/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/chl-chromosome-opt-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:00:56,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:00:56,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:00:56,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:00:56,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:00:56,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:00:56,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:00:56,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:00:56,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:00:56,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:00:56,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:00:56,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:00:56,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:00:56,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:00:56,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:00:56,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:00:56,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:00:56,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:00:56,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:00:56,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:00:56,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:00:56,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:00:56,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:00:56,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:00:56,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 20:00:56,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:00:56,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:00:56,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:00:56,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:00:56,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:00:56,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:00:56,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:00:56,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:00:56,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:00:56,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:00:56,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:00:56,890 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 20:00:56,916 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:00:56,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:00:56,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:00:56,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:00:56,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:00:56,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:00:56,918 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:00:56,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:00:56,918 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:00:56,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:00:56,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:00:56,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:00:56,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:00:56,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:00:56,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:00:56,920 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:00:56,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:00:56,920 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:00:56,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:00:56,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:00:56,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:00:56,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:00:56,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:00:56,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:00:56,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:00:56,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:00:56,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:00:56,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:00:56,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:00:56,922 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:00:56,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:00:56,922 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:00:57,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:00:57,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:00:57,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:00:57,143 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:00:57,144 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:00:57,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-01-27 20:00:58,228 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:00:58,359 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:00:58,359 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-01-27 20:00:58,364 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14f99f77a/0a675cf85e3545a2a26bbdc8ac69d525/FLAGa2da80bf2 [2023-01-27 20:00:58,376 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14f99f77a/0a675cf85e3545a2a26bbdc8ac69d525 [2023-01-27 20:00:58,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:00:58,379 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:00:58,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:00:58,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:00:58,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:00:58,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:00:58" (1/1) ... [2023-01-27 20:00:58,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@640d5574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:00:58, skipping insertion in model container [2023-01-27 20:00:58,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:00:58" (1/1) ... [2023-01-27 20:00:58,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:00:58,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:00:58,583 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/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-01-27 20:00:58,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:00:58,597 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:00:58,615 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/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-01-27 20:00:58,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:00:58,640 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:00:58,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:00:58 WrapperNode [2023-01-27 20:00:58,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:00:58,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:00:58,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:00:58,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:00:58,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:00:58" (1/1) ... [2023-01-27 20:00:58,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:00:58" (1/1) ... [2023-01-27 20:00:58,673 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 178 [2023-01-27 20:00:58,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:00:58,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:00:58,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:00:58,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:00:58,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:00:58" (1/1) ... [2023-01-27 20:00:58,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:00:58" (1/1) ... [2023-01-27 20:00:58,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:00:58" (1/1) ... [2023-01-27 20:00:58,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:00:58" (1/1) ... [2023-01-27 20:00:58,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:00:58" (1/1) ... [2023-01-27 20:00:58,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:00:58" (1/1) ... [2023-01-27 20:00:58,699 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:00:58" (1/1) ... [2023-01-27 20:00:58,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:00:58" (1/1) ... [2023-01-27 20:00:58,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:00:58,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:00:58,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:00:58,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:00:58,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:00:58" (1/1) ... [2023-01-27 20:00:58,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:00:58,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:00:58,758 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 20:00:58,767 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 20:00:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:00:58,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:00:58,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:00:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:00:58,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:00:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:00:58,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:00:58,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:00:58,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 20:00:58,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:00:58,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:00:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:00:58,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:00:58,806 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 20:00:58,976 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:00:58,977 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:00:59,289 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:00:59,297 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:00:59,297 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-27 20:00:59,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:00:59 BoogieIcfgContainer [2023-01-27 20:00:59,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:00:59,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:00:59,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:00:59,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:00:59,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:00:58" (1/3) ... [2023-01-27 20:00:59,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2733be67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:00:59, skipping insertion in model container [2023-01-27 20:00:59,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:00:58" (2/3) ... [2023-01-27 20:00:59,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2733be67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:00:59, skipping insertion in model container [2023-01-27 20:00:59,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:00:59" (3/3) ... [2023-01-27 20:00:59,305 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-01-27 20:00:59,319 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:00:59,320 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:00:59,320 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:00:59,377 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 20:00:59,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 199 transitions, 414 flow [2023-01-27 20:00:59,464 INFO L130 PetriNetUnfolder]: 19/197 cut-off events. [2023-01-27 20:00:59,465 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:00:59,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 197 events. 19/197 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 225 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2023-01-27 20:00:59,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 199 transitions, 414 flow [2023-01-27 20:00:59,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 189 transitions, 390 flow [2023-01-27 20:00:59,478 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:00:59,495 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 189 transitions, 390 flow [2023-01-27 20:00:59,498 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 189 transitions, 390 flow [2023-01-27 20:00:59,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 189 transitions, 390 flow [2023-01-27 20:00:59,553 INFO L130 PetriNetUnfolder]: 19/189 cut-off events. [2023-01-27 20:00:59,553 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:00:59,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 189 events. 19/189 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 223 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2023-01-27 20:00:59,558 INFO L119 LiptonReduction]: Number of co-enabled transitions 3332 [2023-01-27 20:01:04,497 INFO L134 LiptonReduction]: Checked pairs total: 3976 [2023-01-27 20:01:04,497 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-01-27 20:01:04,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:01:04,516 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;@56dbc62f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:01:04,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 20:01:04,523 INFO L130 PetriNetUnfolder]: 6/24 cut-off events. [2023-01-27 20:01:04,524 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:01:04,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:04,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:04,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:04,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:04,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1174210109, now seen corresponding path program 1 times [2023-01-27 20:01:04,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:04,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602769168] [2023-01-27 20:01:04,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:04,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:04,916 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 20:01:04,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:04,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602769168] [2023-01-27 20:01:04,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602769168] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:04,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:04,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 20:01:04,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925880154] [2023-01-27 20:01:04,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:04,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:01:04,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:04,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:01:04,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:01:04,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 410 [2023-01-27 20:01:04,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 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 20:01:04,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:04,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 410 [2023-01-27 20:01:04,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:05,037 INFO L130 PetriNetUnfolder]: 91/155 cut-off events. [2023-01-27 20:01:05,037 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-01-27 20:01:05,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 155 events. 91/155 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 377 event pairs, 51 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 275. Up to 151 conditions per place. [2023-01-27 20:01:05,040 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 22 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-01-27 20:01:05,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 118 flow [2023-01-27 20:01:05,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:01:05,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:01:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-01-27 20:01:05,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41544715447154473 [2023-01-27 20:01:05,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-01-27 20:01:05,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-01-27 20:01:05,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:05,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-01-27 20:01:05,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 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 20:01:05,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 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 20:01:05,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 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 20:01:05,068 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 3 states and 511 transitions. [2023-01-27 20:01:05,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 118 flow [2023-01-27 20:01:05,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 20:01:05,072 INFO L231 Difference]: Finished difference. Result has 25 places, 27 transitions, 76 flow [2023-01-27 20:01:05,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=25, PETRI_TRANSITIONS=27} [2023-01-27 20:01:05,080 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-01-27 20:01:05,081 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 27 transitions, 76 flow [2023-01-27 20:01:05,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 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 20:01:05,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:05,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:05,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:01:05,082 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:05,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:05,089 INFO L85 PathProgramCache]: Analyzing trace with hash 505710322, now seen corresponding path program 1 times [2023-01-27 20:01:05,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:05,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334309002] [2023-01-27 20:01:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:05,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:05,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:01:05,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:05,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334309002] [2023-01-27 20:01:05,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334309002] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:01:05,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796136138] [2023-01-27 20:01:05,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:05,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:05,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:01:05,293 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 20:01:05,306 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 20:01:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:05,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 20:01:05,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:01:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:01:05,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:01:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:01:05,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796136138] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:01:05,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:01:05,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-01-27 20:01:05,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212033772] [2023-01-27 20:01:05,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:01:05,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:01:05,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:05,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:01:05,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:01:05,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 410 [2023-01-27 20:01:05,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 27 transitions, 76 flow. Second operand has 8 states, 8 states have (on average 163.875) internal successors, (1311), 8 states have internal predecessors, (1311), 0 states have call successors, (0), 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 20:01:05,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:05,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 410 [2023-01-27 20:01:05,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:05,623 INFO L130 PetriNetUnfolder]: 91/161 cut-off events. [2023-01-27 20:01:05,623 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:01:05,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 161 events. 91/161 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 378 event pairs, 51 based on Foata normal form. 3/123 useless extension candidates. Maximal degree in co-relation 315. Up to 151 conditions per place. [2023-01-27 20:01:05,625 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 22 selfloop transitions, 10 changer transitions 0/33 dead transitions. [2023-01-27 20:01:05,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 164 flow [2023-01-27 20:01:05,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:01:05,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:01:05,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1004 transitions. [2023-01-27 20:01:05,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.408130081300813 [2023-01-27 20:01:05,630 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1004 transitions. [2023-01-27 20:01:05,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1004 transitions. [2023-01-27 20:01:05,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:05,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1004 transitions. [2023-01-27 20:01:05,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.33333333333334) internal successors, (1004), 6 states have internal predecessors, (1004), 0 states have call successors, (0), 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 20:01:05,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 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 20:01:05,640 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 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 20:01:05,640 INFO L175 Difference]: Start difference. First operand has 25 places, 27 transitions, 76 flow. Second operand 6 states and 1004 transitions. [2023-01-27 20:01:05,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 164 flow [2023-01-27 20:01:05,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:01:05,654 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 138 flow [2023-01-27 20:01:05,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2023-01-27 20:01:05,655 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-01-27 20:01:05,655 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 138 flow [2023-01-27 20:01:05,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 163.875) internal successors, (1311), 8 states have internal predecessors, (1311), 0 states have call successors, (0), 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 20:01:05,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:05,656 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:05,667 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 20:01:05,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:05,865 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:05,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:05,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1388696397, now seen corresponding path program 2 times [2023-01-27 20:01:05,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:05,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524986680] [2023-01-27 20:01:05,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:05,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-27 20:01:06,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:06,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524986680] [2023-01-27 20:01:06,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524986680] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:01:06,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067826262] [2023-01-27 20:01:06,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:01:06,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:06,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:01:06,072 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 20:01:06,076 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 20:01:06,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-27 20:01:06,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:01:06,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:01:06,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:01:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:01:06,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:01:06,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067826262] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:06,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:01:06,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-01-27 20:01:06,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490145760] [2023-01-27 20:01:06,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:06,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:01:06,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:06,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:01:06,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:01:06,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 410 [2023-01-27 20:01:06,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 20:01:06,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:06,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 410 [2023-01-27 20:01:06,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:06,335 INFO L130 PetriNetUnfolder]: 195/342 cut-off events. [2023-01-27 20:01:06,335 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 20:01:06,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 342 events. 195/342 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1154 event pairs, 60 based on Foata normal form. 4/263 useless extension candidates. Maximal degree in co-relation 679. Up to 166 conditions per place. [2023-01-27 20:01:06,340 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 53 selfloop transitions, 5 changer transitions 2/60 dead transitions. [2023-01-27 20:01:06,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 60 transitions, 318 flow [2023-01-27 20:01:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:01:06,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:01:06,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 908 transitions. [2023-01-27 20:01:06,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429268292682927 [2023-01-27 20:01:06,344 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 908 transitions. [2023-01-27 20:01:06,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 908 transitions. [2023-01-27 20:01:06,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:06,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 908 transitions. [2023-01-27 20:01:06,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 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 20:01:06,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 0 states have call successors, (0), 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 20:01:06,354 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 0 states have call successors, (0), 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 20:01:06,354 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 138 flow. Second operand 5 states and 908 transitions. [2023-01-27 20:01:06,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 60 transitions, 318 flow [2023-01-27 20:01:06,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 60 transitions, 302 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-27 20:01:06,357 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 146 flow [2023-01-27 20:01:06,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2023-01-27 20:01:06,359 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-01-27 20:01:06,360 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 146 flow [2023-01-27 20:01:06,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 20:01:06,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:06,360 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:06,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 20:01:06,566 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,SelfDestructingSolverStorable2 [2023-01-27 20:01:06,566 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:06,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:06,567 INFO L85 PathProgramCache]: Analyzing trace with hash -860076919, now seen corresponding path program 3 times [2023-01-27 20:01:06,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:06,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856297661] [2023-01-27 20:01:06,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:06,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:06,710 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-27 20:01:06,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:06,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856297661] [2023-01-27 20:01:06,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856297661] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:01:06,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811635605] [2023-01-27 20:01:06,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:01:06,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:06,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:01:06,712 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 20:01:06,739 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 20:01:06,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 20:01:06,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:01:06,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:01:06,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:01:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:01:06,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:01:06,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811635605] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:06,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:01:06,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-01-27 20:01:06,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345661266] [2023-01-27 20:01:06,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:06,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:01:06,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:01:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:01:06,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 410 [2023-01-27 20:01:06,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 20:01:06,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:06,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 410 [2023-01-27 20:01:06,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:06,976 INFO L130 PetriNetUnfolder]: 239/416 cut-off events. [2023-01-27 20:01:06,976 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-01-27 20:01:06,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 416 events. 239/416 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1450 event pairs, 58 based on Foata normal form. 4/351 useless extension candidates. Maximal degree in co-relation 922. Up to 309 conditions per place. [2023-01-27 20:01:06,979 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 51 selfloop transitions, 4 changer transitions 3/58 dead transitions. [2023-01-27 20:01:06,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 58 transitions, 324 flow [2023-01-27 20:01:06,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:01:06,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:01:06,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 733 transitions. [2023-01-27 20:01:06,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44695121951219513 [2023-01-27 20:01:06,982 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 733 transitions. [2023-01-27 20:01:06,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 733 transitions. [2023-01-27 20:01:06,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:06,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 733 transitions. [2023-01-27 20:01:06,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 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 20:01:06,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 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 20:01:06,987 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 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 20:01:06,988 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 146 flow. Second operand 4 states and 733 transitions. [2023-01-27 20:01:06,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 58 transitions, 324 flow [2023-01-27 20:01:06,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 20:01:06,994 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 180 flow [2023-01-27 20:01:06,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-01-27 20:01:06,996 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-01-27 20:01:06,996 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 180 flow [2023-01-27 20:01:06,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 20:01:06,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:06,997 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:07,004 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 20:01:07,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:07,202 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:07,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:07,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2094169333, now seen corresponding path program 4 times [2023-01-27 20:01:07,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:07,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510674627] [2023-01-27 20:01:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:07,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-27 20:01:07,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:07,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510674627] [2023-01-27 20:01:07,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510674627] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:01:07,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248862637] [2023-01-27 20:01:07,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:01:07,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:07,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:01:07,373 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 20:01:07,375 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 20:01:07,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:01:07,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:01:07,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:01:07,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:01:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:01:07,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:01:07,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248862637] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:07,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:01:07,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-01-27 20:01:07,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470086850] [2023-01-27 20:01:07,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:07,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:01:07,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:07,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:01:07,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:01:07,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 410 [2023-01-27 20:01:07,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 20:01:07,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:07,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 410 [2023-01-27 20:01:07,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:07,597 INFO L130 PetriNetUnfolder]: 229/396 cut-off events. [2023-01-27 20:01:07,598 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2023-01-27 20:01:07,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 396 events. 229/396 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1357 event pairs, 64 based on Foata normal form. 4/335 useless extension candidates. Maximal degree in co-relation 951. Up to 189 conditions per place. [2023-01-27 20:01:07,601 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 54 selfloop transitions, 7 changer transitions 3/64 dead transitions. [2023-01-27 20:01:07,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 64 transitions, 377 flow [2023-01-27 20:01:07,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:01:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:01:07,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 737 transitions. [2023-01-27 20:01:07,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44939024390243903 [2023-01-27 20:01:07,604 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 737 transitions. [2023-01-27 20:01:07,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 737 transitions. [2023-01-27 20:01:07,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:07,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 737 transitions. [2023-01-27 20:01:07,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 0 states have call successors, (0), 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 20:01:07,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 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 20:01:07,610 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 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 20:01:07,610 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 180 flow. Second operand 4 states and 737 transitions. [2023-01-27 20:01:07,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 64 transitions, 377 flow [2023-01-27 20:01:07,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 373 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-27 20:01:07,614 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 205 flow [2023-01-27 20:01:07,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-01-27 20:01:07,616 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2023-01-27 20:01:07,616 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 205 flow [2023-01-27 20:01:07,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 20:01:07,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:07,617 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:07,624 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 20:01:07,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:07,822 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:07,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:07,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1210593385, now seen corresponding path program 1 times [2023-01-27 20:01:07,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:07,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705213559] [2023-01-27 20:01:07,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:07,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-27 20:01:07,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:07,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705213559] [2023-01-27 20:01:07,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705213559] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:01:07,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770168826] [2023-01-27 20:01:07,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:07,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:07,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:01:07,964 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 20:01:07,986 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 20:01:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:08,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 20:01:08,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:01:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-27 20:01:08,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:01:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-27 20:01:08,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770168826] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:01:08,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:01:08,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-01-27 20:01:08,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449993540] [2023-01-27 20:01:08,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:01:08,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 20:01:08,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:08,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 20:01:08,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-01-27 20:01:08,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 410 [2023-01-27 20:01:08,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 205 flow. Second operand has 17 states, 17 states have (on average 163.0) internal successors, (2771), 17 states have internal predecessors, (2771), 0 states have call successors, (0), 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 20:01:08,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:08,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 410 [2023-01-27 20:01:08,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:08,369 INFO L130 PetriNetUnfolder]: 198/356 cut-off events. [2023-01-27 20:01:08,370 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2023-01-27 20:01:08,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 356 events. 198/356 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1206 event pairs, 114 based on Foata normal form. 1/297 useless extension candidates. Maximal degree in co-relation 861. Up to 332 conditions per place. [2023-01-27 20:01:08,372 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 29 selfloop transitions, 12 changer transitions 0/42 dead transitions. [2023-01-27 20:01:08,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 299 flow [2023-01-27 20:01:08,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:01:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:01:08,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1163 transitions. [2023-01-27 20:01:08,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052264808362369 [2023-01-27 20:01:08,375 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1163 transitions. [2023-01-27 20:01:08,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1163 transitions. [2023-01-27 20:01:08,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:08,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1163 transitions. [2023-01-27 20:01:08,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 0 states have call successors, (0), 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 20:01:08,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 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 20:01:08,382 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 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 20:01:08,382 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 205 flow. Second operand 7 states and 1163 transitions. [2023-01-27 20:01:08,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 299 flow [2023-01-27 20:01:08,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 287 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-27 20:01:08,384 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 239 flow [2023-01-27 20:01:08,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=239, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-01-27 20:01:08,385 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2023-01-27 20:01:08,385 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 239 flow [2023-01-27 20:01:08,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 163.0) internal successors, (2771), 17 states have internal predecessors, (2771), 0 states have call successors, (0), 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 20:01:08,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:08,386 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:08,394 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 20:01:08,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:08,592 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:08,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:08,592 INFO L85 PathProgramCache]: Analyzing trace with hash 269385230, now seen corresponding path program 2 times [2023-01-27 20:01:08,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:08,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715085886] [2023-01-27 20:01:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:08,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:09,525 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:09,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:09,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715085886] [2023-01-27 20:01:09,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715085886] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:09,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:09,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 20:01:09,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133733788] [2023-01-27 20:01:09,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:09,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:01:09,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:09,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:01:09,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:01:09,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-27 20:01:09,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 239 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:09,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:09,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-27 20:01:09,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:10,024 INFO L130 PetriNetUnfolder]: 307/548 cut-off events. [2023-01-27 20:01:10,024 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2023-01-27 20:01:10,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 548 events. 307/548 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2154 event pairs, 41 based on Foata normal form. 13/468 useless extension candidates. Maximal degree in co-relation 1270. Up to 130 conditions per place. [2023-01-27 20:01:10,028 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 94 selfloop transitions, 28 changer transitions 10/132 dead transitions. [2023-01-27 20:01:10,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 132 transitions, 747 flow [2023-01-27 20:01:10,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 20:01:10,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 20:01:10,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1834 transitions. [2023-01-27 20:01:10,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34409005628517825 [2023-01-27 20:01:10,034 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1834 transitions. [2023-01-27 20:01:10,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1834 transitions. [2023-01-27 20:01:10,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:10,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1834 transitions. [2023-01-27 20:01:10,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 141.07692307692307) internal successors, (1834), 13 states have internal predecessors, (1834), 0 states have call successors, (0), 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 20:01:10,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 20:01:10,046 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 20:01:10,046 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 239 flow. Second operand 13 states and 1834 transitions. [2023-01-27 20:01:10,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 132 transitions, 747 flow [2023-01-27 20:01:10,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 132 transitions, 723 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-27 20:01:10,049 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 423 flow [2023-01-27 20:01:10,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=423, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2023-01-27 20:01:10,050 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2023-01-27 20:01:10,050 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 423 flow [2023-01-27 20:01:10,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:10,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:10,051 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:10,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 20:01:10,051 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:10,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:10,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1843151562, now seen corresponding path program 3 times [2023-01-27 20:01:10,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:10,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746913963] [2023-01-27 20:01:10,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:10,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-27 20:01:11,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:11,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746913963] [2023-01-27 20:01:11,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746913963] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:01:11,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572159228] [2023-01-27 20:01:11,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:01:11,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:11,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:01:11,246 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 20:01:11,249 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 20:01:11,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 20:01:11,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:01:11,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-27 20:01:11,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:01:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:11,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:01:11,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572159228] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:11,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:01:11,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 24 [2023-01-27 20:01:11,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830479394] [2023-01-27 20:01:11,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:11,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:01:11,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:11,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:01:11,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2023-01-27 20:01:11,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-27 20:01:11,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 423 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:11,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:11,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-27 20:01:11,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:12,202 INFO L130 PetriNetUnfolder]: 323/572 cut-off events. [2023-01-27 20:01:12,202 INFO L131 PetriNetUnfolder]: For 660/660 co-relation queries the response was YES. [2023-01-27 20:01:12,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 572 events. 323/572 cut-off events. For 660/660 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2234 event pairs, 51 based on Foata normal form. 7/579 useless extension candidates. Maximal degree in co-relation 1867. Up to 179 conditions per place. [2023-01-27 20:01:12,207 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 78 selfloop transitions, 24 changer transitions 9/111 dead transitions. [2023-01-27 20:01:12,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 111 transitions, 811 flow [2023-01-27 20:01:12,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:01:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:01:12,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1271 transitions. [2023-01-27 20:01:12,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2023-01-27 20:01:12,211 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1271 transitions. [2023-01-27 20:01:12,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1271 transitions. [2023-01-27 20:01:12,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:12,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1271 transitions. [2023-01-27 20:01:12,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.22222222222223) internal successors, (1271), 9 states have internal predecessors, (1271), 0 states have call successors, (0), 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 20:01:12,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:12,220 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:12,220 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 423 flow. Second operand 9 states and 1271 transitions. [2023-01-27 20:01:12,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 111 transitions, 811 flow [2023-01-27 20:01:12,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 111 transitions, 800 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-27 20:01:12,227 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 525 flow [2023-01-27 20:01:12,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=525, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2023-01-27 20:01:12,229 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2023-01-27 20:01:12,229 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 525 flow [2023-01-27 20:01:12,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:12,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:12,230 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:12,236 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 20:01:12,436 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 20:01:12,437 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:12,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:12,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1894417440, now seen corresponding path program 4 times [2023-01-27 20:01:12,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:12,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346875718] [2023-01-27 20:01:12,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:12,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-27 20:01:13,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:13,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346875718] [2023-01-27 20:01:13,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346875718] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:01:13,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628320841] [2023-01-27 20:01:13,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:01:13,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:13,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:01:13,785 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 20:01:13,808 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 20:01:13,886 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:01:13,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:01:13,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-27 20:01:13,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:01:14,062 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:14,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:01:14,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628320841] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:14,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:01:14,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 22 [2023-01-27 20:01:14,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802069748] [2023-01-27 20:01:14,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:14,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:01:14,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:14,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:01:14,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-01-27 20:01:14,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 410 [2023-01-27 20:01:14,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 525 flow. Second operand has 8 states, 8 states have (on average 140.375) internal successors, (1123), 8 states have internal predecessors, (1123), 0 states have call successors, (0), 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 20:01:14,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:14,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 410 [2023-01-27 20:01:14,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:14,360 INFO L130 PetriNetUnfolder]: 324/583 cut-off events. [2023-01-27 20:01:14,360 INFO L131 PetriNetUnfolder]: For 1287/1287 co-relation queries the response was YES. [2023-01-27 20:01:14,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 583 events. 324/583 cut-off events. For 1287/1287 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2371 event pairs, 79 based on Foata normal form. 7/590 useless extension candidates. Maximal degree in co-relation 2254. Up to 204 conditions per place. [2023-01-27 20:01:14,365 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 83 selfloop transitions, 23 changer transitions 6/112 dead transitions. [2023-01-27 20:01:14,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 112 transitions, 908 flow [2023-01-27 20:01:14,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:01:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:01:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1183 transitions. [2023-01-27 20:01:14,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36067073170731706 [2023-01-27 20:01:14,369 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1183 transitions. [2023-01-27 20:01:14,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1183 transitions. [2023-01-27 20:01:14,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:14,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1183 transitions. [2023-01-27 20:01:14,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 147.875) internal successors, (1183), 8 states have internal predecessors, (1183), 0 states have call successors, (0), 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 20:01:14,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 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 20:01:14,376 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 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 20:01:14,376 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 525 flow. Second operand 8 states and 1183 transitions. [2023-01-27 20:01:14,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 112 transitions, 908 flow [2023-01-27 20:01:14,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 864 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-01-27 20:01:14,385 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 577 flow [2023-01-27 20:01:14,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=577, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-01-27 20:01:14,386 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 51 predicate places. [2023-01-27 20:01:14,386 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 577 flow [2023-01-27 20:01:14,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.375) internal successors, (1123), 8 states have internal predecessors, (1123), 0 states have call successors, (0), 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 20:01:14,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:14,387 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:14,407 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 20:01:14,594 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 20:01:14,594 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:14,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:14,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1075580716, now seen corresponding path program 5 times [2023-01-27 20:01:14,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:14,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167447186] [2023-01-27 20:01:14,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:14,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:01:16,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:16,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167447186] [2023-01-27 20:01:16,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167447186] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:01:16,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639298837] [2023-01-27 20:01:16,052 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:01:16,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:16,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:01:16,053 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 20:01:16,055 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 20:01:16,206 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-27 20:01:16,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:01:16,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-27 20:01:16,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:01:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:16,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:01:16,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639298837] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:16,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:01:16,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 29 [2023-01-27 20:01:16,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704289153] [2023-01-27 20:01:16,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:16,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:01:16,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:16,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:01:16,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2023-01-27 20:01:16,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-27 20:01:16,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 577 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:16,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:16,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-27 20:01:16,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:16,953 INFO L130 PetriNetUnfolder]: 320/569 cut-off events. [2023-01-27 20:01:16,953 INFO L131 PetriNetUnfolder]: For 1731/1731 co-relation queries the response was YES. [2023-01-27 20:01:16,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2346 conditions, 569 events. 320/569 cut-off events. For 1731/1731 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2212 event pairs, 55 based on Foata normal form. 1/570 useless extension candidates. Maximal degree in co-relation 2303. Up to 179 conditions per place. [2023-01-27 20:01:16,958 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 78 selfloop transitions, 24 changer transitions 10/112 dead transitions. [2023-01-27 20:01:16,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 112 transitions, 955 flow [2023-01-27 20:01:16,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:01:16,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:01:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1268 transitions. [2023-01-27 20:01:16,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34363143631436316 [2023-01-27 20:01:16,962 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1268 transitions. [2023-01-27 20:01:16,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1268 transitions. [2023-01-27 20:01:16,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:16,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1268 transitions. [2023-01-27 20:01:16,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 140.88888888888889) internal successors, (1268), 9 states have internal predecessors, (1268), 0 states have call successors, (0), 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 20:01:16,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:16,983 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:16,983 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 577 flow. Second operand 9 states and 1268 transitions. [2023-01-27 20:01:16,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 112 transitions, 955 flow [2023-01-27 20:01:16,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 112 transitions, 901 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-01-27 20:01:16,994 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 563 flow [2023-01-27 20:01:16,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=563, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2023-01-27 20:01:16,995 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 54 predicate places. [2023-01-27 20:01:16,995 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 563 flow [2023-01-27 20:01:16,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:16,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:16,996 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:17,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 20:01:17,202 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 20:01:17,202 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:17,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:17,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1130882794, now seen corresponding path program 6 times [2023-01-27 20:01:17,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:17,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873989324] [2023-01-27 20:01:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:17,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:17,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:17,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873989324] [2023-01-27 20:01:17,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873989324] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:17,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:17,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 20:01:17,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105827692] [2023-01-27 20:01:17,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:17,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:01:17,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:17,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:01:17,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:01:17,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-27 20:01:17,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 563 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:17,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:17,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-27 20:01:17,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:18,160 INFO L130 PetriNetUnfolder]: 322/583 cut-off events. [2023-01-27 20:01:18,161 INFO L131 PetriNetUnfolder]: For 1577/1577 co-relation queries the response was YES. [2023-01-27 20:01:18,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 583 events. 322/583 cut-off events. For 1577/1577 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2368 event pairs, 37 based on Foata normal form. 1/584 useless extension candidates. Maximal degree in co-relation 2324. Up to 149 conditions per place. [2023-01-27 20:01:18,165 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 97 selfloop transitions, 31 changer transitions 9/137 dead transitions. [2023-01-27 20:01:18,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 137 transitions, 1103 flow [2023-01-27 20:01:18,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 20:01:18,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 20:01:18,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1962 transitions. [2023-01-27 20:01:18,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34181184668989545 [2023-01-27 20:01:18,170 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1962 transitions. [2023-01-27 20:01:18,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1962 transitions. [2023-01-27 20:01:18,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:18,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1962 transitions. [2023-01-27 20:01:18,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.14285714285714) internal successors, (1962), 14 states have internal predecessors, (1962), 0 states have call successors, (0), 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 20:01:18,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 20:01:18,180 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 20:01:18,180 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 563 flow. Second operand 14 states and 1962 transitions. [2023-01-27 20:01:18,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 137 transitions, 1103 flow [2023-01-27 20:01:18,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 137 transitions, 1058 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-01-27 20:01:18,188 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 586 flow [2023-01-27 20:01:18,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=586, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2023-01-27 20:01:18,189 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 59 predicate places. [2023-01-27 20:01:18,190 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 586 flow [2023-01-27 20:01:18,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:18,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:18,190 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:18,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 20:01:18,191 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:18,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:18,191 INFO L85 PathProgramCache]: Analyzing trace with hash 583298390, now seen corresponding path program 7 times [2023-01-27 20:01:18,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:18,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868350064] [2023-01-27 20:01:18,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:18,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:18,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:18,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868350064] [2023-01-27 20:01:18,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868350064] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:18,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:18,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 20:01:18,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936823927] [2023-01-27 20:01:18,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:18,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:01:18,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:18,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:01:18,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:01:18,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-27 20:01:18,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 586 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:18,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:18,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-27 20:01:18,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:19,140 INFO L130 PetriNetUnfolder]: 319/570 cut-off events. [2023-01-27 20:01:19,140 INFO L131 PetriNetUnfolder]: For 1650/1650 co-relation queries the response was YES. [2023-01-27 20:01:19,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 570 events. 319/570 cut-off events. For 1650/1650 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2258 event pairs, 37 based on Foata normal form. 1/571 useless extension candidates. Maximal degree in co-relation 2325. Up to 149 conditions per place. [2023-01-27 20:01:19,146 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 91 selfloop transitions, 30 changer transitions 7/128 dead transitions. [2023-01-27 20:01:19,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 128 transitions, 1072 flow [2023-01-27 20:01:19,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 20:01:19,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 20:01:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1689 transitions. [2023-01-27 20:01:19,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3432926829268293 [2023-01-27 20:01:19,151 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1689 transitions. [2023-01-27 20:01:19,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1689 transitions. [2023-01-27 20:01:19,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:19,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1689 transitions. [2023-01-27 20:01:19,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 140.75) internal successors, (1689), 12 states have internal predecessors, (1689), 0 states have call successors, (0), 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 20:01:19,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:01:19,162 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:01:19,162 INFO L175 Difference]: Start difference. First operand has 85 places, 72 transitions, 586 flow. Second operand 12 states and 1689 transitions. [2023-01-27 20:01:19,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 128 transitions, 1072 flow [2023-01-27 20:01:19,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 128 transitions, 976 flow, removed 10 selfloop flow, removed 12 redundant places. [2023-01-27 20:01:19,171 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 559 flow [2023-01-27 20:01:19,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=559, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2023-01-27 20:01:19,172 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-01-27 20:01:19,173 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 559 flow [2023-01-27 20:01:19,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:19,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:19,173 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:19,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 20:01:19,174 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:19,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:19,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1827664836, now seen corresponding path program 8 times [2023-01-27 20:01:19,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:19,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372424769] [2023-01-27 20:01:19,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:19,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-27 20:01:20,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:20,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372424769] [2023-01-27 20:01:20,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372424769] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:01:20,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197289757] [2023-01-27 20:01:20,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:01:20,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:20,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:01:20,220 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 20:01:20,222 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 20:01:20,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-27 20:01:20,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:01:20,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-27 20:01:20,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:01:20,724 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:20,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:01:20,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197289757] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:20,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:01:20,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 24 [2023-01-27 20:01:20,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448617427] [2023-01-27 20:01:20,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:20,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:01:20,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:20,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:01:20,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2023-01-27 20:01:20,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-27 20:01:20,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 559 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:20,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:20,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-27 20:01:20,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:21,103 INFO L130 PetriNetUnfolder]: 375/650 cut-off events. [2023-01-27 20:01:21,103 INFO L131 PetriNetUnfolder]: For 1559/1559 co-relation queries the response was YES. [2023-01-27 20:01:21,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2588 conditions, 650 events. 375/650 cut-off events. For 1559/1559 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2612 event pairs, 57 based on Foata normal form. 7/657 useless extension candidates. Maximal degree in co-relation 2546. Up to 215 conditions per place. [2023-01-27 20:01:21,109 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 87 selfloop transitions, 27 changer transitions 9/123 dead transitions. [2023-01-27 20:01:21,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 123 transitions, 1058 flow [2023-01-27 20:01:21,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:01:21,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:01:21,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1273 transitions. [2023-01-27 20:01:21,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34498644986449867 [2023-01-27 20:01:21,114 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1273 transitions. [2023-01-27 20:01:21,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1273 transitions. [2023-01-27 20:01:21,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:21,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1273 transitions. [2023-01-27 20:01:21,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.44444444444446) internal successors, (1273), 9 states have internal predecessors, (1273), 0 states have call successors, (0), 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 20:01:21,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:21,123 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:21,123 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 559 flow. Second operand 9 states and 1273 transitions. [2023-01-27 20:01:21,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 123 transitions, 1058 flow [2023-01-27 20:01:21,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 123 transitions, 976 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-01-27 20:01:21,132 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 689 flow [2023-01-27 20:01:21,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=689, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2023-01-27 20:01:21,133 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-01-27 20:01:21,133 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 689 flow [2023-01-27 20:01:21,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:21,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:21,133 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:21,143 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 20:01:21,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-27 20:01:21,340 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:21,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:21,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1146369520, now seen corresponding path program 9 times [2023-01-27 20:01:21,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:21,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110988046] [2023-01-27 20:01:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:21,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:21,853 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:21,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:21,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110988046] [2023-01-27 20:01:21,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110988046] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:21,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:21,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 20:01:21,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021160561] [2023-01-27 20:01:21,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:21,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:01:21,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:21,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:01:21,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:01:21,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-27 20:01:21,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 689 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:21,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:21,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-27 20:01:21,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:22,293 INFO L130 PetriNetUnfolder]: 384/687 cut-off events. [2023-01-27 20:01:22,294 INFO L131 PetriNetUnfolder]: For 2804/2804 co-relation queries the response was YES. [2023-01-27 20:01:22,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3119 conditions, 687 events. 384/687 cut-off events. For 2804/2804 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2921 event pairs, 51 based on Foata normal form. 1/688 useless extension candidates. Maximal degree in co-relation 3067. Up to 177 conditions per place. [2023-01-27 20:01:22,300 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 114 selfloop transitions, 34 changer transitions 9/157 dead transitions. [2023-01-27 20:01:22,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 157 transitions, 1342 flow [2023-01-27 20:01:22,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 20:01:22,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 20:01:22,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1971 transitions. [2023-01-27 20:01:22,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34337979094076654 [2023-01-27 20:01:22,304 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1971 transitions. [2023-01-27 20:01:22,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1971 transitions. [2023-01-27 20:01:22,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:22,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1971 transitions. [2023-01-27 20:01:22,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.78571428571428) internal successors, (1971), 14 states have internal predecessors, (1971), 0 states have call successors, (0), 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 20:01:22,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 20:01:22,314 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 20:01:22,314 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 689 flow. Second operand 14 states and 1971 transitions. [2023-01-27 20:01:22,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 157 transitions, 1342 flow [2023-01-27 20:01:22,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 157 transitions, 1285 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-01-27 20:01:22,324 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 774 flow [2023-01-27 20:01:22,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=774, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2023-01-27 20:01:22,325 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 67 predicate places. [2023-01-27 20:01:22,325 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 774 flow [2023-01-27 20:01:22,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:22,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:22,326 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:22,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 20:01:22,326 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:22,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:22,326 INFO L85 PathProgramCache]: Analyzing trace with hash 567811664, now seen corresponding path program 10 times [2023-01-27 20:01:22,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:22,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128643728] [2023-01-27 20:01:22,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:22,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:22,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:22,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128643728] [2023-01-27 20:01:22,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128643728] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:22,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:22,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 20:01:22,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034881270] [2023-01-27 20:01:22,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:22,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:01:22,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:22,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:01:22,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:01:22,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-27 20:01:22,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 774 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:22,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:22,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-27 20:01:22,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:23,249 INFO L130 PetriNetUnfolder]: 386/693 cut-off events. [2023-01-27 20:01:23,249 INFO L131 PetriNetUnfolder]: For 2811/2811 co-relation queries the response was YES. [2023-01-27 20:01:23,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3111 conditions, 693 events. 386/693 cut-off events. For 2811/2811 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2993 event pairs, 57 based on Foata normal form. 1/694 useless extension candidates. Maximal degree in co-relation 3057. Up to 245 conditions per place. [2023-01-27 20:01:23,255 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 93 selfloop transitions, 28 changer transitions 7/128 dead transitions. [2023-01-27 20:01:23,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 128 transitions, 1190 flow [2023-01-27 20:01:23,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:01:23,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:01:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1270 transitions. [2023-01-27 20:01:23,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34417344173441733 [2023-01-27 20:01:23,258 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1270 transitions. [2023-01-27 20:01:23,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1270 transitions. [2023-01-27 20:01:23,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:23,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1270 transitions. [2023-01-27 20:01:23,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.11111111111111) internal successors, (1270), 9 states have internal predecessors, (1270), 0 states have call successors, (0), 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 20:01:23,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:23,264 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:23,264 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 774 flow. Second operand 9 states and 1270 transitions. [2023-01-27 20:01:23,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 128 transitions, 1190 flow [2023-01-27 20:01:23,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 128 transitions, 1145 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-01-27 20:01:23,275 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 811 flow [2023-01-27 20:01:23,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=811, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2023-01-27 20:01:23,275 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 67 predicate places. [2023-01-27 20:01:23,276 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 811 flow [2023-01-27 20:01:23,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:23,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:23,276 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:23,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 20:01:23,277 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:23,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:23,277 INFO L85 PathProgramCache]: Analyzing trace with hash -132681324, now seen corresponding path program 11 times [2023-01-27 20:01:23,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:23,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436694513] [2023-01-27 20:01:23,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:23,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:23,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:23,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436694513] [2023-01-27 20:01:23,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436694513] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:23,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:23,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 20:01:23,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719730971] [2023-01-27 20:01:23,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:23,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:01:23,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:23,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:01:23,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:01:23,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-27 20:01:23,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 811 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:23,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:23,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-27 20:01:23,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:24,117 INFO L130 PetriNetUnfolder]: 384/683 cut-off events. [2023-01-27 20:01:24,117 INFO L131 PetriNetUnfolder]: For 2641/2641 co-relation queries the response was YES. [2023-01-27 20:01:24,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3050 conditions, 683 events. 384/683 cut-off events. For 2641/2641 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2903 event pairs, 55 based on Foata normal form. 1/684 useless extension candidates. Maximal degree in co-relation 2999. Up to 177 conditions per place. [2023-01-27 20:01:24,124 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 110 selfloop transitions, 32 changer transitions 7/149 dead transitions. [2023-01-27 20:01:24,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 149 transitions, 1351 flow [2023-01-27 20:01:24,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 20:01:24,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 20:01:24,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1695 transitions. [2023-01-27 20:01:24,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3445121951219512 [2023-01-27 20:01:24,127 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1695 transitions. [2023-01-27 20:01:24,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1695 transitions. [2023-01-27 20:01:24,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:24,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1695 transitions. [2023-01-27 20:01:24,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.25) internal successors, (1695), 12 states have internal predecessors, (1695), 0 states have call successors, (0), 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 20:01:24,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:01:24,141 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:01:24,141 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 811 flow. Second operand 12 states and 1695 transitions. [2023-01-27 20:01:24,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 149 transitions, 1351 flow [2023-01-27 20:01:24,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 149 transitions, 1287 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-01-27 20:01:24,154 INFO L231 Difference]: Finished difference. Result has 97 places, 87 transitions, 810 flow [2023-01-27 20:01:24,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=810, PETRI_PLACES=97, PETRI_TRANSITIONS=87} [2023-01-27 20:01:24,155 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 71 predicate places. [2023-01-27 20:01:24,155 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 87 transitions, 810 flow [2023-01-27 20:01:24,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:24,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:24,156 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:24,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 20:01:24,156 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:24,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:24,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1819505128, now seen corresponding path program 12 times [2023-01-27 20:01:24,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:24,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040000159] [2023-01-27 20:01:24,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:24,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:01:26,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:26,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040000159] [2023-01-27 20:01:26,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040000159] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:01:26,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271734691] [2023-01-27 20:01:26,151 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:01:26,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:26,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:01:26,153 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 20:01:26,165 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 20:01:26,300 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-27 20:01:26,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:01:26,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-27 20:01:26,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:01:26,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:01:26,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:01:26,718 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 20:01:26,718 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 18 treesize of output 23 [2023-01-27 20:01:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:26,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:01:26,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271734691] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:26,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:01:26,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 28 [2023-01-27 20:01:26,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482546079] [2023-01-27 20:01:26,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:26,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:01:26,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:26,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:01:26,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2023-01-27 20:01:26,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 410 [2023-01-27 20:01:26,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 87 transitions, 810 flow. Second operand has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 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 20:01:26,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:26,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 410 [2023-01-27 20:01:26,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:27,432 INFO L130 PetriNetUnfolder]: 418/749 cut-off events. [2023-01-27 20:01:27,433 INFO L131 PetriNetUnfolder]: For 3224/3224 co-relation queries the response was YES. [2023-01-27 20:01:27,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3373 conditions, 749 events. 418/749 cut-off events. For 3224/3224 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3252 event pairs, 59 based on Foata normal form. 18/767 useless extension candidates. Maximal degree in co-relation 3324. Up to 260 conditions per place. [2023-01-27 20:01:27,439 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 103 selfloop transitions, 36 changer transitions 6/145 dead transitions. [2023-01-27 20:01:27,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 145 transitions, 1456 flow [2023-01-27 20:01:27,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:01:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:01:27,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1203 transitions. [2023-01-27 20:01:27,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3260162601626016 [2023-01-27 20:01:27,442 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1203 transitions. [2023-01-27 20:01:27,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1203 transitions. [2023-01-27 20:01:27,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:27,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1203 transitions. [2023-01-27 20:01:27,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.66666666666666) internal successors, (1203), 9 states have internal predecessors, (1203), 0 states have call successors, (0), 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 20:01:27,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:27,447 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:27,448 INFO L175 Difference]: Start difference. First operand has 97 places, 87 transitions, 810 flow. Second operand 9 states and 1203 transitions. [2023-01-27 20:01:27,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 145 transitions, 1456 flow [2023-01-27 20:01:27,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 145 transitions, 1340 flow, removed 7 selfloop flow, removed 11 redundant places. [2023-01-27 20:01:27,460 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 958 flow [2023-01-27 20:01:27,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=958, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2023-01-27 20:01:27,461 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 70 predicate places. [2023-01-27 20:01:27,461 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 958 flow [2023-01-27 20:01:27,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 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 20:01:27,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:27,462 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:27,471 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 20:01:27,667 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,SelfDestructingSolverStorable16 [2023-01-27 20:01:27,668 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:27,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:27,668 INFO L85 PathProgramCache]: Analyzing trace with hash 966752974, now seen corresponding path program 13 times [2023-01-27 20:01:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:27,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192211473] [2023-01-27 20:01:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:27,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-27 20:01:28,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:28,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192211473] [2023-01-27 20:01:28,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192211473] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:01:28,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930828328] [2023-01-27 20:01:28,717 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 20:01:28,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:28,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:01:28,718 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 20:01:28,742 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 20:01:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:28,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 40 conjunts are in the unsatisfiable core [2023-01-27 20:01:28,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:01:29,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:01:29,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:01:29,247 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 20:01:29,247 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 20:01:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:29,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:01:29,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930828328] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:29,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:01:29,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 25 [2023-01-27 20:01:29,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864405374] [2023-01-27 20:01:29,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:29,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:01:29,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:29,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:01:29,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2023-01-27 20:01:29,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 410 [2023-01-27 20:01:29,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 958 flow. Second operand has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 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 20:01:29,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:29,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 410 [2023-01-27 20:01:29,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:30,090 INFO L130 PetriNetUnfolder]: 418/751 cut-off events. [2023-01-27 20:01:30,091 INFO L131 PetriNetUnfolder]: For 3276/3276 co-relation queries the response was YES. [2023-01-27 20:01:30,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 751 events. 418/751 cut-off events. For 3276/3276 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3262 event pairs, 58 based on Foata normal form. 1/752 useless extension candidates. Maximal degree in co-relation 3464. Up to 269 conditions per place. [2023-01-27 20:01:30,096 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 93 selfloop transitions, 37 changer transitions 11/141 dead transitions. [2023-01-27 20:01:30,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 141 transitions, 1448 flow [2023-01-27 20:01:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:01:30,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:01:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1198 transitions. [2023-01-27 20:01:30,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32466124661246615 [2023-01-27 20:01:30,098 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1198 transitions. [2023-01-27 20:01:30,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1198 transitions. [2023-01-27 20:01:30,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:30,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1198 transitions. [2023-01-27 20:01:30,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.11111111111111) internal successors, (1198), 9 states have internal predecessors, (1198), 0 states have call successors, (0), 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 20:01:30,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:30,104 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:30,104 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 958 flow. Second operand 9 states and 1198 transitions. [2023-01-27 20:01:30,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 141 transitions, 1448 flow [2023-01-27 20:01:30,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 141 transitions, 1404 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-01-27 20:01:30,120 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 995 flow [2023-01-27 20:01:30,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=995, PETRI_PLACES=101, PETRI_TRANSITIONS=98} [2023-01-27 20:01:30,120 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 75 predicate places. [2023-01-27 20:01:30,120 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 995 flow [2023-01-27 20:01:30,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 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 20:01:30,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:30,121 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:30,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-27 20:01:30,331 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,SelfDestructingSolverStorable17 [2023-01-27 20:01:30,331 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:30,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:30,331 INFO L85 PathProgramCache]: Analyzing trace with hash -852520374, now seen corresponding path program 14 times [2023-01-27 20:01:30,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:30,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299411139] [2023-01-27 20:01:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:30,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:30,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:30,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299411139] [2023-01-27 20:01:30,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299411139] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:30,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:30,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 20:01:30,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321970856] [2023-01-27 20:01:30,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:30,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:01:30,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:30,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:01:30,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:01:30,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-27 20:01:30,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 995 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:30,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:30,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-27 20:01:30,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:31,344 INFO L130 PetriNetUnfolder]: 521/932 cut-off events. [2023-01-27 20:01:31,345 INFO L131 PetriNetUnfolder]: For 4480/4480 co-relation queries the response was YES. [2023-01-27 20:01:31,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4357 conditions, 932 events. 521/932 cut-off events. For 4480/4480 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4244 event pairs, 79 based on Foata normal form. 7/939 useless extension candidates. Maximal degree in co-relation 4292. Up to 304 conditions per place. [2023-01-27 20:01:31,353 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 130 selfloop transitions, 52 changer transitions 6/188 dead transitions. [2023-01-27 20:01:31,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 188 transitions, 1925 flow [2023-01-27 20:01:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 20:01:31,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 20:01:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1966 transitions. [2023-01-27 20:01:31,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3425087108013937 [2023-01-27 20:01:31,356 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1966 transitions. [2023-01-27 20:01:31,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1966 transitions. [2023-01-27 20:01:31,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:31,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1966 transitions. [2023-01-27 20:01:31,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.42857142857142) internal successors, (1966), 14 states have internal predecessors, (1966), 0 states have call successors, (0), 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 20:01:31,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 20:01:31,364 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 20:01:31,365 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 995 flow. Second operand 14 states and 1966 transitions. [2023-01-27 20:01:31,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 188 transitions, 1925 flow [2023-01-27 20:01:31,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 188 transitions, 1834 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-01-27 20:01:31,381 INFO L231 Difference]: Finished difference. Result has 116 places, 122 transitions, 1387 flow [2023-01-27 20:01:31,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1387, PETRI_PLACES=116, PETRI_TRANSITIONS=122} [2023-01-27 20:01:31,382 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 90 predicate places. [2023-01-27 20:01:31,382 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 122 transitions, 1387 flow [2023-01-27 20:01:31,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:31,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:31,383 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:31,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-27 20:01:31,383 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:31,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:31,383 INFO L85 PathProgramCache]: Analyzing trace with hash 683574298, now seen corresponding path program 15 times [2023-01-27 20:01:31,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:31,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149618926] [2023-01-27 20:01:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:31,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:32,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:32,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149618926] [2023-01-27 20:01:32,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149618926] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:32,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:32,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 20:01:32,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430291623] [2023-01-27 20:01:32,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:32,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:01:32,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:32,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:01:32,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:01:32,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 410 [2023-01-27 20:01:32,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 122 transitions, 1387 flow. Second operand has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 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 20:01:32,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:32,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 410 [2023-01-27 20:01:32,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:32,641 INFO L130 PetriNetUnfolder]: 517/934 cut-off events. [2023-01-27 20:01:32,641 INFO L131 PetriNetUnfolder]: For 5381/5381 co-relation queries the response was YES. [2023-01-27 20:01:32,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4684 conditions, 934 events. 517/934 cut-off events. For 5381/5381 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4315 event pairs, 82 based on Foata normal form. 5/939 useless extension candidates. Maximal degree in co-relation 4608. Up to 173 conditions per place. [2023-01-27 20:01:32,658 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 103 selfloop transitions, 63 changer transitions 14/180 dead transitions. [2023-01-27 20:01:32,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 180 transitions, 2040 flow [2023-01-27 20:01:32,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 20:01:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 20:01:32,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1719 transitions. [2023-01-27 20:01:32,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225140712945591 [2023-01-27 20:01:32,661 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1719 transitions. [2023-01-27 20:01:32,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1719 transitions. [2023-01-27 20:01:32,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:32,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1719 transitions. [2023-01-27 20:01:32,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 132.23076923076923) internal successors, (1719), 13 states have internal predecessors, (1719), 0 states have call successors, (0), 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 20:01:32,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 20:01:32,669 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 20:01:32,669 INFO L175 Difference]: Start difference. First operand has 116 places, 122 transitions, 1387 flow. Second operand 13 states and 1719 transitions. [2023-01-27 20:01:32,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 180 transitions, 2040 flow [2023-01-27 20:01:32,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 180 transitions, 1956 flow, removed 41 selfloop flow, removed 4 redundant places. [2023-01-27 20:01:32,697 INFO L231 Difference]: Finished difference. Result has 125 places, 121 transitions, 1455 flow [2023-01-27 20:01:32,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1455, PETRI_PLACES=125, PETRI_TRANSITIONS=121} [2023-01-27 20:01:32,698 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 99 predicate places. [2023-01-27 20:01:32,698 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 121 transitions, 1455 flow [2023-01-27 20:01:32,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 125.58333333333333) internal successors, (1507), 12 states have internal predecessors, (1507), 0 states have call successors, (0), 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 20:01:32,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:32,698 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:32,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-27 20:01:32,699 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:32,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:32,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1934235582, now seen corresponding path program 16 times [2023-01-27 20:01:32,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:32,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351374940] [2023-01-27 20:01:32,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:32,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:33,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:33,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351374940] [2023-01-27 20:01:33,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351374940] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:33,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:33,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 20:01:33,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012883630] [2023-01-27 20:01:33,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:33,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:01:33,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:33,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:01:33,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:01:33,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-27 20:01:33,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 121 transitions, 1455 flow. Second operand has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 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 20:01:33,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:33,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-27 20:01:33,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:33,710 INFO L130 PetriNetUnfolder]: 504/923 cut-off events. [2023-01-27 20:01:33,710 INFO L131 PetriNetUnfolder]: For 5917/5917 co-relation queries the response was YES. [2023-01-27 20:01:33,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4634 conditions, 923 events. 504/923 cut-off events. For 5917/5917 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4309 event pairs, 71 based on Foata normal form. 7/930 useless extension candidates. Maximal degree in co-relation 4556. Up to 239 conditions per place. [2023-01-27 20:01:33,723 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 104 selfloop transitions, 72 changer transitions 6/182 dead transitions. [2023-01-27 20:01:33,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 182 transitions, 2087 flow [2023-01-27 20:01:33,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-27 20:01:33,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-27 20:01:33,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2034 transitions. [2023-01-27 20:01:33,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307317073170732 [2023-01-27 20:01:33,726 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2034 transitions. [2023-01-27 20:01:33,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2034 transitions. [2023-01-27 20:01:33,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:33,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2034 transitions. [2023-01-27 20:01:33,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 135.6) internal successors, (2034), 15 states have internal predecessors, (2034), 0 states have call successors, (0), 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 20:01:33,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 410.0) internal successors, (6560), 16 states have internal predecessors, (6560), 0 states have call successors, (0), 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 20:01:33,736 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 410.0) internal successors, (6560), 16 states have internal predecessors, (6560), 0 states have call successors, (0), 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 20:01:33,736 INFO L175 Difference]: Start difference. First operand has 125 places, 121 transitions, 1455 flow. Second operand 15 states and 2034 transitions. [2023-01-27 20:01:33,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 182 transitions, 2087 flow [2023-01-27 20:01:33,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 182 transitions, 1968 flow, removed 21 selfloop flow, removed 9 redundant places. [2023-01-27 20:01:33,760 INFO L231 Difference]: Finished difference. Result has 131 places, 126 transitions, 1593 flow [2023-01-27 20:01:33,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1593, PETRI_PLACES=131, PETRI_TRANSITIONS=126} [2023-01-27 20:01:33,761 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 105 predicate places. [2023-01-27 20:01:33,761 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 126 transitions, 1593 flow [2023-01-27 20:01:33,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 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 20:01:33,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:33,762 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:33,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-27 20:01:33,763 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:33,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:33,763 INFO L85 PathProgramCache]: Analyzing trace with hash 472448766, now seen corresponding path program 17 times [2023-01-27 20:01:33,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:33,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681871437] [2023-01-27 20:01:33,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:33,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:34,204 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:34,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:34,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681871437] [2023-01-27 20:01:34,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681871437] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:34,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:34,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 20:01:34,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425831843] [2023-01-27 20:01:34,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:34,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:01:34,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:34,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:01:34,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:01:34,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-27 20:01:34,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 126 transitions, 1593 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:34,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:34,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-27 20:01:34,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:34,702 INFO L130 PetriNetUnfolder]: 502/921 cut-off events. [2023-01-27 20:01:34,702 INFO L131 PetriNetUnfolder]: For 5855/5855 co-relation queries the response was YES. [2023-01-27 20:01:34,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4838 conditions, 921 events. 502/921 cut-off events. For 5855/5855 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4271 event pairs, 79 based on Foata normal form. 1/922 useless extension candidates. Maximal degree in co-relation 4757. Up to 301 conditions per place. [2023-01-27 20:01:34,709 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 131 selfloop transitions, 49 changer transitions 9/189 dead transitions. [2023-01-27 20:01:34,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 189 transitions, 2217 flow [2023-01-27 20:01:34,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 20:01:34,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 20:01:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1963 transitions. [2023-01-27 20:01:34,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34198606271777005 [2023-01-27 20:01:34,712 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1963 transitions. [2023-01-27 20:01:34,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1963 transitions. [2023-01-27 20:01:34,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:34,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1963 transitions. [2023-01-27 20:01:34,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.21428571428572) internal successors, (1963), 14 states have internal predecessors, (1963), 0 states have call successors, (0), 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 20:01:34,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 20:01:34,719 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 20:01:34,719 INFO L175 Difference]: Start difference. First operand has 131 places, 126 transitions, 1593 flow. Second operand 14 states and 1963 transitions. [2023-01-27 20:01:34,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 189 transitions, 2217 flow [2023-01-27 20:01:34,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 189 transitions, 2094 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-01-27 20:01:34,744 INFO L231 Difference]: Finished difference. Result has 136 places, 124 transitions, 1547 flow [2023-01-27 20:01:34,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1547, PETRI_PLACES=136, PETRI_TRANSITIONS=124} [2023-01-27 20:01:34,745 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 110 predicate places. [2023-01-27 20:01:34,745 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 124 transitions, 1547 flow [2023-01-27 20:01:34,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:34,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:34,746 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:34,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-27 20:01:34,746 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:34,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:34,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1596096490, now seen corresponding path program 18 times [2023-01-27 20:01:34,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:34,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552722744] [2023-01-27 20:01:34,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:34,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-27 20:01:35,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:35,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552722744] [2023-01-27 20:01:35,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552722744] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:01:35,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623369391] [2023-01-27 20:01:35,585 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:01:35,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:35,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:01:35,587 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 20:01:35,608 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 20:01:35,741 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-27 20:01:35,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:01:35,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-27 20:01:35,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:01:36,162 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-01-27 20:01:36,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 47 [2023-01-27 20:01:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:36,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:01:36,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623369391] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:36,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:01:36,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 24 [2023-01-27 20:01:36,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53600478] [2023-01-27 20:01:36,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:36,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:01:36,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:36,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:01:36,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2023-01-27 20:01:36,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-27 20:01:36,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 124 transitions, 1547 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:36,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:36,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-27 20:01:36,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:36,898 INFO L130 PetriNetUnfolder]: 507/940 cut-off events. [2023-01-27 20:01:36,898 INFO L131 PetriNetUnfolder]: For 5653/5653 co-relation queries the response was YES. [2023-01-27 20:01:36,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4918 conditions, 940 events. 507/940 cut-off events. For 5653/5653 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4477 event pairs, 87 based on Foata normal form. 1/941 useless extension candidates. Maximal degree in co-relation 4834. Up to 386 conditions per place. [2023-01-27 20:01:36,907 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 127 selfloop transitions, 45 changer transitions 7/179 dead transitions. [2023-01-27 20:01:36,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 179 transitions, 2181 flow [2023-01-27 20:01:36,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:01:36,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:01:36,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1405 transitions. [2023-01-27 20:01:36,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3426829268292683 [2023-01-27 20:01:36,909 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1405 transitions. [2023-01-27 20:01:36,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1405 transitions. [2023-01-27 20:01:36,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:36,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1405 transitions. [2023-01-27 20:01:36,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.5) internal successors, (1405), 10 states have internal predecessors, (1405), 0 states have call successors, (0), 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 20:01:36,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 20:01:36,915 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 20:01:36,915 INFO L175 Difference]: Start difference. First operand has 136 places, 124 transitions, 1547 flow. Second operand 10 states and 1405 transitions. [2023-01-27 20:01:36,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 179 transitions, 2181 flow [2023-01-27 20:01:36,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 179 transitions, 2067 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-01-27 20:01:36,942 INFO L231 Difference]: Finished difference. Result has 134 places, 129 transitions, 1613 flow [2023-01-27 20:01:36,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1613, PETRI_PLACES=134, PETRI_TRANSITIONS=129} [2023-01-27 20:01:36,943 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 108 predicate places. [2023-01-27 20:01:36,943 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 129 transitions, 1613 flow [2023-01-27 20:01:36,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:36,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:36,943 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:36,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-27 20:01:37,149 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,SelfDestructingSolverStorable22 [2023-01-27 20:01:37,150 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:37,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:37,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1486136962, now seen corresponding path program 19 times [2023-01-27 20:01:37,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:37,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961111423] [2023-01-27 20:01:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:37,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:38,022 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-27 20:01:38,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:38,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961111423] [2023-01-27 20:01:38,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961111423] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:01:38,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597837781] [2023-01-27 20:01:38,023 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 20:01:38,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:38,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:01:38,025 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 20:01:38,036 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 20:01:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:38,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-27 20:01:38,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:01:38,527 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-01-27 20:01:38,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 47 [2023-01-27 20:01:38,610 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:38,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:01:38,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597837781] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:38,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:01:38,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 24 [2023-01-27 20:01:38,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714317003] [2023-01-27 20:01:38,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:38,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:01:38,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:38,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:01:38,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2023-01-27 20:01:38,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-27 20:01:38,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 129 transitions, 1613 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:38,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:38,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-27 20:01:38,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:39,070 INFO L130 PetriNetUnfolder]: 510/949 cut-off events. [2023-01-27 20:01:39,070 INFO L131 PetriNetUnfolder]: For 5817/5817 co-relation queries the response was YES. [2023-01-27 20:01:39,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4960 conditions, 949 events. 510/949 cut-off events. For 5817/5817 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4558 event pairs, 87 based on Foata normal form. 1/950 useless extension candidates. Maximal degree in co-relation 4874. Up to 400 conditions per place. [2023-01-27 20:01:39,078 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 121 selfloop transitions, 45 changer transitions 7/173 dead transitions. [2023-01-27 20:01:39,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 173 transitions, 2141 flow [2023-01-27 20:01:39,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:01:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:01:39,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1274 transitions. [2023-01-27 20:01:39,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3452574525745257 [2023-01-27 20:01:39,080 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1274 transitions. [2023-01-27 20:01:39,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1274 transitions. [2023-01-27 20:01:39,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:39,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1274 transitions. [2023-01-27 20:01:39,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.55555555555554) internal successors, (1274), 9 states have internal predecessors, (1274), 0 states have call successors, (0), 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 20:01:39,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:39,085 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:39,085 INFO L175 Difference]: Start difference. First operand has 134 places, 129 transitions, 1613 flow. Second operand 9 states and 1274 transitions. [2023-01-27 20:01:39,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 173 transitions, 2141 flow [2023-01-27 20:01:39,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 173 transitions, 2116 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-27 20:01:39,116 INFO L231 Difference]: Finished difference. Result has 139 places, 130 transitions, 1707 flow [2023-01-27 20:01:39,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1707, PETRI_PLACES=139, PETRI_TRANSITIONS=130} [2023-01-27 20:01:39,117 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 113 predicate places. [2023-01-27 20:01:39,117 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 130 transitions, 1707 flow [2023-01-27 20:01:39,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:39,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:39,117 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:39,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-01-27 20:01:39,323 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,SelfDestructingSolverStorable23 [2023-01-27 20:01:39,323 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:39,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2108337346, now seen corresponding path program 20 times [2023-01-27 20:01:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:39,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740726333] [2023-01-27 20:01:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:39,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:39,746 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:39,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:39,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740726333] [2023-01-27 20:01:39,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740726333] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:39,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:39,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 20:01:39,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663972783] [2023-01-27 20:01:39,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:39,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:01:39,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:39,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:01:39,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:01:39,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-27 20:01:39,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 130 transitions, 1707 flow. Second operand has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:39,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:39,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-27 20:01:39,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:40,339 INFO L130 PetriNetUnfolder]: 537/980 cut-off events. [2023-01-27 20:01:40,339 INFO L131 PetriNetUnfolder]: For 7209/7209 co-relation queries the response was YES. [2023-01-27 20:01:40,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5344 conditions, 980 events. 537/980 cut-off events. For 7209/7209 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4620 event pairs, 79 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 5276. Up to 297 conditions per place. [2023-01-27 20:01:40,347 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 136 selfloop transitions, 61 changer transitions 7/204 dead transitions. [2023-01-27 20:01:40,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 204 transitions, 2493 flow [2023-01-27 20:01:40,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 20:01:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 20:01:40,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2236 transitions. [2023-01-27 20:01:40,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3408536585365854 [2023-01-27 20:01:40,351 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2236 transitions. [2023-01-27 20:01:40,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2236 transitions. [2023-01-27 20:01:40,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:40,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2236 transitions. [2023-01-27 20:01:40,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.75) internal successors, (2236), 16 states have internal predecessors, (2236), 0 states have call successors, (0), 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 20:01:40,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 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 20:01:40,360 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 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 20:01:40,360 INFO L175 Difference]: Start difference. First operand has 139 places, 130 transitions, 1707 flow. Second operand 16 states and 2236 transitions. [2023-01-27 20:01:40,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 204 transitions, 2493 flow [2023-01-27 20:01:40,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 204 transitions, 2388 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-01-27 20:01:40,395 INFO L231 Difference]: Finished difference. Result has 152 places, 138 transitions, 1893 flow [2023-01-27 20:01:40,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1893, PETRI_PLACES=152, PETRI_TRANSITIONS=138} [2023-01-27 20:01:40,395 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 126 predicate places. [2023-01-27 20:01:40,395 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 138 transitions, 1893 flow [2023-01-27 20:01:40,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.72727272727272) internal successors, (1471), 11 states have internal predecessors, (1471), 0 states have call successors, (0), 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 20:01:40,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:40,396 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:40,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-01-27 20:01:40,396 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:40,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:40,397 INFO L85 PathProgramCache]: Analyzing trace with hash 798304752, now seen corresponding path program 21 times [2023-01-27 20:01:40,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:40,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466295864] [2023-01-27 20:01:40,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:40,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:40,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466295864] [2023-01-27 20:01:40,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466295864] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:40,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:40,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 20:01:40,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881765806] [2023-01-27 20:01:40,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:40,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:01:40,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:40,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:01:40,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:01:40,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-27 20:01:40,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 138 transitions, 1893 flow. Second operand has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 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 20:01:40,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:40,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-27 20:01:40,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:41,411 INFO L130 PetriNetUnfolder]: 535/970 cut-off events. [2023-01-27 20:01:41,411 INFO L131 PetriNetUnfolder]: For 7617/7617 co-relation queries the response was YES. [2023-01-27 20:01:41,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5588 conditions, 970 events. 535/970 cut-off events. For 7617/7617 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4545 event pairs, 67 based on Foata normal form. 1/971 useless extension candidates. Maximal degree in co-relation 5521. Up to 255 conditions per place. [2023-01-27 20:01:41,418 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 103 selfloop transitions, 77 changer transitions 8/188 dead transitions. [2023-01-27 20:01:41,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 188 transitions, 2462 flow [2023-01-27 20:01:41,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-27 20:01:41,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-27 20:01:41,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2026 transitions. [2023-01-27 20:01:41,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32943089430894307 [2023-01-27 20:01:41,422 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2026 transitions. [2023-01-27 20:01:41,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2026 transitions. [2023-01-27 20:01:41,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:41,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2026 transitions. [2023-01-27 20:01:41,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 135.06666666666666) internal successors, (2026), 15 states have internal predecessors, (2026), 0 states have call successors, (0), 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 20:01:41,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 410.0) internal successors, (6560), 16 states have internal predecessors, (6560), 0 states have call successors, (0), 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 20:01:41,429 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 410.0) internal successors, (6560), 16 states have internal predecessors, (6560), 0 states have call successors, (0), 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 20:01:41,429 INFO L175 Difference]: Start difference. First operand has 152 places, 138 transitions, 1893 flow. Second operand 15 states and 2026 transitions. [2023-01-27 20:01:41,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 188 transitions, 2462 flow [2023-01-27 20:01:41,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 188 transitions, 2382 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-01-27 20:01:41,460 INFO L231 Difference]: Finished difference. Result has 154 places, 136 transitions, 1936 flow [2023-01-27 20:01:41,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1936, PETRI_PLACES=154, PETRI_TRANSITIONS=136} [2023-01-27 20:01:41,461 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 128 predicate places. [2023-01-27 20:01:41,461 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 136 transitions, 1936 flow [2023-01-27 20:01:41,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 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 20:01:41,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:41,461 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:41,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-01-27 20:01:41,462 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:41,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:41,462 INFO L85 PathProgramCache]: Analyzing trace with hash -646550530, now seen corresponding path program 22 times [2023-01-27 20:01:41,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:41,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900868286] [2023-01-27 20:01:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:41,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:42,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:42,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900868286] [2023-01-27 20:01:42,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900868286] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:42,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:42,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 20:01:42,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592066145] [2023-01-27 20:01:42,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:42,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:01:42,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:42,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:01:42,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:01:42,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-27 20:01:42,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 136 transitions, 1936 flow. Second operand has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 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 20:01:42,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:42,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-27 20:01:42,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:42,540 INFO L130 PetriNetUnfolder]: 530/953 cut-off events. [2023-01-27 20:01:42,541 INFO L131 PetriNetUnfolder]: For 7831/7831 co-relation queries the response was YES. [2023-01-27 20:01:42,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5674 conditions, 953 events. 530/953 cut-off events. For 7831/7831 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4341 event pairs, 24 based on Foata normal form. 1/954 useless extension candidates. Maximal degree in co-relation 5593. Up to 362 conditions per place. [2023-01-27 20:01:42,550 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 111 selfloop transitions, 67 changer transitions 7/185 dead transitions. [2023-01-27 20:01:42,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 185 transitions, 2546 flow [2023-01-27 20:01:42,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 20:01:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 20:01:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1760 transitions. [2023-01-27 20:01:42,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3302063789868668 [2023-01-27 20:01:42,555 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1760 transitions. [2023-01-27 20:01:42,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1760 transitions. [2023-01-27 20:01:42,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:42,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1760 transitions. [2023-01-27 20:01:42,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 135.3846153846154) internal successors, (1760), 13 states have internal predecessors, (1760), 0 states have call successors, (0), 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 20:01:42,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 20:01:42,562 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 20:01:42,562 INFO L175 Difference]: Start difference. First operand has 154 places, 136 transitions, 1936 flow. Second operand 13 states and 1760 transitions. [2023-01-27 20:01:42,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 185 transitions, 2546 flow [2023-01-27 20:01:42,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 185 transitions, 2348 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-01-27 20:01:42,597 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 1931 flow [2023-01-27 20:01:42,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1931, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2023-01-27 20:01:42,598 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 125 predicate places. [2023-01-27 20:01:42,598 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 1931 flow [2023-01-27 20:01:42,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.58333333333334) internal successors, (1555), 12 states have internal predecessors, (1555), 0 states have call successors, (0), 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 20:01:42,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:42,598 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:42,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-01-27 20:01:42,598 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:42,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:42,599 INFO L85 PathProgramCache]: Analyzing trace with hash -840236614, now seen corresponding path program 1 times [2023-01-27 20:01:42,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:42,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381239904] [2023-01-27 20:01:42,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:42,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:42,880 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:42,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:42,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381239904] [2023-01-27 20:01:42,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381239904] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:42,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:42,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:01:42,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693008173] [2023-01-27 20:01:42,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:42,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:01:42,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:42,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:01:42,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:01:42,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 410 [2023-01-27 20:01:42,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 1931 flow. Second operand has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 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 20:01:42,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:42,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 410 [2023-01-27 20:01:42,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:43,202 INFO L130 PetriNetUnfolder]: 566/1008 cut-off events. [2023-01-27 20:01:43,202 INFO L131 PetriNetUnfolder]: For 8758/8758 co-relation queries the response was YES. [2023-01-27 20:01:43,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6092 conditions, 1008 events. 566/1008 cut-off events. For 8758/8758 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4673 event pairs, 117 based on Foata normal form. 4/1012 useless extension candidates. Maximal degree in co-relation 6011. Up to 424 conditions per place. [2023-01-27 20:01:43,209 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 128 selfloop transitions, 55 changer transitions 0/183 dead transitions. [2023-01-27 20:01:43,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 183 transitions, 2702 flow [2023-01-27 20:01:43,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:01:43,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:01:43,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1372 transitions. [2023-01-27 20:01:43,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37181571815718156 [2023-01-27 20:01:43,212 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1372 transitions. [2023-01-27 20:01:43,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1372 transitions. [2023-01-27 20:01:43,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:43,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1372 transitions. [2023-01-27 20:01:43,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.44444444444446) internal successors, (1372), 9 states have internal predecessors, (1372), 0 states have call successors, (0), 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 20:01:43,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:43,217 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:43,217 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 1931 flow. Second operand 9 states and 1372 transitions. [2023-01-27 20:01:43,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 183 transitions, 2702 flow [2023-01-27 20:01:43,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 183 transitions, 2530 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-01-27 20:01:43,249 INFO L231 Difference]: Finished difference. Result has 145 places, 150 transitions, 2020 flow [2023-01-27 20:01:43,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2020, PETRI_PLACES=145, PETRI_TRANSITIONS=150} [2023-01-27 20:01:43,249 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 119 predicate places. [2023-01-27 20:01:43,250 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 150 transitions, 2020 flow [2023-01-27 20:01:43,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 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 20:01:43,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:43,250 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:43,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-01-27 20:01:43,250 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:43,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:43,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1320325120, now seen corresponding path program 2 times [2023-01-27 20:01:43,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:43,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24102276] [2023-01-27 20:01:43,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:43,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:43,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:43,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24102276] [2023-01-27 20:01:43,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24102276] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:43,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:43,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:01:43,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911480958] [2023-01-27 20:01:43,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:43,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:01:43,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:43,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:01:43,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:01:43,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 410 [2023-01-27 20:01:43,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 150 transitions, 2020 flow. Second operand has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 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 20:01:43,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:43,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 410 [2023-01-27 20:01:43,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:43,837 INFO L130 PetriNetUnfolder]: 572/1018 cut-off events. [2023-01-27 20:01:43,838 INFO L131 PetriNetUnfolder]: For 7910/7910 co-relation queries the response was YES. [2023-01-27 20:01:43,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6007 conditions, 1018 events. 572/1018 cut-off events. For 7910/7910 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4707 event pairs, 109 based on Foata normal form. 4/1022 useless extension candidates. Maximal degree in co-relation 5900. Up to 405 conditions per place. [2023-01-27 20:01:43,845 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 131 selfloop transitions, 57 changer transitions 0/188 dead transitions. [2023-01-27 20:01:43,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 188 transitions, 2686 flow [2023-01-27 20:01:43,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:01:43,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:01:43,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1375 transitions. [2023-01-27 20:01:43,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37262872628726285 [2023-01-27 20:01:43,848 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1375 transitions. [2023-01-27 20:01:43,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1375 transitions. [2023-01-27 20:01:43,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:43,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1375 transitions. [2023-01-27 20:01:43,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.77777777777777) internal successors, (1375), 9 states have internal predecessors, (1375), 0 states have call successors, (0), 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 20:01:43,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:43,853 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:43,853 INFO L175 Difference]: Start difference. First operand has 145 places, 150 transitions, 2020 flow. Second operand 9 states and 1375 transitions. [2023-01-27 20:01:43,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 188 transitions, 2686 flow [2023-01-27 20:01:43,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 188 transitions, 2657 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-01-27 20:01:43,885 INFO L231 Difference]: Finished difference. Result has 153 places, 156 transitions, 2207 flow [2023-01-27 20:01:43,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2207, PETRI_PLACES=153, PETRI_TRANSITIONS=156} [2023-01-27 20:01:43,886 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 127 predicate places. [2023-01-27 20:01:43,886 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 156 transitions, 2207 flow [2023-01-27 20:01:43,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 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 20:01:43,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:43,886 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:43,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-01-27 20:01:43,887 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:43,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:43,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1989493530, now seen corresponding path program 3 times [2023-01-27 20:01:43,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:43,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236111983] [2023-01-27 20:01:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:43,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:44,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:44,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236111983] [2023-01-27 20:01:44,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236111983] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:44,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:44,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:01:44,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026310850] [2023-01-27 20:01:44,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:44,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:01:44,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:44,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:01:44,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:01:44,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 410 [2023-01-27 20:01:44,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 156 transitions, 2207 flow. Second operand has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 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 20:01:44,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:44,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 410 [2023-01-27 20:01:44,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:44,467 INFO L130 PetriNetUnfolder]: 556/988 cut-off events. [2023-01-27 20:01:44,467 INFO L131 PetriNetUnfolder]: For 7914/7914 co-relation queries the response was YES. [2023-01-27 20:01:44,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 988 events. 556/988 cut-off events. For 7914/7914 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4505 event pairs, 91 based on Foata normal form. 4/992 useless extension candidates. Maximal degree in co-relation 5902. Up to 308 conditions per place. [2023-01-27 20:01:44,491 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 146 selfloop transitions, 63 changer transitions 2/211 dead transitions. [2023-01-27 20:01:44,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 211 transitions, 3101 flow [2023-01-27 20:01:44,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:01:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:01:44,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1385 transitions. [2023-01-27 20:01:44,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37533875338753386 [2023-01-27 20:01:44,494 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1385 transitions. [2023-01-27 20:01:44,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1385 transitions. [2023-01-27 20:01:44,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:44,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1385 transitions. [2023-01-27 20:01:44,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.88888888888889) internal successors, (1385), 9 states have internal predecessors, (1385), 0 states have call successors, (0), 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 20:01:44,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:44,498 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:44,499 INFO L175 Difference]: Start difference. First operand has 153 places, 156 transitions, 2207 flow. Second operand 9 states and 1385 transitions. [2023-01-27 20:01:44,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 211 transitions, 3101 flow [2023-01-27 20:01:44,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 211 transitions, 3072 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-27 20:01:44,533 INFO L231 Difference]: Finished difference. Result has 161 places, 162 transitions, 2445 flow [2023-01-27 20:01:44,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2445, PETRI_PLACES=161, PETRI_TRANSITIONS=162} [2023-01-27 20:01:44,534 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 135 predicate places. [2023-01-27 20:01:44,534 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 162 transitions, 2445 flow [2023-01-27 20:01:44,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 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 20:01:44,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:44,534 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:44,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-01-27 20:01:44,534 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:44,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:44,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2037644614, now seen corresponding path program 4 times [2023-01-27 20:01:44,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:44,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135396380] [2023-01-27 20:01:44,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:44,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:44,797 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:44,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:44,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135396380] [2023-01-27 20:01:44,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135396380] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:44,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:44,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:01:44,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244795318] [2023-01-27 20:01:44,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:44,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:01:44,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:44,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:01:44,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:01:44,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 410 [2023-01-27 20:01:44,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 162 transitions, 2445 flow. Second operand has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 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 20:01:44,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:44,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 410 [2023-01-27 20:01:44,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:45,182 INFO L130 PetriNetUnfolder]: 596/1058 cut-off events. [2023-01-27 20:01:45,182 INFO L131 PetriNetUnfolder]: For 10084/10084 co-relation queries the response was YES. [2023-01-27 20:01:45,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6662 conditions, 1058 events. 596/1058 cut-off events. For 10084/10084 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4895 event pairs, 55 based on Foata normal form. 4/1062 useless extension candidates. Maximal degree in co-relation 6551. Up to 475 conditions per place. [2023-01-27 20:01:45,192 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 183 selfloop transitions, 34 changer transitions 4/221 dead transitions. [2023-01-27 20:01:45,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 221 transitions, 3441 flow [2023-01-27 20:01:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:01:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:01:45,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1079 transitions. [2023-01-27 20:01:45,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3759581881533101 [2023-01-27 20:01:45,195 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1079 transitions. [2023-01-27 20:01:45,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1079 transitions. [2023-01-27 20:01:45,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:45,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1079 transitions. [2023-01-27 20:01:45,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.14285714285714) internal successors, (1079), 7 states have internal predecessors, (1079), 0 states have call successors, (0), 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 20:01:45,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 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 20:01:45,198 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 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 20:01:45,199 INFO L175 Difference]: Start difference. First operand has 161 places, 162 transitions, 2445 flow. Second operand 7 states and 1079 transitions. [2023-01-27 20:01:45,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 221 transitions, 3441 flow [2023-01-27 20:01:45,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 221 transitions, 3351 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-01-27 20:01:45,243 INFO L231 Difference]: Finished difference. Result has 164 places, 168 transitions, 2584 flow [2023-01-27 20:01:45,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2584, PETRI_PLACES=164, PETRI_TRANSITIONS=168} [2023-01-27 20:01:45,243 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 138 predicate places. [2023-01-27 20:01:45,244 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 168 transitions, 2584 flow [2023-01-27 20:01:45,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 states have internal predecessors, (1316), 0 states have call successors, (0), 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 20:01:45,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:45,244 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:45,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-01-27 20:01:45,245 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:45,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:45,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1323057116, now seen corresponding path program 5 times [2023-01-27 20:01:45,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:45,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567422072] [2023-01-27 20:01:45,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:45,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:45,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:45,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567422072] [2023-01-27 20:01:45,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567422072] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:01:45,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788933574] [2023-01-27 20:01:45,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:01:45,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:45,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:01:45,523 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 20:01:45,526 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 20:01:45,715 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-27 20:01:45,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:01:45,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-27 20:01:45,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:01:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:45,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:01:45,928 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-27 20:01:45,928 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 57 [2023-01-27 20:01:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:45,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788933574] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:01:45,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:01:45,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 16 [2023-01-27 20:01:45,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187720976] [2023-01-27 20:01:45,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:01:45,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 20:01:45,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:45,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 20:01:45,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-01-27 20:01:45,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 410 [2023-01-27 20:01:45,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 168 transitions, 2584 flow. Second operand has 16 states, 16 states have (on average 143.5) internal successors, (2296), 16 states have internal predecessors, (2296), 0 states have call successors, (0), 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 20:01:45,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:45,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 410 [2023-01-27 20:01:45,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:46,444 INFO L130 PetriNetUnfolder]: 615/1095 cut-off events. [2023-01-27 20:01:46,444 INFO L131 PetriNetUnfolder]: For 10651/10651 co-relation queries the response was YES. [2023-01-27 20:01:46,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6857 conditions, 1095 events. 615/1095 cut-off events. For 10651/10651 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5139 event pairs, 103 based on Foata normal form. 4/1099 useless extension candidates. Maximal degree in co-relation 6744. Up to 450 conditions per place. [2023-01-27 20:01:46,453 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 148 selfloop transitions, 81 changer transitions 2/231 dead transitions. [2023-01-27 20:01:46,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 231 transitions, 3553 flow [2023-01-27 20:01:46,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 20:01:46,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 20:01:46,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1782 transitions. [2023-01-27 20:01:46,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3621951219512195 [2023-01-27 20:01:46,456 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1782 transitions. [2023-01-27 20:01:46,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1782 transitions. [2023-01-27 20:01:46,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:46,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1782 transitions. [2023-01-27 20:01:46,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 148.5) internal successors, (1782), 12 states have internal predecessors, (1782), 0 states have call successors, (0), 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 20:01:46,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:01:46,462 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:01:46,463 INFO L175 Difference]: Start difference. First operand has 164 places, 168 transitions, 2584 flow. Second operand 12 states and 1782 transitions. [2023-01-27 20:01:46,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 231 transitions, 3553 flow [2023-01-27 20:01:46,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 231 transitions, 3434 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-01-27 20:01:46,507 INFO L231 Difference]: Finished difference. Result has 171 places, 176 transitions, 2779 flow [2023-01-27 20:01:46,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2446, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2779, PETRI_PLACES=171, PETRI_TRANSITIONS=176} [2023-01-27 20:01:46,507 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 145 predicate places. [2023-01-27 20:01:46,507 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 176 transitions, 2779 flow [2023-01-27 20:01:46,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 143.5) internal successors, (2296), 16 states have internal predecessors, (2296), 0 states have call successors, (0), 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 20:01:46,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:46,508 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:46,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-01-27 20:01:46,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:46,709 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:46,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:46,709 INFO L85 PathProgramCache]: Analyzing trace with hash 362584518, now seen corresponding path program 6 times [2023-01-27 20:01:46,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:46,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735545350] [2023-01-27 20:01:46,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:46,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:46,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:46,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735545350] [2023-01-27 20:01:46,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735545350] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:01:46,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396505877] [2023-01-27 20:01:46,974 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:01:46,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:46,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:01:46,975 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 20:01:46,977 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 20:01:47,147 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 20:01:47,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:01:47,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-27 20:01:47,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:01:47,265 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:47,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:01:47,340 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-27 20:01:47,341 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 57 [2023-01-27 20:01:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:47,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396505877] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:01:47,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:01:47,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 17 [2023-01-27 20:01:47,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275400375] [2023-01-27 20:01:47,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:01:47,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 20:01:47,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:47,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 20:01:47,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-01-27 20:01:47,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 410 [2023-01-27 20:01:47,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 176 transitions, 2779 flow. Second operand has 17 states, 17 states have (on average 143.35294117647058) internal successors, (2437), 17 states have internal predecessors, (2437), 0 states have call successors, (0), 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 20:01:47,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:47,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 410 [2023-01-27 20:01:47,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:47,847 INFO L130 PetriNetUnfolder]: 597/1057 cut-off events. [2023-01-27 20:01:47,848 INFO L131 PetriNetUnfolder]: For 10352/10352 co-relation queries the response was YES. [2023-01-27 20:01:47,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6807 conditions, 1057 events. 597/1057 cut-off events. For 10352/10352 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4879 event pairs, 107 based on Foata normal form. 4/1061 useless extension candidates. Maximal degree in co-relation 6693. Up to 494 conditions per place. [2023-01-27 20:01:47,858 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 132 selfloop transitions, 80 changer transitions 0/212 dead transitions. [2023-01-27 20:01:47,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 212 transitions, 3404 flow [2023-01-27 20:01:47,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:01:47,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:01:47,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1631 transitions. [2023-01-27 20:01:47,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3616407982261641 [2023-01-27 20:01:47,861 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1631 transitions. [2023-01-27 20:01:47,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1631 transitions. [2023-01-27 20:01:47,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:47,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1631 transitions. [2023-01-27 20:01:47,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 148.27272727272728) internal successors, (1631), 11 states have internal predecessors, (1631), 0 states have call successors, (0), 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 20:01:47,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 20:01:47,866 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 20:01:47,866 INFO L175 Difference]: Start difference. First operand has 171 places, 176 transitions, 2779 flow. Second operand 11 states and 1631 transitions. [2023-01-27 20:01:47,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 212 transitions, 3404 flow [2023-01-27 20:01:47,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 212 transitions, 3119 flow, removed 43 selfloop flow, removed 18 redundant places. [2023-01-27 20:01:47,910 INFO L231 Difference]: Finished difference. Result has 159 places, 171 transitions, 2594 flow [2023-01-27 20:01:47,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2594, PETRI_PLACES=159, PETRI_TRANSITIONS=171} [2023-01-27 20:01:47,911 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 133 predicate places. [2023-01-27 20:01:47,911 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 171 transitions, 2594 flow [2023-01-27 20:01:47,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 143.35294117647058) internal successors, (2437), 17 states have internal predecessors, (2437), 0 states have call successors, (0), 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 20:01:47,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:47,912 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:47,923 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 20:01:48,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:01:48,118 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:48,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:48,118 INFO L85 PathProgramCache]: Analyzing trace with hash -310847470, now seen corresponding path program 7 times [2023-01-27 20:01:48,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:48,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670024079] [2023-01-27 20:01:48,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:48,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:48,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:48,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670024079] [2023-01-27 20:01:48,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670024079] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:48,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:48,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:01:48,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807479892] [2023-01-27 20:01:48,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:48,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:01:48,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:48,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:01:48,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:01:48,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 410 [2023-01-27 20:01:48,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 171 transitions, 2594 flow. Second operand has 9 states, 9 states have (on average 142.22222222222223) internal successors, (1280), 9 states have internal predecessors, (1280), 0 states have call successors, (0), 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 20:01:48,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:48,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 410 [2023-01-27 20:01:48,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:48,773 INFO L130 PetriNetUnfolder]: 581/1027 cut-off events. [2023-01-27 20:01:48,773 INFO L131 PetriNetUnfolder]: For 9034/9034 co-relation queries the response was YES. [2023-01-27 20:01:48,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6372 conditions, 1027 events. 581/1027 cut-off events. For 9034/9034 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4711 event pairs, 112 based on Foata normal form. 4/1031 useless extension candidates. Maximal degree in co-relation 6272. Up to 359 conditions per place. [2023-01-27 20:01:48,779 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 113 selfloop transitions, 80 changer transitions 2/195 dead transitions. [2023-01-27 20:01:48,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 195 transitions, 3134 flow [2023-01-27 20:01:48,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:01:48,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:01:48,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1329 transitions. [2023-01-27 20:01:48,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36016260162601627 [2023-01-27 20:01:48,781 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1329 transitions. [2023-01-27 20:01:48,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1329 transitions. [2023-01-27 20:01:48,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:48,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1329 transitions. [2023-01-27 20:01:48,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 147.66666666666666) internal successors, (1329), 9 states have internal predecessors, (1329), 0 states have call successors, (0), 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 20:01:48,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:48,785 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 410.0) internal successors, (4100), 10 states have internal predecessors, (4100), 0 states have call successors, (0), 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 20:01:48,785 INFO L175 Difference]: Start difference. First operand has 159 places, 171 transitions, 2594 flow. Second operand 9 states and 1329 transitions. [2023-01-27 20:01:48,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 195 transitions, 3134 flow [2023-01-27 20:01:48,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 195 transitions, 3065 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-01-27 20:01:48,818 INFO L231 Difference]: Finished difference. Result has 160 places, 167 transitions, 2641 flow [2023-01-27 20:01:48,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2494, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2641, PETRI_PLACES=160, PETRI_TRANSITIONS=167} [2023-01-27 20:01:48,819 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 134 predicate places. [2023-01-27 20:01:48,819 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 167 transitions, 2641 flow [2023-01-27 20:01:48,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 142.22222222222223) internal successors, (1280), 9 states have internal predecessors, (1280), 0 states have call successors, (0), 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 20:01:48,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:48,823 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:48,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-01-27 20:01:48,823 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:48,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:48,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2085281639, now seen corresponding path program 1 times [2023-01-27 20:01:48,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:48,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709047066] [2023-01-27 20:01:48,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:48,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:49,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:49,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709047066] [2023-01-27 20:01:49,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709047066] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:49,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:49,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:01:49,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699945777] [2023-01-27 20:01:49,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:49,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:01:49,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:49,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:01:49,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:01:49,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:01:49,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 167 transitions, 2641 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:01:49,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:49,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:01:49,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:50,077 INFO L130 PetriNetUnfolder]: 779/1372 cut-off events. [2023-01-27 20:01:50,078 INFO L131 PetriNetUnfolder]: For 11657/11657 co-relation queries the response was YES. [2023-01-27 20:01:50,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8295 conditions, 1372 events. 779/1372 cut-off events. For 11657/11657 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6742 event pairs, 77 based on Foata normal form. 1/1373 useless extension candidates. Maximal degree in co-relation 8195. Up to 227 conditions per place. [2023-01-27 20:01:50,085 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 190 selfloop transitions, 141 changer transitions 5/336 dead transitions. [2023-01-27 20:01:50,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 336 transitions, 4769 flow [2023-01-27 20:01:50,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-27 20:01:50,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-27 20:01:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3045 transitions. [2023-01-27 20:01:50,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375831485587583 [2023-01-27 20:01:50,089 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3045 transitions. [2023-01-27 20:01:50,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3045 transitions. [2023-01-27 20:01:50,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:50,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3045 transitions. [2023-01-27 20:01:50,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 138.4090909090909) internal successors, (3045), 22 states have internal predecessors, (3045), 0 states have call successors, (0), 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 20:01:50,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 20:01:50,098 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 20:01:50,098 INFO L175 Difference]: Start difference. First operand has 160 places, 167 transitions, 2641 flow. Second operand 22 states and 3045 transitions. [2023-01-27 20:01:50,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 336 transitions, 4769 flow [2023-01-27 20:01:50,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 336 transitions, 4603 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-01-27 20:01:50,140 INFO L231 Difference]: Finished difference. Result has 182 places, 227 transitions, 3813 flow [2023-01-27 20:01:50,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=2508, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3813, PETRI_PLACES=182, PETRI_TRANSITIONS=227} [2023-01-27 20:01:50,140 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 156 predicate places. [2023-01-27 20:01:50,140 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 227 transitions, 3813 flow [2023-01-27 20:01:50,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:01:50,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:50,141 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:50,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-01-27 20:01:50,141 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:50,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:50,141 INFO L85 PathProgramCache]: Analyzing trace with hash 667533083, now seen corresponding path program 2 times [2023-01-27 20:01:50,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:50,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608152727] [2023-01-27 20:01:50,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:50,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:50,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:50,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608152727] [2023-01-27 20:01:50,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608152727] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:50,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:50,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 20:01:50,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78517970] [2023-01-27 20:01:50,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:50,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:01:50,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:50,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:01:50,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:01:50,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:01:50,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 227 transitions, 3813 flow. Second operand has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 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 20:01:50,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:50,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:01:50,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:51,390 INFO L130 PetriNetUnfolder]: 941/1663 cut-off events. [2023-01-27 20:01:51,391 INFO L131 PetriNetUnfolder]: For 17550/17550 co-relation queries the response was YES. [2023-01-27 20:01:51,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10755 conditions, 1663 events. 941/1663 cut-off events. For 17550/17550 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8740 event pairs, 65 based on Foata normal form. 10/1673 useless extension candidates. Maximal degree in co-relation 10651. Up to 269 conditions per place. [2023-01-27 20:01:51,400 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 191 selfloop transitions, 145 changer transitions 12/348 dead transitions. [2023-01-27 20:01:51,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 348 transitions, 5614 flow [2023-01-27 20:01:51,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-27 20:01:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-27 20:01:51,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2623 transitions. [2023-01-27 20:01:51,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3367137355584082 [2023-01-27 20:01:51,403 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2623 transitions. [2023-01-27 20:01:51,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2623 transitions. [2023-01-27 20:01:51,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:51,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2623 transitions. [2023-01-27 20:01:51,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 138.05263157894737) internal successors, (2623), 19 states have internal predecessors, (2623), 0 states have call successors, (0), 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 20:01:51,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 20:01:51,411 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 20:01:51,412 INFO L175 Difference]: Start difference. First operand has 182 places, 227 transitions, 3813 flow. Second operand 19 states and 2623 transitions. [2023-01-27 20:01:51,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 348 transitions, 5614 flow [2023-01-27 20:01:51,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 348 transitions, 5459 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-01-27 20:01:51,473 INFO L231 Difference]: Finished difference. Result has 205 places, 253 transitions, 4485 flow [2023-01-27 20:01:51,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=3673, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4485, PETRI_PLACES=205, PETRI_TRANSITIONS=253} [2023-01-27 20:01:51,474 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 179 predicate places. [2023-01-27 20:01:51,474 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 253 transitions, 4485 flow [2023-01-27 20:01:51,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 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 20:01:51,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:51,475 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:51,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-01-27 20:01:51,475 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:51,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:51,475 INFO L85 PathProgramCache]: Analyzing trace with hash 888752717, now seen corresponding path program 3 times [2023-01-27 20:01:51,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:51,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018660684] [2023-01-27 20:01:51,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:51,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:52,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:52,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018660684] [2023-01-27 20:01:52,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018660684] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:52,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:52,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:01:52,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143053395] [2023-01-27 20:01:52,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:52,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:01:52,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:52,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:01:52,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:01:52,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:01:52,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 253 transitions, 4485 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:01:52,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:52,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:01:52,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:52,996 INFO L130 PetriNetUnfolder]: 1087/1908 cut-off events. [2023-01-27 20:01:52,996 INFO L131 PetriNetUnfolder]: For 20831/20831 co-relation queries the response was YES. [2023-01-27 20:01:53,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12887 conditions, 1908 events. 1087/1908 cut-off events. For 20831/20831 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10109 event pairs, 119 based on Foata normal form. 3/1911 useless extension candidates. Maximal degree in co-relation 12769. Up to 342 conditions per place. [2023-01-27 20:01:53,009 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 246 selfloop transitions, 172 changer transitions 8/426 dead transitions. [2023-01-27 20:01:53,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 426 transitions, 6572 flow [2023-01-27 20:01:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-27 20:01:53,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-27 20:01:53,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3617 transitions. [2023-01-27 20:01:53,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393058161350844 [2023-01-27 20:01:53,014 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3617 transitions. [2023-01-27 20:01:53,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3617 transitions. [2023-01-27 20:01:53,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:53,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3617 transitions. [2023-01-27 20:01:53,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 139.1153846153846) internal successors, (3617), 26 states have internal predecessors, (3617), 0 states have call successors, (0), 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 20:01:53,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 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 20:01:53,026 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 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 20:01:53,026 INFO L175 Difference]: Start difference. First operand has 205 places, 253 transitions, 4485 flow. Second operand 26 states and 3617 transitions. [2023-01-27 20:01:53,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 426 transitions, 6572 flow [2023-01-27 20:01:53,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 426 transitions, 6453 flow, removed 41 selfloop flow, removed 5 redundant places. [2023-01-27 20:01:53,102 INFO L231 Difference]: Finished difference. Result has 231 places, 275 transitions, 5127 flow [2023-01-27 20:01:53,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=4386, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5127, PETRI_PLACES=231, PETRI_TRANSITIONS=275} [2023-01-27 20:01:53,103 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 205 predicate places. [2023-01-27 20:01:53,103 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 275 transitions, 5127 flow [2023-01-27 20:01:53,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:01:53,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:53,103 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:53,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-01-27 20:01:53,104 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:53,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:53,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1880887905, now seen corresponding path program 4 times [2023-01-27 20:01:53,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:53,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352499021] [2023-01-27 20:01:53,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:53,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:53,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:53,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352499021] [2023-01-27 20:01:53,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352499021] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:53,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:53,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:01:53,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521605620] [2023-01-27 20:01:53,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:53,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:01:53,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:53,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:01:53,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:01:53,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:01:53,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 275 transitions, 5127 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:01:53,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:53,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:01:53,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:54,390 INFO L130 PetriNetUnfolder]: 1128/1993 cut-off events. [2023-01-27 20:01:54,391 INFO L131 PetriNetUnfolder]: For 24120/24120 co-relation queries the response was YES. [2023-01-27 20:01:54,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14386 conditions, 1993 events. 1128/1993 cut-off events. For 24120/24120 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10773 event pairs, 194 based on Foata normal form. 1/1994 useless extension candidates. Maximal degree in co-relation 14261. Up to 580 conditions per place. [2023-01-27 20:01:54,406 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 202 selfloop transitions, 163 changer transitions 6/371 dead transitions. [2023-01-27 20:01:54,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 371 transitions, 6732 flow [2023-01-27 20:01:54,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-27 20:01:54,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-27 20:01:54,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3017 transitions. [2023-01-27 20:01:54,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3344789356984479 [2023-01-27 20:01:54,409 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3017 transitions. [2023-01-27 20:01:54,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3017 transitions. [2023-01-27 20:01:54,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:54,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3017 transitions. [2023-01-27 20:01:54,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.13636363636363) internal successors, (3017), 22 states have internal predecessors, (3017), 0 states have call successors, (0), 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 20:01:54,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 20:01:54,419 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 20:01:54,419 INFO L175 Difference]: Start difference. First operand has 231 places, 275 transitions, 5127 flow. Second operand 22 states and 3017 transitions. [2023-01-27 20:01:54,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 371 transitions, 6732 flow [2023-01-27 20:01:54,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 371 transitions, 6502 flow, removed 23 selfloop flow, removed 13 redundant places. [2023-01-27 20:01:54,504 INFO L231 Difference]: Finished difference. Result has 245 places, 296 transitions, 5749 flow [2023-01-27 20:01:54,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=4925, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5749, PETRI_PLACES=245, PETRI_TRANSITIONS=296} [2023-01-27 20:01:54,504 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 219 predicate places. [2023-01-27 20:01:54,504 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 296 transitions, 5749 flow [2023-01-27 20:01:54,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:01:54,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:54,505 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:54,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-01-27 20:01:54,505 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:54,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:54,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1306807323, now seen corresponding path program 5 times [2023-01-27 20:01:54,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:54,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457418205] [2023-01-27 20:01:54,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:54,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:55,044 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:55,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:55,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457418205] [2023-01-27 20:01:55,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457418205] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:55,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:55,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:01:55,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591686591] [2023-01-27 20:01:55,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:55,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:01:55,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:55,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:01:55,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:01:55,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:01:55,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 296 transitions, 5749 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:01:55,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:55,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:01:55,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:55,817 INFO L130 PetriNetUnfolder]: 1136/2017 cut-off events. [2023-01-27 20:01:55,817 INFO L131 PetriNetUnfolder]: For 26640/26640 co-relation queries the response was YES. [2023-01-27 20:01:55,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14854 conditions, 2017 events. 1136/2017 cut-off events. For 26640/26640 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11075 event pairs, 190 based on Foata normal form. 1/2018 useless extension candidates. Maximal degree in co-relation 14722. Up to 580 conditions per place. [2023-01-27 20:01:55,831 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 206 selfloop transitions, 160 changer transitions 6/372 dead transitions. [2023-01-27 20:01:55,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 372 transitions, 7055 flow [2023-01-27 20:01:55,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-27 20:01:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-27 20:01:55,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2610 transitions. [2023-01-27 20:01:55,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33504492939666236 [2023-01-27 20:01:55,833 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2610 transitions. [2023-01-27 20:01:55,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2610 transitions. [2023-01-27 20:01:55,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:55,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2610 transitions. [2023-01-27 20:01:55,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 137.3684210526316) internal successors, (2610), 19 states have internal predecessors, (2610), 0 states have call successors, (0), 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 20:01:55,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 20:01:55,841 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 20:01:55,841 INFO L175 Difference]: Start difference. First operand has 245 places, 296 transitions, 5749 flow. Second operand 19 states and 2610 transitions. [2023-01-27 20:01:55,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 372 transitions, 7055 flow [2023-01-27 20:01:55,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 372 transitions, 6837 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-01-27 20:01:55,922 INFO L231 Difference]: Finished difference. Result has 258 places, 301 transitions, 6024 flow [2023-01-27 20:01:55,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=5541, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6024, PETRI_PLACES=258, PETRI_TRANSITIONS=301} [2023-01-27 20:01:55,923 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 232 predicate places. [2023-01-27 20:01:55,923 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 301 transitions, 6024 flow [2023-01-27 20:01:55,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:01:55,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:55,924 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:55,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-01-27 20:01:55,924 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:55,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:55,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1266843037, now seen corresponding path program 6 times [2023-01-27 20:01:55,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:55,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392126778] [2023-01-27 20:01:55,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:55,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:56,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:56,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392126778] [2023-01-27 20:01:56,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392126778] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:56,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:56,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 20:01:56,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392903306] [2023-01-27 20:01:56,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:56,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:01:56,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:56,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:01:56,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:01:56,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-27 20:01:56,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 301 transitions, 6024 flow. Second operand has 12 states, 12 states have (on average 133.75) internal successors, (1605), 12 states have internal predecessors, (1605), 0 states have call successors, (0), 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 20:01:56,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:56,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-27 20:01:56,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:57,497 INFO L130 PetriNetUnfolder]: 1347/2467 cut-off events. [2023-01-27 20:01:57,497 INFO L131 PetriNetUnfolder]: For 31025/31025 co-relation queries the response was YES. [2023-01-27 20:01:57,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17657 conditions, 2467 events. 1347/2467 cut-off events. For 31025/31025 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14384 event pairs, 112 based on Foata normal form. 2/2469 useless extension candidates. Maximal degree in co-relation 17521. Up to 484 conditions per place. [2023-01-27 20:01:57,514 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 218 selfloop transitions, 228 changer transitions 9/455 dead transitions. [2023-01-27 20:01:57,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 455 transitions, 8172 flow [2023-01-27 20:01:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-27 20:01:57,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-27 20:01:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3641 transitions. [2023-01-27 20:01:57,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34155722326454035 [2023-01-27 20:01:57,517 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3641 transitions. [2023-01-27 20:01:57,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3641 transitions. [2023-01-27 20:01:57,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:57,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3641 transitions. [2023-01-27 20:01:57,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 140.03846153846155) internal successors, (3641), 26 states have internal predecessors, (3641), 0 states have call successors, (0), 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 20:01:57,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 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 20:01:57,524 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 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 20:01:57,524 INFO L175 Difference]: Start difference. First operand has 258 places, 301 transitions, 6024 flow. Second operand 26 states and 3641 transitions. [2023-01-27 20:01:57,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 455 transitions, 8172 flow [2023-01-27 20:01:57,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 455 transitions, 7816 flow, removed 10 selfloop flow, removed 15 redundant places. [2023-01-27 20:01:57,619 INFO L231 Difference]: Finished difference. Result has 275 places, 340 transitions, 6873 flow [2023-01-27 20:01:57,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=5697, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6873, PETRI_PLACES=275, PETRI_TRANSITIONS=340} [2023-01-27 20:01:57,620 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 249 predicate places. [2023-01-27 20:01:57,620 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 340 transitions, 6873 flow [2023-01-27 20:01:57,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 133.75) internal successors, (1605), 12 states have internal predecessors, (1605), 0 states have call successors, (0), 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 20:01:57,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:57,620 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:57,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-01-27 20:01:57,621 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:57,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:57,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1703155119, now seen corresponding path program 7 times [2023-01-27 20:01:57,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:57,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066164141] [2023-01-27 20:01:57,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:57,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:58,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:58,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066164141] [2023-01-27 20:01:58,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066164141] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:58,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:58,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:01:58,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280898602] [2023-01-27 20:01:58,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:58,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:01:58,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:58,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:01:58,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:01:58,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:01:58,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 340 transitions, 6873 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:01:58,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:58,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:01:58,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:01:59,087 INFO L130 PetriNetUnfolder]: 1395/2544 cut-off events. [2023-01-27 20:01:59,088 INFO L131 PetriNetUnfolder]: For 35241/35241 co-relation queries the response was YES. [2023-01-27 20:01:59,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19094 conditions, 2544 events. 1395/2544 cut-off events. For 35241/35241 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14857 event pairs, 211 based on Foata normal form. 1/2545 useless extension candidates. Maximal degree in co-relation 18951. Up to 871 conditions per place. [2023-01-27 20:01:59,107 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 248 selfloop transitions, 181 changer transitions 6/435 dead transitions. [2023-01-27 20:01:59,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 435 transitions, 8561 flow [2023-01-27 20:01:59,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-27 20:01:59,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-27 20:01:59,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3020 transitions. [2023-01-27 20:01:59,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3348115299334812 [2023-01-27 20:01:59,109 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3020 transitions. [2023-01-27 20:01:59,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3020 transitions. [2023-01-27 20:01:59,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:01:59,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3020 transitions. [2023-01-27 20:01:59,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.27272727272728) internal successors, (3020), 22 states have internal predecessors, (3020), 0 states have call successors, (0), 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 20:01:59,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 20:01:59,115 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 20:01:59,115 INFO L175 Difference]: Start difference. First operand has 275 places, 340 transitions, 6873 flow. Second operand 22 states and 3020 transitions. [2023-01-27 20:01:59,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 435 transitions, 8561 flow [2023-01-27 20:01:59,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 435 transitions, 8037 flow, removed 61 selfloop flow, removed 20 redundant places. [2023-01-27 20:01:59,239 INFO L231 Difference]: Finished difference. Result has 280 places, 353 transitions, 7083 flow [2023-01-27 20:01:59,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=6392, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7083, PETRI_PLACES=280, PETRI_TRANSITIONS=353} [2023-01-27 20:01:59,239 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 254 predicate places. [2023-01-27 20:01:59,239 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 353 transitions, 7083 flow [2023-01-27 20:01:59,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:01:59,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:01:59,240 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:01:59,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-01-27 20:01:59,240 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:01:59,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:01:59,240 INFO L85 PathProgramCache]: Analyzing trace with hash 922318553, now seen corresponding path program 8 times [2023-01-27 20:01:59,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:01:59,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721917307] [2023-01-27 20:01:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:01:59,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:01:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:01:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:01:59,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:01:59,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721917307] [2023-01-27 20:01:59,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721917307] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:01:59,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:01:59,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:01:59,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525101046] [2023-01-27 20:01:59,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:01:59,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:01:59,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:01:59,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:01:59,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:01:59,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:01:59,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 353 transitions, 7083 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:01:59,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:01:59,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:01:59,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:00,645 INFO L130 PetriNetUnfolder]: 1390/2533 cut-off events. [2023-01-27 20:02:00,646 INFO L131 PetriNetUnfolder]: For 32940/32940 co-relation queries the response was YES. [2023-01-27 20:02:00,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18955 conditions, 2533 events. 1390/2533 cut-off events. For 32940/32940 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14779 event pairs, 216 based on Foata normal form. 3/2536 useless extension candidates. Maximal degree in co-relation 18810. Up to 919 conditions per place. [2023-01-27 20:02:00,667 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 231 selfloop transitions, 175 changer transitions 11/417 dead transitions. [2023-01-27 20:02:00,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 417 transitions, 8236 flow [2023-01-27 20:02:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-27 20:02:00,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-27 20:02:00,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2742 transitions. [2023-01-27 20:02:00,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33439024390243904 [2023-01-27 20:02:00,670 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2742 transitions. [2023-01-27 20:02:00,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2742 transitions. [2023-01-27 20:02:00,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:00,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2742 transitions. [2023-01-27 20:02:00,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.1) internal successors, (2742), 20 states have internal predecessors, (2742), 0 states have call successors, (0), 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 20:02:00,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 410.0) internal successors, (8610), 21 states have internal predecessors, (8610), 0 states have call successors, (0), 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 20:02:00,677 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 410.0) internal successors, (8610), 21 states have internal predecessors, (8610), 0 states have call successors, (0), 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 20:02:00,677 INFO L175 Difference]: Start difference. First operand has 280 places, 353 transitions, 7083 flow. Second operand 20 states and 2742 transitions. [2023-01-27 20:02:00,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 417 transitions, 8236 flow [2023-01-27 20:02:00,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 417 transitions, 7950 flow, removed 12 selfloop flow, removed 14 redundant places. [2023-01-27 20:02:00,811 INFO L231 Difference]: Finished difference. Result has 286 places, 349 transitions, 7063 flow [2023-01-27 20:02:00,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=6772, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7063, PETRI_PLACES=286, PETRI_TRANSITIONS=349} [2023-01-27 20:02:00,811 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 260 predicate places. [2023-01-27 20:02:00,811 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 349 transitions, 7063 flow [2023-01-27 20:02:00,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:00,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:00,812 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:00,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-01-27 20:02:00,812 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:00,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:00,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2017731595, now seen corresponding path program 9 times [2023-01-27 20:02:00,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:00,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563071972] [2023-01-27 20:02:00,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:00,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-27 20:02:01,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:01,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563071972] [2023-01-27 20:02:01,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563071972] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:02:01,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338358163] [2023-01-27 20:02:01,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:02:01,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:02:01,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:02:01,741 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 20:02:01,767 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 20:02:01,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 20:02:01,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:02:01,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-27 20:02:01,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:02:02,488 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:02,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:02:02,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338358163] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:02,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:02:02,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 28 [2023-01-27 20:02:02,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024187595] [2023-01-27 20:02:02,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:02,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:02:02,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:02,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:02:02,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2023-01-27 20:02:02,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:02:02,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 349 transitions, 7063 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:02,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:02,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:02:02,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:03,460 INFO L130 PetriNetUnfolder]: 1386/2517 cut-off events. [2023-01-27 20:02:03,461 INFO L131 PetriNetUnfolder]: For 34874/34874 co-relation queries the response was YES. [2023-01-27 20:02:03,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18880 conditions, 2517 events. 1386/2517 cut-off events. For 34874/34874 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14570 event pairs, 214 based on Foata normal form. 1/2518 useless extension candidates. Maximal degree in co-relation 18733. Up to 1256 conditions per place. [2023-01-27 20:02:03,494 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 273 selfloop transitions, 127 changer transitions 5/405 dead transitions. [2023-01-27 20:02:03,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 405 transitions, 8207 flow [2023-01-27 20:02:03,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 20:02:03,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 20:02:03,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1938 transitions. [2023-01-27 20:02:03,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3376306620209059 [2023-01-27 20:02:03,497 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1938 transitions. [2023-01-27 20:02:03,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1938 transitions. [2023-01-27 20:02:03,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:03,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1938 transitions. [2023-01-27 20:02:03,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 138.42857142857142) internal successors, (1938), 14 states have internal predecessors, (1938), 0 states have call successors, (0), 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 20:02:03,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 20:02:03,503 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 20:02:03,503 INFO L175 Difference]: Start difference. First operand has 286 places, 349 transitions, 7063 flow. Second operand 14 states and 1938 transitions. [2023-01-27 20:02:03,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 405 transitions, 8207 flow [2023-01-27 20:02:03,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 405 transitions, 7870 flow, removed 3 selfloop flow, removed 19 redundant places. [2023-01-27 20:02:03,643 INFO L231 Difference]: Finished difference. Result has 278 places, 352 transitions, 7034 flow [2023-01-27 20:02:03,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=6726, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7034, PETRI_PLACES=278, PETRI_TRANSITIONS=352} [2023-01-27 20:02:03,643 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 252 predicate places. [2023-01-27 20:02:03,643 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 352 transitions, 7034 flow [2023-01-27 20:02:03,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:03,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:03,644 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:03,649 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 20:02:03,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:02:03,845 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:03,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:03,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1516426929, now seen corresponding path program 10 times [2023-01-27 20:02:03,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:03,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902420817] [2023-01-27 20:02:03,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:03,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:04,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:04,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902420817] [2023-01-27 20:02:04,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902420817] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:04,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:04,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:02:04,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220408099] [2023-01-27 20:02:04,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:04,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:02:04,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:04,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:02:04,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:02:04,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:02:04,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 352 transitions, 7034 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:04,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:04,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:02:04,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:05,488 INFO L130 PetriNetUnfolder]: 1552/2839 cut-off events. [2023-01-27 20:02:05,488 INFO L131 PetriNetUnfolder]: For 40089/40089 co-relation queries the response was YES. [2023-01-27 20:02:05,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20996 conditions, 2839 events. 1552/2839 cut-off events. For 40089/40089 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 17162 event pairs, 114 based on Foata normal form. 2/2841 useless extension candidates. Maximal degree in co-relation 20850. Up to 583 conditions per place. [2023-01-27 20:02:05,512 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 224 selfloop transitions, 272 changer transitions 5/501 dead transitions. [2023-01-27 20:02:05,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 501 transitions, 9435 flow [2023-01-27 20:02:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-27 20:02:05,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-27 20:02:05,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3584 transitions. [2023-01-27 20:02:05,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33621013133208255 [2023-01-27 20:02:05,515 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3584 transitions. [2023-01-27 20:02:05,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3584 transitions. [2023-01-27 20:02:05,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:05,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3584 transitions. [2023-01-27 20:02:05,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 137.84615384615384) internal successors, (3584), 26 states have internal predecessors, (3584), 0 states have call successors, (0), 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 20:02:05,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 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 20:02:05,524 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 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 20:02:05,524 INFO L175 Difference]: Start difference. First operand has 278 places, 352 transitions, 7034 flow. Second operand 26 states and 3584 transitions. [2023-01-27 20:02:05,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 501 transitions, 9435 flow [2023-01-27 20:02:05,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 501 transitions, 9045 flow, removed 20 selfloop flow, removed 17 redundant places. [2023-01-27 20:02:05,653 INFO L231 Difference]: Finished difference. Result has 298 places, 401 transitions, 8347 flow [2023-01-27 20:02:05,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=6682, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8347, PETRI_PLACES=298, PETRI_TRANSITIONS=401} [2023-01-27 20:02:05,654 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 272 predicate places. [2023-01-27 20:02:05,654 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 401 transitions, 8347 flow [2023-01-27 20:02:05,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:05,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:05,654 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:05,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-01-27 20:02:05,654 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:05,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:05,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1176697371, now seen corresponding path program 11 times [2023-01-27 20:02:05,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:05,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355294380] [2023-01-27 20:02:05,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:05,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:06,093 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:06,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:06,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355294380] [2023-01-27 20:02:06,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355294380] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:06,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:06,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:02:06,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220555811] [2023-01-27 20:02:06,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:06,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:02:06,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:06,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:02:06,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:02:06,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:02:06,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 401 transitions, 8347 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:06,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:06,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:02:06,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:07,313 INFO L130 PetriNetUnfolder]: 1612/2952 cut-off events. [2023-01-27 20:02:07,313 INFO L131 PetriNetUnfolder]: For 44066/44066 co-relation queries the response was YES. [2023-01-27 20:02:07,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22745 conditions, 2952 events. 1612/2952 cut-off events. For 44066/44066 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18027 event pairs, 136 based on Foata normal form. 1/2953 useless extension candidates. Maximal degree in co-relation 22591. Up to 735 conditions per place. [2023-01-27 20:02:07,340 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 251 selfloop transitions, 240 changer transitions 2/493 dead transitions. [2023-01-27 20:02:07,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 493 transitions, 10313 flow [2023-01-27 20:02:07,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-27 20:02:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-27 20:02:07,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2618 transitions. [2023-01-27 20:02:07,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33607188703465984 [2023-01-27 20:02:07,342 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2618 transitions. [2023-01-27 20:02:07,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2618 transitions. [2023-01-27 20:02:07,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:07,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2618 transitions. [2023-01-27 20:02:07,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 137.78947368421052) internal successors, (2618), 19 states have internal predecessors, (2618), 0 states have call successors, (0), 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 20:02:07,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 20:02:07,349 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 20:02:07,349 INFO L175 Difference]: Start difference. First operand has 298 places, 401 transitions, 8347 flow. Second operand 19 states and 2618 transitions. [2023-01-27 20:02:07,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 493 transitions, 10313 flow [2023-01-27 20:02:07,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 493 transitions, 9984 flow, removed 24 selfloop flow, removed 9 redundant places. [2023-01-27 20:02:07,522 INFO L231 Difference]: Finished difference. Result has 311 places, 424 transitions, 9155 flow [2023-01-27 20:02:07,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8046, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9155, PETRI_PLACES=311, PETRI_TRANSITIONS=424} [2023-01-27 20:02:07,523 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 285 predicate places. [2023-01-27 20:02:07,523 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 424 transitions, 9155 flow [2023-01-27 20:02:07,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:07,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:07,524 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:07,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-01-27 20:02:07,524 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:07,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:07,524 INFO L85 PathProgramCache]: Analyzing trace with hash 195493989, now seen corresponding path program 12 times [2023-01-27 20:02:07,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:07,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935071426] [2023-01-27 20:02:07,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:07,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:08,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:08,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935071426] [2023-01-27 20:02:08,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935071426] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:08,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:08,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:02:08,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389606609] [2023-01-27 20:02:08,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:08,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:02:08,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:08,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:02:08,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:02:08,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:02:08,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 424 transitions, 9155 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:08,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:08,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:02:08,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:09,208 INFO L130 PetriNetUnfolder]: 1585/2910 cut-off events. [2023-01-27 20:02:09,208 INFO L131 PetriNetUnfolder]: For 46361/46361 co-relation queries the response was YES. [2023-01-27 20:02:09,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22851 conditions, 2910 events. 1585/2910 cut-off events. For 46361/46361 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 17842 event pairs, 190 based on Foata normal form. 14/2924 useless extension candidates. Maximal degree in co-relation 22694. Up to 810 conditions per place. [2023-01-27 20:02:09,239 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 229 selfloop transitions, 251 changer transitions 9/489 dead transitions. [2023-01-27 20:02:09,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 489 transitions, 10419 flow [2023-01-27 20:02:09,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-27 20:02:09,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-27 20:02:09,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3029 transitions. [2023-01-27 20:02:09,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33580931263858094 [2023-01-27 20:02:09,243 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3029 transitions. [2023-01-27 20:02:09,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3029 transitions. [2023-01-27 20:02:09,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:09,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3029 transitions. [2023-01-27 20:02:09,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.6818181818182) internal successors, (3029), 22 states have internal predecessors, (3029), 0 states have call successors, (0), 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 20:02:09,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 20:02:09,252 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 20:02:09,252 INFO L175 Difference]: Start difference. First operand has 311 places, 424 transitions, 9155 flow. Second operand 22 states and 3029 transitions. [2023-01-27 20:02:09,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 489 transitions, 10419 flow [2023-01-27 20:02:09,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 489 transitions, 10170 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-01-27 20:02:09,472 INFO L231 Difference]: Finished difference. Result has 325 places, 416 transitions, 9295 flow [2023-01-27 20:02:09,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8851, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=9295, PETRI_PLACES=325, PETRI_TRANSITIONS=416} [2023-01-27 20:02:09,473 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 299 predicate places. [2023-01-27 20:02:09,473 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 416 transitions, 9295 flow [2023-01-27 20:02:09,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:09,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:09,473 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:09,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-01-27 20:02:09,474 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:09,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:09,474 INFO L85 PathProgramCache]: Analyzing trace with hash -204890007, now seen corresponding path program 13 times [2023-01-27 20:02:09,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:09,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934782785] [2023-01-27 20:02:09,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:09,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:10,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:10,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934782785] [2023-01-27 20:02:10,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934782785] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:10,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:10,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:02:10,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728772944] [2023-01-27 20:02:10,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:10,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:02:10,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:10,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:02:10,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:02:10,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:02:10,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 416 transitions, 9295 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:10,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:10,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:02:10,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:11,070 INFO L130 PetriNetUnfolder]: 1583/2905 cut-off events. [2023-01-27 20:02:11,071 INFO L131 PetriNetUnfolder]: For 48230/48230 co-relation queries the response was YES. [2023-01-27 20:02:11,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23217 conditions, 2905 events. 1583/2905 cut-off events. For 48230/48230 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 17662 event pairs, 115 based on Foata normal form. 3/2908 useless extension candidates. Maximal degree in co-relation 23059. Up to 735 conditions per place. [2023-01-27 20:02:11,103 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 212 selfloop transitions, 270 changer transitions 5/487 dead transitions. [2023-01-27 20:02:11,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 487 transitions, 10805 flow [2023-01-27 20:02:11,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-27 20:02:11,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-27 20:02:11,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3016 transitions. [2023-01-27 20:02:11,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343680709534368 [2023-01-27 20:02:11,105 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3016 transitions. [2023-01-27 20:02:11,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3016 transitions. [2023-01-27 20:02:11,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:11,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3016 transitions. [2023-01-27 20:02:11,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.0909090909091) internal successors, (3016), 22 states have internal predecessors, (3016), 0 states have call successors, (0), 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 20:02:11,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 20:02:11,111 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 20:02:11,111 INFO L175 Difference]: Start difference. First operand has 325 places, 416 transitions, 9295 flow. Second operand 22 states and 3016 transitions. [2023-01-27 20:02:11,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 487 transitions, 10805 flow [2023-01-27 20:02:11,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 487 transitions, 10273 flow, removed 15 selfloop flow, removed 19 redundant places. [2023-01-27 20:02:11,356 INFO L231 Difference]: Finished difference. Result has 327 places, 421 transitions, 9474 flow [2023-01-27 20:02:11,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8789, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=9474, PETRI_PLACES=327, PETRI_TRANSITIONS=421} [2023-01-27 20:02:11,356 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 301 predicate places. [2023-01-27 20:02:11,357 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 421 transitions, 9474 flow [2023-01-27 20:02:11,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:11,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:11,357 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:11,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-01-27 20:02:11,357 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:11,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:11,358 INFO L85 PathProgramCache]: Analyzing trace with hash 314959577, now seen corresponding path program 14 times [2023-01-27 20:02:11,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:11,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520875021] [2023-01-27 20:02:11,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:11,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:11,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:11,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520875021] [2023-01-27 20:02:11,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520875021] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:11,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:11,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:02:11,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638049659] [2023-01-27 20:02:11,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:11,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:02:11,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:11,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:02:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:02:11,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:02:11,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 421 transitions, 9474 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:11,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:11,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:02:11,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:12,697 INFO L130 PetriNetUnfolder]: 1580/2894 cut-off events. [2023-01-27 20:02:12,697 INFO L131 PetriNetUnfolder]: For 47247/47247 co-relation queries the response was YES. [2023-01-27 20:02:12,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23201 conditions, 2894 events. 1580/2894 cut-off events. For 47247/47247 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 17550 event pairs, 212 based on Foata normal form. 3/2897 useless extension candidates. Maximal degree in co-relation 23043. Up to 1103 conditions per place. [2023-01-27 20:02:12,728 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 292 selfloop transitions, 161 changer transitions 13/466 dead transitions. [2023-01-27 20:02:12,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 466 transitions, 10657 flow [2023-01-27 20:02:12,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 20:02:12,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 20:02:12,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1929 transitions. [2023-01-27 20:02:12,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3360627177700348 [2023-01-27 20:02:12,730 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1929 transitions. [2023-01-27 20:02:12,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1929 transitions. [2023-01-27 20:02:12,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:12,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1929 transitions. [2023-01-27 20:02:12,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 137.78571428571428) internal successors, (1929), 14 states have internal predecessors, (1929), 0 states have call successors, (0), 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 20:02:12,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 20:02:12,735 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 20:02:12,736 INFO L175 Difference]: Start difference. First operand has 327 places, 421 transitions, 9474 flow. Second operand 14 states and 1929 transitions. [2023-01-27 20:02:12,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 466 transitions, 10657 flow [2023-01-27 20:02:12,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 466 transitions, 10137 flow, removed 5 selfloop flow, removed 19 redundant places. [2023-01-27 20:02:12,925 INFO L231 Difference]: Finished difference. Result has 324 places, 419 transitions, 9234 flow [2023-01-27 20:02:12,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8962, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9234, PETRI_PLACES=324, PETRI_TRANSITIONS=419} [2023-01-27 20:02:12,926 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 298 predicate places. [2023-01-27 20:02:12,926 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 419 transitions, 9234 flow [2023-01-27 20:02:12,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:12,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:12,927 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:12,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-01-27 20:02:12,927 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:12,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:12,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1133666139, now seen corresponding path program 15 times [2023-01-27 20:02:12,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:12,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689907581] [2023-01-27 20:02:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:12,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:13,717 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-27 20:02:13,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:13,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689907581] [2023-01-27 20:02:13,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689907581] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:02:13,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088736944] [2023-01-27 20:02:13,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:02:13,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:02:13,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:02:13,719 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 20:02:13,722 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 20:02:13,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 20:02:13,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:02:13,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-27 20:02:13,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:02:14,234 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 20:02:14,234 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 26 treesize of output 14 [2023-01-27 20:02:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:14,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:02:14,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088736944] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:14,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:02:14,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 27 [2023-01-27 20:02:14,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46273740] [2023-01-27 20:02:14,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:14,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:02:14,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:14,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:02:14,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2023-01-27 20:02:14,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:02:14,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 419 transitions, 9234 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:14,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:14,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:02:14,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:15,060 INFO L130 PetriNetUnfolder]: 1583/2899 cut-off events. [2023-01-27 20:02:15,060 INFO L131 PetriNetUnfolder]: For 47173/47173 co-relation queries the response was YES. [2023-01-27 20:02:15,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23043 conditions, 2899 events. 1583/2899 cut-off events. For 47173/47173 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 17648 event pairs, 214 based on Foata normal form. 3/2902 useless extension candidates. Maximal degree in co-relation 22883. Up to 1487 conditions per place. [2023-01-27 20:02:15,091 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 311 selfloop transitions, 136 changer transitions 10/457 dead transitions. [2023-01-27 20:02:15,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 457 transitions, 10481 flow [2023-01-27 20:02:15,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 20:02:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 20:02:15,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1649 transitions. [2023-01-27 20:02:15,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33516260162601624 [2023-01-27 20:02:15,093 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1649 transitions. [2023-01-27 20:02:15,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1649 transitions. [2023-01-27 20:02:15,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:15,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1649 transitions. [2023-01-27 20:02:15,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 137.41666666666666) internal successors, (1649), 12 states have internal predecessors, (1649), 0 states have call successors, (0), 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 20:02:15,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:02:15,097 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:02:15,097 INFO L175 Difference]: Start difference. First operand has 324 places, 419 transitions, 9234 flow. Second operand 12 states and 1649 transitions. [2023-01-27 20:02:15,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 457 transitions, 10481 flow [2023-01-27 20:02:15,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 457 transitions, 10139 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-01-27 20:02:15,282 INFO L231 Difference]: Finished difference. Result has 321 places, 422 transitions, 9277 flow [2023-01-27 20:02:15,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8904, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9277, PETRI_PLACES=321, PETRI_TRANSITIONS=422} [2023-01-27 20:02:15,282 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 295 predicate places. [2023-01-27 20:02:15,283 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 422 transitions, 9277 flow [2023-01-27 20:02:15,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:15,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:15,283 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:15,288 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 20:02:15,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-01-27 20:02:15,483 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:15,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:15,484 INFO L85 PathProgramCache]: Analyzing trace with hash -821144427, now seen corresponding path program 16 times [2023-01-27 20:02:15,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:15,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622388756] [2023-01-27 20:02:15,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:15,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:16,031 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:16,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:16,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622388756] [2023-01-27 20:02:16,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622388756] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:16,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:16,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:02:16,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804610330] [2023-01-27 20:02:16,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:16,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:02:16,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:16,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:02:16,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:02:16,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:02:16,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 422 transitions, 9277 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:16,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:16,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:02:16,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:16,938 INFO L130 PetriNetUnfolder]: 1579/2882 cut-off events. [2023-01-27 20:02:16,938 INFO L131 PetriNetUnfolder]: For 47057/47057 co-relation queries the response was YES. [2023-01-27 20:02:16,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22877 conditions, 2882 events. 1579/2882 cut-off events. For 47057/47057 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17435 event pairs, 113 based on Foata normal form. 2/2884 useless extension candidates. Maximal degree in co-relation 22717. Up to 735 conditions per place. [2023-01-27 20:02:16,967 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 247 selfloop transitions, 231 changer transitions 5/483 dead transitions. [2023-01-27 20:02:16,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 483 transitions, 10605 flow [2023-01-27 20:02:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 20:02:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 20:02:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2343 transitions. [2023-01-27 20:02:16,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.336154949784792 [2023-01-27 20:02:16,969 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2343 transitions. [2023-01-27 20:02:16,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2343 transitions. [2023-01-27 20:02:16,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:16,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2343 transitions. [2023-01-27 20:02:16,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.8235294117647) internal successors, (2343), 17 states have internal predecessors, (2343), 0 states have call successors, (0), 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 20:02:16,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 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 20:02:16,973 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 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 20:02:16,974 INFO L175 Difference]: Start difference. First operand has 321 places, 422 transitions, 9277 flow. Second operand 17 states and 2343 transitions. [2023-01-27 20:02:16,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 483 transitions, 10605 flow [2023-01-27 20:02:17,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 483 transitions, 10376 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-01-27 20:02:17,217 INFO L231 Difference]: Finished difference. Result has 328 places, 421 transitions, 9501 flow [2023-01-27 20:02:17,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=9054, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9501, PETRI_PLACES=328, PETRI_TRANSITIONS=421} [2023-01-27 20:02:17,222 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 302 predicate places. [2023-01-27 20:02:17,222 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 421 transitions, 9501 flow [2023-01-27 20:02:17,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:17,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:17,222 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:17,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-01-27 20:02:17,223 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:17,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:17,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1523939993, now seen corresponding path program 17 times [2023-01-27 20:02:17,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:17,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344595054] [2023-01-27 20:02:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:17,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:17,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:17,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344595054] [2023-01-27 20:02:17,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344595054] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:17,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:17,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-27 20:02:17,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951902715] [2023-01-27 20:02:17,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:17,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 20:02:17,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:17,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 20:02:17,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-01-27 20:02:17,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 410 [2023-01-27 20:02:17,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 421 transitions, 9501 flow. Second operand has 14 states, 14 states have (on average 123.5) internal successors, (1729), 14 states have internal predecessors, (1729), 0 states have call successors, (0), 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 20:02:17,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:17,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 410 [2023-01-27 20:02:17,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:19,303 INFO L130 PetriNetUnfolder]: 1650/3011 cut-off events. [2023-01-27 20:02:19,303 INFO L131 PetriNetUnfolder]: For 52243/52243 co-relation queries the response was YES. [2023-01-27 20:02:19,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23982 conditions, 3011 events. 1650/3011 cut-off events. For 52243/52243 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 18530 event pairs, 109 based on Foata normal form. 32/3043 useless extension candidates. Maximal degree in co-relation 23824. Up to 1449 conditions per place. [2023-01-27 20:02:19,333 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 295 selfloop transitions, 232 changer transitions 7/534 dead transitions. [2023-01-27 20:02:19,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 534 transitions, 11945 flow [2023-01-27 20:02:19,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-27 20:02:19,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-27 20:02:19,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2466 transitions. [2023-01-27 20:02:19,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3165596919127086 [2023-01-27 20:02:19,335 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2466 transitions. [2023-01-27 20:02:19,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2466 transitions. [2023-01-27 20:02:19,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:19,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2466 transitions. [2023-01-27 20:02:19,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 129.78947368421052) internal successors, (2466), 19 states have internal predecessors, (2466), 0 states have call successors, (0), 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 20:02:19,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 20:02:19,341 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 20:02:19,341 INFO L175 Difference]: Start difference. First operand has 328 places, 421 transitions, 9501 flow. Second operand 19 states and 2466 transitions. [2023-01-27 20:02:19,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 534 transitions, 11945 flow [2023-01-27 20:02:19,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 534 transitions, 11311 flow, removed 4 selfloop flow, removed 20 redundant places. [2023-01-27 20:02:19,587 INFO L231 Difference]: Finished difference. Result has 332 places, 452 transitions, 10277 flow [2023-01-27 20:02:19,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=8866, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10277, PETRI_PLACES=332, PETRI_TRANSITIONS=452} [2023-01-27 20:02:19,588 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 306 predicate places. [2023-01-27 20:02:19,589 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 452 transitions, 10277 flow [2023-01-27 20:02:19,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 123.5) internal successors, (1729), 14 states have internal predecessors, (1729), 0 states have call successors, (0), 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 20:02:19,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:19,589 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:19,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-01-27 20:02:19,589 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:19,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:19,590 INFO L85 PathProgramCache]: Analyzing trace with hash 2078706087, now seen corresponding path program 18 times [2023-01-27 20:02:19,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:19,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812534453] [2023-01-27 20:02:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:19,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:20,467 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-27 20:02:20,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:20,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812534453] [2023-01-27 20:02:20,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812534453] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:02:20,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240403330] [2023-01-27 20:02:20,468 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:02:20,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:02:20,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:02:20,469 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 20:02:20,482 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 20:02:20,660 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-27 20:02:20,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:02:20,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-27 20:02:20,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:02:20,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:02:20,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:02:20,973 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 20:02:20,973 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 28 treesize of output 33 [2023-01-27 20:02:21,116 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:21,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:02:21,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240403330] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:21,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:02:21,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 26 [2023-01-27 20:02:21,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982493280] [2023-01-27 20:02:21,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:21,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:02:21,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:21,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:02:21,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2023-01-27 20:02:21,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 410 [2023-01-27 20:02:21,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 452 transitions, 10277 flow. Second operand has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 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 20:02:21,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:21,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 410 [2023-01-27 20:02:21,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:22,107 INFO L130 PetriNetUnfolder]: 1764/3177 cut-off events. [2023-01-27 20:02:22,107 INFO L131 PetriNetUnfolder]: For 52025/52025 co-relation queries the response was YES. [2023-01-27 20:02:22,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25471 conditions, 3177 events. 1764/3177 cut-off events. For 52025/52025 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 19356 event pairs, 184 based on Foata normal form. 5/3182 useless extension candidates. Maximal degree in co-relation 25309. Up to 1545 conditions per place. [2023-01-27 20:02:22,144 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 309 selfloop transitions, 186 changer transitions 11/506 dead transitions. [2023-01-27 20:02:22,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 506 transitions, 11736 flow [2023-01-27 20:02:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:02:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:02:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1343 transitions. [2023-01-27 20:02:22,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3275609756097561 [2023-01-27 20:02:22,146 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1343 transitions. [2023-01-27 20:02:22,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1343 transitions. [2023-01-27 20:02:22,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:22,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1343 transitions. [2023-01-27 20:02:22,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.3) internal successors, (1343), 10 states have internal predecessors, (1343), 0 states have call successors, (0), 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 20:02:22,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 20:02:22,149 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 20:02:22,149 INFO L175 Difference]: Start difference. First operand has 332 places, 452 transitions, 10277 flow. Second operand 10 states and 1343 transitions. [2023-01-27 20:02:22,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 506 transitions, 11736 flow [2023-01-27 20:02:22,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 506 transitions, 11372 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-01-27 20:02:22,378 INFO L231 Difference]: Finished difference. Result has 334 places, 456 transitions, 10436 flow [2023-01-27 20:02:22,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=9921, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10436, PETRI_PLACES=334, PETRI_TRANSITIONS=456} [2023-01-27 20:02:22,379 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 308 predicate places. [2023-01-27 20:02:22,379 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 456 transitions, 10436 flow [2023-01-27 20:02:22,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 126.75) internal successors, (1521), 12 states have internal predecessors, (1521), 0 states have call successors, (0), 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 20:02:22,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:22,379 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:22,388 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 20:02:22,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:02:22,586 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:22,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:22,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1296520111, now seen corresponding path program 19 times [2023-01-27 20:02:22,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:22,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290573987] [2023-01-27 20:02:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:22,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:22,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:22,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290573987] [2023-01-27 20:02:22,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290573987] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:22,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:22,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 20:02:22,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016148766] [2023-01-27 20:02:22,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:22,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:02:22,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:22,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:02:22,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:02:22,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:02:22,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 456 transitions, 10436 flow. Second operand has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 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 20:02:22,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:22,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:02:22,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:23,920 INFO L130 PetriNetUnfolder]: 1760/3173 cut-off events. [2023-01-27 20:02:23,921 INFO L131 PetriNetUnfolder]: For 54282/54282 co-relation queries the response was YES. [2023-01-27 20:02:23,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25677 conditions, 3173 events. 1760/3173 cut-off events. For 54282/54282 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19319 event pairs, 124 based on Foata normal form. 1/3174 useless extension candidates. Maximal degree in co-relation 25515. Up to 706 conditions per place. [2023-01-27 20:02:23,955 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 234 selfloop transitions, 307 changer transitions 5/546 dead transitions. [2023-01-27 20:02:23,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 546 transitions, 12286 flow [2023-01-27 20:02:23,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-27 20:02:23,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-27 20:02:23,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2621 transitions. [2023-01-27 20:02:23,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33645699614890884 [2023-01-27 20:02:23,957 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2621 transitions. [2023-01-27 20:02:23,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2621 transitions. [2023-01-27 20:02:23,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:23,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2621 transitions. [2023-01-27 20:02:23,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 137.94736842105263) internal successors, (2621), 19 states have internal predecessors, (2621), 0 states have call successors, (0), 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 20:02:23,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 20:02:23,963 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 20:02:23,963 INFO L175 Difference]: Start difference. First operand has 334 places, 456 transitions, 10436 flow. Second operand 19 states and 2621 transitions. [2023-01-27 20:02:23,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 546 transitions, 12286 flow [2023-01-27 20:02:24,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 546 transitions, 11938 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-01-27 20:02:24,177 INFO L231 Difference]: Finished difference. Result has 345 places, 474 transitions, 11062 flow [2023-01-27 20:02:24,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=10107, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11062, PETRI_PLACES=345, PETRI_TRANSITIONS=474} [2023-01-27 20:02:24,177 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 319 predicate places. [2023-01-27 20:02:24,177 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 474 transitions, 11062 flow [2023-01-27 20:02:24,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 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 20:02:24,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:24,178 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:24,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-01-27 20:02:24,178 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:24,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:24,178 INFO L85 PathProgramCache]: Analyzing trace with hash -305542235, now seen corresponding path program 20 times [2023-01-27 20:02:24,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:24,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459803055] [2023-01-27 20:02:24,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:24,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:24,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:24,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459803055] [2023-01-27 20:02:24,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459803055] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:24,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:24,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-27 20:02:24,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449506509] [2023-01-27 20:02:24,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:24,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 20:02:24,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:24,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 20:02:24,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-01-27 20:02:24,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 410 [2023-01-27 20:02:24,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 474 transitions, 11062 flow. Second operand has 14 states, 14 states have (on average 120.5) internal successors, (1687), 14 states have internal predecessors, (1687), 0 states have call successors, (0), 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 20:02:24,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:24,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 410 [2023-01-27 20:02:24,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:26,220 INFO L130 PetriNetUnfolder]: 1944/3545 cut-off events. [2023-01-27 20:02:26,220 INFO L131 PetriNetUnfolder]: For 63937/63937 co-relation queries the response was YES. [2023-01-27 20:02:26,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28690 conditions, 3545 events. 1944/3545 cut-off events. For 63937/63937 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 22452 event pairs, 170 based on Foata normal form. 5/3550 useless extension candidates. Maximal degree in co-relation 28526. Up to 598 conditions per place. [2023-01-27 20:02:26,257 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 288 selfloop transitions, 369 changer transitions 8/665 dead transitions. [2023-01-27 20:02:26,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 665 transitions, 14359 flow [2023-01-27 20:02:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-27 20:02:26,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-27 20:02:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3315 transitions. [2023-01-27 20:02:26,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31097560975609756 [2023-01-27 20:02:26,260 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3315 transitions. [2023-01-27 20:02:26,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3315 transitions. [2023-01-27 20:02:26,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:26,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3315 transitions. [2023-01-27 20:02:26,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 127.5) internal successors, (3315), 26 states have internal predecessors, (3315), 0 states have call successors, (0), 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 20:02:26,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 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 20:02:26,270 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 410.0) internal successors, (11070), 27 states have internal predecessors, (11070), 0 states have call successors, (0), 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 20:02:26,270 INFO L175 Difference]: Start difference. First operand has 345 places, 474 transitions, 11062 flow. Second operand 26 states and 3315 transitions. [2023-01-27 20:02:26,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 665 transitions, 14359 flow [2023-01-27 20:02:26,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 665 transitions, 13941 flow, removed 57 selfloop flow, removed 8 redundant places. [2023-01-27 20:02:26,567 INFO L231 Difference]: Finished difference. Result has 372 places, 513 transitions, 12575 flow [2023-01-27 20:02:26,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=10746, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=12575, PETRI_PLACES=372, PETRI_TRANSITIONS=513} [2023-01-27 20:02:26,568 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 346 predicate places. [2023-01-27 20:02:26,568 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 513 transitions, 12575 flow [2023-01-27 20:02:26,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 120.5) internal successors, (1687), 14 states have internal predecessors, (1687), 0 states have call successors, (0), 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 20:02:26,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:26,568 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:26,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-01-27 20:02:26,568 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:26,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:26,569 INFO L85 PathProgramCache]: Analyzing trace with hash 830388595, now seen corresponding path program 21 times [2023-01-27 20:02:26,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:26,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640538999] [2023-01-27 20:02:26,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:26,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:27,210 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:27,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:27,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640538999] [2023-01-27 20:02:27,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640538999] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:27,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:27,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-27 20:02:27,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071783193] [2023-01-27 20:02:27,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:27,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 20:02:27,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:27,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 20:02:27,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-01-27 20:02:27,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 410 [2023-01-27 20:02:27,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 513 transitions, 12575 flow. Second operand has 14 states, 14 states have (on average 120.5) internal successors, (1687), 14 states have internal predecessors, (1687), 0 states have call successors, (0), 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 20:02:27,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:27,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 410 [2023-01-27 20:02:27,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:28,593 INFO L130 PetriNetUnfolder]: 1945/3548 cut-off events. [2023-01-27 20:02:28,593 INFO L131 PetriNetUnfolder]: For 69196/69196 co-relation queries the response was YES. [2023-01-27 20:02:28,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30014 conditions, 3548 events. 1945/3548 cut-off events. For 69196/69196 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22491 event pairs, 154 based on Foata normal form. 2/3550 useless extension candidates. Maximal degree in co-relation 29839. Up to 781 conditions per place. [2023-01-27 20:02:28,633 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 243 selfloop transitions, 352 changer transitions 7/602 dead transitions. [2023-01-27 20:02:28,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 602 transitions, 14358 flow [2023-01-27 20:02:28,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-27 20:02:28,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-27 20:02:28,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2778 transitions. [2023-01-27 20:02:28,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3079822616407982 [2023-01-27 20:02:28,635 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2778 transitions. [2023-01-27 20:02:28,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2778 transitions. [2023-01-27 20:02:28,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:28,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2778 transitions. [2023-01-27 20:02:28,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 126.27272727272727) internal successors, (2778), 22 states have internal predecessors, (2778), 0 states have call successors, (0), 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 20:02:28,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 20:02:28,641 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 20:02:28,641 INFO L175 Difference]: Start difference. First operand has 372 places, 513 transitions, 12575 flow. Second operand 22 states and 2778 transitions. [2023-01-27 20:02:28,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 602 transitions, 14358 flow [2023-01-27 20:02:29,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 602 transitions, 13772 flow, removed 87 selfloop flow, removed 13 redundant places. [2023-01-27 20:02:29,057 INFO L231 Difference]: Finished difference. Result has 381 places, 513 transitions, 12805 flow [2023-01-27 20:02:29,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12019, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=12805, PETRI_PLACES=381, PETRI_TRANSITIONS=513} [2023-01-27 20:02:29,057 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2023-01-27 20:02:29,057 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 513 transitions, 12805 flow [2023-01-27 20:02:29,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 120.5) internal successors, (1687), 14 states have internal predecessors, (1687), 0 states have call successors, (0), 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 20:02:29,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:29,058 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:29,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-01-27 20:02:29,058 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:29,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:29,058 INFO L85 PathProgramCache]: Analyzing trace with hash 327894257, now seen corresponding path program 22 times [2023-01-27 20:02:29,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:29,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229492732] [2023-01-27 20:02:29,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:29,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:29,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:29,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229492732] [2023-01-27 20:02:29,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229492732] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:29,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:29,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:02:29,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244580070] [2023-01-27 20:02:29,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:29,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:02:29,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:29,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:02:29,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:02:29,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 410 [2023-01-27 20:02:29,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 513 transitions, 12805 flow. Second operand has 13 states, 13 states have (on average 120.61538461538461) internal successors, (1568), 13 states have internal predecessors, (1568), 0 states have call successors, (0), 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 20:02:29,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:29,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 410 [2023-01-27 20:02:29,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:31,005 INFO L130 PetriNetUnfolder]: 1917/3510 cut-off events. [2023-01-27 20:02:31,005 INFO L131 PetriNetUnfolder]: For 75113/75113 co-relation queries the response was YES. [2023-01-27 20:02:31,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29738 conditions, 3510 events. 1917/3510 cut-off events. For 75113/75113 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22293 event pairs, 252 based on Foata normal form. 14/3524 useless extension candidates. Maximal degree in co-relation 29566. Up to 1344 conditions per place. [2023-01-27 20:02:31,047 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 308 selfloop transitions, 254 changer transitions 9/571 dead transitions. [2023-01-27 20:02:31,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 571 transitions, 14231 flow [2023-01-27 20:02:31,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 20:02:31,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-27 20:02:31,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2271 transitions. [2023-01-27 20:02:31,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30772357723577237 [2023-01-27 20:02:31,049 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2271 transitions. [2023-01-27 20:02:31,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2271 transitions. [2023-01-27 20:02:31,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:31,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2271 transitions. [2023-01-27 20:02:31,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 126.16666666666667) internal successors, (2271), 18 states have internal predecessors, (2271), 0 states have call successors, (0), 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 20:02:31,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 410.0) internal successors, (7790), 19 states have internal predecessors, (7790), 0 states have call successors, (0), 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 20:02:31,054 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 410.0) internal successors, (7790), 19 states have internal predecessors, (7790), 0 states have call successors, (0), 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 20:02:31,054 INFO L175 Difference]: Start difference. First operand has 381 places, 513 transitions, 12805 flow. Second operand 18 states and 2271 transitions. [2023-01-27 20:02:31,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 571 transitions, 14231 flow [2023-01-27 20:02:31,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 571 transitions, 13653 flow, removed 6 selfloop flow, removed 18 redundant places. [2023-01-27 20:02:31,370 INFO L231 Difference]: Finished difference. Result has 381 places, 509 transitions, 12701 flow [2023-01-27 20:02:31,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12168, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=12701, PETRI_PLACES=381, PETRI_TRANSITIONS=509} [2023-01-27 20:02:31,370 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2023-01-27 20:02:31,371 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 509 transitions, 12701 flow [2023-01-27 20:02:31,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 120.61538461538461) internal successors, (1568), 13 states have internal predecessors, (1568), 0 states have call successors, (0), 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 20:02:31,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:31,371 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:31,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-01-27 20:02:31,371 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:31,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:31,372 INFO L85 PathProgramCache]: Analyzing trace with hash 411107351, now seen corresponding path program 23 times [2023-01-27 20:02:31,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:31,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174855924] [2023-01-27 20:02:31,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:31,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:31,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:31,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174855924] [2023-01-27 20:02:31,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174855924] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:31,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:31,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 20:02:31,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424952363] [2023-01-27 20:02:31,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:31,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:02:31,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:31,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:02:31,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:02:31,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 410 [2023-01-27 20:02:31,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 509 transitions, 12701 flow. Second operand has 11 states, 11 states have (on average 134.9090909090909) internal successors, (1484), 11 states have internal predecessors, (1484), 0 states have call successors, (0), 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 20:02:31,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:31,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 410 [2023-01-27 20:02:31,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:32,684 INFO L130 PetriNetUnfolder]: 1908/3478 cut-off events. [2023-01-27 20:02:32,684 INFO L131 PetriNetUnfolder]: For 73883/73883 co-relation queries the response was YES. [2023-01-27 20:02:32,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29632 conditions, 3478 events. 1908/3478 cut-off events. For 73883/73883 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 21827 event pairs, 134 based on Foata normal form. 1/3479 useless extension candidates. Maximal degree in co-relation 29459. Up to 937 conditions per place. [2023-01-27 20:02:32,722 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 247 selfloop transitions, 305 changer transitions 6/558 dead transitions. [2023-01-27 20:02:32,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 558 transitions, 14154 flow [2023-01-27 20:02:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 20:02:32,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 20:02:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1970 transitions. [2023-01-27 20:02:32,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.343205574912892 [2023-01-27 20:02:32,724 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1970 transitions. [2023-01-27 20:02:32,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1970 transitions. [2023-01-27 20:02:32,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:32,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1970 transitions. [2023-01-27 20:02:32,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 140.71428571428572) internal successors, (1970), 14 states have internal predecessors, (1970), 0 states have call successors, (0), 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 20:02:32,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 20:02:32,730 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 20:02:32,730 INFO L175 Difference]: Start difference. First operand has 381 places, 509 transitions, 12701 flow. Second operand 14 states and 1970 transitions. [2023-01-27 20:02:32,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 558 transitions, 14154 flow [2023-01-27 20:02:33,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 558 transitions, 13748 flow, removed 11 selfloop flow, removed 13 redundant places. [2023-01-27 20:02:33,073 INFO L231 Difference]: Finished difference. Result has 381 places, 511 transitions, 13058 flow [2023-01-27 20:02:33,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12301, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=302, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13058, PETRI_PLACES=381, PETRI_TRANSITIONS=511} [2023-01-27 20:02:33,073 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 355 predicate places. [2023-01-27 20:02:33,073 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 511 transitions, 13058 flow [2023-01-27 20:02:33,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 134.9090909090909) internal successors, (1484), 11 states have internal predecessors, (1484), 0 states have call successors, (0), 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 20:02:33,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:33,074 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:33,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-01-27 20:02:33,074 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:33,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:33,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2039877833, now seen corresponding path program 24 times [2023-01-27 20:02:33,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:33,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83683798] [2023-01-27 20:02:33,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:33,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:33,507 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:33,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:33,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83683798] [2023-01-27 20:02:33,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83683798] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:33,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:33,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 20:02:33,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965467891] [2023-01-27 20:02:33,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:33,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:02:33,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:33,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:02:33,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:02:33,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:02:33,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 511 transitions, 13058 flow. Second operand has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 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 20:02:33,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:33,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:02:33,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:34,737 INFO L130 PetriNetUnfolder]: 1910/3484 cut-off events. [2023-01-27 20:02:34,737 INFO L131 PetriNetUnfolder]: For 75641/75641 co-relation queries the response was YES. [2023-01-27 20:02:34,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30108 conditions, 3484 events. 1910/3484 cut-off events. For 75641/75641 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 21909 event pairs, 119 based on Foata normal form. 1/3485 useless extension candidates. Maximal degree in co-relation 29934. Up to 777 conditions per place. [2023-01-27 20:02:34,777 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 247 selfloop transitions, 337 changer transitions 5/589 dead transitions. [2023-01-27 20:02:34,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 589 transitions, 14776 flow [2023-01-27 20:02:34,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-27 20:02:34,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-27 20:02:34,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2630 transitions. [2023-01-27 20:02:34,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337612323491656 [2023-01-27 20:02:34,779 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2630 transitions. [2023-01-27 20:02:34,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2630 transitions. [2023-01-27 20:02:34,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:34,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2630 transitions. [2023-01-27 20:02:34,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 138.42105263157896) internal successors, (2630), 19 states have internal predecessors, (2630), 0 states have call successors, (0), 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 20:02:34,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 20:02:34,784 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 410.0) internal successors, (8200), 20 states have internal predecessors, (8200), 0 states have call successors, (0), 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 20:02:34,784 INFO L175 Difference]: Start difference. First operand has 381 places, 511 transitions, 13058 flow. Second operand 19 states and 2630 transitions. [2023-01-27 20:02:34,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 589 transitions, 14776 flow [2023-01-27 20:02:35,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 589 transitions, 14339 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-01-27 20:02:35,112 INFO L231 Difference]: Finished difference. Result has 392 places, 514 transitions, 13401 flow [2023-01-27 20:02:35,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12632, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=13401, PETRI_PLACES=392, PETRI_TRANSITIONS=514} [2023-01-27 20:02:35,113 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 366 predicate places. [2023-01-27 20:02:35,113 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 514 transitions, 13401 flow [2023-01-27 20:02:35,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 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 20:02:35,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:35,114 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:35,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-01-27 20:02:35,114 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:35,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:35,114 INFO L85 PathProgramCache]: Analyzing trace with hash -197376943, now seen corresponding path program 25 times [2023-01-27 20:02:35,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:35,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670267888] [2023-01-27 20:02:35,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:35,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:35,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:35,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670267888] [2023-01-27 20:02:35,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670267888] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:35,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:35,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:02:35,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840840576] [2023-01-27 20:02:35,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:35,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:02:35,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:35,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:02:35,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:02:35,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 410 [2023-01-27 20:02:35,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 514 transitions, 13401 flow. Second operand has 13 states, 13 states have (on average 127.61538461538461) internal successors, (1659), 13 states have internal predecessors, (1659), 0 states have call successors, (0), 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 20:02:35,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:35,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 410 [2023-01-27 20:02:35,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:36,865 INFO L130 PetriNetUnfolder]: 1909/3477 cut-off events. [2023-01-27 20:02:36,865 INFO L131 PetriNetUnfolder]: For 78157/78157 co-relation queries the response was YES. [2023-01-27 20:02:36,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30636 conditions, 3477 events. 1909/3477 cut-off events. For 78157/78157 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 21812 event pairs, 136 based on Foata normal form. 1/3478 useless extension candidates. Maximal degree in co-relation 30461. Up to 937 conditions per place. [2023-01-27 20:02:36,906 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 233 selfloop transitions, 326 changer transitions 6/565 dead transitions. [2023-01-27 20:02:36,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 565 transitions, 14816 flow [2023-01-27 20:02:36,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 20:02:36,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 20:02:36,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2255 transitions. [2023-01-27 20:02:36,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3235294117647059 [2023-01-27 20:02:36,908 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2255 transitions. [2023-01-27 20:02:36,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2255 transitions. [2023-01-27 20:02:36,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:36,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2255 transitions. [2023-01-27 20:02:36,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 132.64705882352942) internal successors, (2255), 17 states have internal predecessors, (2255), 0 states have call successors, (0), 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 20:02:36,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 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 20:02:36,913 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 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 20:02:36,913 INFO L175 Difference]: Start difference. First operand has 392 places, 514 transitions, 13401 flow. Second operand 17 states and 2255 transitions. [2023-01-27 20:02:36,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 565 transitions, 14816 flow [2023-01-27 20:02:37,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 565 transitions, 14215 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-01-27 20:02:37,235 INFO L231 Difference]: Finished difference. Result has 394 places, 514 transitions, 13487 flow [2023-01-27 20:02:37,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12806, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=13487, PETRI_PLACES=394, PETRI_TRANSITIONS=514} [2023-01-27 20:02:37,236 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 368 predicate places. [2023-01-27 20:02:37,236 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 514 transitions, 13487 flow [2023-01-27 20:02:37,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 127.61538461538461) internal successors, (1659), 13 states have internal predecessors, (1659), 0 states have call successors, (0), 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 20:02:37,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:37,237 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:37,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-01-27 20:02:37,237 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:37,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:37,237 INFO L85 PathProgramCache]: Analyzing trace with hash -896136115, now seen corresponding path program 26 times [2023-01-27 20:02:37,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:37,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472096126] [2023-01-27 20:02:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:37,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:37,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:37,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472096126] [2023-01-27 20:02:37,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472096126] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:37,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:37,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:02:37,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513333049] [2023-01-27 20:02:37,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:37,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:02:37,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:37,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:02:37,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:02:37,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:02:37,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 514 transitions, 13487 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:37,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:37,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:02:37,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:38,998 INFO L130 PetriNetUnfolder]: 1972/3597 cut-off events. [2023-01-27 20:02:38,998 INFO L131 PetriNetUnfolder]: For 77607/77607 co-relation queries the response was YES. [2023-01-27 20:02:39,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31571 conditions, 3597 events. 1972/3597 cut-off events. For 77607/77607 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22759 event pairs, 203 based on Foata normal form. 4/3601 useless extension candidates. Maximal degree in co-relation 31396. Up to 1102 conditions per place. [2023-01-27 20:02:39,040 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 390 selfloop transitions, 221 changer transitions 7/618 dead transitions. [2023-01-27 20:02:39,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 618 transitions, 15610 flow [2023-01-27 20:02:39,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-27 20:02:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-27 20:02:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3028 transitions. [2023-01-27 20:02:39,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33569844789356984 [2023-01-27 20:02:39,043 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3028 transitions. [2023-01-27 20:02:39,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3028 transitions. [2023-01-27 20:02:39,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:39,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3028 transitions. [2023-01-27 20:02:39,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.63636363636363) internal successors, (3028), 22 states have internal predecessors, (3028), 0 states have call successors, (0), 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 20:02:39,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 20:02:39,050 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 410.0) internal successors, (9430), 23 states have internal predecessors, (9430), 0 states have call successors, (0), 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 20:02:39,050 INFO L175 Difference]: Start difference. First operand has 394 places, 514 transitions, 13487 flow. Second operand 22 states and 3028 transitions. [2023-01-27 20:02:39,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 618 transitions, 15610 flow [2023-01-27 20:02:39,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 618 transitions, 14912 flow, removed 5 selfloop flow, removed 15 redundant places. [2023-01-27 20:02:39,370 INFO L231 Difference]: Finished difference. Result has 404 places, 526 transitions, 13670 flow [2023-01-27 20:02:39,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=12821, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=13670, PETRI_PLACES=404, PETRI_TRANSITIONS=526} [2023-01-27 20:02:39,371 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 378 predicate places. [2023-01-27 20:02:39,371 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 526 transitions, 13670 flow [2023-01-27 20:02:39,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:39,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:39,372 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:39,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-01-27 20:02:39,372 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:39,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:39,372 INFO L85 PathProgramCache]: Analyzing trace with hash 424796825, now seen corresponding path program 27 times [2023-01-27 20:02:39,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:39,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007461813] [2023-01-27 20:02:39,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:39,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:39,802 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:39,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:39,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007461813] [2023-01-27 20:02:39,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007461813] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:39,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:39,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:02:39,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903354757] [2023-01-27 20:02:39,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:39,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:02:39,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:39,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:02:39,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:02:39,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:02:39,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 526 transitions, 13670 flow. Second operand has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:39,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:39,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:02:39,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:41,020 INFO L130 PetriNetUnfolder]: 1976/3609 cut-off events. [2023-01-27 20:02:41,021 INFO L131 PetriNetUnfolder]: For 78647/78647 co-relation queries the response was YES. [2023-01-27 20:02:41,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32146 conditions, 3609 events. 1976/3609 cut-off events. For 78647/78647 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22865 event pairs, 179 based on Foata normal form. 1/3610 useless extension candidates. Maximal degree in co-relation 31967. Up to 1195 conditions per place. [2023-01-27 20:02:41,064 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 372 selfloop transitions, 223 changer transitions 5/600 dead transitions. [2023-01-27 20:02:41,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 600 transitions, 15349 flow [2023-01-27 20:02:41,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-27 20:02:41,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-27 20:02:41,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2880 transitions. [2023-01-27 20:02:41,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3344947735191638 [2023-01-27 20:02:41,066 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2880 transitions. [2023-01-27 20:02:41,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2880 transitions. [2023-01-27 20:02:41,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:41,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2880 transitions. [2023-01-27 20:02:41,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.14285714285714) internal successors, (2880), 21 states have internal predecessors, (2880), 0 states have call successors, (0), 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 20:02:41,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 410.0) internal successors, (9020), 22 states have internal predecessors, (9020), 0 states have call successors, (0), 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 20:02:41,072 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 410.0) internal successors, (9020), 22 states have internal predecessors, (9020), 0 states have call successors, (0), 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 20:02:41,072 INFO L175 Difference]: Start difference. First operand has 404 places, 526 transitions, 13670 flow. Second operand 21 states and 2880 transitions. [2023-01-27 20:02:41,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 600 transitions, 15349 flow [2023-01-27 20:02:41,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 600 transitions, 15000 flow, removed 55 selfloop flow, removed 13 redundant places. [2023-01-27 20:02:41,397 INFO L231 Difference]: Finished difference. Result has 412 places, 528 transitions, 13847 flow [2023-01-27 20:02:41,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=13339, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=13847, PETRI_PLACES=412, PETRI_TRANSITIONS=528} [2023-01-27 20:02:41,398 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 386 predicate places. [2023-01-27 20:02:41,398 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 528 transitions, 13847 flow [2023-01-27 20:02:41,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 131.6153846153846) internal successors, (1711), 13 states have internal predecessors, (1711), 0 states have call successors, (0), 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 20:02:41,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:41,398 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:41,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-01-27 20:02:41,399 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:41,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:41,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1572709157, now seen corresponding path program 28 times [2023-01-27 20:02:41,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:41,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630172610] [2023-01-27 20:02:41,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:41,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:41,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:41,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630172610] [2023-01-27 20:02:41,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630172610] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:41,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:41,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 20:02:41,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974819384] [2023-01-27 20:02:41,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:41,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:02:41,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:41,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:02:41,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:02:41,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 410 [2023-01-27 20:02:41,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 528 transitions, 13847 flow. Second operand has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 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 20:02:41,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:41,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 410 [2023-01-27 20:02:41,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:43,175 INFO L130 PetriNetUnfolder]: 1975/3602 cut-off events. [2023-01-27 20:02:43,175 INFO L131 PetriNetUnfolder]: For 78344/78344 co-relation queries the response was YES. [2023-01-27 20:02:43,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32307 conditions, 3602 events. 1975/3602 cut-off events. For 78344/78344 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 22769 event pairs, 40 based on Foata normal form. 1/3603 useless extension candidates. Maximal degree in co-relation 32127. Up to 826 conditions per place. [2023-01-27 20:02:43,217 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 259 selfloop transitions, 371 changer transitions 8/638 dead transitions. [2023-01-27 20:02:43,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 638 transitions, 16254 flow [2023-01-27 20:02:43,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-27 20:02:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-27 20:02:43,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3160 transitions. [2023-01-27 20:02:43,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33510074231177095 [2023-01-27 20:02:43,220 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3160 transitions. [2023-01-27 20:02:43,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3160 transitions. [2023-01-27 20:02:43,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:43,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3160 transitions. [2023-01-27 20:02:43,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 137.3913043478261) internal successors, (3160), 23 states have internal predecessors, (3160), 0 states have call successors, (0), 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 20:02:43,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 410.0) internal successors, (9840), 24 states have internal predecessors, (9840), 0 states have call successors, (0), 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 20:02:43,226 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 410.0) internal successors, (9840), 24 states have internal predecessors, (9840), 0 states have call successors, (0), 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 20:02:43,226 INFO L175 Difference]: Start difference. First operand has 412 places, 528 transitions, 13847 flow. Second operand 23 states and 3160 transitions. [2023-01-27 20:02:43,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 638 transitions, 16254 flow [2023-01-27 20:02:43,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 638 transitions, 15864 flow, removed 4 selfloop flow, removed 17 redundant places. [2023-01-27 20:02:43,562 INFO L231 Difference]: Finished difference. Result has 421 places, 548 transitions, 14866 flow [2023-01-27 20:02:43,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=13488, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=14866, PETRI_PLACES=421, PETRI_TRANSITIONS=548} [2023-01-27 20:02:43,562 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 395 predicate places. [2023-01-27 20:02:43,562 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 548 transitions, 14866 flow [2023-01-27 20:02:43,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 131.75) internal successors, (1581), 12 states have internal predecessors, (1581), 0 states have call successors, (0), 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 20:02:43,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:43,563 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:43,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-01-27 20:02:43,563 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:43,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:43,563 INFO L85 PathProgramCache]: Analyzing trace with hash 273531114, now seen corresponding path program 1 times [2023-01-27 20:02:43,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:43,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693513453] [2023-01-27 20:02:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:43,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:43,605 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:43,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:43,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693513453] [2023-01-27 20:02:43,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693513453] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:02:43,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416717645] [2023-01-27 20:02:43,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:43,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:02:43,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:02:43,606 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 20:02:43,608 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 20:02:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:43,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-27 20:02:43,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:02:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:43,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:02:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:43,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416717645] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:02:43,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:02:43,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-27 20:02:43,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169547000] [2023-01-27 20:02:43,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:02:43,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:02:43,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:43,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:02:43,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:02:43,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 410 [2023-01-27 20:02:43,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 548 transitions, 14866 flow. Second operand has 10 states, 10 states have (on average 174.9) internal successors, (1749), 10 states have internal predecessors, (1749), 0 states have call successors, (0), 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 20:02:43,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:43,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 410 [2023-01-27 20:02:43,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:44,952 INFO L130 PetriNetUnfolder]: 2548/4539 cut-off events. [2023-01-27 20:02:44,952 INFO L131 PetriNetUnfolder]: For 99505/99505 co-relation queries the response was YES. [2023-01-27 20:02:44,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40265 conditions, 4539 events. 2548/4539 cut-off events. For 99505/99505 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 26582 event pairs, 514 based on Foata normal form. 222/4761 useless extension candidates. Maximal degree in co-relation 40079. Up to 1245 conditions per place. [2023-01-27 20:02:45,003 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 674 selfloop transitions, 94 changer transitions 0/768 dead transitions. [2023-01-27 20:02:45,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 768 transitions, 20458 flow [2023-01-27 20:02:45,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:02:45,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:02:45,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1293 transitions. [2023-01-27 20:02:45,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505226480836237 [2023-01-27 20:02:45,004 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1293 transitions. [2023-01-27 20:02:45,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1293 transitions. [2023-01-27 20:02:45,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:45,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1293 transitions. [2023-01-27 20:02:45,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 184.71428571428572) internal successors, (1293), 7 states have internal predecessors, (1293), 0 states have call successors, (0), 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 20:02:45,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 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 20:02:45,007 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 410.0) internal successors, (3280), 8 states have internal predecessors, (3280), 0 states have call successors, (0), 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 20:02:45,007 INFO L175 Difference]: Start difference. First operand has 421 places, 548 transitions, 14866 flow. Second operand 7 states and 1293 transitions. [2023-01-27 20:02:45,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 768 transitions, 20458 flow [2023-01-27 20:02:45,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 768 transitions, 19519 flow, removed 35 selfloop flow, removed 19 redundant places. [2023-01-27 20:02:45,403 INFO L231 Difference]: Finished difference. Result has 411 places, 565 transitions, 14730 flow [2023-01-27 20:02:45,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=14210, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14730, PETRI_PLACES=411, PETRI_TRANSITIONS=565} [2023-01-27 20:02:45,403 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 385 predicate places. [2023-01-27 20:02:45,403 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 565 transitions, 14730 flow [2023-01-27 20:02:45,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 174.9) internal successors, (1749), 10 states have internal predecessors, (1749), 0 states have call successors, (0), 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 20:02:45,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:45,404 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:45,409 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 20:02:45,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:02:45,604 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:45,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:45,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1097738867, now seen corresponding path program 1 times [2023-01-27 20:02:45,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:45,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096690557] [2023-01-27 20:02:45,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:45,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:45,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:45,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096690557] [2023-01-27 20:02:45,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096690557] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:45,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:45,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 20:02:45,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647643019] [2023-01-27 20:02:45,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:45,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:02:45,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:45,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:02:45,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:02:45,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-27 20:02:45,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 565 transitions, 14730 flow. Second operand has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 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 20:02:45,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:45,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-27 20:02:45,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:47,266 INFO L130 PetriNetUnfolder]: 2838/5023 cut-off events. [2023-01-27 20:02:47,266 INFO L131 PetriNetUnfolder]: For 108702/108702 co-relation queries the response was YES. [2023-01-27 20:02:47,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43516 conditions, 5023 events. 2838/5023 cut-off events. For 108702/108702 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 30024 event pairs, 499 based on Foata normal form. 8/5031 useless extension candidates. Maximal degree in co-relation 43333. Up to 2125 conditions per place. [2023-01-27 20:02:47,326 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 353 selfloop transitions, 299 changer transitions 5/657 dead transitions. [2023-01-27 20:02:47,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 657 transitions, 17245 flow [2023-01-27 20:02:47,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 20:02:47,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 20:02:47,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1756 transitions. [2023-01-27 20:02:47,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569105691056911 [2023-01-27 20:02:47,330 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1756 transitions. [2023-01-27 20:02:47,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1756 transitions. [2023-01-27 20:02:47,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:47,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1756 transitions. [2023-01-27 20:02:47,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 146.33333333333334) internal successors, (1756), 12 states have internal predecessors, (1756), 0 states have call successors, (0), 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 20:02:47,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:02:47,335 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:02:47,335 INFO L175 Difference]: Start difference. First operand has 411 places, 565 transitions, 14730 flow. Second operand 12 states and 1756 transitions. [2023-01-27 20:02:47,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 657 transitions, 17245 flow [2023-01-27 20:02:47,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 657 transitions, 17137 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-01-27 20:02:47,807 INFO L231 Difference]: Finished difference. Result has 425 places, 594 transitions, 16252 flow [2023-01-27 20:02:47,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=14602, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16252, PETRI_PLACES=425, PETRI_TRANSITIONS=594} [2023-01-27 20:02:47,808 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 399 predicate places. [2023-01-27 20:02:47,808 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 594 transitions, 16252 flow [2023-01-27 20:02:47,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 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 20:02:47,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:47,809 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:47,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-01-27 20:02:47,809 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:47,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:47,809 INFO L85 PathProgramCache]: Analyzing trace with hash 218436905, now seen corresponding path program 2 times [2023-01-27 20:02:47,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:47,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549548682] [2023-01-27 20:02:47,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:47,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:48,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:48,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549548682] [2023-01-27 20:02:48,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549548682] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:02:48,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172604950] [2023-01-27 20:02:48,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:02:48,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:02:48,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:02:48,066 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 20:02:48,069 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 20:02:48,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:02:48,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:02:48,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:02:48,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:02:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:48,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:02:48,506 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-01-27 20:02:48,507 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 49 [2023-01-27 20:02:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:48,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172604950] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:02:48,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:02:48,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 9] total 18 [2023-01-27 20:02:48,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858991355] [2023-01-27 20:02:48,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:48,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:02:48,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:48,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:02:48,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-01-27 20:02:48,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 410 [2023-01-27 20:02:48,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 594 transitions, 16252 flow. Second operand has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 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 20:02:48,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:48,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 410 [2023-01-27 20:02:48,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:49,856 INFO L130 PetriNetUnfolder]: 2848/5033 cut-off events. [2023-01-27 20:02:49,856 INFO L131 PetriNetUnfolder]: For 118126/118126 co-relation queries the response was YES. [2023-01-27 20:02:49,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45277 conditions, 5033 events. 2848/5033 cut-off events. For 118126/118126 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 29971 event pairs, 618 based on Foata normal form. 8/5041 useless extension candidates. Maximal degree in co-relation 45092. Up to 2903 conditions per place. [2023-01-27 20:02:49,922 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 335 selfloop transitions, 297 changer transitions 0/632 dead transitions. [2023-01-27 20:02:49,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 632 transitions, 17924 flow [2023-01-27 20:02:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:02:49,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:02:49,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1247 transitions. [2023-01-27 20:02:49,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3801829268292683 [2023-01-27 20:02:49,923 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1247 transitions. [2023-01-27 20:02:49,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1247 transitions. [2023-01-27 20:02:49,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:49,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1247 transitions. [2023-01-27 20:02:49,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 155.875) internal successors, (1247), 8 states have internal predecessors, (1247), 0 states have call successors, (0), 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 20:02:49,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 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 20:02:49,926 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 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 20:02:49,926 INFO L175 Difference]: Start difference. First operand has 425 places, 594 transitions, 16252 flow. Second operand 8 states and 1247 transitions. [2023-01-27 20:02:49,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 632 transitions, 17924 flow [2023-01-27 20:02:50,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 632 transitions, 17744 flow, removed 27 selfloop flow, removed 7 redundant places. [2023-01-27 20:02:50,461 INFO L231 Difference]: Finished difference. Result has 424 places, 598 transitions, 16844 flow [2023-01-27 20:02:50,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=16072, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16844, PETRI_PLACES=424, PETRI_TRANSITIONS=598} [2023-01-27 20:02:50,461 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 398 predicate places. [2023-01-27 20:02:50,461 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 598 transitions, 16844 flow [2023-01-27 20:02:50,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 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 20:02:50,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:50,462 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:50,467 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 20:02:50,662 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,SelfDestructingSolverStorable64 [2023-01-27 20:02:50,662 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:50,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:50,663 INFO L85 PathProgramCache]: Analyzing trace with hash -179770209, now seen corresponding path program 3 times [2023-01-27 20:02:50,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:50,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206749619] [2023-01-27 20:02:50,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:50,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:50,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:50,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206749619] [2023-01-27 20:02:50,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206749619] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:02:50,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32266940] [2023-01-27 20:02:50,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:02:50,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:02:50,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:02:50,997 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 20:02:50,999 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 20:02:51,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 20:02:51,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:02:51,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:02:51,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:02:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:51,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:02:51,390 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-01-27 20:02:51,390 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 49 [2023-01-27 20:02:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:51,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32266940] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:02:51,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:02:51,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 9] total 17 [2023-01-27 20:02:51,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166429004] [2023-01-27 20:02:51,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:51,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:02:51,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:51,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:02:51,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-01-27 20:02:51,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 410 [2023-01-27 20:02:51,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 598 transitions, 16844 flow. Second operand has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 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 20:02:51,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:51,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 410 [2023-01-27 20:02:51,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:52,712 INFO L130 PetriNetUnfolder]: 2850/5039 cut-off events. [2023-01-27 20:02:52,712 INFO L131 PetriNetUnfolder]: For 123178/123178 co-relation queries the response was YES. [2023-01-27 20:02:52,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46033 conditions, 5039 events. 2850/5039 cut-off events. For 123178/123178 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 30079 event pairs, 634 based on Foata normal form. 4/5043 useless extension candidates. Maximal degree in co-relation 45844. Up to 2907 conditions per place. [2023-01-27 20:02:52,784 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 322 selfloop transitions, 302 changer transitions 0/624 dead transitions. [2023-01-27 20:02:52,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 624 transitions, 18310 flow [2023-01-27 20:02:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:02:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:02:52,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1239 transitions. [2023-01-27 20:02:52,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3777439024390244 [2023-01-27 20:02:52,786 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1239 transitions. [2023-01-27 20:02:52,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1239 transitions. [2023-01-27 20:02:52,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:52,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1239 transitions. [2023-01-27 20:02:52,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 154.875) internal successors, (1239), 8 states have internal predecessors, (1239), 0 states have call successors, (0), 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 20:02:52,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 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 20:02:52,788 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 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 20:02:52,788 INFO L175 Difference]: Start difference. First operand has 424 places, 598 transitions, 16844 flow. Second operand 8 states and 1239 transitions. [2023-01-27 20:02:52,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 624 transitions, 18310 flow [2023-01-27 20:02:53,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 624 transitions, 17964 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-01-27 20:02:53,353 INFO L231 Difference]: Finished difference. Result has 427 places, 601 transitions, 17243 flow [2023-01-27 20:02:53,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=16500, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17243, PETRI_PLACES=427, PETRI_TRANSITIONS=601} [2023-01-27 20:02:53,354 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 401 predicate places. [2023-01-27 20:02:53,354 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 601 transitions, 17243 flow [2023-01-27 20:02:53,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 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 20:02:53,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:53,354 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:53,360 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 20:02:53,554 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,SelfDestructingSolverStorable65 [2023-01-27 20:02:53,555 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:53,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:53,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1438672969, now seen corresponding path program 4 times [2023-01-27 20:02:53,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:53,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526987627] [2023-01-27 20:02:53,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:53,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:53,836 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:53,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:53,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526987627] [2023-01-27 20:02:53,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526987627] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:02:53,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493748834] [2023-01-27 20:02:53,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:02:53,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:02:53,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:02:53,838 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 20:02:53,840 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 20:02:54,037 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:02:54,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:02:54,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 20:02:54,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:02:54,099 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:02:54,100 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 26 treesize of output 22 [2023-01-27 20:02:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:54,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:02:56,207 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-01-27 20:02:56,207 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 49 [2023-01-27 20:02:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:56,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493748834] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:02:56,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:02:56,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-01-27 20:02:56,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437940014] [2023-01-27 20:02:56,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:02:56,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 20:02:56,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:56,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 20:02:56,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=272, Unknown=1, NotChecked=0, Total=342 [2023-01-27 20:02:56,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-27 20:02:56,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 601 transitions, 17243 flow. Second operand has 19 states, 19 states have (on average 139.26315789473685) internal successors, (2646), 19 states have internal predecessors, (2646), 0 states have call successors, (0), 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 20:02:56,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:56,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-27 20:02:56,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:02:57,727 INFO L130 PetriNetUnfolder]: 2880/5089 cut-off events. [2023-01-27 20:02:57,727 INFO L131 PetriNetUnfolder]: For 129461/129461 co-relation queries the response was YES. [2023-01-27 20:02:57,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47251 conditions, 5089 events. 2880/5089 cut-off events. For 129461/129461 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 30388 event pairs, 639 based on Foata normal form. 8/5097 useless extension candidates. Maximal degree in co-relation 47061. Up to 2915 conditions per place. [2023-01-27 20:02:57,914 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 324 selfloop transitions, 324 changer transitions 0/648 dead transitions. [2023-01-27 20:02:57,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 648 transitions, 19179 flow [2023-01-27 20:02:57,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 20:02:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 20:02:57,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1874 transitions. [2023-01-27 20:02:57,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35159474671669794 [2023-01-27 20:02:57,916 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1874 transitions. [2023-01-27 20:02:57,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1874 transitions. [2023-01-27 20:02:57,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:02:57,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1874 transitions. [2023-01-27 20:02:57,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 144.15384615384616) internal successors, (1874), 13 states have internal predecessors, (1874), 0 states have call successors, (0), 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 20:02:57,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 20:02:57,920 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 20:02:57,920 INFO L175 Difference]: Start difference. First operand has 427 places, 601 transitions, 17243 flow. Second operand 13 states and 1874 transitions. [2023-01-27 20:02:57,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 648 transitions, 19179 flow [2023-01-27 20:02:58,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 648 transitions, 18694 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 20:02:58,451 INFO L231 Difference]: Finished difference. Result has 436 places, 611 transitions, 17779 flow [2023-01-27 20:02:58,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=16768, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17779, PETRI_PLACES=436, PETRI_TRANSITIONS=611} [2023-01-27 20:02:58,452 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 410 predicate places. [2023-01-27 20:02:58,452 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 611 transitions, 17779 flow [2023-01-27 20:02:58,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 139.26315789473685) internal successors, (2646), 19 states have internal predecessors, (2646), 0 states have call successors, (0), 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 20:02:58,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:02:58,452 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:02:58,458 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 20:02:58,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:02:58,654 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:02:58,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:02:58,654 INFO L85 PathProgramCache]: Analyzing trace with hash -699072181, now seen corresponding path program 5 times [2023-01-27 20:02:58,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:02:58,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175701643] [2023-01-27 20:02:58,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:02:58,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:02:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:02:58,955 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:02:58,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:02:58,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175701643] [2023-01-27 20:02:58,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175701643] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:02:58,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:02:58,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 20:02:58,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064450409] [2023-01-27 20:02:58,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:02:58,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:02:58,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:02:58,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:02:58,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:02:58,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-27 20:02:58,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 611 transitions, 17779 flow. Second operand has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 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 20:02:58,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:02:58,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-27 20:02:58,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:03:00,464 INFO L130 PetriNetUnfolder]: 2864/5069 cut-off events. [2023-01-27 20:03:00,464 INFO L131 PetriNetUnfolder]: For 130616/130616 co-relation queries the response was YES. [2023-01-27 20:03:00,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47354 conditions, 5069 events. 2864/5069 cut-off events. For 130616/130616 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 30347 event pairs, 504 based on Foata normal form. 8/5077 useless extension candidates. Maximal degree in co-relation 47162. Up to 2201 conditions per place. [2023-01-27 20:03:00,526 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 281 selfloop transitions, 371 changer transitions 0/652 dead transitions. [2023-01-27 20:03:00,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 652 transitions, 19392 flow [2023-01-27 20:03:00,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 20:03:00,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 20:03:00,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1888 transitions. [2023-01-27 20:03:00,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3542213883677298 [2023-01-27 20:03:00,528 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1888 transitions. [2023-01-27 20:03:00,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1888 transitions. [2023-01-27 20:03:00,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:03:00,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1888 transitions. [2023-01-27 20:03:00,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 145.23076923076923) internal successors, (1888), 13 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 20:03:00,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 20:03:00,531 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 20:03:00,531 INFO L175 Difference]: Start difference. First operand has 436 places, 611 transitions, 17779 flow. Second operand 13 states and 1888 transitions. [2023-01-27 20:03:00,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 652 transitions, 19392 flow [2023-01-27 20:03:01,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 652 transitions, 18771 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-01-27 20:03:01,107 INFO L231 Difference]: Finished difference. Result has 443 places, 613 transitions, 18154 flow [2023-01-27 20:03:01,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=17086, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18154, PETRI_PLACES=443, PETRI_TRANSITIONS=613} [2023-01-27 20:03:01,108 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 417 predicate places. [2023-01-27 20:03:01,108 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 613 transitions, 18154 flow [2023-01-27 20:03:01,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 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 20:03:01,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:03:01,108 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:03:01,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-01-27 20:03:01,108 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:03:01,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:03:01,109 INFO L85 PathProgramCache]: Analyzing trace with hash 333984891, now seen corresponding path program 6 times [2023-01-27 20:03:01,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:03:01,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995001952] [2023-01-27 20:03:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:01,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:03:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:01,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:03:01,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995001952] [2023-01-27 20:03:01,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995001952] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:03:01,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660698272] [2023-01-27 20:03:01,444 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:03:01,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:01,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:03:01,445 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 20:03:01,447 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 20:03:01,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 20:03:01,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:03:01,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:03:01,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:03:01,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-27 20:03:01,753 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:01,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:03:01,814 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-27 20:03:01,814 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 41 treesize of output 57 [2023-01-27 20:03:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:01,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660698272] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:03:01,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:03:01,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 16 [2023-01-27 20:03:01,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268620752] [2023-01-27 20:03:01,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:03:01,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 20:03:01,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:01,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 20:03:01,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-01-27 20:03:01,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-27 20:03:01,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 613 transitions, 18154 flow. Second operand has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 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 20:03:01,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:01,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-27 20:03:01,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:03:03,476 INFO L130 PetriNetUnfolder]: 2885/5106 cut-off events. [2023-01-27 20:03:03,476 INFO L131 PetriNetUnfolder]: For 137626/137626 co-relation queries the response was YES. [2023-01-27 20:03:03,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48441 conditions, 5106 events. 2885/5106 cut-off events. For 137626/137626 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 30549 event pairs, 626 based on Foata normal form. 10/5116 useless extension candidates. Maximal degree in co-relation 48248. Up to 2927 conditions per place. [2023-01-27 20:03:03,542 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 311 selfloop transitions, 347 changer transitions 0/658 dead transitions. [2023-01-27 20:03:03,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 658 transitions, 20119 flow [2023-01-27 20:03:03,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 20:03:03,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 20:03:03,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1879 transitions. [2023-01-27 20:03:03,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3525328330206379 [2023-01-27 20:03:03,544 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1879 transitions. [2023-01-27 20:03:03,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1879 transitions. [2023-01-27 20:03:03,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:03:03,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1879 transitions. [2023-01-27 20:03:03,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 144.53846153846155) internal successors, (1879), 13 states have internal predecessors, (1879), 0 states have call successors, (0), 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 20:03:03,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 20:03:03,548 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 20:03:03,548 INFO L175 Difference]: Start difference. First operand has 443 places, 613 transitions, 18154 flow. Second operand 13 states and 1879 transitions. [2023-01-27 20:03:03,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 658 transitions, 20119 flow [2023-01-27 20:03:04,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 658 transitions, 19460 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-01-27 20:03:04,171 INFO L231 Difference]: Finished difference. Result has 447 places, 621 transitions, 18546 flow [2023-01-27 20:03:04,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=17458, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18546, PETRI_PLACES=447, PETRI_TRANSITIONS=621} [2023-01-27 20:03:04,171 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 421 predicate places. [2023-01-27 20:03:04,171 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 621 transitions, 18546 flow [2023-01-27 20:03:04,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 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 20:03:04,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:03:04,172 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:03:04,177 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 20:03:04,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:04,373 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:03:04,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:03:04,373 INFO L85 PathProgramCache]: Analyzing trace with hash -61596447, now seen corresponding path program 7 times [2023-01-27 20:03:04,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:03:04,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124979556] [2023-01-27 20:03:04,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:04,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:03:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:04,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:03:04,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124979556] [2023-01-27 20:03:04,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124979556] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:03:04,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42974730] [2023-01-27 20:03:04,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 20:03:04,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:04,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:03:04,628 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 20:03:04,630 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 20:03:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:04,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:03:04,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:03:04,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-27 20:03:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:04,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:03:04,989 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-27 20:03:04,989 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 57 [2023-01-27 20:03:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:05,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42974730] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:03:05,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:03:05,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 16 [2023-01-27 20:03:05,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590345881] [2023-01-27 20:03:05,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:03:05,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 20:03:05,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:05,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 20:03:05,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-01-27 20:03:05,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-27 20:03:05,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 621 transitions, 18546 flow. Second operand has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 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 20:03:05,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:05,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-27 20:03:05,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:03:06,681 INFO L130 PetriNetUnfolder]: 2856/5053 cut-off events. [2023-01-27 20:03:06,681 INFO L131 PetriNetUnfolder]: For 135880/135880 co-relation queries the response was YES. [2023-01-27 20:03:06,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48127 conditions, 5053 events. 2856/5053 cut-off events. For 135880/135880 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 30096 event pairs, 593 based on Foata normal form. 10/5063 useless extension candidates. Maximal degree in co-relation 47933. Up to 2927 conditions per place. [2023-01-27 20:03:06,754 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 327 selfloop transitions, 341 changer transitions 0/668 dead transitions. [2023-01-27 20:03:06,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 668 transitions, 20307 flow [2023-01-27 20:03:06,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 20:03:06,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 20:03:06,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2028 transitions. [2023-01-27 20:03:06,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3533101045296167 [2023-01-27 20:03:06,756 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2028 transitions. [2023-01-27 20:03:06,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2028 transitions. [2023-01-27 20:03:06,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:03:06,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2028 transitions. [2023-01-27 20:03:06,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 144.85714285714286) internal successors, (2028), 14 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 20:03:06,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 20:03:06,760 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 410.0) internal successors, (6150), 15 states have internal predecessors, (6150), 0 states have call successors, (0), 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 20:03:06,760 INFO L175 Difference]: Start difference. First operand has 447 places, 621 transitions, 18546 flow. Second operand 14 states and 2028 transitions. [2023-01-27 20:03:06,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 668 transitions, 20307 flow [2023-01-27 20:03:07,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 668 transitions, 19768 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-01-27 20:03:07,465 INFO L231 Difference]: Finished difference. Result has 456 places, 621 transitions, 18763 flow [2023-01-27 20:03:07,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=17934, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=18763, PETRI_PLACES=456, PETRI_TRANSITIONS=621} [2023-01-27 20:03:07,466 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 430 predicate places. [2023-01-27 20:03:07,466 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 621 transitions, 18763 flow [2023-01-27 20:03:07,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 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 20:03:07,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:03:07,467 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:03:07,472 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 20:03:07,667 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,SelfDestructingSolverStorable69 [2023-01-27 20:03:07,667 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:03:07,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:03:07,668 INFO L85 PathProgramCache]: Analyzing trace with hash 294394613, now seen corresponding path program 8 times [2023-01-27 20:03:07,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:03:07,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466845318] [2023-01-27 20:03:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:07,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:03:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:07,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:03:07,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466845318] [2023-01-27 20:03:07,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466845318] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:03:07,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849570529] [2023-01-27 20:03:07,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:03:07,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:07,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:03:07,949 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 20:03:07,951 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 20:03:08,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:03:08,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:03:08,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:03:08,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:03:08,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-27 20:03:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:08,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:03:08,321 INFO L321 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-01-27 20:03:08,321 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 49 [2023-01-27 20:03:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:08,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849570529] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:03:08,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:03:08,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 7] total 16 [2023-01-27 20:03:08,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934245768] [2023-01-27 20:03:08,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:03:08,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 20:03:08,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:08,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 20:03:08,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-01-27 20:03:08,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-27 20:03:08,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 621 transitions, 18763 flow. Second operand has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 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 20:03:08,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:08,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-27 20:03:08,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:03:09,955 INFO L130 PetriNetUnfolder]: 2846/5033 cut-off events. [2023-01-27 20:03:09,955 INFO L131 PetriNetUnfolder]: For 132951/132951 co-relation queries the response was YES. [2023-01-27 20:03:10,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48249 conditions, 5033 events. 2846/5033 cut-off events. For 132951/132951 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 29810 event pairs, 258 based on Foata normal form. 4/5037 useless extension candidates. Maximal degree in co-relation 48051. Up to 1656 conditions per place. [2023-01-27 20:03:10,025 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 307 selfloop transitions, 357 changer transitions 0/664 dead transitions. [2023-01-27 20:03:10,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 664 transitions, 20365 flow [2023-01-27 20:03:10,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 20:03:10,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 20:03:10,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1885 transitions. [2023-01-27 20:03:10,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35365853658536583 [2023-01-27 20:03:10,027 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1885 transitions. [2023-01-27 20:03:10,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1885 transitions. [2023-01-27 20:03:10,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:03:10,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1885 transitions. [2023-01-27 20:03:10,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 145.0) internal successors, (1885), 13 states have internal predecessors, (1885), 0 states have call successors, (0), 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 20:03:10,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 20:03:10,031 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 20:03:10,031 INFO L175 Difference]: Start difference. First operand has 456 places, 621 transitions, 18763 flow. Second operand 13 states and 1885 transitions. [2023-01-27 20:03:10,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 664 transitions, 20365 flow [2023-01-27 20:03:10,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 664 transitions, 19331 flow, removed 13 selfloop flow, removed 13 redundant places. [2023-01-27 20:03:10,666 INFO L231 Difference]: Finished difference. Result has 457 places, 621 transitions, 18455 flow [2023-01-27 20:03:10,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=17695, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18455, PETRI_PLACES=457, PETRI_TRANSITIONS=621} [2023-01-27 20:03:10,667 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 431 predicate places. [2023-01-27 20:03:10,667 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 621 transitions, 18455 flow [2023-01-27 20:03:10,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 139.6875) internal successors, (2235), 16 states have internal predecessors, (2235), 0 states have call successors, (0), 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 20:03:10,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:03:10,667 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:03:10,675 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 20:03:10,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:10,869 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:03:10,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:03:10,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1174875799, now seen corresponding path program 9 times [2023-01-27 20:03:10,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:03:10,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591565691] [2023-01-27 20:03:10,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:10,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:03:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-27 20:03:11,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:03:11,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591565691] [2023-01-27 20:03:11,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591565691] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:03:11,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302211986] [2023-01-27 20:03:11,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:03:11,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:11,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:03:11,649 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 20:03:11,676 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 20:03:11,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 20:03:11,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:03:11,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:03:11,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:03:12,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-01-27 20:03:12,020 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:12,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:03:12,084 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-27 20:03:12,085 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 57 [2023-01-27 20:03:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:12,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302211986] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:03:12,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:03:12,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 7] total 25 [2023-01-27 20:03:12,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063327782] [2023-01-27 20:03:12,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:03:12,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-27 20:03:12,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:12,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-27 20:03:12,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2023-01-27 20:03:12,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 410 [2023-01-27 20:03:12,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 621 transitions, 18455 flow. Second operand has 25 states, 25 states have (on average 114.2) internal successors, (2855), 25 states have internal predecessors, (2855), 0 states have call successors, (0), 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 20:03:12,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:12,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 410 [2023-01-27 20:03:12,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:03:13,961 INFO L130 PetriNetUnfolder]: 2858/5053 cut-off events. [2023-01-27 20:03:13,961 INFO L131 PetriNetUnfolder]: For 136263/136263 co-relation queries the response was YES. [2023-01-27 20:03:14,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48375 conditions, 5053 events. 2858/5053 cut-off events. For 136263/136263 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 29984 event pairs, 488 based on Foata normal form. 4/5057 useless extension candidates. Maximal degree in co-relation 48181. Up to 1656 conditions per place. [2023-01-27 20:03:14,036 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 309 selfloop transitions, 366 changer transitions 0/675 dead transitions. [2023-01-27 20:03:14,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 675 transitions, 20458 flow [2023-01-27 20:03:14,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 20:03:14,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 20:03:14,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1903 transitions. [2023-01-27 20:03:14,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29009146341463415 [2023-01-27 20:03:14,038 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1903 transitions. [2023-01-27 20:03:14,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1903 transitions. [2023-01-27 20:03:14,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:03:14,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1903 transitions. [2023-01-27 20:03:14,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 118.9375) internal successors, (1903), 16 states have internal predecessors, (1903), 0 states have call successors, (0), 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 20:03:14,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 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 20:03:14,042 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 410.0) internal successors, (6970), 17 states have internal predecessors, (6970), 0 states have call successors, (0), 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 20:03:14,042 INFO L175 Difference]: Start difference. First operand has 457 places, 621 transitions, 18455 flow. Second operand 16 states and 1903 transitions. [2023-01-27 20:03:14,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 675 transitions, 20458 flow [2023-01-27 20:03:14,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 675 transitions, 20311 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-01-27 20:03:14,667 INFO L231 Difference]: Finished difference. Result has 467 places, 628 transitions, 19315 flow [2023-01-27 20:03:14,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=18308, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=19315, PETRI_PLACES=467, PETRI_TRANSITIONS=628} [2023-01-27 20:03:14,668 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 441 predicate places. [2023-01-27 20:03:14,668 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 628 transitions, 19315 flow [2023-01-27 20:03:14,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 114.2) internal successors, (2855), 25 states have internal predecessors, (2855), 0 states have call successors, (0), 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 20:03:14,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:03:14,668 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:03:14,677 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 20:03:14,875 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,SelfDestructingSolverStorable71 [2023-01-27 20:03:14,875 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:03:14,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:03:14,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1955066157, now seen corresponding path program 10 times [2023-01-27 20:03:14,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:03:14,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158405024] [2023-01-27 20:03:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:14,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:03:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:15,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:03:15,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158405024] [2023-01-27 20:03:15,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158405024] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:03:15,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869822017] [2023-01-27 20:03:15,212 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:03:15,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:15,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:03:15,213 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 20:03:15,215 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 20:03:15,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:03:15,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:03:15,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 20:03:15,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:03:15,485 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:03:15,486 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 26 treesize of output 22 [2023-01-27 20:03:15,495 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:15,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:03:15,557 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-27 20:03:15,557 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 57 [2023-01-27 20:03:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:15,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869822017] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:03:15,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:03:15,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-01-27 20:03:15,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892197754] [2023-01-27 20:03:15,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:03:15,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 20:03:15,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:15,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 20:03:15,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-01-27 20:03:15,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-27 20:03:15,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 628 transitions, 19315 flow. Second operand has 19 states, 19 states have (on average 139.3684210526316) internal successors, (2648), 19 states have internal predecessors, (2648), 0 states have call successors, (0), 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 20:03:15,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:15,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-27 20:03:15,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:03:17,115 INFO L130 PetriNetUnfolder]: 2864/5063 cut-off events. [2023-01-27 20:03:17,115 INFO L131 PetriNetUnfolder]: For 146806/146806 co-relation queries the response was YES. [2023-01-27 20:03:17,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49480 conditions, 5063 events. 2864/5063 cut-off events. For 146806/146806 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 30083 event pairs, 508 based on Foata normal form. 4/5067 useless extension candidates. Maximal degree in co-relation 49282. Up to 1656 conditions per place. [2023-01-27 20:03:17,186 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 295 selfloop transitions, 366 changer transitions 0/661 dead transitions. [2023-01-27 20:03:17,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 661 transitions, 20951 flow [2023-01-27 20:03:17,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:03:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:03:17,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1459 transitions. [2023-01-27 20:03:17,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35585365853658535 [2023-01-27 20:03:17,188 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1459 transitions. [2023-01-27 20:03:17,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1459 transitions. [2023-01-27 20:03:17,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:03:17,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1459 transitions. [2023-01-27 20:03:17,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 145.9) internal successors, (1459), 10 states have internal predecessors, (1459), 0 states have call successors, (0), 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 20:03:17,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 20:03:17,191 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 20:03:17,191 INFO L175 Difference]: Start difference. First operand has 467 places, 628 transitions, 19315 flow. Second operand 10 states and 1459 transitions. [2023-01-27 20:03:17,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 661 transitions, 20951 flow [2023-01-27 20:03:17,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 661 transitions, 20211 flow, removed 20 selfloop flow, removed 12 redundant places. [2023-01-27 20:03:17,818 INFO L231 Difference]: Finished difference. Result has 466 places, 630 transitions, 19733 flow [2023-01-27 20:03:17,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=18577, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=364, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19733, PETRI_PLACES=466, PETRI_TRANSITIONS=630} [2023-01-27 20:03:17,818 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 440 predicate places. [2023-01-27 20:03:17,818 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 630 transitions, 19733 flow [2023-01-27 20:03:17,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 139.3684210526316) internal successors, (2648), 19 states have internal predecessors, (2648), 0 states have call successors, (0), 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 20:03:17,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:03:17,819 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:03:17,824 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 20:03:18,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:18,019 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:03:18,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:03:18,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2135374965, now seen corresponding path program 11 times [2023-01-27 20:03:18,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:03:18,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49002409] [2023-01-27 20:03:18,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:18,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:03:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:18,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:03:18,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49002409] [2023-01-27 20:03:18,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49002409] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:03:18,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:03:18,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 20:03:18,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317308460] [2023-01-27 20:03:18,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:03:18,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:03:18,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:18,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:03:18,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:03:18,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-27 20:03:18,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 630 transitions, 19733 flow. Second operand has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 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 20:03:18,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:18,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-27 20:03:18,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:03:19,645 INFO L130 PetriNetUnfolder]: 2860/5059 cut-off events. [2023-01-27 20:03:19,645 INFO L131 PetriNetUnfolder]: For 154616/154616 co-relation queries the response was YES. [2023-01-27 20:03:19,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49898 conditions, 5059 events. 2860/5059 cut-off events. For 154616/154616 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 30056 event pairs, 660 based on Foata normal form. 4/5063 useless extension candidates. Maximal degree in co-relation 49705. Up to 2446 conditions per place. [2023-01-27 20:03:19,715 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 415 selfloop transitions, 238 changer transitions 4/657 dead transitions. [2023-01-27 20:03:19,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 657 transitions, 21220 flow [2023-01-27 20:03:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:03:19,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:03:19,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1446 transitions. [2023-01-27 20:03:19,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526829268292683 [2023-01-27 20:03:19,717 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1446 transitions. [2023-01-27 20:03:19,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1446 transitions. [2023-01-27 20:03:19,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:03:19,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1446 transitions. [2023-01-27 20:03:19,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 144.6) internal successors, (1446), 10 states have internal predecessors, (1446), 0 states have call successors, (0), 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 20:03:19,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 20:03:19,720 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 20:03:19,720 INFO L175 Difference]: Start difference. First operand has 466 places, 630 transitions, 19733 flow. Second operand 10 states and 1446 transitions. [2023-01-27 20:03:19,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 657 transitions, 21220 flow [2023-01-27 20:03:20,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 657 transitions, 20634 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-01-27 20:03:20,393 INFO L231 Difference]: Finished difference. Result has 466 places, 628 transitions, 19587 flow [2023-01-27 20:03:20,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=19135, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19587, PETRI_PLACES=466, PETRI_TRANSITIONS=628} [2023-01-27 20:03:20,394 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 440 predicate places. [2023-01-27 20:03:20,394 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 628 transitions, 19587 flow [2023-01-27 20:03:20,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 139.0) internal successors, (1529), 11 states have internal predecessors, (1529), 0 states have call successors, (0), 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 20:03:20,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:03:20,394 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:03:20,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-01-27 20:03:20,395 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:03:20,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:03:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash 721457961, now seen corresponding path program 12 times [2023-01-27 20:03:20,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:03:20,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527941568] [2023-01-27 20:03:20,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:20,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:03:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:20,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:03:20,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527941568] [2023-01-27 20:03:20,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527941568] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:03:20,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732561147] [2023-01-27 20:03:20,659 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:03:20,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:20,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:03:20,660 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 20:03:20,662 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 20:03:20,923 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 20:03:20,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:03:20,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-27 20:03:20,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:03:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:21,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:03:21,084 INFO L321 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-01-27 20:03:21,084 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 57 [2023-01-27 20:03:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:21,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732561147] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:03:21,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:03:21,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 9] total 17 [2023-01-27 20:03:21,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863106320] [2023-01-27 20:03:21,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:03:21,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:03:21,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:21,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:03:21,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-01-27 20:03:21,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 410 [2023-01-27 20:03:21,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 628 transitions, 19587 flow. Second operand has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 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 20:03:21,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:21,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 410 [2023-01-27 20:03:21,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:03:22,443 INFO L130 PetriNetUnfolder]: 2849/5034 cut-off events. [2023-01-27 20:03:22,443 INFO L131 PetriNetUnfolder]: For 153237/153237 co-relation queries the response was YES. [2023-01-27 20:03:22,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49647 conditions, 5034 events. 2849/5034 cut-off events. For 153237/153237 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 29821 event pairs, 506 based on Foata normal form. 4/5038 useless extension candidates. Maximal degree in co-relation 49454. Up to 1656 conditions per place. [2023-01-27 20:03:22,516 INFO L137 encePairwiseOnDemand]: 402/410 looper letters, 292 selfloop transitions, 359 changer transitions 0/651 dead transitions. [2023-01-27 20:03:22,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 651 transitions, 20966 flow [2023-01-27 20:03:22,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:03:22,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:03:22,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1250 transitions. [2023-01-27 20:03:22,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38109756097560976 [2023-01-27 20:03:22,517 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1250 transitions. [2023-01-27 20:03:22,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1250 transitions. [2023-01-27 20:03:22,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:03:22,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1250 transitions. [2023-01-27 20:03:22,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 156.25) internal successors, (1250), 8 states have internal predecessors, (1250), 0 states have call successors, (0), 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 20:03:22,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 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 20:03:22,520 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 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 20:03:22,520 INFO L175 Difference]: Start difference. First operand has 466 places, 628 transitions, 19587 flow. Second operand 8 states and 1250 transitions. [2023-01-27 20:03:22,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 651 transitions, 20966 flow [2023-01-27 20:03:23,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 651 transitions, 20081 flow, removed 8 selfloop flow, removed 23 redundant places. [2023-01-27 20:03:23,217 INFO L231 Difference]: Finished difference. Result has 447 places, 625 transitions, 19339 flow [2023-01-27 20:03:23,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=18621, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19339, PETRI_PLACES=447, PETRI_TRANSITIONS=625} [2023-01-27 20:03:23,217 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 421 predicate places. [2023-01-27 20:03:23,217 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 625 transitions, 19339 flow [2023-01-27 20:03:23,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 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 20:03:23,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:03:23,217 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:03:23,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-01-27 20:03:23,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:23,418 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:03:23,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:03:23,418 INFO L85 PathProgramCache]: Analyzing trace with hash -2023468011, now seen corresponding path program 13 times [2023-01-27 20:03:23,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:03:23,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587494674] [2023-01-27 20:03:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:23,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:03:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:23,738 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:23,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:03:23,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587494674] [2023-01-27 20:03:23,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587494674] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:03:23,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:03:23,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:03:23,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740118852] [2023-01-27 20:03:23,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:03:23,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:03:23,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:23,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:03:23,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:03:23,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 410 [2023-01-27 20:03:23,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 625 transitions, 19339 flow. Second operand has 12 states, 12 states have (on average 134.83333333333334) internal successors, (1618), 12 states have internal predecessors, (1618), 0 states have call successors, (0), 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 20:03:23,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:23,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 410 [2023-01-27 20:03:23,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:03:25,159 INFO L130 PetriNetUnfolder]: 2910/5144 cut-off events. [2023-01-27 20:03:25,159 INFO L131 PetriNetUnfolder]: For 150473/150473 co-relation queries the response was YES. [2023-01-27 20:03:25,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50759 conditions, 5144 events. 2910/5144 cut-off events. For 150473/150473 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 30782 event pairs, 503 based on Foata normal form. 4/5148 useless extension candidates. Maximal degree in co-relation 50580. Up to 2180 conditions per place. [2023-01-27 20:03:25,224 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 337 selfloop transitions, 359 changer transitions 4/700 dead transitions. [2023-01-27 20:03:25,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 700 transitions, 21820 flow [2023-01-27 20:03:25,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 20:03:25,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 20:03:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1699 transitions. [2023-01-27 20:03:25,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34532520325203253 [2023-01-27 20:03:25,225 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1699 transitions. [2023-01-27 20:03:25,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1699 transitions. [2023-01-27 20:03:25,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:03:25,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1699 transitions. [2023-01-27 20:03:25,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.58333333333334) internal successors, (1699), 12 states have internal predecessors, (1699), 0 states have call successors, (0), 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 20:03:25,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:03:25,229 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:03:25,229 INFO L175 Difference]: Start difference. First operand has 447 places, 625 transitions, 19339 flow. Second operand 12 states and 1699 transitions. [2023-01-27 20:03:25,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 700 transitions, 21820 flow [2023-01-27 20:03:25,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 700 transitions, 21232 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 20:03:25,854 INFO L231 Difference]: Finished difference. Result has 456 places, 640 transitions, 20257 flow [2023-01-27 20:03:25,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=18776, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=20257, PETRI_PLACES=456, PETRI_TRANSITIONS=640} [2023-01-27 20:03:25,854 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 430 predicate places. [2023-01-27 20:03:25,854 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 640 transitions, 20257 flow [2023-01-27 20:03:25,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 134.83333333333334) internal successors, (1618), 12 states have internal predecessors, (1618), 0 states have call successors, (0), 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 20:03:25,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:03:25,855 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:03:25,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-01-27 20:03:25,855 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:03:25,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:03:25,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1992329379, now seen corresponding path program 14 times [2023-01-27 20:03:25,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:03:25,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415355763] [2023-01-27 20:03:25,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:25,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:03:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:03:27,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:03:27,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415355763] [2023-01-27 20:03:27,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415355763] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:03:27,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721683051] [2023-01-27 20:03:27,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:03:27,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:27,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:03:27,149 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 20:03:27,165 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 20:03:27,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:03:27,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:03:27,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-27 20:03:27,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:03:27,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:03:27,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:03:27,704 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 20:03:27,704 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 28 treesize of output 33 [2023-01-27 20:03:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:27,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:03:27,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721683051] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:03:27,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:03:27,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 30 [2023-01-27 20:03:27,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899574311] [2023-01-27 20:03:27,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:03:27,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:03:27,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:27,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:03:27,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2023-01-27 20:03:27,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 410 [2023-01-27 20:03:27,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 640 transitions, 20257 flow. Second operand has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 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 20:03:27,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:27,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 410 [2023-01-27 20:03:27,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:03:29,517 INFO L130 PetriNetUnfolder]: 2905/5135 cut-off events. [2023-01-27 20:03:29,517 INFO L131 PetriNetUnfolder]: For 150455/150455 co-relation queries the response was YES. [2023-01-27 20:03:29,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50959 conditions, 5135 events. 2905/5135 cut-off events. For 150455/150455 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 30733 event pairs, 489 based on Foata normal form. 4/5139 useless extension candidates. Maximal degree in co-relation 50846. Up to 2464 conditions per place. [2023-01-27 20:03:29,574 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 288 selfloop transitions, 384 changer transitions 4/676 dead transitions. [2023-01-27 20:03:29,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 676 transitions, 21777 flow [2023-01-27 20:03:29,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:03:29,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:03:29,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1405 transitions. [2023-01-27 20:03:29,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3426829268292683 [2023-01-27 20:03:29,576 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1405 transitions. [2023-01-27 20:03:29,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1405 transitions. [2023-01-27 20:03:29,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:03:29,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1405 transitions. [2023-01-27 20:03:29,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.5) internal successors, (1405), 10 states have internal predecessors, (1405), 0 states have call successors, (0), 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 20:03:29,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 20:03:29,579 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 20:03:29,579 INFO L175 Difference]: Start difference. First operand has 456 places, 640 transitions, 20257 flow. Second operand 10 states and 1405 transitions. [2023-01-27 20:03:29,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 676 transitions, 21777 flow [2023-01-27 20:03:30,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 676 transitions, 21652 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-27 20:03:30,142 INFO L231 Difference]: Finished difference. Result has 460 places, 638 transitions, 20834 flow [2023-01-27 20:03:30,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=20098, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=384, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20834, PETRI_PLACES=460, PETRI_TRANSITIONS=638} [2023-01-27 20:03:30,142 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 434 predicate places. [2023-01-27 20:03:30,142 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 638 transitions, 20834 flow [2023-01-27 20:03:30,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 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 20:03:30,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:03:30,143 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:03:30,149 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 20:03:30,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:30,343 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:03:30,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:03:30,343 INFO L85 PathProgramCache]: Analyzing trace with hash -302565915, now seen corresponding path program 15 times [2023-01-27 20:03:30,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:03:30,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125124405] [2023-01-27 20:03:30,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:30,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:03:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:30,652 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:30,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:03:30,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125124405] [2023-01-27 20:03:30,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125124405] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:03:30,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:03:30,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:03:30,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785843524] [2023-01-27 20:03:30,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:03:30,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:03:30,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:30,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:03:30,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:03:30,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 410 [2023-01-27 20:03:30,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 638 transitions, 20834 flow. Second operand has 12 states, 12 states have (on average 134.83333333333334) internal successors, (1618), 12 states have internal predecessors, (1618), 0 states have call successors, (0), 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 20:03:30,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:30,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 410 [2023-01-27 20:03:30,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:03:32,292 INFO L130 PetriNetUnfolder]: 2910/5140 cut-off events. [2023-01-27 20:03:32,292 INFO L131 PetriNetUnfolder]: For 160652/160652 co-relation queries the response was YES. [2023-01-27 20:03:32,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52254 conditions, 5140 events. 2910/5140 cut-off events. For 160652/160652 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 30727 event pairs, 491 based on Foata normal form. 4/5144 useless extension candidates. Maximal degree in co-relation 52141. Up to 2510 conditions per place. [2023-01-27 20:03:32,349 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 298 selfloop transitions, 395 changer transitions 0/693 dead transitions. [2023-01-27 20:03:32,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 693 transitions, 22784 flow [2023-01-27 20:03:32,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 20:03:32,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 20:03:32,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1693 transitions. [2023-01-27 20:03:32,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3441056910569106 [2023-01-27 20:03:32,350 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1693 transitions. [2023-01-27 20:03:32,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1693 transitions. [2023-01-27 20:03:32,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:03:32,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1693 transitions. [2023-01-27 20:03:32,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.08333333333334) internal successors, (1693), 12 states have internal predecessors, (1693), 0 states have call successors, (0), 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 20:03:32,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:03:32,354 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:03:32,354 INFO L175 Difference]: Start difference. First operand has 460 places, 638 transitions, 20834 flow. Second operand 12 states and 1693 transitions. [2023-01-27 20:03:32,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 693 transitions, 22784 flow [2023-01-27 20:03:32,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 693 transitions, 21717 flow, removed 6 selfloop flow, removed 11 redundant places. [2023-01-27 20:03:32,943 INFO L231 Difference]: Finished difference. Result has 459 places, 640 transitions, 20684 flow [2023-01-27 20:03:32,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=19780, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=393, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=20684, PETRI_PLACES=459, PETRI_TRANSITIONS=640} [2023-01-27 20:03:32,944 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 433 predicate places. [2023-01-27 20:03:32,944 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 640 transitions, 20684 flow [2023-01-27 20:03:32,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 134.83333333333334) internal successors, (1618), 12 states have internal predecessors, (1618), 0 states have call successors, (0), 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 20:03:32,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:03:32,944 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:03:32,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-01-27 20:03:32,945 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:03:32,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:03:32,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2122392975, now seen corresponding path program 16 times [2023-01-27 20:03:32,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:03:32,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127305225] [2023-01-27 20:03:32,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:32,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:03:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:34,125 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:03:34,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:03:34,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127305225] [2023-01-27 20:03:34,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127305225] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:03:34,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60851967] [2023-01-27 20:03:34,125 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:03:34,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:34,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:03:34,126 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 20:03:34,130 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 20:03:34,375 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:03:34,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:03:34,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-27 20:03:34,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:03:34,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:03:34,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:03:34,681 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 20:03:34,681 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 28 treesize of output 33 [2023-01-27 20:03:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:34,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:03:34,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60851967] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:03:34,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:03:34,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 30 [2023-01-27 20:03:34,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843827569] [2023-01-27 20:03:34,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:03:34,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:03:34,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:34,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:03:34,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2023-01-27 20:03:34,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 410 [2023-01-27 20:03:34,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 640 transitions, 20684 flow. Second operand has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 0 states have call successors, (0), 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 20:03:34,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:34,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 410 [2023-01-27 20:03:34,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:03:36,513 INFO L130 PetriNetUnfolder]: 3116/5474 cut-off events. [2023-01-27 20:03:36,514 INFO L131 PetriNetUnfolder]: For 167679/167679 co-relation queries the response was YES. [2023-01-27 20:03:36,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54709 conditions, 5474 events. 3116/5474 cut-off events. For 167679/167679 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 32946 event pairs, 577 based on Foata normal form. 4/5478 useless extension candidates. Maximal degree in co-relation 54595. Up to 1618 conditions per place. [2023-01-27 20:03:36,585 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 293 selfloop transitions, 407 changer transitions 0/700 dead transitions. [2023-01-27 20:03:36,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 700 transitions, 22882 flow [2023-01-27 20:03:36,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:03:36,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:03:36,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1515 transitions. [2023-01-27 20:03:36,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33592017738359203 [2023-01-27 20:03:36,586 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1515 transitions. [2023-01-27 20:03:36,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1515 transitions. [2023-01-27 20:03:36,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:03:36,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1515 transitions. [2023-01-27 20:03:36,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 137.72727272727272) internal successors, (1515), 11 states have internal predecessors, (1515), 0 states have call successors, (0), 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 20:03:36,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 20:03:36,589 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 20:03:36,589 INFO L175 Difference]: Start difference. First operand has 459 places, 640 transitions, 20684 flow. Second operand 11 states and 1515 transitions. [2023-01-27 20:03:36,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 700 transitions, 22882 flow [2023-01-27 20:03:37,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 700 transitions, 21888 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-01-27 20:03:37,304 INFO L231 Difference]: Finished difference. Result has 460 places, 653 transitions, 21026 flow [2023-01-27 20:03:37,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=19726, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21026, PETRI_PLACES=460, PETRI_TRANSITIONS=653} [2023-01-27 20:03:37,304 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 434 predicate places. [2023-01-27 20:03:37,305 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 653 transitions, 21026 flow [2023-01-27 20:03:37,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 0 states have call successors, (0), 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 20:03:37,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:03:37,305 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:03:37,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-01-27 20:03:37,506 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,SelfDestructingSolverStorable78 [2023-01-27 20:03:37,506 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:03:37,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:03:37,506 INFO L85 PathProgramCache]: Analyzing trace with hash 435157801, now seen corresponding path program 17 times [2023-01-27 20:03:37,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:03:37,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293317173] [2023-01-27 20:03:37,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:37,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:03:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:37,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:03:37,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293317173] [2023-01-27 20:03:37,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293317173] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:03:37,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267290758] [2023-01-27 20:03:37,897 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:03:37,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:37,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:03:37,899 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 20:03:37,901 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 20:03:38,212 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-27 20:03:38,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:03:38,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 24 conjunts are in the unsatisfiable core [2023-01-27 20:03:38,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:03:38,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:03:38,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 20:03:38,457 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:38,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:03:38,544 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3807 (Array Int Int)) (~scoreB~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3807))) (let ((.cse0 (select .cse1 ~scoreB~0.base))) (or (< |c_thread1Thread1of1ForFork0_#t~mem3#1| (+ (select .cse0 (+ c_~scoreB~0.offset (* |c_thread1Thread1of1ForFork0_~i~0#1| 4))) 1)) (< (select .cse0 c_~scoreB~0.offset) (select (select .cse1 c_~scoreA~0.base) c_~scoreA~0.offset)))))) is different from false [2023-01-27 20:03:38,584 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:03:38,584 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 115 treesize of output 143 [2023-01-27 20:03:38,601 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:03:38,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 79 [2023-01-27 20:03:39,032 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:39,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267290758] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:03:39,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:03:39,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12, 10] total 27 [2023-01-27 20:03:39,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502907667] [2023-01-27 20:03:39,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:03:39,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:03:39,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:39,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:03:39,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=608, Unknown=1, NotChecked=50, Total=756 [2023-01-27 20:03:39,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 410 [2023-01-27 20:03:39,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 653 transitions, 21026 flow. Second operand has 10 states, 10 states have (on average 138.2) internal successors, (1382), 10 states have internal predecessors, (1382), 0 states have call successors, (0), 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 20:03:39,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:39,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 410 [2023-01-27 20:03:39,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:03:44,674 INFO L130 PetriNetUnfolder]: 3179/5584 cut-off events. [2023-01-27 20:03:44,674 INFO L131 PetriNetUnfolder]: For 179775/179775 co-relation queries the response was YES. [2023-01-27 20:03:44,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56918 conditions, 5584 events. 3179/5584 cut-off events. For 179775/179775 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 33748 event pairs, 700 based on Foata normal form. 2/5586 useless extension candidates. Maximal degree in co-relation 56802. Up to 3304 conditions per place. [2023-01-27 20:03:44,748 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 301 selfloop transitions, 427 changer transitions 0/728 dead transitions. [2023-01-27 20:03:44,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 728 transitions, 24458 flow [2023-01-27 20:03:44,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:03:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:03:44,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1572 transitions. [2023-01-27 20:03:44,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485587583148559 [2023-01-27 20:03:44,750 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1572 transitions. [2023-01-27 20:03:44,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1572 transitions. [2023-01-27 20:03:44,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:03:44,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1572 transitions. [2023-01-27 20:03:44,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 142.9090909090909) internal successors, (1572), 11 states have internal predecessors, (1572), 0 states have call successors, (0), 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 20:03:44,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 20:03:44,753 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 20:03:44,753 INFO L175 Difference]: Start difference. First operand has 460 places, 653 transitions, 21026 flow. Second operand 11 states and 1572 transitions. [2023-01-27 20:03:44,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 728 transitions, 24458 flow [2023-01-27 20:03:45,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 728 transitions, 23818 flow, removed 84 selfloop flow, removed 11 redundant places. [2023-01-27 20:03:45,562 INFO L231 Difference]: Finished difference. Result has 461 places, 705 transitions, 23231 flow [2023-01-27 20:03:45,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=20415, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=375, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23231, PETRI_PLACES=461, PETRI_TRANSITIONS=705} [2023-01-27 20:03:45,563 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 435 predicate places. [2023-01-27 20:03:45,563 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 705 transitions, 23231 flow [2023-01-27 20:03:45,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 138.2) internal successors, (1382), 10 states have internal predecessors, (1382), 0 states have call successors, (0), 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 20:03:45,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:03:45,564 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:03:45,570 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 20:03:45,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-01-27 20:03:45,770 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:03:45,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:03:45,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1693708765, now seen corresponding path program 18 times [2023-01-27 20:03:45,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:03:45,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888656235] [2023-01-27 20:03:45,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:45,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:03:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:46,083 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:46,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:03:46,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888656235] [2023-01-27 20:03:46,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888656235] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:03:46,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56257148] [2023-01-27 20:03:46,083 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:03:46,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:46,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:03:46,085 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 20:03:46,087 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 20:03:46,351 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 20:03:46,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:03:46,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 24 conjunts are in the unsatisfiable core [2023-01-27 20:03:46,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:03:46,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:03:46,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 20:03:46,553 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:03:46,554 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 26 treesize of output 18 [2023-01-27 20:03:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:46,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:03:46,655 WARN L839 $PredicateComparison]: unable to prove that (forall ((~scoreB~0.base Int) (v_ArrVal_3878 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3878))) (let ((.cse0 (select .cse1 ~scoreB~0.base))) (or (< |c_thread1Thread1of1ForFork0_#t~mem3#1| (+ (select .cse0 (+ c_~scoreB~0.offset (* |c_thread1Thread1of1ForFork0_~i~0#1| 4))) 1)) (< (select .cse0 c_~scoreB~0.offset) (select (select .cse1 c_~scoreA~0.base) c_~scoreA~0.offset)))))) is different from false [2023-01-27 20:03:46,694 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:03:46,694 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 115 treesize of output 143 [2023-01-27 20:03:46,717 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:03:46,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 79 [2023-01-27 20:03:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:47,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56257148] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:03:47,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:03:47,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 25 [2023-01-27 20:03:47,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490399240] [2023-01-27 20:03:47,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:03:47,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-27 20:03:47,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:47,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-27 20:03:47,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=510, Unknown=1, NotChecked=46, Total=650 [2023-01-27 20:03:47,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 410 [2023-01-27 20:03:47,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 705 transitions, 23231 flow. Second operand has 26 states, 26 states have (on average 135.0) internal successors, (3510), 26 states have internal predecessors, (3510), 0 states have call successors, (0), 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 20:03:47,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:47,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 410 [2023-01-27 20:03:47,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:03:51,322 INFO L130 PetriNetUnfolder]: 3169/5564 cut-off events. [2023-01-27 20:03:51,323 INFO L131 PetriNetUnfolder]: For 183566/183566 co-relation queries the response was YES. [2023-01-27 20:03:51,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57994 conditions, 5564 events. 3169/5564 cut-off events. For 183566/183566 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 33588 event pairs, 694 based on Foata normal form. 4/5568 useless extension candidates. Maximal degree in co-relation 57881. Up to 3304 conditions per place. [2023-01-27 20:03:51,394 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 294 selfloop transitions, 435 changer transitions 0/729 dead transitions. [2023-01-27 20:03:51,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 729 transitions, 24930 flow [2023-01-27 20:03:51,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 20:03:51,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 20:03:51,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1673 transitions. [2023-01-27 20:03:51,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34004065040650405 [2023-01-27 20:03:51,396 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1673 transitions. [2023-01-27 20:03:51,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1673 transitions. [2023-01-27 20:03:51,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:03:51,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1673 transitions. [2023-01-27 20:03:51,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 139.41666666666666) internal successors, (1673), 12 states have internal predecessors, (1673), 0 states have call successors, (0), 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 20:03:51,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:03:51,399 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:03:51,399 INFO L175 Difference]: Start difference. First operand has 461 places, 705 transitions, 23231 flow. Second operand 12 states and 1673 transitions. [2023-01-27 20:03:51,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 729 transitions, 24930 flow [2023-01-27 20:03:52,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 729 transitions, 24146 flow, removed 1 selfloop flow, removed 13 redundant places. [2023-01-27 20:03:52,079 INFO L231 Difference]: Finished difference. Result has 458 places, 702 transitions, 23272 flow [2023-01-27 20:03:52,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=22402, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=435, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=23272, PETRI_PLACES=458, PETRI_TRANSITIONS=702} [2023-01-27 20:03:52,080 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 432 predicate places. [2023-01-27 20:03:52,080 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 702 transitions, 23272 flow [2023-01-27 20:03:52,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 135.0) internal successors, (3510), 26 states have internal predecessors, (3510), 0 states have call successors, (0), 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 20:03:52,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:03:52,081 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:03:52,086 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 20:03:52,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:52,281 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:03:52,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:03:52,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1697579182, now seen corresponding path program 1 times [2023-01-27 20:03:52,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:03:52,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717345681] [2023-01-27 20:03:52,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:52,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:03:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:52,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:03:52,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717345681] [2023-01-27 20:03:52,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717345681] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:03:52,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555917071] [2023-01-27 20:03:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:03:52,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:03:52,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:03:52,713 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 20:03:52,714 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 20:03:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:03:52,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-27 20:03:52,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:03:53,375 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:53,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:03:53,895 INFO L321 Elim1Store]: treesize reduction 44, result has 81.0 percent of original size [2023-01-27 20:03:53,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 222 [2023-01-27 20:03:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:03:58,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555917071] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:03:58,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:03:58,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 31 [2023-01-27 20:03:58,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813227266] [2023-01-27 20:03:58,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:03:58,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-27 20:03:58,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:03:58,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-27 20:03:58,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2023-01-27 20:03:58,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 410 [2023-01-27 20:03:58,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 702 transitions, 23272 flow. Second operand has 31 states, 31 states have (on average 129.16129032258064) internal successors, (4004), 31 states have internal predecessors, (4004), 0 states have call successors, (0), 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 20:03:58,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:03:58,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 410 [2023-01-27 20:03:58,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:04:02,922 INFO L130 PetriNetUnfolder]: 5860/10410 cut-off events. [2023-01-27 20:04:02,922 INFO L131 PetriNetUnfolder]: For 289307/289307 co-relation queries the response was YES. [2023-01-27 20:04:03,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97523 conditions, 10410 events. 5860/10410 cut-off events. For 289307/289307 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 70397 event pairs, 322 based on Foata normal form. 304/10714 useless extension candidates. Maximal degree in co-relation 97415. Up to 2557 conditions per place. [2023-01-27 20:04:03,311 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 623 selfloop transitions, 585 changer transitions 6/1214 dead transitions. [2023-01-27 20:04:03,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 1214 transitions, 35146 flow [2023-01-27 20:04:03,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-01-27 20:04:03,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-01-27 20:04:03,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 5518 transitions. [2023-01-27 20:04:03,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32825698988697205 [2023-01-27 20:04:03,315 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 5518 transitions. [2023-01-27 20:04:03,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 5518 transitions. [2023-01-27 20:04:03,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:04:03,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 5518 transitions. [2023-01-27 20:04:03,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 134.58536585365854) internal successors, (5518), 41 states have internal predecessors, (5518), 0 states have call successors, (0), 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 20:04:03,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 410.0) internal successors, (17220), 42 states have internal predecessors, (17220), 0 states have call successors, (0), 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 20:04:03,325 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 410.0) internal successors, (17220), 42 states have internal predecessors, (17220), 0 states have call successors, (0), 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 20:04:03,325 INFO L175 Difference]: Start difference. First operand has 458 places, 702 transitions, 23272 flow. Second operand 41 states and 5518 transitions. [2023-01-27 20:04:03,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 1214 transitions, 35146 flow [2023-01-27 20:04:04,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 1214 transitions, 33566 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-01-27 20:04:04,683 INFO L231 Difference]: Finished difference. Result has 506 places, 866 transitions, 27894 flow [2023-01-27 20:04:04,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=21842, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=27894, PETRI_PLACES=506, PETRI_TRANSITIONS=866} [2023-01-27 20:04:04,683 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 480 predicate places. [2023-01-27 20:04:04,684 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 866 transitions, 27894 flow [2023-01-27 20:04:04,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 129.16129032258064) internal successors, (4004), 31 states have internal predecessors, (4004), 0 states have call successors, (0), 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 20:04:04,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:04:04,684 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:04:04,689 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 20:04:04,884 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,SelfDestructingSolverStorable81 [2023-01-27 20:04:04,885 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:04:04,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:04:04,885 INFO L85 PathProgramCache]: Analyzing trace with hash -646389568, now seen corresponding path program 2 times [2023-01-27 20:04:04,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:04:04,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917324893] [2023-01-27 20:04:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:04:04,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:04:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:04:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:04:05,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:04:05,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917324893] [2023-01-27 20:04:05,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917324893] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:04:05,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143316775] [2023-01-27 20:04:05,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:04:05,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:04:05,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:04:05,336 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:04:05,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-01-27 20:04:05,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:04:05,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:04:05,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-27 20:04:05,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:04:05,805 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:04:05,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:04:06,221 INFO L321 Elim1Store]: treesize reduction 44, result has 81.0 percent of original size [2023-01-27 20:04:06,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 222 [2023-01-27 20:04:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:04:08,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143316775] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:04:08,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:04:08,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 22 [2023-01-27 20:04:08,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312551456] [2023-01-27 20:04:08,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:04:08,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-27 20:04:08,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:04:08,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-27 20:04:08,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-01-27 20:04:08,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 410 [2023-01-27 20:04:08,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 866 transitions, 27894 flow. Second operand has 22 states, 22 states have (on average 136.13636363636363) internal successors, (2995), 22 states have internal predecessors, (2995), 0 states have call successors, (0), 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 20:04:08,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:04:08,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 410 [2023-01-27 20:04:08,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:04:14,975 INFO L130 PetriNetUnfolder]: 7368/13503 cut-off events. [2023-01-27 20:04:14,975 INFO L131 PetriNetUnfolder]: For 410816/410816 co-relation queries the response was YES. [2023-01-27 20:04:15,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127799 conditions, 13503 events. 7368/13503 cut-off events. For 410816/410816 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 100584 event pairs, 1753 based on Foata normal form. 230/13733 useless extension candidates. Maximal degree in co-relation 127670. Up to 4835 conditions per place. [2023-01-27 20:04:15,268 INFO L137 encePairwiseOnDemand]: 396/410 looper letters, 685 selfloop transitions, 604 changer transitions 0/1289 dead transitions. [2023-01-27 20:04:15,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1289 transitions, 38885 flow [2023-01-27 20:04:15,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-27 20:04:15,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-27 20:04:15,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3868 transitions. [2023-01-27 20:04:15,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34941282746160796 [2023-01-27 20:04:15,271 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3868 transitions. [2023-01-27 20:04:15,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3868 transitions. [2023-01-27 20:04:15,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:04:15,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3868 transitions. [2023-01-27 20:04:15,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 143.25925925925927) internal successors, (3868), 27 states have internal predecessors, (3868), 0 states have call successors, (0), 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 20:04:15,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 410.0) internal successors, (11480), 28 states have internal predecessors, (11480), 0 states have call successors, (0), 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 20:04:15,278 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 410.0) internal successors, (11480), 28 states have internal predecessors, (11480), 0 states have call successors, (0), 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 20:04:15,278 INFO L175 Difference]: Start difference. First operand has 506 places, 866 transitions, 27894 flow. Second operand 27 states and 3868 transitions. [2023-01-27 20:04:15,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1289 transitions, 38885 flow [2023-01-27 20:04:17,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 1289 transitions, 37369 flow, removed 300 selfloop flow, removed 23 redundant places. [2023-01-27 20:04:17,474 INFO L231 Difference]: Finished difference. Result has 522 places, 1084 transitions, 34957 flow [2023-01-27 20:04:17,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=26462, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=854, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=34957, PETRI_PLACES=522, PETRI_TRANSITIONS=1084} [2023-01-27 20:04:17,475 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 496 predicate places. [2023-01-27 20:04:17,475 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 1084 transitions, 34957 flow [2023-01-27 20:04:17,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 136.13636363636363) internal successors, (2995), 22 states have internal predecessors, (2995), 0 states have call successors, (0), 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 20:04:17,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:04:17,476 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:04:17,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-01-27 20:04:17,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:04:17,676 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:04:17,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:04:17,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1623553708, now seen corresponding path program 3 times [2023-01-27 20:04:17,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:04:17,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636933052] [2023-01-27 20:04:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:04:17,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:04:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:04:18,403 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-27 20:04:18,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:04:18,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636933052] [2023-01-27 20:04:18,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636933052] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:04:18,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158229619] [2023-01-27 20:04:18,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:04:18,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:04:18,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:04:18,405 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:04:18,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-01-27 20:04:18,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 20:04:18,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:04:18,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-27 20:04:18,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:04:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:04:19,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:04:19,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158229619] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:04:19,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:04:19,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 27 [2023-01-27 20:04:19,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816888935] [2023-01-27 20:04:19,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:04:19,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:04:19,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:04:19,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:04:19,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2023-01-27 20:04:19,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-27 20:04:19,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 1084 transitions, 34957 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 20:04:19,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:04:19,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-27 20:04:19,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:04:24,636 INFO L130 PetriNetUnfolder]: 7340/13395 cut-off events. [2023-01-27 20:04:24,636 INFO L131 PetriNetUnfolder]: For 455900/455900 co-relation queries the response was YES. [2023-01-27 20:04:24,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132691 conditions, 13395 events. 7340/13395 cut-off events. For 455900/455900 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 99220 event pairs, 1364 based on Foata normal form. 2/13397 useless extension candidates. Maximal degree in co-relation 132551. Up to 6555 conditions per place. [2023-01-27 20:04:24,976 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 854 selfloop transitions, 263 changer transitions 2/1119 dead transitions. [2023-01-27 20:04:24,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1119 transitions, 37429 flow [2023-01-27 20:04:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 20:04:24,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 20:04:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1636 transitions. [2023-01-27 20:04:24,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33252032520325203 [2023-01-27 20:04:24,978 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1636 transitions. [2023-01-27 20:04:24,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1636 transitions. [2023-01-27 20:04:24,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:04:24,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1636 transitions. [2023-01-27 20:04:24,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.33333333333334) internal successors, (1636), 12 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 20:04:24,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:04:24,981 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:04:24,981 INFO L175 Difference]: Start difference. First operand has 522 places, 1084 transitions, 34957 flow. Second operand 12 states and 1636 transitions. [2023-01-27 20:04:24,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1119 transitions, 37429 flow [2023-01-27 20:04:27,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 1119 transitions, 36571 flow, removed 327 selfloop flow, removed 7 redundant places. [2023-01-27 20:04:27,789 INFO L231 Difference]: Finished difference. Result has 524 places, 1074 transitions, 34311 flow [2023-01-27 20:04:27,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=33813, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1075, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=34311, PETRI_PLACES=524, PETRI_TRANSITIONS=1074} [2023-01-27 20:04:27,790 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 498 predicate places. [2023-01-27 20:04:27,790 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 1074 transitions, 34311 flow [2023-01-27 20:04:27,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 20:04:27,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:04:27,791 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:04:27,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-01-27 20:04:27,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:04:27,991 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:04:27,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:04:27,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1737934884, now seen corresponding path program 4 times [2023-01-27 20:04:27,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:04:27,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758162508] [2023-01-27 20:04:27,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:04:27,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:04:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:04:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:04:28,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:04:28,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758162508] [2023-01-27 20:04:28,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758162508] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:04:28,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169266004] [2023-01-27 20:04:28,453 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:04:28,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:04:28,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:04:28,455 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:04:28,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-01-27 20:04:28,710 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:04:28,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:04:28,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-27 20:04:28,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:04:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:04:28,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:04:29,890 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:04:29,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 294 [2023-01-27 20:07:07,513 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:07:07,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169266004] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:07:07,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:07:07,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-01-27 20:07:07,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140824253] [2023-01-27 20:07:07,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:07:07,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-27 20:07:07,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:07:07,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-27 20:07:07,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2023-01-27 20:07:07,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 410 [2023-01-27 20:07:07,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 1074 transitions, 34311 flow. Second operand has 27 states, 27 states have (on average 129.25925925925927) internal successors, (3490), 27 states have internal predecessors, (3490), 0 states have call successors, (0), 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 20:07:07,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:07:07,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 410 [2023-01-27 20:07:07,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:07:16,830 INFO L130 PetriNetUnfolder]: 8628/16066 cut-off events. [2023-01-27 20:07:16,830 INFO L131 PetriNetUnfolder]: For 503558/503558 co-relation queries the response was YES. [2023-01-27 20:07:17,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152963 conditions, 16066 events. 8628/16066 cut-off events. For 503558/503558 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 126381 event pairs, 1157 based on Foata normal form. 61/16127 useless extension candidates. Maximal degree in co-relation 152824. Up to 5442 conditions per place. [2023-01-27 20:07:17,085 INFO L137 encePairwiseOnDemand]: 394/410 looper letters, 694 selfloop transitions, 788 changer transitions 5/1487 dead transitions. [2023-01-27 20:07:17,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 1487 transitions, 44364 flow [2023-01-27 20:07:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-01-27 20:07:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-01-27 20:07:17,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 7598 transitions. [2023-01-27 20:07:17,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3251176722293539 [2023-01-27 20:07:17,089 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 7598 transitions. [2023-01-27 20:07:17,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 7598 transitions. [2023-01-27 20:07:17,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:07:17,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 7598 transitions. [2023-01-27 20:07:17,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 133.2982456140351) internal successors, (7598), 57 states have internal predecessors, (7598), 0 states have call successors, (0), 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 20:07:17,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 410.0) internal successors, (23780), 58 states have internal predecessors, (23780), 0 states have call successors, (0), 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 20:07:17,103 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 410.0) internal successors, (23780), 58 states have internal predecessors, (23780), 0 states have call successors, (0), 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 20:07:17,103 INFO L175 Difference]: Start difference. First operand has 524 places, 1074 transitions, 34311 flow. Second operand 57 states and 7598 transitions. [2023-01-27 20:07:17,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 1487 transitions, 44364 flow [2023-01-27 20:07:20,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 1487 transitions, 43717 flow, removed 29 selfloop flow, removed 9 redundant places. [2023-01-27 20:07:20,524 INFO L231 Difference]: Finished difference. Result has 586 places, 1236 transitions, 40769 flow [2023-01-27 20:07:20,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=33803, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1074, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=643, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=40769, PETRI_PLACES=586, PETRI_TRANSITIONS=1236} [2023-01-27 20:07:20,525 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 560 predicate places. [2023-01-27 20:07:20,525 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 1236 transitions, 40769 flow [2023-01-27 20:07:20,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 129.25925925925927) internal successors, (3490), 27 states have internal predecessors, (3490), 0 states have call successors, (0), 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 20:07:20,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:07:20,526 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:07:20,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-01-27 20:07:20,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:07:20,732 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:07:20,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:07:20,732 INFO L85 PathProgramCache]: Analyzing trace with hash 108172946, now seen corresponding path program 5 times [2023-01-27 20:07:20,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:07:20,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596438643] [2023-01-27 20:07:20,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:07:20,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:07:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:07:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-27 20:07:21,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:07:21,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596438643] [2023-01-27 20:07:21,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596438643] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:07:21,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882959335] [2023-01-27 20:07:21,483 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:07:21,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:07:21,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:07:21,486 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:07:21,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-01-27 20:07:21,767 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-27 20:07:21,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:07:21,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-27 20:07:21,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:07:22,104 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 20:07:22,104 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 26 treesize of output 14 [2023-01-27 20:07:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:07:22,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:07:22,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882959335] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:07:22,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:07:22,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [18] total 28 [2023-01-27 20:07:22,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104901425] [2023-01-27 20:07:22,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:07:22,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:07:22,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:07:22,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:07:22,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2023-01-27 20:07:22,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-27 20:07:22,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 1236 transitions, 40769 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 20:07:22,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:07:22,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-27 20:07:22,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:07:29,857 INFO L130 PetriNetUnfolder]: 8611/16026 cut-off events. [2023-01-27 20:07:29,858 INFO L131 PetriNetUnfolder]: For 562182/562182 co-relation queries the response was YES. [2023-01-27 20:07:30,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159836 conditions, 16026 events. 8611/16026 cut-off events. For 562182/562182 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 125662 event pairs, 1745 based on Foata normal form. 2/16028 useless extension candidates. Maximal degree in co-relation 159680. Up to 8088 conditions per place. [2023-01-27 20:07:30,211 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 997 selfloop transitions, 264 changer transitions 4/1265 dead transitions. [2023-01-27 20:07:30,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 1265 transitions, 43501 flow [2023-01-27 20:07:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:07:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:07:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1492 transitions. [2023-01-27 20:07:30,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33082039911308203 [2023-01-27 20:07:30,213 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1492 transitions. [2023-01-27 20:07:30,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1492 transitions. [2023-01-27 20:07:30,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:07:30,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1492 transitions. [2023-01-27 20:07:30,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 135.63636363636363) internal successors, (1492), 11 states have internal predecessors, (1492), 0 states have call successors, (0), 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 20:07:30,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 20:07:30,216 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 20:07:30,216 INFO L175 Difference]: Start difference. First operand has 586 places, 1236 transitions, 40769 flow. Second operand 11 states and 1492 transitions. [2023-01-27 20:07:30,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 1265 transitions, 43501 flow [2023-01-27 20:07:34,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 1265 transitions, 42610 flow, removed 200 selfloop flow, removed 22 redundant places. [2023-01-27 20:07:34,788 INFO L231 Difference]: Finished difference. Result has 572 places, 1231 transitions, 40185 flow [2023-01-27 20:07:34,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=39719, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=969, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=40185, PETRI_PLACES=572, PETRI_TRANSITIONS=1231} [2023-01-27 20:07:34,789 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 546 predicate places. [2023-01-27 20:07:34,789 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 1231 transitions, 40185 flow [2023-01-27 20:07:34,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 20:07:34,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:07:34,789 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:07:34,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-01-27 20:07:34,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:07:34,990 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:07:34,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:07:34,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2048500918, now seen corresponding path program 6 times [2023-01-27 20:07:34,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:07:34,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148251253] [2023-01-27 20:07:34,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:07:34,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:07:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:07:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-27 20:07:35,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:07:35,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148251253] [2023-01-27 20:07:35,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148251253] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:07:35,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475888090] [2023-01-27 20:07:35,678 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:07:35,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:07:35,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:07:35,679 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:07:35,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-01-27 20:07:35,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 20:07:35,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:07:35,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-27 20:07:35,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:07:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:07:36,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:07:36,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475888090] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:07:36,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:07:36,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 27 [2023-01-27 20:07:36,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938939427] [2023-01-27 20:07:36,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:07:36,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:07:36,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:07:36,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:07:36,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2023-01-27 20:07:36,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-27 20:07:36,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 1231 transitions, 40185 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 20:07:36,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:07:36,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-27 20:07:36,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:07:43,469 INFO L130 PetriNetUnfolder]: 8581/15912 cut-off events. [2023-01-27 20:07:43,470 INFO L131 PetriNetUnfolder]: For 571878/571878 co-relation queries the response was YES. [2023-01-27 20:07:43,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158818 conditions, 15912 events. 8581/15912 cut-off events. For 571878/571878 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 124171 event pairs, 1743 based on Foata normal form. 2/15914 useless extension candidates. Maximal degree in co-relation 158663. Up to 8076 conditions per place. [2023-01-27 20:07:43,721 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 991 selfloop transitions, 268 changer transitions 2/1261 dead transitions. [2023-01-27 20:07:43,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 1261 transitions, 42891 flow [2023-01-27 20:07:43,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 20:07:43,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 20:07:43,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1628 transitions. [2023-01-27 20:07:43,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3308943089430894 [2023-01-27 20:07:43,723 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1628 transitions. [2023-01-27 20:07:43,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1628 transitions. [2023-01-27 20:07:43,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:07:43,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1628 transitions. [2023-01-27 20:07:43,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 135.66666666666666) internal successors, (1628), 12 states have internal predecessors, (1628), 0 states have call successors, (0), 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 20:07:43,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:07:43,727 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:07:43,727 INFO L175 Difference]: Start difference. First operand has 572 places, 1231 transitions, 40185 flow. Second operand 12 states and 1628 transitions. [2023-01-27 20:07:43,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 1261 transitions, 42891 flow [2023-01-27 20:07:48,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 1261 transitions, 42302 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-01-27 20:07:48,036 INFO L231 Difference]: Finished difference. Result has 566 places, 1224 transitions, 39885 flow [2023-01-27 20:07:48,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=39381, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=957, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=39885, PETRI_PLACES=566, PETRI_TRANSITIONS=1224} [2023-01-27 20:07:48,037 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 540 predicate places. [2023-01-27 20:07:48,037 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 1224 transitions, 39885 flow [2023-01-27 20:07:48,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 20:07:48,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:07:48,038 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:07:48,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-01-27 20:07:48,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2023-01-27 20:07:48,238 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:07:48,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:07:48,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1314119378, now seen corresponding path program 7 times [2023-01-27 20:07:48,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:07:48,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595841764] [2023-01-27 20:07:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:07:48,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:07:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:07:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:07:49,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:07:49,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595841764] [2023-01-27 20:07:49,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595841764] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:07:49,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603949332] [2023-01-27 20:07:49,515 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 20:07:49,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:07:49,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:07:49,516 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:07:49,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-01-27 20:07:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:07:49,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-27 20:07:49,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:07:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:07:50,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:07:50,748 INFO L321 Elim1Store]: treesize reduction 44, result has 81.0 percent of original size [2023-01-27 20:07:50,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 222 [2023-01-27 20:07:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:07:56,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603949332] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:07:56,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:07:56,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11, 9] total 40 [2023-01-27 20:07:56,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669360424] [2023-01-27 20:07:56,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:07:56,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-01-27 20:07:56,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:07:56,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-01-27 20:07:56,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1370, Unknown=0, NotChecked=0, Total=1560 [2023-01-27 20:07:56,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 410 [2023-01-27 20:07:56,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 1224 transitions, 39885 flow. Second operand has 40 states, 40 states have (on average 103.7) internal successors, (4148), 40 states have internal predecessors, (4148), 0 states have call successors, (0), 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 20:07:56,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:07:56,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 410 [2023-01-27 20:07:56,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:08:15,160 INFO L130 PetriNetUnfolder]: 17535/32591 cut-off events. [2023-01-27 20:08:15,160 INFO L131 PetriNetUnfolder]: For 1155863/1155863 co-relation queries the response was YES. [2023-01-27 20:08:15,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322804 conditions, 32591 events. 17535/32591 cut-off events. For 1155863/1155863 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 285719 event pairs, 2400 based on Foata normal form. 132/32723 useless extension candidates. Maximal degree in co-relation 322652. Up to 7529 conditions per place. [2023-01-27 20:08:15,871 INFO L137 encePairwiseOnDemand]: 392/410 looper letters, 1343 selfloop transitions, 1432 changer transitions 0/2775 dead transitions. [2023-01-27 20:08:15,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 2775 transitions, 89448 flow [2023-01-27 20:08:15,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-01-27 20:08:15,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-01-27 20:08:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 6867 transitions. [2023-01-27 20:08:15,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2658536585365854 [2023-01-27 20:08:15,875 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 6867 transitions. [2023-01-27 20:08:15,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 6867 transitions. [2023-01-27 20:08:15,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:08:15,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 6867 transitions. [2023-01-27 20:08:15,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 109.0) internal successors, (6867), 63 states have internal predecessors, (6867), 0 states have call successors, (0), 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 20:08:15,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 410.0) internal successors, (26240), 64 states have internal predecessors, (26240), 0 states have call successors, (0), 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 20:08:15,890 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 410.0) internal successors, (26240), 64 states have internal predecessors, (26240), 0 states have call successors, (0), 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 20:08:15,890 INFO L175 Difference]: Start difference. First operand has 566 places, 1224 transitions, 39885 flow. Second operand 63 states and 6867 transitions. [2023-01-27 20:08:15,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 2775 transitions, 89448 flow [2023-01-27 20:08:31,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 2775 transitions, 87744 flow, removed 8 selfloop flow, removed 14 redundant places. [2023-01-27 20:08:31,274 INFO L231 Difference]: Finished difference. Result has 618 places, 1964 transitions, 66905 flow [2023-01-27 20:08:31,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=38716, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=683, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=66905, PETRI_PLACES=618, PETRI_TRANSITIONS=1964} [2023-01-27 20:08:31,275 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 592 predicate places. [2023-01-27 20:08:31,275 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 1964 transitions, 66905 flow [2023-01-27 20:08:31,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 103.7) internal successors, (4148), 40 states have internal predecessors, (4148), 0 states have call successors, (0), 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 20:08:31,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:08:31,276 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:08:31,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-01-27 20:08:31,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2023-01-27 20:08:31,476 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:08:31,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:08:31,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2121312068, now seen corresponding path program 8 times [2023-01-27 20:08:31,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:08:31,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976611035] [2023-01-27 20:08:31,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:08:31,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:08:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:08:32,211 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-27 20:08:32,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:08:32,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976611035] [2023-01-27 20:08:32,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976611035] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:08:32,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859231848] [2023-01-27 20:08:32,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:08:32,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:08:32,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:08:32,213 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:08:32,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-01-27 20:08:32,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:08:32,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:08:32,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-27 20:08:32,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:08:32,875 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:08:32,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:08:32,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859231848] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:08:32,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:08:32,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 27 [2023-01-27 20:08:32,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527698201] [2023-01-27 20:08:32,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:08:32,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:08:32,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:08:32,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:08:32,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2023-01-27 20:08:32,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-27 20:08:32,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 1964 transitions, 66905 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 20:08:32,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:08:32,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-27 20:08:32,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:08:50,719 INFO L130 PetriNetUnfolder]: 17519/32559 cut-off events. [2023-01-27 20:08:50,719 INFO L131 PetriNetUnfolder]: For 1171995/1171995 co-relation queries the response was YES. [2023-01-27 20:08:51,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328746 conditions, 32559 events. 17519/32559 cut-off events. For 1171995/1171995 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 285267 event pairs, 3604 based on Foata normal form. 4/32563 useless extension candidates. Maximal degree in co-relation 328592. Up to 16643 conditions per place. [2023-01-27 20:08:51,450 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 1435 selfloop transitions, 558 changer transitions 3/1996 dead transitions. [2023-01-27 20:08:51,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 1996 transitions, 71085 flow [2023-01-27 20:08:51,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 20:08:51,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 20:08:51,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1758 transitions. [2023-01-27 20:08:51,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298311444652908 [2023-01-27 20:08:51,452 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1758 transitions. [2023-01-27 20:08:51,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1758 transitions. [2023-01-27 20:08:51,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:08:51,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1758 transitions. [2023-01-27 20:08:51,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 135.23076923076923) internal successors, (1758), 13 states have internal predecessors, (1758), 0 states have call successors, (0), 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 20:08:51,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 20:08:51,456 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 410.0) internal successors, (5740), 14 states have internal predecessors, (5740), 0 states have call successors, (0), 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 20:08:51,456 INFO L175 Difference]: Start difference. First operand has 618 places, 1964 transitions, 66905 flow. Second operand 13 states and 1758 transitions. [2023-01-27 20:08:51,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 1996 transitions, 71085 flow [2023-01-27 20:09:05,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 1996 transitions, 70431 flow, removed 52 selfloop flow, removed 20 redundant places. [2023-01-27 20:09:05,827 INFO L231 Difference]: Finished difference. Result has 610 places, 1958 transitions, 67115 flow [2023-01-27 20:09:05,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=66057, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=558, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=67115, PETRI_PLACES=610, PETRI_TRANSITIONS=1958} [2023-01-27 20:09:05,828 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 584 predicate places. [2023-01-27 20:09:05,828 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 1958 transitions, 67115 flow [2023-01-27 20:09:05,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 20:09:05,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:09:05,828 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:09:05,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-01-27 20:09:06,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2023-01-27 20:09:06,029 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:09:06,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:09:06,029 INFO L85 PathProgramCache]: Analyzing trace with hash -16981364, now seen corresponding path program 9 times [2023-01-27 20:09:06,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:09:06,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697899720] [2023-01-27 20:09:06,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:09:06,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:09:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:09:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:09:06,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:09:06,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697899720] [2023-01-27 20:09:06,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697899720] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:09:06,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:09:06,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:09:06,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809946730] [2023-01-27 20:09:06,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:09:06,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:09:06,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:09:06,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:09:06,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:09:06,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 410 [2023-01-27 20:09:06,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 1958 transitions, 67115 flow. Second operand has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 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 20:09:06,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:09:06,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 410 [2023-01-27 20:09:06,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:09:25,102 INFO L130 PetriNetUnfolder]: 17461/32337 cut-off events. [2023-01-27 20:09:25,102 INFO L131 PetriNetUnfolder]: For 1210221/1210221 co-relation queries the response was YES. [2023-01-27 20:09:26,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331100 conditions, 32337 events. 17461/32337 cut-off events. For 1210221/1210221 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 281993 event pairs, 7734 based on Foata normal form. 4/32341 useless extension candidates. Maximal degree in co-relation 330949. Up to 30373 conditions per place. [2023-01-27 20:09:26,303 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 1602 selfloop transitions, 359 changer transitions 8/1969 dead transitions. [2023-01-27 20:09:26,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 1969 transitions, 70934 flow [2023-01-27 20:09:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 20:09:26,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 20:09:26,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1681 transitions. [2023-01-27 20:09:26,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2023-01-27 20:09:26,306 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1681 transitions. [2023-01-27 20:09:26,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1681 transitions. [2023-01-27 20:09:26,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:09:26,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1681 transitions. [2023-01-27 20:09:26,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 140.08333333333334) internal successors, (1681), 12 states have internal predecessors, (1681), 0 states have call successors, (0), 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 20:09:26,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:09:26,311 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 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 20:09:26,311 INFO L175 Difference]: Start difference. First operand has 610 places, 1958 transitions, 67115 flow. Second operand 12 states and 1681 transitions. [2023-01-27 20:09:26,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 1969 transitions, 70934 flow [2023-01-27 20:09:40,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 1969 transitions, 69603 flow, removed 4 selfloop flow, removed 11 redundant places. [2023-01-27 20:09:40,896 INFO L231 Difference]: Finished difference. Result has 604 places, 1941 transitions, 65915 flow [2023-01-27 20:09:40,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=65401, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1947, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=65915, PETRI_PLACES=604, PETRI_TRANSITIONS=1941} [2023-01-27 20:09:40,897 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 578 predicate places. [2023-01-27 20:09:40,897 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 1941 transitions, 65915 flow [2023-01-27 20:09:40,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 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 20:09:40,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:09:40,897 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:09:40,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2023-01-27 20:09:40,898 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:09:40,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:09:40,898 INFO L85 PathProgramCache]: Analyzing trace with hash -259348282, now seen corresponding path program 10 times [2023-01-27 20:09:40,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:09:40,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188988516] [2023-01-27 20:09:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:09:40,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:09:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:09:41,274 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:09:41,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:09:41,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188988516] [2023-01-27 20:09:41,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188988516] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:09:41,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:09:41,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:09:41,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343851760] [2023-01-27 20:09:41,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:09:41,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:09:41,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:09:41,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:09:41,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:09:41,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 410 [2023-01-27 20:09:41,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 1941 transitions, 65915 flow. Second operand has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 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 20:09:41,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:09:41,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 410 [2023-01-27 20:09:41,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:09:59,138 INFO L130 PetriNetUnfolder]: 17457/32339 cut-off events. [2023-01-27 20:09:59,138 INFO L131 PetriNetUnfolder]: For 1155927/1155927 co-relation queries the response was YES. [2023-01-27 20:09:59,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325912 conditions, 32339 events. 17457/32339 cut-off events. For 1155927/1155927 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 282139 event pairs, 7730 based on Foata normal form. 4/32343 useless extension candidates. Maximal degree in co-relation 325761. Up to 30373 conditions per place. [2023-01-27 20:09:59,889 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 1634 selfloop transitions, 318 changer transitions 12/1964 dead transitions. [2023-01-27 20:09:59,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 1964 transitions, 70175 flow [2023-01-27 20:09:59,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:09:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:09:59,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1401 transitions. [2023-01-27 20:09:59,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34170731707317076 [2023-01-27 20:09:59,891 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1401 transitions. [2023-01-27 20:09:59,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1401 transitions. [2023-01-27 20:09:59,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:09:59,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1401 transitions. [2023-01-27 20:09:59,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.1) internal successors, (1401), 10 states have internal predecessors, (1401), 0 states have call successors, (0), 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 20:09:59,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 20:09:59,895 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 20:09:59,895 INFO L175 Difference]: Start difference. First operand has 604 places, 1941 transitions, 65915 flow. Second operand 10 states and 1401 transitions. [2023-01-27 20:09:59,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 1964 transitions, 70175 flow [2023-01-27 20:10:13,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 1964 transitions, 69449 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-01-27 20:10:13,488 INFO L231 Difference]: Finished difference. Result has 598 places, 1937 transitions, 65751 flow [2023-01-27 20:10:13,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=65197, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=65751, PETRI_PLACES=598, PETRI_TRANSITIONS=1937} [2023-01-27 20:10:13,489 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 572 predicate places. [2023-01-27 20:10:13,489 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 1937 transitions, 65751 flow [2023-01-27 20:10:13,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 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 20:10:13,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:10:13,490 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:10:13,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-01-27 20:10:13,490 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:10:13,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:10:13,490 INFO L85 PathProgramCache]: Analyzing trace with hash -239187364, now seen corresponding path program 11 times [2023-01-27 20:10:13,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:10:13,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966407646] [2023-01-27 20:10:13,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:10:13,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:10:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:10:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-27 20:10:14,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:10:14,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966407646] [2023-01-27 20:10:14,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966407646] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:10:14,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203387049] [2023-01-27 20:10:14,356 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:10:14,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:10:14,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:10:14,358 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:10:14,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-01-27 20:10:14,660 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-27 20:10:14,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:10:14,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-27 20:10:14,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:10:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:10:15,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:10:15,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203387049] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:10:15,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:10:15,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [18] total 28 [2023-01-27 20:10:15,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297388270] [2023-01-27 20:10:15,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:10:15,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:10:15,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:10:15,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:10:15,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2023-01-27 20:10:15,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-27 20:10:15,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 1937 transitions, 65751 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 20:10:15,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:10:15,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-27 20:10:15,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:10:32,899 INFO L130 PetriNetUnfolder]: 17501/32397 cut-off events. [2023-01-27 20:10:32,900 INFO L131 PetriNetUnfolder]: For 1165850/1165850 co-relation queries the response was YES. [2023-01-27 20:10:33,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326721 conditions, 32397 events. 17501/32397 cut-off events. For 1165850/1165850 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 282329 event pairs, 3616 based on Foata normal form. 4/32401 useless extension candidates. Maximal degree in co-relation 326569. Up to 16687 conditions per place. [2023-01-27 20:10:33,557 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 1446 selfloop transitions, 532 changer transitions 2/1980 dead transitions. [2023-01-27 20:10:33,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 1980 transitions, 70363 flow [2023-01-27 20:10:33,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:10:33,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:10:33,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1497 transitions. [2023-01-27 20:10:33,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3319290465631929 [2023-01-27 20:10:33,558 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1497 transitions. [2023-01-27 20:10:33,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1497 transitions. [2023-01-27 20:10:33,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:10:33,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1497 transitions. [2023-01-27 20:10:33,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 136.0909090909091) internal successors, (1497), 11 states have internal predecessors, (1497), 0 states have call successors, (0), 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 20:10:33,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 20:10:33,561 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 20:10:33,561 INFO L175 Difference]: Start difference. First operand has 598 places, 1937 transitions, 65751 flow. Second operand 11 states and 1497 transitions. [2023-01-27 20:10:33,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 1980 transitions, 70363 flow [2023-01-27 20:10:47,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 1980 transitions, 69719 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-01-27 20:10:47,592 INFO L231 Difference]: Finished difference. Result has 601 places, 1945 transitions, 66514 flow [2023-01-27 20:10:47,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=64993, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1935, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=520, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=66514, PETRI_PLACES=601, PETRI_TRANSITIONS=1945} [2023-01-27 20:10:47,593 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 575 predicate places. [2023-01-27 20:10:47,593 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 1945 transitions, 66514 flow [2023-01-27 20:10:47,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 20:10:47,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:10:47,594 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:10:47,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-01-27 20:10:47,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:10:47,794 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:10:47,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:10:47,795 INFO L85 PathProgramCache]: Analyzing trace with hash 980571048, now seen corresponding path program 12 times [2023-01-27 20:10:47,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:10:47,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417567627] [2023-01-27 20:10:47,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:10:47,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:10:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:10:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-27 20:10:48,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:10:48,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417567627] [2023-01-27 20:10:48,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417567627] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:10:48,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229655046] [2023-01-27 20:10:48,593 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:10:48,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:10:48,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:10:48,594 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:10:48,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-01-27 20:10:48,896 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 20:10:48,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:10:48,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-27 20:10:48,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:10:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:10:49,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:10:49,659 INFO L321 Elim1Store]: treesize reduction 44, result has 81.0 percent of original size [2023-01-27 20:10:49,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 222 [2023-01-27 20:10:50,959 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:10:50,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229655046] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:10:50,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:10:50,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 9] total 31 [2023-01-27 20:10:50,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897304984] [2023-01-27 20:10:50,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:10:50,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-27 20:10:50,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:10:50,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-27 20:10:50,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-01-27 20:10:50,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 410 [2023-01-27 20:10:50,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 1945 transitions, 66514 flow. Second operand has 31 states, 31 states have (on average 113.90322580645162) internal successors, (3531), 31 states have internal predecessors, (3531), 0 states have call successors, (0), 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 20:10:50,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:10:50,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 410 [2023-01-27 20:10:50,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:10,428 INFO L130 PetriNetUnfolder]: 17961/33445 cut-off events. [2023-01-27 20:11:10,428 INFO L131 PetriNetUnfolder]: For 1266601/1266601 co-relation queries the response was YES. [2023-01-27 20:11:11,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342055 conditions, 33445 events. 17961/33445 cut-off events. For 1266601/1266601 co-relation queries the response was YES. Maximal size of possible extension queue 1003. Compared 294933 event pairs, 5708 based on Foata normal form. 264/33709 useless extension candidates. Maximal degree in co-relation 341901. Up to 23093 conditions per place. [2023-01-27 20:11:11,234 INFO L137 encePairwiseOnDemand]: 394/410 looper letters, 988 selfloop transitions, 1099 changer transitions 0/2087 dead transitions. [2023-01-27 20:11:11,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 2087 transitions, 74090 flow [2023-01-27 20:11:11,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 20:11:11,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 20:11:11,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2018 transitions. [2023-01-27 20:11:11,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2895265423242468 [2023-01-27 20:11:11,236 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2018 transitions. [2023-01-27 20:11:11,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2018 transitions. [2023-01-27 20:11:11,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:11,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2018 transitions. [2023-01-27 20:11:11,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 118.70588235294117) internal successors, (2018), 17 states have internal predecessors, (2018), 0 states have call successors, (0), 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 20:11:11,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 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 20:11:11,241 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 410.0) internal successors, (7380), 18 states have internal predecessors, (7380), 0 states have call successors, (0), 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 20:11:11,241 INFO L175 Difference]: Start difference. First operand has 601 places, 1945 transitions, 66514 flow. Second operand 17 states and 2018 transitions. [2023-01-27 20:11:11,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 2087 transitions, 74090 flow [2023-01-27 20:11:26,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 2087 transitions, 73259 flow, removed 16 selfloop flow, removed 7 redundant places. [2023-01-27 20:11:26,252 INFO L231 Difference]: Finished difference. Result has 614 places, 1999 transitions, 70780 flow [2023-01-27 20:11:26,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=65473, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1940, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1040, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=883, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=70780, PETRI_PLACES=614, PETRI_TRANSITIONS=1999} [2023-01-27 20:11:26,253 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 588 predicate places. [2023-01-27 20:11:26,254 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 1999 transitions, 70780 flow [2023-01-27 20:11:26,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 113.90322580645162) internal successors, (3531), 31 states have internal predecessors, (3531), 0 states have call successors, (0), 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 20:11:26,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:26,254 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:26,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-01-27 20:11:26,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:11:26,460 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:11:26,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:26,461 INFO L85 PathProgramCache]: Analyzing trace with hash -2134886524, now seen corresponding path program 13 times [2023-01-27 20:11:26,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:26,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683653576] [2023-01-27 20:11:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:26,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:11:27,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:27,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683653576] [2023-01-27 20:11:27,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683653576] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:11:27,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114302077] [2023-01-27 20:11:27,570 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 20:11:27,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:11:27,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:11:27,571 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:11:27,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-01-27 20:11:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:27,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 43 conjunts are in the unsatisfiable core [2023-01-27 20:11:27,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:11:28,210 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:11:28,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 51 [2023-01-27 20:11:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:11:28,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:11:28,730 INFO L321 Elim1Store]: treesize reduction 11, result has 91.3 percent of original size [2023-01-27 20:11:28,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 147 [2023-01-27 20:11:29,655 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:11:29,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114302077] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:11:29,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:11:29,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12, 10] total 43 [2023-01-27 20:11:29,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380846849] [2023-01-27 20:11:29,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:11:29,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-01-27 20:11:29,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:11:29,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-01-27 20:11:29,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2023-01-27 20:11:29,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 410 [2023-01-27 20:11:29,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 1999 transitions, 70780 flow. Second operand has 43 states, 43 states have (on average 105.83720930232558) internal successors, (4551), 43 states have internal predecessors, (4551), 0 states have call successors, (0), 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 20:11:29,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:11:29,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 410 [2023-01-27 20:11:29,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:48,517 INFO L130 PetriNetUnfolder]: 14445/27839 cut-off events. [2023-01-27 20:11:48,517 INFO L131 PetriNetUnfolder]: For 1078274/1078274 co-relation queries the response was YES. [2023-01-27 20:11:48,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284900 conditions, 27839 events. 14445/27839 cut-off events. For 1078274/1078274 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 247579 event pairs, 1122 based on Foata normal form. 186/28025 useless extension candidates. Maximal degree in co-relation 284742. Up to 6539 conditions per place. [2023-01-27 20:11:49,106 INFO L137 encePairwiseOnDemand]: 393/410 looper letters, 545 selfloop transitions, 1262 changer transitions 45/1852 dead transitions. [2023-01-27 20:11:49,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 1852 transitions, 67133 flow [2023-01-27 20:11:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-01-27 20:11:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-01-27 20:11:49,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3916 transitions. [2023-01-27 20:11:49,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26531165311653115 [2023-01-27 20:11:49,109 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3916 transitions. [2023-01-27 20:11:49,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3916 transitions. [2023-01-27 20:11:49,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:49,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3916 transitions. [2023-01-27 20:11:49,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 108.77777777777777) internal successors, (3916), 36 states have internal predecessors, (3916), 0 states have call successors, (0), 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 20:11:49,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 410.0) internal successors, (15170), 37 states have internal predecessors, (15170), 0 states have call successors, (0), 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 20:11:49,118 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 410.0) internal successors, (15170), 37 states have internal predecessors, (15170), 0 states have call successors, (0), 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 20:11:49,118 INFO L175 Difference]: Start difference. First operand has 614 places, 1999 transitions, 70780 flow. Second operand 36 states and 3916 transitions. [2023-01-27 20:11:49,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 1852 transitions, 67133 flow [2023-01-27 20:12:00,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 1852 transitions, 66089 flow, removed 159 selfloop flow, removed 13 redundant places. [2023-01-27 20:12:00,893 INFO L231 Difference]: Finished difference. Result has 633 places, 1728 transitions, 62989 flow [2023-01-27 20:12:00,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=60611, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=62989, PETRI_PLACES=633, PETRI_TRANSITIONS=1728} [2023-01-27 20:12:00,894 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 607 predicate places. [2023-01-27 20:12:00,894 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 1728 transitions, 62989 flow [2023-01-27 20:12:00,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 105.83720930232558) internal successors, (4551), 43 states have internal predecessors, (4551), 0 states have call successors, (0), 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 20:12:00,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:12:00,895 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:12:00,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-01-27 20:12:01,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2023-01-27 20:12:01,095 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:12:01,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:12:01,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1636900852, now seen corresponding path program 14 times [2023-01-27 20:12:01,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:12:01,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164328135] [2023-01-27 20:12:01,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:12:01,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:12:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:12:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-27 20:12:01,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:12:01,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164328135] [2023-01-27 20:12:01,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164328135] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:12:01,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277913099] [2023-01-27 20:12:01,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:12:01,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:12:01,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:12:01,767 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:12:01,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-01-27 20:12:02,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:12:02,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:12:02,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-27 20:12:02,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:12:02,392 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 20:12:02,393 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 26 treesize of output 14 [2023-01-27 20:12:02,413 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:12:02,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:12:02,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277913099] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:12:02,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:12:02,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 27 [2023-01-27 20:12:02,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698446133] [2023-01-27 20:12:02,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:12:02,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:12:02,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:12:02,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:12:02,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2023-01-27 20:12:02,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-27 20:12:02,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 1728 transitions, 62989 flow. Second operand has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 20:12:02,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:12:02,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-27 20:12:02,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:12:16,731 INFO L130 PetriNetUnfolder]: 14279/27263 cut-off events. [2023-01-27 20:12:16,731 INFO L131 PetriNetUnfolder]: For 1079259/1079259 co-relation queries the response was YES. [2023-01-27 20:12:17,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280700 conditions, 27263 events. 14279/27263 cut-off events. For 1079259/1079259 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 238600 event pairs, 2858 based on Foata normal form. 4/27267 useless extension candidates. Maximal degree in co-relation 280545. Up to 13323 conditions per place. [2023-01-27 20:12:17,332 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 1237 selfloop transitions, 501 changer transitions 10/1748 dead transitions. [2023-01-27 20:12:17,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 1748 transitions, 66348 flow [2023-01-27 20:12:17,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:12:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:12:17,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1484 transitions. [2023-01-27 20:12:17,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32904656319290465 [2023-01-27 20:12:17,334 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1484 transitions. [2023-01-27 20:12:17,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1484 transitions. [2023-01-27 20:12:17,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:12:17,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1484 transitions. [2023-01-27 20:12:17,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 134.9090909090909) internal successors, (1484), 11 states have internal predecessors, (1484), 0 states have call successors, (0), 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 20:12:17,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 20:12:17,337 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 20:12:17,337 INFO L175 Difference]: Start difference. First operand has 633 places, 1728 transitions, 62989 flow. Second operand 11 states and 1484 transitions. [2023-01-27 20:12:17,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 1748 transitions, 66348 flow [2023-01-27 20:12:30,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 1748 transitions, 63790 flow, removed 47 selfloop flow, removed 30 redundant places. [2023-01-27 20:12:30,260 INFO L231 Difference]: Finished difference. Result has 606 places, 1713 transitions, 60858 flow [2023-01-27 20:12:30,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=60075, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=501, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=60858, PETRI_PLACES=606, PETRI_TRANSITIONS=1713} [2023-01-27 20:12:30,262 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 580 predicate places. [2023-01-27 20:12:30,262 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 1713 transitions, 60858 flow [2023-01-27 20:12:30,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.0) internal successors, (1560), 12 states have internal predecessors, (1560), 0 states have call successors, (0), 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 20:12:30,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:12:30,262 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:12:30,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-01-27 20:12:30,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:12:30,475 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:12:30,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:12:30,475 INFO L85 PathProgramCache]: Analyzing trace with hash 14877656, now seen corresponding path program 15 times [2023-01-27 20:12:30,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:12:30,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008613124] [2023-01-27 20:12:30,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:12:30,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:12:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:12:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:12:30,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:12:30,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008613124] [2023-01-27 20:12:30,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008613124] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:12:30,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:12:30,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:12:30,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721508078] [2023-01-27 20:12:30,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:12:30,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:12:30,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:12:30,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:12:30,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:12:30,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 410 [2023-01-27 20:12:30,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 1713 transitions, 60858 flow. Second operand has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 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 20:12:30,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:12:30,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 410 [2023-01-27 20:12:30,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:12:45,901 INFO L130 PetriNetUnfolder]: 14269/27239 cut-off events. [2023-01-27 20:12:45,902 INFO L131 PetriNetUnfolder]: For 1046095/1046095 co-relation queries the response was YES. [2023-01-27 20:12:46,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274851 conditions, 27239 events. 14269/27239 cut-off events. For 1046095/1046095 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 238544 event pairs, 6528 based on Foata normal form. 4/27243 useless extension candidates. Maximal degree in co-relation 274709. Up to 25297 conditions per place. [2023-01-27 20:12:46,333 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 1477 selfloop transitions, 233 changer transitions 13/1723 dead transitions. [2023-01-27 20:12:46,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 1723 transitions, 64276 flow [2023-01-27 20:12:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:12:46,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:12:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1398 transitions. [2023-01-27 20:12:46,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409756097560976 [2023-01-27 20:12:46,335 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1398 transitions. [2023-01-27 20:12:46,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1398 transitions. [2023-01-27 20:12:46,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:12:46,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1398 transitions. [2023-01-27 20:12:46,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 139.8) internal successors, (1398), 10 states have internal predecessors, (1398), 0 states have call successors, (0), 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 20:12:46,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 20:12:46,337 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 410.0) internal successors, (4510), 11 states have internal predecessors, (4510), 0 states have call successors, (0), 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 20:12:46,337 INFO L175 Difference]: Start difference. First operand has 606 places, 1713 transitions, 60858 flow. Second operand 10 states and 1398 transitions. [2023-01-27 20:12:46,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 1723 transitions, 64276 flow [2023-01-27 20:12:57,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 1723 transitions, 62761 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-01-27 20:12:58,010 INFO L231 Difference]: Finished difference. Result has 598 places, 1702 transitions, 59473 flow [2023-01-27 20:12:58,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=59229, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=59473, PETRI_PLACES=598, PETRI_TRANSITIONS=1702} [2023-01-27 20:12:58,012 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 572 predicate places. [2023-01-27 20:12:58,012 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 1702 transitions, 59473 flow [2023-01-27 20:12:58,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 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 20:12:58,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:12:58,013 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:12:58,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2023-01-27 20:12:58,013 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:12:58,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:12:58,013 INFO L85 PathProgramCache]: Analyzing trace with hash 136566742, now seen corresponding path program 16 times [2023-01-27 20:12:58,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:12:58,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475678711] [2023-01-27 20:12:58,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:12:58,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:12:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:12:59,048 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-27 20:12:59,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:12:59,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475678711] [2023-01-27 20:12:59,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475678711] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:12:59,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038433375] [2023-01-27 20:12:59,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:12:59,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:12:59,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:12:59,050 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:12:59,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-01-27 20:12:59,342 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:12:59,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:12:59,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-27 20:12:59,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:12:59,542 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:12:59,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:12:59,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038433375] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:12:59,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:12:59,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 28 [2023-01-27 20:12:59,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683474574] [2023-01-27 20:12:59,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:12:59,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:12:59,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:12:59,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:12:59,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2023-01-27 20:12:59,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 410 [2023-01-27 20:12:59,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 1702 transitions, 59473 flow. Second operand has 9 states, 9 states have (on average 139.66666666666666) internal successors, (1257), 9 states have internal predecessors, (1257), 0 states have call successors, (0), 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 20:12:59,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:12:59,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 410 [2023-01-27 20:12:59,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:13:13,655 INFO L130 PetriNetUnfolder]: 14245/27181 cut-off events. [2023-01-27 20:13:13,655 INFO L131 PetriNetUnfolder]: For 1000383/1000383 co-relation queries the response was YES. [2023-01-27 20:13:14,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269818 conditions, 27181 events. 14245/27181 cut-off events. For 1000383/1000383 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 237849 event pairs, 6506 based on Foata normal form. 4/27185 useless extension candidates. Maximal degree in co-relation 269677. Up to 25206 conditions per place. [2023-01-27 20:13:14,184 INFO L137 encePairwiseOnDemand]: 400/410 looper letters, 1472 selfloop transitions, 243 changer transitions 3/1718 dead transitions. [2023-01-27 20:13:14,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 1718 transitions, 62869 flow [2023-01-27 20:13:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:13:14,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:13:14,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1580 transitions. [2023-01-27 20:13:14,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35033259423503327 [2023-01-27 20:13:14,186 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1580 transitions. [2023-01-27 20:13:14,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1580 transitions. [2023-01-27 20:13:14,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:13:14,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1580 transitions. [2023-01-27 20:13:14,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 143.63636363636363) internal successors, (1580), 11 states have internal predecessors, (1580), 0 states have call successors, (0), 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 20:13:14,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 20:13:14,189 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 410.0) internal successors, (4920), 12 states have internal predecessors, (4920), 0 states have call successors, (0), 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 20:13:14,189 INFO L175 Difference]: Start difference. First operand has 598 places, 1702 transitions, 59473 flow. Second operand 11 states and 1580 transitions. [2023-01-27 20:13:14,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 1718 transitions, 62869 flow [2023-01-27 20:13:25,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 1718 transitions, 62277 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-27 20:13:25,425 INFO L231 Difference]: Finished difference. Result has 594 places, 1697 transitions, 59131 flow [2023-01-27 20:13:25,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=58628, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=59131, PETRI_PLACES=594, PETRI_TRANSITIONS=1697} [2023-01-27 20:13:25,426 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 568 predicate places. [2023-01-27 20:13:25,426 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 1697 transitions, 59131 flow [2023-01-27 20:13:25,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 139.66666666666666) internal successors, (1257), 9 states have internal predecessors, (1257), 0 states have call successors, (0), 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 20:13:25,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:13:25,427 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:13:25,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-01-27 20:13:25,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2023-01-27 20:13:25,627 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:13:25,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:13:25,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1839896538, now seen corresponding path program 17 times [2023-01-27 20:13:25,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:13:25,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278350802] [2023-01-27 20:13:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:13:25,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:13:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:13:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:13:26,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:13:26,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278350802] [2023-01-27 20:13:26,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278350802] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:13:26,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623070430] [2023-01-27 20:13:26,003 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:13:26,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:13:26,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:13:26,004 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:13:26,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-01-27 20:13:26,340 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-27 20:13:26,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:13:26,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-27 20:13:26,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:13:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:13:26,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:13:27,267 INFO L321 Elim1Store]: treesize reduction 66, result has 79.8 percent of original size [2023-01-27 20:13:27,268 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 182 treesize of output 306 [2023-01-27 20:13:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:13:30,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623070430] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:13:30,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:13:30,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 29 [2023-01-27 20:13:30,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495888966] [2023-01-27 20:13:30,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:13:30,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-27 20:13:30,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:13:30,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-27 20:13:30,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2023-01-27 20:13:30,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 410 [2023-01-27 20:13:30,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 1697 transitions, 59131 flow. Second operand has 29 states, 29 states have (on average 130.0) internal successors, (3770), 29 states have internal predecessors, (3770), 0 states have call successors, (0), 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 20:13:30,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:13:30,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 410 [2023-01-27 20:13:30,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-01-27 20:13:37,949 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 20:13:37,949 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 20:13:38,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 20:13:38,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 20:13:38,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-01-27 20:13:38,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:13:38,320 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 128/410 universal loopers) in iteration 98,while PetriNetUnfolder was constructing finite prefix that currently has 156466 conditions, 14227 events (7815/14226 cut-off events. For 623946/623946 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 118475 event pairs, 1197 based on Foata normal form. 74/15043 useless extension candidates. Maximal degree in co-relation 156324. Up to 5546 conditions per place.). [2023-01-27 20:13:38,321 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 20:13:38,321 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 20:13:38,322 INFO L445 BasicCegarLoop]: Path program histogram: [28, 22, 18, 17, 7, 4, 1, 1] [2023-01-27 20:13:38,324 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 20:13:38,324 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 20:13:38,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 08:13:38 BasicIcfg [2023-01-27 20:13:38,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 20:13:38,326 INFO L158 Benchmark]: Toolchain (without parser) took 759947.18ms. Allocated memory was 329.3MB in the beginning and 13.4GB in the end (delta: 13.0GB). Free memory was 277.0MB in the beginning and 11.1GB in the end (delta: -10.8GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. [2023-01-27 20:13:38,326 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:13:38,327 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.62ms. Allocated memory is still 329.3MB. Free memory was 276.7MB in the beginning and 265.3MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 20:13:38,327 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.28ms. Allocated memory is still 329.3MB. Free memory was 265.1MB in the beginning and 263.2MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:13:38,327 INFO L158 Benchmark]: Boogie Preprocessor took 29.32ms. Allocated memory is still 329.3MB. Free memory was 263.2MB in the beginning and 261.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:13:38,327 INFO L158 Benchmark]: RCFGBuilder took 595.50ms. Allocated memory is still 329.3MB. Free memory was 261.3MB in the beginning and 288.8MB in the end (delta: -27.4MB). Peak memory consumption was 8.0MB. Max. memory is 16.0GB. [2023-01-27 20:13:38,327 INFO L158 Benchmark]: TraceAbstraction took 759025.62ms. Allocated memory was 329.3MB in the beginning and 13.4GB in the end (delta: 13.0GB). Free memory was 288.2MB in the beginning and 11.1GB in the end (delta: -10.8GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. [2023-01-27 20:13:38,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 259.62ms. Allocated memory is still 329.3MB. Free memory was 276.7MB in the beginning and 265.3MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.28ms. Allocated memory is still 329.3MB. Free memory was 265.1MB in the beginning and 263.2MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 29.32ms. Allocated memory is still 329.3MB. Free memory was 263.2MB in the beginning and 261.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 595.50ms. Allocated memory is still 329.3MB. Free memory was 261.3MB in the beginning and 288.8MB in the end (delta: -27.4MB). Peak memory consumption was 8.0MB. Max. memory is 16.0GB. * TraceAbstraction took 759025.62ms. Allocated memory was 329.3MB in the beginning and 13.4GB in the end (delta: 13.0GB). Free memory was 288.2MB in the beginning and 11.1GB in the end (delta: -10.8GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 177 PlacesBefore, 26 PlacesAfterwards, 189 TransitionsBefore, 25 TransitionsAfterwards, 3332 CoEnabledTransitionPairs, 7 FixpointIterations, 92 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 27 TrivialYvCompositions, 19 ConcurrentYvCompositions, 13 ChoiceCompositions, 211 TotalNumberOfCompositions, 3976 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3441, independent: 3370, independent conditional: 0, independent unconditional: 3370, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1966, independent: 1951, independent conditional: 0, independent unconditional: 1951, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3441, independent: 1419, independent conditional: 0, independent unconditional: 1419, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 1966, unknown conditional: 0, unknown unconditional: 1966] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 128/410 universal loopers) in iteration 98,while PetriNetUnfolder was constructing finite prefix that currently has 156466 conditions, 14227 events (7815/14226 cut-off events. For 623946/623946 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 118475 event pairs, 1197 based on Foata normal form. 74/15043 useless extension candidates. Maximal degree in co-relation 156324. Up to 5546 conditions per place.). - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 128/410 universal loopers) in iteration 98,while PetriNetUnfolder was constructing finite prefix that currently has 156466 conditions, 14227 events (7815/14226 cut-off events. For 623946/623946 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 118475 event pairs, 1197 based on Foata normal form. 74/15043 useless extension candidates. Maximal degree in co-relation 156324. Up to 5546 conditions per place.). - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (29states, 128/410 universal loopers) in iteration 98,while PetriNetUnfolder was constructing finite prefix that currently has 156466 conditions, 14227 events (7815/14226 cut-off events. For 623946/623946 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 118475 event pairs, 1197 based on Foata normal form. 74/15043 useless extension candidates. Maximal degree in co-relation 156324. Up to 5546 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 243 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 758.9s, OverallIterations: 98, TraceHistogramMax: 5, PathProgramHistogramMax: 28, EmptinessCheckTime: 0.0s, AutomataDifference: 483.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 19557 SdHoareTripleChecker+Valid, 23.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19557 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 19.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 149 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 758 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43080 IncrementalHoareTripleChecker+Invalid, 43988 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 758 mSolverCounterUnsat, 8 mSDtfsCounter, 43080 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4588 GetRequests, 1842 SyntacticMatches, 7 SemanticMatches, 2739 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 21622 ImplicationChecksByTransitivity, 54.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70780occurred in iteration=93, InterpolantAutomatonStates: 1460, 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: 0.9s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 247.4s InterpolantComputationTime, 4153 NumberOfCodeBlocks, 3937 NumberOfCodeBlocksAsserted, 184 NumberOfCheckSat, 4668 ConstructedInterpolants, 35 QuantifiedInterpolants, 51982 SizeOfPredicates, 666 NumberOfNonLiveVariables, 10991 ConjunctsInSsa, 1235 ConjunctsInUnsatCore, 167 InterpolantComputations, 79 PerfectInterpolantSequences, 4432/4976 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