22:00:13,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1485 transitions, 28475 flow [2023-01-27 22:00:15,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1485 transitions, 27518 flow, removed 445 selfloop flow, removed 10 redundant places. [2023-01-27 22:00:15,176 INFO L231 Difference]: Finished difference. Result has 359 places, 1440 transitions, 25164 flow [2023-01-27 22:00:15,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=23457, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1006, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=25164, PETRI_PLACES=359, PETRI_TRANSITIONS=1440} [2023-01-27 22:00:15,177 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2023-01-27 22:00:15,177 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 1440 transitions, 25164 flow [2023-01-27 22:00:15,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 86.87096774193549) internal successors, (2693), 31 states have internal predecessors, (2693), 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) [2023-01-27 22:00:15,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:00:15,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:00:15,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-01-27 22:00:15,378 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 [2023-01-27 22:00:15,378 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:00:15,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:00:15,379 INFO L85 PathProgramCache]: Analyzing trace with hash -70647383, now seen corresponding path program 11 times [2023-01-27 22:00:15,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:00:15,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649762420] [2023-01-27 22:00:15,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:00:15,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:00:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:00:16,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:00:16,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:00:16,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649762420] [2023-01-27 22:00:16,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649762420] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:00:16,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549420957] [2023-01-27 22:00:16,312 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 22:00:16,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:00:16,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:00:16,317 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) [2023-01-27 22:00:16,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-27 22:00:16,433 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:00:16,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:00:16,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 61 conjunts are in the unsatisfiable core [2023-01-27 22:00:16,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:00:16,696 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:00:16,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2023-01-27 22:00:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:00:16,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:00:16,805 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:00:16,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2023-01-27 22:00:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:00:17,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549420957] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:00:17,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:00:17,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 26 [2023-01-27 22:00:17,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118482529] [2023-01-27 22:00:17,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:00:17,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-27 22:00:17,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:00:17,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-27 22:00:17,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-01-27 22:00:17,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 353 [2023-01-27 22:00:17,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 1440 transitions, 25164 flow. Second operand has 28 states, 28 states have (on average 87.10714285714286) internal successors, (2439), 28 states have internal predecessors, (2439), 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) [2023-01-27 22:00:17,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:00:17,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 353 [2023-01-27 22:00:17,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:00:23,202 INFO L130 PetriNetUnfolder]: 9706/15166 cut-off events. [2023-01-27 22:00:23,202 INFO L131 PetriNetUnfolder]: For 226667/226667 co-relation queries the response was YES. [2023-01-27 22:00:23,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118405 conditions, 15166 events. 9706/15166 cut-off events. For 226667/226667 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 100694 event pairs, 1485 based on Foata normal form. 3/15169 useless extension candidates. Maximal degree in co-relation 117948. Up to 11569 conditions per place. [2023-01-27 22:00:23,338 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 886 selfloop transitions, 684 changer transitions 9/1579 dead transitions. [2023-01-27 22:00:23,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 1579 transitions, 29964 flow [2023-01-27 22:00:23,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-01-27 22:00:23,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-01-27 22:00:23,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2743 transitions. [2023-01-27 22:00:23,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2590179414542021 [2023-01-27 22:00:23,341 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2743 transitions. [2023-01-27 22:00:23,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2743 transitions. [2023-01-27 22:00:23,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:00:23,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2743 transitions. [2023-01-27 22:00:23,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 91.43333333333334) internal successors, (2743), 30 states have internal predecessors, (2743), 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) [2023-01-27 22:00:23,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 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) [2023-01-27 22:00:23,352 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 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) [2023-01-27 22:00:23,352 INFO L175 Difference]: Start difference. First operand has 359 places, 1440 transitions, 25164 flow. Second operand 30 states and 2743 transitions. [2023-01-27 22:00:23,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 1579 transitions, 29964 flow [2023-01-27 22:00:25,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 1579 transitions, 29495 flow, removed 53 selfloop flow, removed 9 redundant places. [2023-01-27 22:00:25,544 INFO L231 Difference]: Finished difference. Result has 384 places, 1475 transitions, 27023 flow [2023-01-27 22:00:25,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=24699, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=653, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=27023, PETRI_PLACES=384, PETRI_TRANSITIONS=1475} [2023-01-27 22:00:25,546 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2023-01-27 22:00:25,546 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 1475 transitions, 27023 flow [2023-01-27 22:00:25,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 87.10714285714286) internal successors, (2439), 28 states have internal predecessors, (2439), 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) [2023-01-27 22:00:25,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:00:25,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:00:25,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-01-27 22:00:25,747 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 [2023-01-27 22:00:25,747 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:00:25,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:00:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash 466247267, now seen corresponding path program 12 times [2023-01-27 22:00:25,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:00:25,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561640329] [2023-01-27 22:00:25,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:00:25,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:00:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:00:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:00:26,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:00:26,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561640329] [2023-01-27 22:00:26,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561640329] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:00:26,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919589224] [2023-01-27 22:00:26,917 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 22:00:26,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:00:26,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:00:26,918 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) [2023-01-27 22:00:26,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-27 22:00:27,024 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-27 22:00:27,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:00:27,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 57 conjunts are in the unsatisfiable core [2023-01-27 22:00:27,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:00:27,319 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-01-27 22:00:27,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-01-27 22:00:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:00:27,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:00:27,526 INFO L321 Elim1Store]: treesize reduction 49, result has 29.0 percent of original size [2023-01-27 22:00:27,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 29 [2023-01-27 22:00:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:00:27,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919589224] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:00:27,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:00:27,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 6] total 24 [2023-01-27 22:00:27,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661536658] [2023-01-27 22:00:27,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:00:27,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-27 22:00:27,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:00:27,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-27 22:00:27,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2023-01-27 22:00:27,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 353 [2023-01-27 22:00:27,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 1475 transitions, 27023 flow. Second operand has 26 states, 26 states have (on average 91.3076923076923) internal successors, (2374), 26 states have internal predecessors, (2374), 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) [2023-01-27 22:00:27,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:00:27,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 353 [2023-01-27 22:00:27,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:00:33,414 INFO L130 PetriNetUnfolder]: 9654/15192 cut-off events. [2023-01-27 22:00:33,415 INFO L131 PetriNetUnfolder]: For 246755/247378 co-relation queries the response was YES. [2023-01-27 22:00:33,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123027 conditions, 15192 events. 9654/15192 cut-off events. For 246755/247378 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 103750 event pairs, 1150 based on Foata normal form. 256/15343 useless extension candidates. Maximal degree in co-relation 122546. Up to 8903 conditions per place. [2023-01-27 22:00:33,606 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 836 selfloop transitions, 832 changer transitions 11/1727 dead transitions. [2023-01-27 22:00:33,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1727 transitions, 34217 flow [2023-01-27 22:00:33,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-27 22:00:33,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-27 22:00:33,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2201 transitions. [2023-01-27 22:00:33,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2710924990762409 [2023-01-27 22:00:33,610 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2201 transitions. [2023-01-27 22:00:33,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2201 transitions. [2023-01-27 22:00:33,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:00:33,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2201 transitions. [2023-01-27 22:00:33,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 95.69565217391305) internal successors, (2201), 23 states have internal predecessors, (2201), 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) [2023-01-27 22:00:33,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 353.0) internal successors, (8472), 24 states have internal predecessors, (8472), 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) [2023-01-27 22:00:33,617 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 353.0) internal successors, (8472), 24 states have internal predecessors, (8472), 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) [2023-01-27 22:00:33,617 INFO L175 Difference]: Start difference. First operand has 384 places, 1475 transitions, 27023 flow. Second operand 23 states and 2201 transitions. [2023-01-27 22:00:33,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1727 transitions, 34217 flow [2023-01-27 22:00:35,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 1727 transitions, 33332 flow, removed 130 selfloop flow, removed 18 redundant places. [2023-01-27 22:00:35,945 INFO L231 Difference]: Finished difference. Result has 394 places, 1617 transitions, 31101 flow [2023-01-27 22:00:35,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=26236, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=697, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=31101, PETRI_PLACES=394, PETRI_TRANSITIONS=1617} [2023-01-27 22:00:35,947 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2023-01-27 22:00:35,947 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 1617 transitions, 31101 flow [2023-01-27 22:00:35,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 91.3076923076923) internal successors, (2374), 26 states have internal predecessors, (2374), 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) [2023-01-27 22:00:35,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:00:35,948 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:00:35,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-27 22:00:36,154 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 [2023-01-27 22:00:36,154 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:00:36,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:00:36,155 INFO L85 PathProgramCache]: Analyzing trace with hash -7374613, now seen corresponding path program 13 times [2023-01-27 22:00:36,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:00:36,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436165427] [2023-01-27 22:00:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:00:36,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:00:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:00:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:00:36,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:00:36,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436165427] [2023-01-27 22:00:36,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436165427] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:00:36,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492416771] [2023-01-27 22:00:36,273 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 22:00:36,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:00:36,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:00:36,274 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) [2023-01-27 22:00:36,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-27 22:00:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:00:36,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:00:36,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:00:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:00:36,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:00:36,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:00:36,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492416771] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:00:36,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:00:36,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-27 22:00:36,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881641717] [2023-01-27 22:00:36,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:00:36,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 22:00:36,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:00:36,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 22:00:36,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-01-27 22:00:36,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 353 [2023-01-27 22:00:36,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 1617 transitions, 31101 flow. Second operand has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 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) [2023-01-27 22:00:36,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:00:36,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 353 [2023-01-27 22:00:36,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:00:43,299 INFO L130 PetriNetUnfolder]: 11190/18524 cut-off events. [2023-01-27 22:00:43,299 INFO L131 PetriNetUnfolder]: For 386085/389081 co-relation queries the response was YES. [2023-01-27 22:00:43,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156674 conditions, 18524 events. 11190/18524 cut-off events. For 386085/389081 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 142503 event pairs, 2052 based on Foata normal form. 2194/20154 useless extension candidates. Maximal degree in co-relation 156536. Up to 6496 conditions per place. [2023-01-27 22:00:43,530 INFO L137 encePairwiseOnDemand]: 345/353 looper letters, 1674 selfloop transitions, 202 changer transitions 21/1996 dead transitions. [2023-01-27 22:00:43,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 1996 transitions, 42013 flow [2023-01-27 22:00:43,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 22:00:43,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 22:00:43,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1620 transitions. [2023-01-27 22:00:43,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38243626062322944 [2023-01-27 22:00:43,533 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1620 transitions. [2023-01-27 22:00:43,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1620 transitions. [2023-01-27 22:00:43,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:00:43,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1620 transitions. [2023-01-27 22:00:43,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 135.0) internal successors, (1620), 12 states have internal predecessors, (1620), 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) [2023-01-27 22:00:43,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 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) [2023-01-27 22:00:43,538 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 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) [2023-01-27 22:00:43,538 INFO L175 Difference]: Start difference. First operand has 394 places, 1617 transitions, 31101 flow. Second operand 12 states and 1620 transitions. [2023-01-27 22:00:43,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 1996 transitions, 42013 flow [2023-01-27 22:00:46,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 1996 transitions, 40945 flow, removed 233 selfloop flow, removed 18 redundant places. [2023-01-27 22:00:47,021 INFO L231 Difference]: Finished difference. Result has 385 places, 1344 transitions, 26255 flow [2023-01-27 22:00:47,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=25198, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=26255, PETRI_PLACES=385, PETRI_TRANSITIONS=1344} [2023-01-27 22:00:47,023 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2023-01-27 22:00:47,023 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 1344 transitions, 26255 flow [2023-01-27 22:00:47,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 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) [2023-01-27 22:00:47,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:00:47,023 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:00:47,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-27 22:00:47,229 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 [2023-01-27 22:00:47,229 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:00:47,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:00:47,230 INFO L85 PathProgramCache]: Analyzing trace with hash -556909332, now seen corresponding path program 14 times [2023-01-27 22:00:47,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:00:47,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275854719] [2023-01-27 22:00:47,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:00:47,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:00:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:00:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:00:47,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:00:47,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275854719] [2023-01-27 22:00:47,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275854719] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:00:47,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748429092] [2023-01-27 22:00:47,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:00:47,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:00:47,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:00:47,393 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) [2023-01-27 22:00:47,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-27 22:00:47,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:00:47,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:00:47,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-27 22:00:47,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:00:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:00:47,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:00:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:00:47,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748429092] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:00:47,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:00:47,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-01-27 22:00:47,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633419428] [2023-01-27 22:00:47,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:00:47,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 22:00:47,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:00:47,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 22:00:47,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-01-27 22:00:47,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 353 [2023-01-27 22:00:47,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1344 transitions, 26255 flow. Second operand has 15 states, 15 states have (on average 124.0) internal successors, (1860), 15 states have internal predecessors, (1860), 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) [2023-01-27 22:00:47,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:00:47,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 353 [2023-01-27 22:00:47,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:00:53,825 INFO L130 PetriNetUnfolder]: 11048/18623 cut-off events. [2023-01-27 22:00:53,825 INFO L131 PetriNetUnfolder]: For 339007/340643 co-relation queries the response was YES. [2023-01-27 22:00:53,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149658 conditions, 18623 events. 11048/18623 cut-off events. For 339007/340643 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 147997 event pairs, 1831 based on Foata normal form. 1287/19715 useless extension candidates. Maximal degree in co-relation 149529. Up to 5357 conditions per place. [2023-01-27 22:00:53,996 INFO L137 encePairwiseOnDemand]: 345/353 looper letters, 1351 selfloop transitions, 278 changer transitions 255/1970 dead transitions. [2023-01-27 22:00:53,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1970 transitions, 40594 flow [2023-01-27 22:00:53,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 22:00:53,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 22:00:53,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1814 transitions. [2023-01-27 22:00:53,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3670578713071631 [2023-01-27 22:00:53,998 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1814 transitions. [2023-01-27 22:00:53,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1814 transitions. [2023-01-27 22:00:53,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:00:53,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1814 transitions. [2023-01-27 22:00:54,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 129.57142857142858) internal successors, (1814), 14 states have internal predecessors, (1814), 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) [2023-01-27 22:00:54,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 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) [2023-01-27 22:00:54,003 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 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) [2023-01-27 22:00:54,003 INFO L175 Difference]: Start difference. First operand has 385 places, 1344 transitions, 26255 flow. Second operand 14 states and 1814 transitions. [2023-01-27 22:00:54,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 1970 transitions, 40594 flow [2023-01-27 22:00:57,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1970 transitions, 40474 flow, removed 51 selfloop flow, removed 6 redundant places. [2023-01-27 22:00:57,309 INFO L231 Difference]: Finished difference. Result has 395 places, 1254 transitions, 24755 flow [2023-01-27 22:00:57,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=25321, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1080, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=24755, PETRI_PLACES=395, PETRI_TRANSITIONS=1254} [2023-01-27 22:00:57,310 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2023-01-27 22:00:57,310 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 1254 transitions, 24755 flow [2023-01-27 22:00:57,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.0) internal successors, (1860), 15 states have internal predecessors, (1860), 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) [2023-01-27 22:00:57,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:00:57,311 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:00:57,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-27 22:00:57,511 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 [2023-01-27 22:00:57,511 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:00:57,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:00:57,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1941623595, now seen corresponding path program 15 times [2023-01-27 22:00:57,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:00:57,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502637495] [2023-01-27 22:00:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:00:57,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:00:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:00:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:00:57,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:00:57,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502637495] [2023-01-27 22:00:57,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502637495] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:00:57,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774965399] [2023-01-27 22:00:57,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 22:00:57,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:00:57,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:00:57,613 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) [2023-01-27 22:00:57,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-27 22:00:57,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 22:00:57,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:00:57,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:00:57,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:00:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:00:57,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:00:57,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:00:57,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774965399] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:00:57,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:00:57,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-27 22:00:57,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163350450] [2023-01-27 22:00:57,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:00:57,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 22:00:57,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:00:57,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 22:00:57,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-01-27 22:00:57,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 353 [2023-01-27 22:00:57,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 1254 transitions, 24755 flow. Second operand has 14 states, 14 states have (on average 130.42857142857142) internal successors, (1826), 14 states have internal predecessors, (1826), 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) [2023-01-27 22:00:57,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:00:57,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 353 [2023-01-27 22:00:57,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:01:02,204 INFO L130 PetriNetUnfolder]: 7557/12853 cut-off events. [2023-01-27 22:01:02,204 INFO L131 PetriNetUnfolder]: For 265305/267628 co-relation queries the response was YES. [2023-01-27 22:01:02,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106012 conditions, 12853 events. 7557/12853 cut-off events. For 265305/267628 co-relation queries the response was YES. Maximal size of possible extension queue 908. Compared 98923 event pairs, 2673 based on Foata normal form. 865/13011 useless extension candidates. Maximal degree in co-relation 105881. Up to 8468 conditions per place. [2023-01-27 22:01:02,335 INFO L137 encePairwiseOnDemand]: 348/353 looper letters, 1176 selfloop transitions, 11 changer transitions 11/1327 dead transitions. [2023-01-27 22:01:02,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 1327 transitions, 27017 flow [2023-01-27 22:01:02,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 22:01:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 22:01:02,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 946 transitions. [2023-01-27 22:01:02,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828409550789154 [2023-01-27 22:01:02,336 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 946 transitions. [2023-01-27 22:01:02,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 946 transitions. [2023-01-27 22:01:02,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:01:02,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 946 transitions. [2023-01-27 22:01:02,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 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) [2023-01-27 22:01:02,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 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) [2023-01-27 22:01:02,340 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 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) [2023-01-27 22:01:02,340 INFO L175 Difference]: Start difference. First operand has 395 places, 1254 transitions, 24755 flow. Second operand 7 states and 946 transitions. [2023-01-27 22:01:02,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 1327 transitions, 27017 flow [2023-01-27 22:01:03,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 1327 transitions, 26184 flow, removed 200 selfloop flow, removed 21 redundant places. [2023-01-27 22:01:03,859 INFO L231 Difference]: Finished difference. Result has 371 places, 1073 transitions, 19541 flow [2023-01-27 22:01:03,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19654, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1081, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1070, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19541, PETRI_PLACES=371, PETRI_TRANSITIONS=1073} [2023-01-27 22:01:03,860 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2023-01-27 22:01:03,860 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 1073 transitions, 19541 flow [2023-01-27 22:01:03,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 130.42857142857142) internal successors, (1826), 14 states have internal predecessors, (1826), 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) [2023-01-27 22:01:03,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:01:03,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:01:03,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-27 22:01:04,061 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 [2023-01-27 22:01:04,061 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:01:04,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:01:04,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1231118575, now seen corresponding path program 1 times [2023-01-27 22:01:04,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:01:04,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87401567] [2023-01-27 22:01:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:01:04,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:01:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:01:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:01:04,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:01:04,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87401567] [2023-01-27 22:01:04,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87401567] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:01:04,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211331876] [2023-01-27 22:01:04,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:01:04,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:01:04,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:01:04,177 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) [2023-01-27 22:01:04,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-27 22:01:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:01:04,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 22:01:04,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:01:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:01:04,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:01:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:01:04,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211331876] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:01:04,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:01:04,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-01-27 22:01:04,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564975995] [2023-01-27 22:01:04,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:01:04,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 22:01:04,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:01:04,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 22:01:04,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-01-27 22:01:04,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-27 22:01:04,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 1073 transitions, 19541 flow. Second operand has 17 states, 17 states have (on average 120.6470588235294) internal successors, (2051), 17 states have internal predecessors, (2051), 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) [2023-01-27 22:01:04,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:01:04,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-27 22:01:04,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:01:10,528 INFO L130 PetriNetUnfolder]: 11072/18974 cut-off events. [2023-01-27 22:01:10,528 INFO L131 PetriNetUnfolder]: For 316575/316681 co-relation queries the response was YES. [2023-01-27 22:01:10,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145429 conditions, 18974 events. 11072/18974 cut-off events. For 316575/316681 co-relation queries the response was YES. Maximal size of possible extension queue 1198. Compared 153344 event pairs, 846 based on Foata normal form. 180/19132 useless extension candidates. Maximal degree in co-relation 145303. Up to 5337 conditions per place. [2023-01-27 22:01:10,730 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 1550 selfloop transitions, 455 changer transitions 146/2185 dead transitions. [2023-01-27 22:01:10,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 2185 transitions, 41509 flow [2023-01-27 22:01:10,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-27 22:01:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-27 22:01:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3687 transitions. [2023-01-27 22:01:10,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3601641105792713 [2023-01-27 22:01:10,733 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3687 transitions. [2023-01-27 22:01:10,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3687 transitions. [2023-01-27 22:01:10,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:01:10,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3687 transitions. [2023-01-27 22:01:10,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 127.13793103448276) internal successors, (3687), 29 states have internal predecessors, (3687), 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) [2023-01-27 22:01:10,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 353.0) internal successors, (10590), 30 states have internal predecessors, (10590), 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) [2023-01-27 22:01:10,744 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 353.0) internal successors, (10590), 30 states have internal predecessors, (10590), 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) [2023-01-27 22:01:10,744 INFO L175 Difference]: Start difference. First operand has 371 places, 1073 transitions, 19541 flow. Second operand 29 states and 3687 transitions. [2023-01-27 22:01:10,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 2185 transitions, 41509 flow [2023-01-27 22:01:13,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 2185 transitions, 41137 flow, removed 32 selfloop flow, removed 16 redundant places. [2023-01-27 22:01:13,066 INFO L231 Difference]: Finished difference. Result has 396 places, 1387 transitions, 26430 flow [2023-01-27 22:01:13,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19173, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1069, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=26430, PETRI_PLACES=396, PETRI_TRANSITIONS=1387} [2023-01-27 22:01:13,068 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2023-01-27 22:01:13,068 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 1387 transitions, 26430 flow [2023-01-27 22:01:13,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 120.6470588235294) internal successors, (2051), 17 states have internal predecessors, (2051), 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) [2023-01-27 22:01:13,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:01:13,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:01:13,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-27 22:01:13,275 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 [2023-01-27 22:01:13,275 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:01:13,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:01:13,276 INFO L85 PathProgramCache]: Analyzing trace with hash -16239823, now seen corresponding path program 2 times [2023-01-27 22:01:13,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:01:13,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575614201] [2023-01-27 22:01:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:01:13,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:01:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:01:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:01:13,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:01:13,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575614201] [2023-01-27 22:01:13,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575614201] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:01:13,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763153437] [2023-01-27 22:01:13,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:01:13,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:01:13,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:01:13,373 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) [2023-01-27 22:01:13,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-27 22:01:13,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:01:13,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:01:13,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 22:01:13,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:01:13,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:01:13,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:01:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:01:13,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763153437] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:01:13,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:01:13,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-01-27 22:01:13,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978568967] [2023-01-27 22:01:13,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:01:13,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 22:01:13,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:01:13,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 22:01:13,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-01-27 22:01:13,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-27 22:01:13,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1387 transitions, 26430 flow. Second operand has 16 states, 16 states have (on average 120.75) internal successors, (1932), 16 states have internal predecessors, (1932), 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) [2023-01-27 22:01:13,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:01:13,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-27 22:01:13,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:01:20,462 INFO L130 PetriNetUnfolder]: 10331/18073 cut-off events. [2023-01-27 22:01:20,462 INFO L131 PetriNetUnfolder]: For 379266/379368 co-relation queries the response was YES. [2023-01-27 22:01:20,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151051 conditions, 18073 events. 10331/18073 cut-off events. For 379266/379368 co-relation queries the response was YES. Maximal size of possible extension queue 1207. Compared 148255 event pairs, 1833 based on Foata normal form. 416/18450 useless extension candidates. Maximal degree in co-relation 150916. Up to 5761 conditions per place. [2023-01-27 22:01:20,675 INFO L137 encePairwiseOnDemand]: 344/353 looper letters, 1111 selfloop transitions, 503 changer transitions 184/1832 dead transitions. [2023-01-27 22:01:20,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1832 transitions, 36910 flow [2023-01-27 22:01:20,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-27 22:01:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-27 22:01:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2561 transitions. [2023-01-27 22:01:20,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36274787535410763 [2023-01-27 22:01:20,678 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2561 transitions. [2023-01-27 22:01:20,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2561 transitions. [2023-01-27 22:01:20,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:01:20,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2561 transitions. [2023-01-27 22:01:20,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 128.05) internal successors, (2561), 20 states have internal predecessors, (2561), 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) [2023-01-27 22:01:20,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 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) [2023-01-27 22:01:20,686 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 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) [2023-01-27 22:01:20,686 INFO L175 Difference]: Start difference. First operand has 396 places, 1387 transitions, 26430 flow. Second operand 20 states and 2561 transitions. [2023-01-27 22:01:20,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 1832 transitions, 36910 flow [2023-01-27 22:01:24,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1832 transitions, 36291 flow, removed 214 selfloop flow, removed 7 redundant places. [2023-01-27 22:01:24,185 INFO L231 Difference]: Finished difference. Result has 412 places, 1393 transitions, 27440 flow [2023-01-27 22:01:24,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=25405, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=961, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=27440, PETRI_PLACES=412, PETRI_TRANSITIONS=1393} [2023-01-27 22:01:24,186 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 381 predicate places. [2023-01-27 22:01:24,186 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 1393 transitions, 27440 flow [2023-01-27 22:01:24,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 120.75) internal successors, (1932), 16 states have internal predecessors, (1932), 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) [2023-01-27 22:01:24,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:01:24,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:01:24,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-27 22:01:24,387 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 [2023-01-27 22:01:24,387 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:01:24,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:01:24,388 INFO L85 PathProgramCache]: Analyzing trace with hash -57058493, now seen corresponding path program 3 times [2023-01-27 22:01:24,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:01:24,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044448483] [2023-01-27 22:01:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:01:24,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:01:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:01:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:01:24,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:01:24,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044448483] [2023-01-27 22:01:24,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044448483] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:01:24,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303605526] [2023-01-27 22:01:24,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 22:01:24,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:01:24,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:01:24,493 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) [2023-01-27 22:01:24,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-27 22:01:24,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 22:01:24,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:01:24,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 22:01:24,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:01:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:01:24,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:01:24,772 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:01:24,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303605526] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:01:24,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:01:24,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-27 22:01:24,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951917638] [2023-01-27 22:01:24,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:01:24,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 22:01:24,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:01:24,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 22:01:24,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-01-27 22:01:24,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-27 22:01:24,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 1393 transitions, 27440 flow. Second operand has 18 states, 18 states have (on average 120.5) internal successors, (2169), 18 states have internal predecessors, (2169), 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) [2023-01-27 22:01:24,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:01:24,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-27 22:01:24,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:01:30,979 INFO L130 PetriNetUnfolder]: 9498/16524 cut-off events. [2023-01-27 22:01:30,980 INFO L131 PetriNetUnfolder]: For 351504/351656 co-relation queries the response was YES. [2023-01-27 22:01:31,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140288 conditions, 16524 events. 9498/16524 cut-off events. For 351504/351656 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 133518 event pairs, 627 based on Foata normal form. 381/16888 useless extension candidates. Maximal degree in co-relation 140150. Up to 4395 conditions per place. [2023-01-27 22:01:31,151 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 1407 selfloop transitions, 316 changer transitions 358/2115 dead transitions. [2023-01-27 22:01:31,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 2115 transitions, 43551 flow [2023-01-27 22:01:31,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-27 22:01:31,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-27 22:01:31,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4034 transitions. [2023-01-27 22:01:31,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35711756373937675 [2023-01-27 22:01:31,154 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4034 transitions. [2023-01-27 22:01:31,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4034 transitions. [2023-01-27 22:01:31,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:01:31,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4034 transitions. [2023-01-27 22:01:31,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 126.0625) internal successors, (4034), 32 states have internal predecessors, (4034), 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) [2023-01-27 22:01:31,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 353.0) internal successors, (11649), 33 states have internal predecessors, (11649), 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) [2023-01-27 22:01:31,162 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 353.0) internal successors, (11649), 33 states have internal predecessors, (11649), 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) [2023-01-27 22:01:31,162 INFO L175 Difference]: Start difference. First operand has 412 places, 1393 transitions, 27440 flow. Second operand 32 states and 4034 transitions. [2023-01-27 22:01:31,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 2115 transitions, 43551 flow [2023-01-27 22:01:34,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 2115 transitions, 42969 flow, removed 215 selfloop flow, removed 9 redundant places. [2023-01-27 22:01:34,046 INFO L231 Difference]: Finished difference. Result has 430 places, 1334 transitions, 26350 flow [2023-01-27 22:01:34,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=26581, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1068, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=26350, PETRI_PLACES=430, PETRI_TRANSITIONS=1334} [2023-01-27 22:01:34,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2023-01-27 22:01:34,047 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 1334 transitions, 26350 flow [2023-01-27 22:01:34,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 120.5) internal successors, (2169), 18 states have internal predecessors, (2169), 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) [2023-01-27 22:01:34,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:01:34,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:01:34,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-27 22:01:34,248 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 [2023-01-27 22:01:34,248 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:01:34,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:01:34,249 INFO L85 PathProgramCache]: Analyzing trace with hash -720137693, now seen corresponding path program 4 times [2023-01-27 22:01:34,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:01:34,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080937693] [2023-01-27 22:01:34,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:01:34,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:01:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:01:34,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:01:34,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:01:34,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080937693] [2023-01-27 22:01:34,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080937693] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:01:34,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176699502] [2023-01-27 22:01:34,351 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:01:34,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:01:34,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:01:34,352 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) [2023-01-27 22:01:34,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-27 22:01:34,464 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:01:34,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:01:34,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 22:01:34,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:01:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:01:34,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:01:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:01:34,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176699502] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:01:34,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:01:34,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-27 22:01:34,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816670846] [2023-01-27 22:01:34,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:01:34,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 22:01:34,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:01:34,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 22:01:34,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-01-27 22:01:34,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-27 22:01:34,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1334 transitions, 26350 flow. Second operand has 18 states, 18 states have (on average 120.61111111111111) internal successors, (2171), 18 states have internal predecessors, (2171), 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) [2023-01-27 22:01:34,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:01:34,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-27 22:01:34,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:01:39,821 INFO L130 PetriNetUnfolder]: 7655/13389 cut-off events. [2023-01-27 22:01:39,821 INFO L131 PetriNetUnfolder]: For 267220/267376 co-relation queries the response was YES. [2023-01-27 22:01:39,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114259 conditions, 13389 events. 7655/13389 cut-off events. For 267220/267376 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 105318 event pairs, 754 based on Foata normal form. 425/13797 useless extension candidates. Maximal degree in co-relation 114122. Up to 4139 conditions per place. [2023-01-27 22:01:39,964 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 1191 selfloop transitions, 419 changer transitions 198/1842 dead transitions. [2023-01-27 22:01:39,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 1842 transitions, 37530 flow [2023-01-27 22:01:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-01-27 22:01:39,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-01-27 22:01:39,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3923 transitions. [2023-01-27 22:01:39,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3584940144384538 [2023-01-27 22:01:39,968 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3923 transitions. [2023-01-27 22:01:39,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3923 transitions. [2023-01-27 22:01:39,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:01:39,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3923 transitions. [2023-01-27 22:01:39,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 126.54838709677419) internal successors, (3923), 31 states have internal predecessors, (3923), 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) [2023-01-27 22:01:39,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 353.0) internal successors, (11296), 32 states have internal predecessors, (11296), 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) [2023-01-27 22:01:39,979 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 353.0) internal successors, (11296), 32 states have internal predecessors, (11296), 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) [2023-01-27 22:01:39,979 INFO L175 Difference]: Start difference. First operand has 430 places, 1334 transitions, 26350 flow. Second operand 31 states and 3923 transitions. [2023-01-27 22:01:39,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 1842 transitions, 37530 flow [2023-01-27 22:01:41,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 1842 transitions, 35732 flow, removed 341 selfloop flow, removed 31 redundant places. [2023-01-27 22:01:41,993 INFO L231 Difference]: Finished difference. Result has 433 places, 1227 transitions, 23945 flow [2023-01-27 22:01:41,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=22655, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=875, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=23945, PETRI_PLACES=433, PETRI_TRANSITIONS=1227} [2023-01-27 22:01:41,994 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2023-01-27 22:01:41,994 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 1227 transitions, 23945 flow [2023-01-27 22:01:41,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 120.61111111111111) internal successors, (2171), 18 states have internal predecessors, (2171), 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) [2023-01-27 22:01:41,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:01:41,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:01:42,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-27 22:01:42,200 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 [2023-01-27 22:01:42,201 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:01:42,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:01:42,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1459680607, now seen corresponding path program 5 times [2023-01-27 22:01:42,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:01:42,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318444301] [2023-01-27 22:01:42,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:01:42,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:01:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:01:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:01:42,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:01:42,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318444301] [2023-01-27 22:01:42,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318444301] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:01:42,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618434442] [2023-01-27 22:01:42,300 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 22:01:42,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:01:42,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:01:42,305 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) [2023-01-27 22:01:42,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-27 22:01:42,425 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:01:42,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:01:42,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 22:01:42,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:01:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:01:42,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:01:42,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:01:42,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618434442] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:01:42,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:01:42,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-01-27 22:01:42,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785335898] [2023-01-27 22:01:42,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:01:42,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 22:01:42,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:01:42,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 22:01:42,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-01-27 22:01:42,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-27 22:01:42,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 1227 transitions, 23945 flow. Second operand has 16 states, 16 states have (on average 120.6875) internal successors, (1931), 16 states have internal predecessors, (1931), 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) [2023-01-27 22:01:42,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:01:42,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-27 22:01:42,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:01:46,002 INFO L130 PetriNetUnfolder]: 5253/9441 cut-off events. [2023-01-27 22:01:46,002 INFO L131 PetriNetUnfolder]: For 189872/190014 co-relation queries the response was YES. [2023-01-27 22:01:46,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75915 conditions, 9441 events. 5253/9441 cut-off events. For 189872/190014 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 71833 event pairs, 449 based on Foata normal form. 737/10157 useless extension candidates. Maximal degree in co-relation 75777. Up to 3529 conditions per place. [2023-01-27 22:01:46,090 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 728 selfloop transitions, 50 changer transitions 388/1184 dead transitions. [2023-01-27 22:01:46,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1184 transitions, 22834 flow [2023-01-27 22:01:46,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 22:01:46,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-27 22:01:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2254 transitions. [2023-01-27 22:01:46,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3547371734340573 [2023-01-27 22:01:46,095 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2254 transitions. [2023-01-27 22:01:46,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2254 transitions. [2023-01-27 22:01:46,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:01:46,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2254 transitions. [2023-01-27 22:01:46,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 125.22222222222223) internal successors, (2254), 18 states have internal predecessors, (2254), 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) [2023-01-27 22:01:46,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 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) [2023-01-27 22:01:46,102 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 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) [2023-01-27 22:01:46,102 INFO L175 Difference]: Start difference. First operand has 433 places, 1227 transitions, 23945 flow. Second operand 18 states and 2254 transitions. [2023-01-27 22:01:46,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1184 transitions, 22834 flow [2023-01-27 22:01:47,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 1184 transitions, 22349 flow, removed 50 selfloop flow, removed 24 redundant places. [2023-01-27 22:01:47,269 INFO L231 Difference]: Finished difference. Result has 395 places, 674 transitions, 11876 flow [2023-01-27 22:01:47,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=16613, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=892, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=11876, PETRI_PLACES=395, PETRI_TRANSITIONS=674} [2023-01-27 22:01:47,270 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2023-01-27 22:01:47,270 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 674 transitions, 11876 flow [2023-01-27 22:01:47,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 120.6875) internal successors, (1931), 16 states have internal predecessors, (1931), 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) [2023-01-27 22:01:47,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:01:47,271 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:01:47,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-01-27 22:01:47,477 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 [2023-01-27 22:01:47,477 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:01:47,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:01:47,478 INFO L85 PathProgramCache]: Analyzing trace with hash 989218226, now seen corresponding path program 16 times [2023-01-27 22:01:47,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:01:47,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013577333] [2023-01-27 22:01:47,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:01:47,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:01:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:01:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:01:47,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:01:47,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013577333] [2023-01-27 22:01:47,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013577333] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:01:47,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260878619] [2023-01-27 22:01:47,567 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:01:47,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:01:47,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:01:47,569 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) [2023-01-27 22:01:47,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-27 22:01:47,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:01:47,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:01:47,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:01:47,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:01:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:01:47,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:01:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:01:47,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260878619] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:01:47,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:01:47,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2023-01-27 22:01:47,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76222158] [2023-01-27 22:01:47,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:01:47,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 22:01:47,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:01:47,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 22:01:47,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-01-27 22:01:47,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 353 [2023-01-27 22:01:47,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 674 transitions, 11876 flow. Second operand has 19 states, 19 states have (on average 117.94736842105263) internal successors, (2241), 19 states have internal predecessors, (2241), 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) [2023-01-27 22:01:47,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:01:47,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 353 [2023-01-27 22:01:47,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:01:50,104 INFO L130 PetriNetUnfolder]: 3313/5243 cut-off events. [2023-01-27 22:01:50,104 INFO L131 PetriNetUnfolder]: For 118541/118541 co-relation queries the response was YES. [2023-01-27 22:01:50,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46932 conditions, 5243 events. 3313/5243 cut-off events. For 118541/118541 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 29570 event pairs, 320 based on Foata normal form. 385/5625 useless extension candidates. Maximal degree in co-relation 46805. Up to 2053 conditions per place. [2023-01-27 22:01:50,153 INFO L137 encePairwiseOnDemand]: 340/353 looper letters, 431 selfloop transitions, 539 changer transitions 0/970 dead transitions. [2023-01-27 22:01:50,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 970 transitions, 18377 flow [2023-01-27 22:01:50,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-01-27 22:01:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-01-27 22:01:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4622 transitions. [2023-01-27 22:01:50,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3445653794543015 [2023-01-27 22:01:50,158 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4622 transitions. [2023-01-27 22:01:50,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4622 transitions. [2023-01-27 22:01:50,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:01:50,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4622 transitions. [2023-01-27 22:01:50,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 121.63157894736842) internal successors, (4622), 38 states have internal predecessors, (4622), 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) [2023-01-27 22:01:50,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 353.0) internal successors, (13767), 39 states have internal predecessors, (13767), 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) [2023-01-27 22:01:50,171 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 353.0) internal successors, (13767), 39 states have internal predecessors, (13767), 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) [2023-01-27 22:01:50,171 INFO L175 Difference]: Start difference. First operand has 395 places, 674 transitions, 11876 flow. Second operand 38 states and 4622 transitions. [2023-01-27 22:01:50,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 970 transitions, 18377 flow [2023-01-27 22:01:50,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 970 transitions, 16390 flow, removed 619 selfloop flow, removed 28 redundant places. [2023-01-27 22:01:50,711 INFO L231 Difference]: Finished difference. Result has 318 places, 779 transitions, 14356 flow [2023-01-27 22:01:50,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=7733, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14356, PETRI_PLACES=318, PETRI_TRANSITIONS=779} [2023-01-27 22:01:50,712 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2023-01-27 22:01:50,712 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 779 transitions, 14356 flow [2023-01-27 22:01:50,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 117.94736842105263) internal successors, (2241), 19 states have internal predecessors, (2241), 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) [2023-01-27 22:01:50,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:01:50,713 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:01:50,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-01-27 22:01:50,913 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 [2023-01-27 22:01:50,914 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:01:50,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:01:50,914 INFO L85 PathProgramCache]: Analyzing trace with hash 2072912546, now seen corresponding path program 17 times [2023-01-27 22:01:50,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:01:50,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568803540] [2023-01-27 22:01:50,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:01:50,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:01:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:01:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:01:51,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:01:51,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568803540] [2023-01-27 22:01:51,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568803540] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:01:51,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616009925] [2023-01-27 22:01:51,045 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 22:01:51,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:01:51,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:01:51,046 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) [2023-01-27 22:01:51,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-01-27 22:01:51,172 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:01:51,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:01:51,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:01:51,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:01:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:01:51,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:01:51,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:01:51,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616009925] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:01:51,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:01:51,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-01-27 22:01:51,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233920727] [2023-01-27 22:01:51,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:01:51,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 22:01:51,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:01:51,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 22:01:51,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-01-27 22:01:51,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-27 22:01:51,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 779 transitions, 14356 flow. Second operand has 20 states, 20 states have (on average 120.2) internal successors, (2404), 20 states have internal predecessors, (2404), 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) [2023-01-27 22:01:51,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:01:51,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-27 22:01:51,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:01:53,568 INFO L130 PetriNetUnfolder]: 4158/6657 cut-off events. [2023-01-27 22:01:53,568 INFO L131 PetriNetUnfolder]: For 182123/182208 co-relation queries the response was YES. [2023-01-27 22:01:53,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63313 conditions, 6657 events. 4158/6657 cut-off events. For 182123/182208 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 40055 event pairs, 503 based on Foata normal form. 53/6705 useless extension candidates. Maximal degree in co-relation 63181. Up to 2861 conditions per place. [2023-01-27 22:01:53,633 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 684 selfloop transitions, 355 changer transitions 0/1077 dead transitions. [2023-01-27 22:01:53,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 1077 transitions, 21954 flow [2023-01-27 22:01:53,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-27 22:01:53,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-27 22:01:53,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1888 transitions. [2023-01-27 22:01:53,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3565627950897073 [2023-01-27 22:01:53,636 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1888 transitions. [2023-01-27 22:01:53,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1888 transitions. [2023-01-27 22:01:53,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:01:53,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1888 transitions. [2023-01-27 22:01:53,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.86666666666666) internal successors, (1888), 15 states have internal predecessors, (1888), 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) [2023-01-27 22:01:53,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 353.0) internal successors, (5648), 16 states have internal predecessors, (5648), 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) [2023-01-27 22:01:53,641 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 353.0) internal successors, (5648), 16 states have internal predecessors, (5648), 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) [2023-01-27 22:01:53,641 INFO L175 Difference]: Start difference. First operand has 318 places, 779 transitions, 14356 flow. Second operand 15 states and 1888 transitions. [2023-01-27 22:01:53,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 1077 transitions, 21954 flow [2023-01-27 22:01:54,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1077 transitions, 20028 flow, removed 656 selfloop flow, removed 11 redundant places. [2023-01-27 22:01:54,610 INFO L231 Difference]: Finished difference. Result has 328 places, 913 transitions, 16650 flow [2023-01-27 22:01:54,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=12772, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=16650, PETRI_PLACES=328, PETRI_TRANSITIONS=913} [2023-01-27 22:01:54,611 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2023-01-27 22:01:54,611 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 913 transitions, 16650 flow [2023-01-27 22:01:54,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 120.2) internal successors, (2404), 20 states have internal predecessors, (2404), 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) [2023-01-27 22:01:54,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:01:54,612 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:01:54,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-01-27 22:01:54,812 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 [2023-01-27 22:01:54,812 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:01:54,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:01:54,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1999441316, now seen corresponding path program 18 times [2023-01-27 22:01:54,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:01:54,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778699590] [2023-01-27 22:01:54,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:01:54,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:01:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:01:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 22:01:54,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:01:54,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778699590] [2023-01-27 22:01:54,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778699590] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:01:54,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363514136] [2023-01-27 22:01:54,925 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 22:01:54,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:01:54,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:01:54,931 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) [2023-01-27 22:01:54,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-01-27 22:01:55,118 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-27 22:01:55,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:01:55,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:01:55,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:01:55,210 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 22:01:55,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:01:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 22:01:55,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363514136] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:01:55,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:01:55,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-01-27 22:01:55,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151201192] [2023-01-27 22:01:55,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:01:55,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 22:01:55,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:01:55,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 22:01:55,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-01-27 22:01:55,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-27 22:01:55,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 913 transitions, 16650 flow. Second operand has 20 states, 20 states have (on average 120.2) internal successors, (2404), 20 states have internal predecessors, (2404), 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) [2023-01-27 22:01:55,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:01:55,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-27 22:01:55,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:01:58,082 INFO L130 PetriNetUnfolder]: 5220/8343 cut-off events. [2023-01-27 22:01:58,082 INFO L131 PetriNetUnfolder]: For 223952/224067 co-relation queries the response was YES. [2023-01-27 22:01:58,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81851 conditions, 8343 events. 5220/8343 cut-off events. For 223952/224067 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 51860 event pairs, 514 based on Foata normal form. 75/8400 useless extension candidates. Maximal degree in co-relation 81717. Up to 2937 conditions per place. [2023-01-27 22:01:58,173 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 653 selfloop transitions, 503 changer transitions 0/1194 dead transitions. [2023-01-27 22:01:58,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 1194 transitions, 24337 flow [2023-01-27 22:01:58,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-27 22:01:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-27 22:01:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2401 transitions. [2023-01-27 22:01:58,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35798419561652006 [2023-01-27 22:01:58,175 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2401 transitions. [2023-01-27 22:01:58,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2401 transitions. [2023-01-27 22:01:58,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:01:58,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2401 transitions. [2023-01-27 22:01:58,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 126.36842105263158) internal successors, (2401), 19 states have internal predecessors, (2401), 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) [2023-01-27 22:01:58,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 353.0) internal successors, (7060), 20 states have internal predecessors, (7060), 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) [2023-01-27 22:01:58,180 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 353.0) internal successors, (7060), 20 states have internal predecessors, (7060), 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) [2023-01-27 22:01:58,180 INFO L175 Difference]: Start difference. First operand has 328 places, 913 transitions, 16650 flow. Second operand 19 states and 2401 transitions. [2023-01-27 22:01:58,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 1194 transitions, 24337 flow [2023-01-27 22:01:59,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 1194 transitions, 23973 flow, removed 164 selfloop flow, removed 6 redundant places. [2023-01-27 22:01:59,473 INFO L231 Difference]: Finished difference. Result has 346 places, 992 transitions, 19914 flow [2023-01-27 22:01:59,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=16280, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=911, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=19914, PETRI_PLACES=346, PETRI_TRANSITIONS=992} [2023-01-27 22:01:59,474 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2023-01-27 22:01:59,474 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 992 transitions, 19914 flow [2023-01-27 22:01:59,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 120.2) internal successors, (2404), 20 states have internal predecessors, (2404), 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) [2023-01-27 22:01:59,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:01:59,474 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:01:59,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-01-27 22:01:59,674 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 [2023-01-27 22:01:59,675 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:01:59,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:01:59,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2058981304, now seen corresponding path program 19 times [2023-01-27 22:01:59,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:01:59,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222745043] [2023-01-27 22:01:59,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:01:59,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:01:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:01:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:01:59,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:01:59,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222745043] [2023-01-27 22:01:59,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222745043] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:01:59,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065092078] [2023-01-27 22:01:59,786 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 22:01:59,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:01:59,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:01:59,789 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) [2023-01-27 22:01:59,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-01-27 22:01:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:01:59,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:01:59,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:02:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:02:00,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:02:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:02:00,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065092078] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:02:00,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:02:00,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-01-27 22:02:00,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142714966] [2023-01-27 22:02:00,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:02:00,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 22:02:00,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:02:00,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 22:02:00,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-01-27 22:02:00,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-27 22:02:00,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 992 transitions, 19914 flow. Second operand has 18 states, 18 states have (on average 120.44444444444444) internal successors, (2168), 18 states have internal predecessors, (2168), 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) [2023-01-27 22:02:00,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:02:00,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-27 22:02:00,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:02:02,885 INFO L130 PetriNetUnfolder]: 5148/8230 cut-off events. [2023-01-27 22:02:02,885 INFO L131 PetriNetUnfolder]: For 247984/248087 co-relation queries the response was YES. [2023-01-27 22:02:02,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84492 conditions, 8230 events. 5148/8230 cut-off events. For 247984/248087 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 50848 event pairs, 841 based on Foata normal form. 87/8307 useless extension candidates. Maximal degree in co-relation 84354. Up to 4387 conditions per place. [2023-01-27 22:02:02,993 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 802 selfloop transitions, 267 changer transitions 0/1106 dead transitions. [2023-01-27 22:02:02,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1106 transitions, 24119 flow [2023-01-27 22:02:02,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 22:02:02,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 22:02:02,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1251 transitions. [2023-01-27 22:02:02,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35439093484419265 [2023-01-27 22:02:02,995 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1251 transitions. [2023-01-27 22:02:02,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1251 transitions. [2023-01-27 22:02:02,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:02:02,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1251 transitions. [2023-01-27 22:02:02,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 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) [2023-01-27 22:02:02,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 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) [2023-01-27 22:02:02,998 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 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) [2023-01-27 22:02:02,998 INFO L175 Difference]: Start difference. First operand has 346 places, 992 transitions, 19914 flow. Second operand 10 states and 1251 transitions. [2023-01-27 22:02:02,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1106 transitions, 24119 flow [2023-01-27 22:02:04,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1106 transitions, 22799 flow, removed 271 selfloop flow, removed 20 redundant places. [2023-01-27 22:02:04,656 INFO L231 Difference]: Finished difference. Result has 329 places, 983 transitions, 19476 flow [2023-01-27 22:02:04,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=18024, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19476, PETRI_PLACES=329, PETRI_TRANSITIONS=983} [2023-01-27 22:02:04,657 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2023-01-27 22:02:04,657 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 983 transitions, 19476 flow [2023-01-27 22:02:04,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 120.44444444444444) internal successors, (2168), 18 states have internal predecessors, (2168), 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) [2023-01-27 22:02:04,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:02:04,658 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:02:04,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-01-27 22:02:04,858 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 [2023-01-27 22:02:04,859 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:02:04,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:02:04,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1537945544, now seen corresponding path program 20 times [2023-01-27 22:02:04,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:02:04,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400233149] [2023-01-27 22:02:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:02:04,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:02:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:02:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 22:02:04,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:02:04,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400233149] [2023-01-27 22:02:04,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400233149] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:02:04,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781889909] [2023-01-27 22:02:04,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:02:04,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:02:04,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:02:04,965 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) [2023-01-27 22:02:04,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-01-27 22:02:05,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:02:05,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:02:05,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:02:05,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:02:05,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 22:02:05,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:02:05,274 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 22:02:05,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781889909] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:02:05,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:02:05,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-01-27 22:02:05,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392075815] [2023-01-27 22:02:05,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:02:05,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-27 22:02:05,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:02:05,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-27 22:02:05,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-01-27 22:02:05,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-27 22:02:05,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 983 transitions, 19476 flow. Second operand has 21 states, 21 states have (on average 119.95238095238095) internal successors, (2519), 21 states have internal predecessors, (2519), 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) [2023-01-27 22:02:05,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:02:05,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-27 22:02:05,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:02:07,903 INFO L130 PetriNetUnfolder]: 5100/8131 cut-off events. [2023-01-27 22:02:07,904 INFO L131 PetriNetUnfolder]: For 240212/240299 co-relation queries the response was YES. [2023-01-27 22:02:07,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82978 conditions, 8131 events. 5100/8131 cut-off events. For 240212/240299 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 49891 event pairs, 839 based on Foata normal form. 69/8194 useless extension candidates. Maximal degree in co-relation 82842. Up to 4221 conditions per place. [2023-01-27 22:02:07,996 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 681 selfloop transitions, 365 changer transitions 0/1083 dead transitions. [2023-01-27 22:02:07,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 1083 transitions, 23229 flow [2023-01-27 22:02:07,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 22:02:07,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 22:02:07,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1384 transitions. [2023-01-27 22:02:07,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35642544424414113 [2023-01-27 22:02:07,998 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1384 transitions. [2023-01-27 22:02:07,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1384 transitions. [2023-01-27 22:02:07,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:02:07,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1384 transitions. [2023-01-27 22:02:08,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 125.81818181818181) internal successors, (1384), 11 states have internal predecessors, (1384), 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) [2023-01-27 22:02:08,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 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) [2023-01-27 22:02:08,002 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 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) [2023-01-27 22:02:08,002 INFO L175 Difference]: Start difference. First operand has 329 places, 983 transitions, 19476 flow. Second operand 11 states and 1384 transitions. [2023-01-27 22:02:08,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 1083 transitions, 23229 flow [2023-01-27 22:02:09,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1083 transitions, 22878 flow, removed 93 selfloop flow, removed 5 redundant places. [2023-01-27 22:02:09,288 INFO L231 Difference]: Finished difference. Result has 333 places, 982 transitions, 19839 flow [2023-01-27 22:02:09,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19109, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=982, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19839, PETRI_PLACES=333, PETRI_TRANSITIONS=982} [2023-01-27 22:02:09,289 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2023-01-27 22:02:09,289 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 982 transitions, 19839 flow [2023-01-27 22:02:09,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 119.95238095238095) internal successors, (2519), 21 states have internal predecessors, (2519), 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) [2023-01-27 22:02:09,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:02:09,289 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:02:09,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-01-27 22:02:09,493 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 [2023-01-27 22:02:09,493 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:02:09,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:02:09,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1116558660, now seen corresponding path program 21 times [2023-01-27 22:02:09,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:02:09,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507763969] [2023-01-27 22:02:09,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:02:09,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:02:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:02:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 22:02:09,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:02:09,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507763969] [2023-01-27 22:02:09,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507763969] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:02:09,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277770221] [2023-01-27 22:02:09,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 22:02:09,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:02:09,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:02:09,601 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) [2023-01-27 22:02:09,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-01-27 22:02:09,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 22:02:09,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:02:09,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:02:09,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:02:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 22:02:09,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:02:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 22:02:09,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277770221] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:02:09,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:02:09,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-01-27 22:02:09,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540212979] [2023-01-27 22:02:09,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:02:09,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 22:02:09,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:02:09,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 22:02:09,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-01-27 22:02:09,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-27 22:02:09,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 982 transitions, 19839 flow. Second operand has 19 states, 19 states have (on average 120.15789473684211) internal successors, (2283), 19 states have internal predecessors, (2283), 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) [2023-01-27 22:02:09,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:02:09,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-27 22:02:09,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:02:12,526 INFO L130 PetriNetUnfolder]: 5019/7953 cut-off events. [2023-01-27 22:02:12,526 INFO L131 PetriNetUnfolder]: For 244884/244971 co-relation queries the response was YES. [2023-01-27 22:02:12,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81842 conditions, 7953 events. 5019/7953 cut-off events. For 244884/244971 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 48070 event pairs, 877 based on Foata normal form. 85/8028 useless extension candidates. Maximal degree in co-relation 81706. Up to 4387 conditions per place. [2023-01-27 22:02:12,792 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 702 selfloop transitions, 298 changer transitions 0/1036 dead transitions. [2023-01-27 22:02:12,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 1036 transitions, 22821 flow [2023-01-27 22:02:12,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 22:02:12,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 22:02:12,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1251 transitions. [2023-01-27 22:02:12,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35439093484419265 [2023-01-27 22:02:12,794 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1251 transitions. [2023-01-27 22:02:12,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1251 transitions. [2023-01-27 22:02:12,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:02:12,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1251 transitions. [2023-01-27 22:02:12,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 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) [2023-01-27 22:02:12,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 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) [2023-01-27 22:02:12,797 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 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) [2023-01-27 22:02:12,797 INFO L175 Difference]: Start difference. First operand has 333 places, 982 transitions, 19839 flow. Second operand 10 states and 1251 transitions. [2023-01-27 22:02:12,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 1036 transitions, 22821 flow [2023-01-27 22:02:14,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 1036 transitions, 22186 flow, removed 45 selfloop flow, removed 10 redundant places. [2023-01-27 22:02:14,032 INFO L231 Difference]: Finished difference. Result has 327 places, 958 transitions, 19481 flow [2023-01-27 22:02:14,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=18694, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=953, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19481, PETRI_PLACES=327, PETRI_TRANSITIONS=958} [2023-01-27 22:02:14,035 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2023-01-27 22:02:14,035 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 958 transitions, 19481 flow [2023-01-27 22:02:14,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 120.15789473684211) internal successors, (2283), 19 states have internal predecessors, (2283), 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) [2023-01-27 22:02:14,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:02:14,036 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:02:14,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-01-27 22:02:14,237 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 [2023-01-27 22:02:14,237 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:02:14,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:02:14,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1471763192, now seen corresponding path program 22 times [2023-01-27 22:02:14,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:02:14,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987739857] [2023-01-27 22:02:14,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:02:14,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:02:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:02:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:02:14,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:02:14,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987739857] [2023-01-27 22:02:14,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987739857] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:02:14,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428548465] [2023-01-27 22:02:14,361 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:02:14,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:02:14,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:02:14,365 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) [2023-01-27 22:02:14,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-01-27 22:02:14,533 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:02:14,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:02:14,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:02:14,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:02:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:02:14,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:02:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:02:14,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428548465] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:02:14,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:02:14,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-01-27 22:02:14,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050478032] [2023-01-27 22:02:14,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:02:14,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-27 22:02:14,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:02:14,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-27 22:02:14,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-01-27 22:02:14,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-27 22:02:14,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 958 transitions, 19481 flow. Second operand has 21 states, 21 states have (on average 120.23809523809524) internal successors, (2525), 21 states have internal predecessors, (2525), 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) [2023-01-27 22:02:14,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:02:14,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-27 22:02:14,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:02:17,488 INFO L130 PetriNetUnfolder]: 4936/7811 cut-off events. [2023-01-27 22:02:17,489 INFO L131 PetriNetUnfolder]: For 243527/243620 co-relation queries the response was YES. [2023-01-27 22:02:17,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80534 conditions, 7811 events. 4936/7811 cut-off events. For 243527/243620 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 47012 event pairs, 526 based on Foata normal form. 103/7890 useless extension candidates. Maximal degree in co-relation 80398. Up to 2911 conditions per place. [2023-01-27 22:02:17,577 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 604 selfloop transitions, 498 changer transitions 0/1137 dead transitions. [2023-01-27 22:02:17,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1137 transitions, 24707 flow [2023-01-27 22:02:17,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 22:02:17,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 22:02:17,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2028 transitions. [2023-01-27 22:02:17,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3590651558073654 [2023-01-27 22:02:17,580 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2028 transitions. [2023-01-27 22:02:17,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2028 transitions. [2023-01-27 22:02:17,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:02:17,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2028 transitions. [2023-01-27 22:02:17,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 126.75) internal successors, (2028), 16 states have internal predecessors, (2028), 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) [2023-01-27 22:02:17,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 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) [2023-01-27 22:02:17,584 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 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) [2023-01-27 22:02:17,584 INFO L175 Difference]: Start difference. First operand has 327 places, 958 transitions, 19481 flow. Second operand 16 states and 2028 transitions. [2023-01-27 22:02:17,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 1137 transitions, 24707 flow [2023-01-27 22:02:18,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 1137 transitions, 24396 flow, removed 46 selfloop flow, removed 7 redundant places. [2023-01-27 22:02:18,827 INFO L231 Difference]: Finished difference. Result has 332 places, 958 transitions, 20411 flow [2023-01-27 22:02:18,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19090, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=486, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=20411, PETRI_PLACES=332, PETRI_TRANSITIONS=958} [2023-01-27 22:02:18,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2023-01-27 22:02:18,829 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 958 transitions, 20411 flow [2023-01-27 22:02:18,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 120.23809523809524) internal successors, (2525), 21 states have internal predecessors, (2525), 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) [2023-01-27 22:02:18,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:02:18,830 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:02:18,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-01-27 22:02:19,035 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 [2023-01-27 22:02:19,036 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:02:19,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:02:19,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1034104112, now seen corresponding path program 23 times [2023-01-27 22:02:19,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:02:19,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813330945] [2023-01-27 22:02:19,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:02:19,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:02:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:02:19,194 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 22:02:19,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:02:19,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813330945] [2023-01-27 22:02:19,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813330945] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:02:19,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139417875] [2023-01-27 22:02:19,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 22:02:19,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:02:19,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:02:19,197 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) [2023-01-27 22:02:19,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-01-27 22:02:19,368 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:02:19,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:02:19,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:02:19,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:02:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 22:02:19,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:02:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 22:02:19,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139417875] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:02:19,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:02:19,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2023-01-27 22:02:19,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400914555] [2023-01-27 22:02:19,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:02:19,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 22:02:19,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:02:19,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 22:02:19,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-01-27 22:02:19,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 353 [2023-01-27 22:02:19,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 958 transitions, 20411 flow. Second operand has 17 states, 17 states have (on average 117.6470588235294) internal successors, (2000), 17 states have internal predecessors, (2000), 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) [2023-01-27 22:02:19,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:02:19,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 353 [2023-01-27 22:02:19,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:02:22,404 INFO L130 PetriNetUnfolder]: 4976/7810 cut-off events. [2023-01-27 22:02:22,405 INFO L131 PetriNetUnfolder]: For 245461/245461 co-relation queries the response was YES. [2023-01-27 22:02:22,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81765 conditions, 7810 events. 4976/7810 cut-off events. For 245461/245461 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 45950 event pairs, 345 based on Foata normal form. 46/7853 useless extension candidates. Maximal degree in co-relation 81630. Up to 2863 conditions per place. [2023-01-27 22:02:22,531 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 584 selfloop transitions, 569 changer transitions 0/1153 dead transitions. [2023-01-27 22:02:22,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1153 transitions, 26748 flow [2023-01-27 22:02:22,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-27 22:02:22,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-27 22:02:22,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2438 transitions. [2023-01-27 22:02:22,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3453257790368272 [2023-01-27 22:02:22,534 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2438 transitions. [2023-01-27 22:02:22,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2438 transitions. [2023-01-27 22:02:22,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:02:22,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2438 transitions. [2023-01-27 22:02:22,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 121.9) internal successors, (2438), 20 states have internal predecessors, (2438), 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) [2023-01-27 22:02:22,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 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) [2023-01-27 22:02:22,550 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 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) [2023-01-27 22:02:22,550 INFO L175 Difference]: Start difference. First operand has 332 places, 958 transitions, 20411 flow. Second operand 20 states and 2438 transitions. [2023-01-27 22:02:22,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1153 transitions, 26748 flow [2023-01-27 22:02:24,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 1153 transitions, 25541 flow, removed 94 selfloop flow, removed 12 redundant places. [2023-01-27 22:02:24,151 INFO L231 Difference]: Finished difference. Result has 341 places, 993 transitions, 21826 flow [2023-01-27 22:02:24,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19320, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=533, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=21826, PETRI_PLACES=341, PETRI_TRANSITIONS=993} [2023-01-27 22:02:24,152 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2023-01-27 22:02:24,153 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 993 transitions, 21826 flow [2023-01-27 22:02:24,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 117.6470588235294) internal successors, (2000), 17 states have internal predecessors, (2000), 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) [2023-01-27 22:02:24,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:02:24,154 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:02:24,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-01-27 22:02:24,360 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 [2023-01-27 22:02:24,361 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:02:24,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:02:24,361 INFO L85 PathProgramCache]: Analyzing trace with hash -844689024, now seen corresponding path program 24 times [2023-01-27 22:02:24,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:02:24,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018380997] [2023-01-27 22:02:24,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:02:24,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:02:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:02:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 22:02:24,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:02:24,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018380997] [2023-01-27 22:02:24,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018380997] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:02:24,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4498592] [2023-01-27 22:02:24,479 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 22:02:24,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:02:24,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:02:24,481 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) [2023-01-27 22:02:24,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-01-27 22:02:24,660 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-27 22:02:24,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:02:24,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 22:02:24,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:02:24,749 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 22:02:24,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:02:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-27 22:02:24,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4498592] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:02:24,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:02:24,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-01-27 22:02:24,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807348022] [2023-01-27 22:02:24,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:02:24,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 22:02:24,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:02:24,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 22:02:24,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-01-27 22:02:24,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-27 22:02:24,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 993 transitions, 21826 flow. Second operand has 19 states, 19 states have (on average 120.15789473684211) internal successors, (2283), 19 states have internal predecessors, (2283), 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) [2023-01-27 22:02:24,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:02:24,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-27 22:02:24,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:02:27,807 INFO L130 PetriNetUnfolder]: 4844/7599 cut-off events. [2023-01-27 22:02:27,807 INFO L131 PetriNetUnfolder]: For 245831/245942 co-relation queries the response was YES. [2023-01-27 22:02:27,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80606 conditions, 7599 events. 4844/7599 cut-off events. For 245831/245942 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 44737 event pairs, 1064 based on Foata normal form. 41/7614 useless extension candidates. Maximal degree in co-relation 80468. Up to 5787 conditions per place. [2023-01-27 22:02:27,894 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 702 selfloop transitions, 298 changer transitions 0/1039 dead transitions. [2023-01-27 22:02:27,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1039 transitions, 24366 flow [2023-01-27 22:02:27,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 22:02:27,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 22:02:27,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1244 transitions. [2023-01-27 22:02:27,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35240793201133147 [2023-01-27 22:02:27,896 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1244 transitions. [2023-01-27 22:02:27,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1244 transitions. [2023-01-27 22:02:27,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:02:27,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1244 transitions. [2023-01-27 22:02:27,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.4) internal successors, (1244), 10 states have internal predecessors, (1244), 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) [2023-01-27 22:02:27,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 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) [2023-01-27 22:02:27,899 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 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) [2023-01-27 22:02:27,899 INFO L175 Difference]: Start difference. First operand has 341 places, 993 transitions, 21826 flow. Second operand 10 states and 1244 transitions. [2023-01-27 22:02:27,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1039 transitions, 24366 flow [2023-01-27 22:02:29,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 1039 transitions, 24002 flow, removed 102 selfloop flow, removed 6 redundant places. [2023-01-27 22:02:29,433 INFO L231 Difference]: Finished difference. Result has 345 places, 994 transitions, 22014 flow [2023-01-27 22:02:29,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=21237, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22014, PETRI_PLACES=345, PETRI_TRANSITIONS=994} [2023-01-27 22:02:29,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2023-01-27 22:02:29,435 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 994 transitions, 22014 flow [2023-01-27 22:02:29,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 120.15789473684211) internal successors, (2283), 19 states have internal predecessors, (2283), 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) [2023-01-27 22:02:29,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:02:29,436 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:02:29,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-01-27 22:02:29,641 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 [2023-01-27 22:02:29,642 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:02:29,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:02:29,642 INFO L85 PathProgramCache]: Analyzing trace with hash 964857070, now seen corresponding path program 6 times [2023-01-27 22:02:29,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:02:29,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637424705] [2023-01-27 22:02:29,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:02:29,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:02:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:02:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:02:31,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:02:31,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637424705] [2023-01-27 22:02:31,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637424705] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:02:31,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746890531] [2023-01-27 22:02:31,167 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 22:02:31,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:02:31,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:02:31,168 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) [2023-01-27 22:02:31,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-01-27 22:02:31,319 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-27 22:02:31,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:02:31,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 118 conjunts are in the unsatisfiable core [2023-01-27 22:02:31,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:02:31,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:02:31,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:02:31,358 INFO L321 Elim1Store]: treesize reduction 55, result has 25.7 percent of original size [2023-01-27 22:02:31,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2023-01-27 22:02:31,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:02:31,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:02:31,568 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-01-27 22:02:31,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 37 [2023-01-27 22:02:31,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 22:02:31,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:02:32,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:02:32,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:02:32,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2023-01-27 22:02:32,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:02:32,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:02:32,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2023-01-27 22:02:32,302 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:02:32,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:02:32,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 15 [2023-01-27 22:02:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:02:32,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:02:32,558 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int))) (or (= (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse0 (select .cse3 c_~A~0.base)) (.cse1 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4)) (.cse2 (select .cse3 c_~B~0.base))) (+ (select .cse0 (+ c_~A~0.offset .cse1)) (select .cse0 c_~A~0.offset) c_~res2~0 (select .cse2 (+ .cse1 c_~B~0.offset)) (select .cse2 c_~B~0.offset)))) c_~res1~0) (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1))) is different from false [2023-01-27 22:02:32,593 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int))) (or (= c_~res1~0 (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse1 (select .cse3 c_~A~0.base)) (.cse0 (select .cse3 c_~B~0.base)) (.cse2 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4))) (+ (select .cse0 c_~B~0.offset) c_~res2~0 (select .cse1 c_~A~0.offset) (select .cse1 (+ c_~A~0.offset .cse2)) (select .cse0 (+ .cse2 c_~B~0.offset)))))) (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1))) is different from false [2023-01-27 22:02:32,616 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int))) (or (= (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse1 (select .cse3 c_~A~0.base)) (.cse0 (select .cse3 c_~B~0.base)) (.cse2 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4))) (+ (select .cse0 c_~B~0.offset) c_~res2~0 (select .cse1 c_~A~0.offset) (select .cse1 (+ c_~A~0.offset .cse2)) (select .cse0 (+ .cse2 c_~B~0.offset))))) (let ((.cse4 (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) (+ (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset .cse4)) (select (select |c_#memory_int| c_~B~0.base) (+ c_~B~0.offset .cse4)) c_~res1~0))) (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1))) is different from false [2023-01-27 22:02:32,722 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int))) (or (= (let ((.cse0 (select |c_#memory_int| c_~A~0.base)) (.cse1 (select |c_#memory_int| c_~B~0.base))) (+ (select .cse0 c_~A~0.offset) (select .cse1 c_~B~0.offset) c_~res1~0 (select .cse0 (+ c_~A~0.offset 4)) (select .cse1 (+ 4 c_~B~0.offset)))) (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse3 (select .cse5 c_~A~0.base)) (.cse2 (select .cse5 c_~B~0.base)) (.cse4 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4))) (+ (select .cse2 c_~B~0.offset) c_~res2~0 (select .cse3 c_~A~0.offset) (select .cse3 (+ c_~A~0.offset .cse4)) (select .cse2 (+ .cse4 c_~B~0.offset)))))) (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1))) is different from false [2023-01-27 22:02:32,753 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int)) (v_ArrVal_1760 (Array Int Int))) (or (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1760))) (= (let ((.cse1 (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse0 (select .cse2 c_~A~0.base))) (+ (select .cse0 (+ c_~A~0.offset 4)) c_~res1~0 (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (select .cse1 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse0 c_~A~0.offset))) (let ((.cse6 (store (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse3 (select .cse6 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse5 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4)) (.cse4 (select .cse6 c_~A~0.base))) (+ (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (select .cse4 (+ c_~A~0.offset .cse5)) (select .cse3 (+ .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~res2~0 (select .cse4 c_~A~0.offset)))))))) is different from false [2023-01-27 22:02:32,766 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:02:32,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 201 treesize of output 118 [2023-01-27 22:02:33,000 INFO L321 Elim1Store]: treesize reduction 16, result has 89.7 percent of original size [2023-01-27 22:02:33,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110582 treesize of output 86145 [2023-01-27 22:02:33,261 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:02:33,262 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:02:33,290 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:02:33,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 2614 treesize of output 2398 [2023-01-27 22:02:33,326 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:02:33,326 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:02:33,418 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:02:33,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 2358 treesize of output 2022 [2023-01-27 22:02:33,474 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:02:33,475 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:02:33,514 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:02:33,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1910 treesize of output 1438 [2023-01-27 22:03:22,053 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 22:03:35,592 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 22:03:40,764 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 22:05:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2023-01-27 22:05:40,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746890531] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:05:40,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:05:40,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 15] total 42 [2023-01-27 22:05:40,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273703658] [2023-01-27 22:05:40,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:05:40,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-01-27 22:05:40,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:05:40,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-01-27 22:05:40,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1337, Unknown=7, NotChecked=390, Total=1892 [2023-01-27 22:05:40,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-01-27 22:05:40,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 994 transitions, 22014 flow. Second operand has 44 states, 44 states have (on average 83.54545454545455) internal successors, (3676), 44 states have internal predecessors, (3676), 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) [2023-01-27 22:05:40,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:05:40,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-01-27 22:05:40,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:05:47,536 INFO L130 PetriNetUnfolder]: 7755/12152 cut-off events. [2023-01-27 22:05:47,537 INFO L131 PetriNetUnfolder]: For 424246/424246 co-relation queries the response was YES. [2023-01-27 22:05:47,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132468 conditions, 12152 events. 7755/12152 cut-off events. For 424246/424246 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 76776 event pairs, 639 based on Foata normal form. 13/12159 useless extension candidates. Maximal degree in co-relation 132329. Up to 7555 conditions per place. [2023-01-27 22:05:47,698 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 1029 selfloop transitions, 765 changer transitions 16/1810 dead transitions. [2023-01-27 22:05:47,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 1810 transitions, 44533 flow [2023-01-27 22:05:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-01-27 22:05:47,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-01-27 22:05:47,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2536 transitions. [2023-01-27 22:05:47,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2565762849048968 [2023-01-27 22:05:47,700 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2536 transitions. [2023-01-27 22:05:47,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2536 transitions. [2023-01-27 22:05:47,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:05:47,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2536 transitions. [2023-01-27 22:05:47,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 90.57142857142857) internal successors, (2536), 28 states have internal predecessors, (2536), 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) [2023-01-27 22:05:47,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 353.0) internal successors, (10237), 29 states have internal predecessors, (10237), 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) [2023-01-27 22:05:47,706 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 353.0) internal successors, (10237), 29 states have internal predecessors, (10237), 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) [2023-01-27 22:05:47,706 INFO L175 Difference]: Start difference. First operand has 345 places, 994 transitions, 22014 flow. Second operand 28 states and 2536 transitions. [2023-01-27 22:05:47,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 1810 transitions, 44533 flow [2023-01-27 22:05:51,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 1810 transitions, 43349 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-27 22:05:51,169 INFO L231 Difference]: Finished difference. Result has 377 places, 1524 transitions, 37404 flow [2023-01-27 22:05:51,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=21444, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=994, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=37404, PETRI_PLACES=377, PETRI_TRANSITIONS=1524} [2023-01-27 22:05:51,170 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2023-01-27 22:05:51,170 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 1524 transitions, 37404 flow [2023-01-27 22:05:51,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 83.54545454545455) internal successors, (3676), 44 states have internal predecessors, (3676), 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) [2023-01-27 22:05:51,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:05:51,170 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:05:51,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-01-27 22:05:51,371 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 [2023-01-27 22:05:51,371 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:05:51,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:05:51,371 INFO L85 PathProgramCache]: Analyzing trace with hash 66394832, now seen corresponding path program 7 times [2023-01-27 22:05:51,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:05:51,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11301447] [2023-01-27 22:05:51,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:05:51,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:05:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:05:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:05:52,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:05:52,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11301447] [2023-01-27 22:05:52,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11301447] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:05:52,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415065556] [2023-01-27 22:05:52,322 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 22:05:52,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:05:52,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:05:52,324 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:05:52,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-01-27 22:05:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:05:52,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 89 conjunts are in the unsatisfiable core [2023-01-27 22:05:52,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:05:52,867 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:05:52,887 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2023-01-27 22:05:52,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 37 [2023-01-27 22:05:52,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:05:52,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:05:53,398 INFO L321 Elim1Store]: treesize reduction 16, result has 95.1 percent of original size [2023-01-27 22:05:53,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 71 treesize of output 326 [2023-01-27 22:06:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:06:22,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415065556] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:06:22,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:06:22,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 30 [2023-01-27 22:06:22,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140129601] [2023-01-27 22:06:22,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:06:22,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-27 22:06:22,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:06:22,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-27 22:06:22,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2023-01-27 22:06:22,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 353 [2023-01-27 22:06:22,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 1524 transitions, 37404 flow. Second operand has 32 states, 32 states have (on average 97.96875) internal successors, (3135), 32 states have internal predecessors, (3135), 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) [2023-01-27 22:06:22,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:06:22,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 353 [2023-01-27 22:06:22,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:06:29,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:06:31,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 22:06:36,767 INFO L130 PetriNetUnfolder]: 11680/18604 cut-off events. [2023-01-27 22:06:36,767 INFO L131 PetriNetUnfolder]: For 768498/768498 co-relation queries the response was YES. [2023-01-27 22:06:36,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214074 conditions, 18604 events. 11680/18604 cut-off events. For 768498/768498 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 130404 event pairs, 546 based on Foata normal form. 12/18615 useless extension candidates. Maximal degree in co-relation 213922. Up to 9991 conditions per place. [2023-01-27 22:06:37,004 INFO L137 encePairwiseOnDemand]: 336/353 looper letters, 1215 selfloop transitions, 1630 changer transitions 21/2866 dead transitions. [2023-01-27 22:06:37,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 2866 transitions, 73839 flow [2023-01-27 22:06:37,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-01-27 22:06:37,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-01-27 22:06:37,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 5478 transitions. [2023-01-27 22:06:37,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2984310307256483 [2023-01-27 22:06:37,008 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 5478 transitions. [2023-01-27 22:06:37,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 5478 transitions. [2023-01-27 22:06:37,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:06:37,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 5478 transitions. [2023-01-27 22:06:37,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 105.34615384615384) internal successors, (5478), 52 states have internal predecessors, (5478), 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) [2023-01-27 22:06:37,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 353.0) internal successors, (18709), 53 states have internal predecessors, (18709), 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) [2023-01-27 22:06:37,020 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 353.0) internal successors, (18709), 53 states have internal predecessors, (18709), 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) [2023-01-27 22:06:37,020 INFO L175 Difference]: Start difference. First operand has 377 places, 1524 transitions, 37404 flow. Second operand 52 states and 5478 transitions. [2023-01-27 22:06:37,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 2866 transitions, 73839 flow [2023-01-27 22:06:43,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 2866 transitions, 71805 flow, removed 1009 selfloop flow, removed 5 redundant places. [2023-01-27 22:06:43,675 INFO L231 Difference]: Finished difference. Result has 450 places, 2499 transitions, 67777 flow [2023-01-27 22:06:43,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=36352, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=771, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=67777, PETRI_PLACES=450, PETRI_TRANSITIONS=2499} [2023-01-27 22:06:43,676 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 419 predicate places. [2023-01-27 22:06:43,676 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 2499 transitions, 67777 flow [2023-01-27 22:06:43,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 97.96875) internal successors, (3135), 32 states have internal predecessors, (3135), 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) [2023-01-27 22:06:43,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:06:43,677 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:06:43,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-01-27 22:06:43,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:43,877 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:06:43,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:06:43,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1612068568, now seen corresponding path program 8 times [2023-01-27 22:06:43,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:06:43,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413719961] [2023-01-27 22:06:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:06:43,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:06:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:06:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:06:45,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:06:45,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413719961] [2023-01-27 22:06:45,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413719961] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:06:45,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360327974] [2023-01-27 22:06:45,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:06:45,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:06:45,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:06:45,189 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:06:45,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-01-27 22:06:45,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:06:45,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:06:45,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 106 conjunts are in the unsatisfiable core [2023-01-27 22:06:45,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:06:45,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 22:06:45,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:06:45,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:06:45,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 22:06:46,175 INFO L321 Elim1Store]: treesize reduction 48, result has 54.3 percent of original size [2023-01-27 22:06:46,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 71 [2023-01-27 22:06:46,290 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:06:46,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:08:31,654 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:31,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 86 [2023-01-27 22:08:31,697 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:31,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20470 treesize of output 18750 [2023-01-27 22:08:31,906 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:31,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2326 treesize of output 1746 [2023-01-27 22:08:31,980 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:31,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1686 treesize of output 1426 [2023-01-27 22:08:32,057 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:08:32,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1366 treesize of output 1266 Received shutdown request... [2023-01-27 22:08:36,087 WARN L238 SmtUtils]: Removed 1 from assertion stack [2023-01-27 22:08:36,090 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 [2023-01-27 22:08:36,090 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 22:08:36,091 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 22:08:36,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-01-27 22:08:36,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-01-27 22:08:36,298 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-41-4-3-3-2-4-3-2-3-2-2-2-2-1 context. [2023-01-27 22:08:36,300 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 22:08:36,300 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 22:08:36,301 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 22:08:36,301 INFO L445 BasicCegarLoop]: Path program histogram: [24, 8, 1, 1, 1] [2023-01-27 22:08:36,305 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 22:08:36,305 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 22:08:36,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 10:08:36 BasicIcfg [2023-01-27 22:08:36,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 22:08:36,308 INFO L158 Benchmark]: Toolchain (without parser) took 791957.03ms. Allocated memory was 534.8MB in the beginning and 12.2GB in the end (delta: 11.7GB). Free memory was 485.7MB in the beginning and 10.0GB in the end (delta: -9.5GB). Peak memory consumption was 2.5GB. Max. memory is 16.0GB. [2023-01-27 22:08:36,308 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 375.4MB. Free memory is still 325.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 22:08:36,309 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.51ms. Allocated memory is still 534.8MB. Free memory was 485.7MB in the beginning and 473.8MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 22:08:36,309 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.76ms. Allocated memory is still 534.8MB. Free memory was 473.8MB in the beginning and 471.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 22:08:36,309 INFO L158 Benchmark]: Boogie Preprocessor took 29.68ms. Allocated memory is still 534.8MB. Free memory was 471.1MB in the beginning and 469.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 22:08:36,309 INFO L158 Benchmark]: RCFGBuilder took 840.80ms. Allocated memory is still 534.8MB. Free memory was 469.0MB in the beginning and 488.0MB in the end (delta: -19.0MB). Peak memory consumption was 57.0MB. Max. memory is 16.0GB. [2023-01-27 22:08:36,309 INFO L158 Benchmark]: TraceAbstraction took 790735.43ms. Allocated memory was 534.8MB in the beginning and 12.2GB in the end (delta: 11.7GB). Free memory was 486.9MB in the beginning and 10.0GB in the end (delta: -9.5GB). Peak memory consumption was 2.5GB. Max. memory is 16.0GB. [2023-01-27 22:08:36,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 375.4MB. Free memory is still 325.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 298.51ms. Allocated memory is still 534.8MB. Free memory was 485.7MB in the beginning and 473.8MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.76ms. Allocated memory is still 534.8MB. Free memory was 473.8MB in the beginning and 471.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.68ms. Allocated memory is still 534.8MB. Free memory was 471.1MB in the beginning and 469.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 840.80ms. Allocated memory is still 534.8MB. Free memory was 469.0MB in the beginning and 488.0MB in the end (delta: -19.0MB). Peak memory consumption was 57.0MB. Max. memory is 16.0GB. * TraceAbstraction took 790735.43ms. Allocated memory was 534.8MB in the beginning and 12.2GB in the end (delta: 11.7GB). Free memory was 486.9MB in the beginning and 10.0GB in the end (delta: -9.5GB). Peak memory consumption was 2.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9s, 161 PlacesBefore, 31 PlacesAfterwards, 167 TransitionsBefore, 26 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 8 FixpointIterations, 105 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 24 TrivialYvCompositions, 6 ConcurrentYvCompositions, 11 ChoiceCompositions, 173 TotalNumberOfCompositions, 1529 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1434, independent: 1416, independent conditional: 0, independent unconditional: 1416, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 698, independent: 690, independent conditional: 0, independent unconditional: 690, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1434, independent: 726, independent conditional: 0, independent unconditional: 726, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 698, unknown conditional: 0, unknown unconditional: 698] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, 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 - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-41-4-3-3-2-4-3-2-3-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-41-4-3-3-2-4-3-2-3-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-41-4-3-3-2-4-3-2-3-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-41-4-3-3-2-4-3-2-3-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 195 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 790.6s, OverallIterations: 35, TraceHistogramMax: 2, PathProgramHistogramMax: 24, EmptinessCheckTime: 0.0s, AutomataDifference: 200.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.0s, HoareTripleCheckerStatistics: 62 mSolverCounterUnknown, 7424 SdHoareTripleChecker+Valid, 20.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7424 mSDsluCounter, 2196 SdHoareTripleChecker+Invalid, 18.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1595 IncrementalHoareTripleChecker+Unchecked, 1981 mSDsCounter, 685 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27838 IncrementalHoareTripleChecker+Invalid, 30180 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 685 mSolverCounterUnsat, 215 mSDtfsCounter, 27838 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2512 GetRequests, 1187 SyntacticMatches, 54 SemanticMatches, 1271 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 13787 ImplicationChecksByTransitivity, 43.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67777occurred in iteration=34, InterpolantAutomatonStates: 768, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 459.4s InterpolantComputationTime, 1725 NumberOfCodeBlocks, 1725 NumberOfCodeBlocksAsserted, 94 NumberOfCheckSat, 2468 ConstructedInterpolants, 59 QuantifiedInterpolants, 25901 SizeOfPredicates, 495 NumberOfNonLiveVariables, 10157 ConjunctsInSsa, 1116 ConjunctsInUnsatCore, 98 InterpolantComputations, 3 PerfectInterpolantSequences, 305/613 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