/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:14:18,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:14:18,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:14:18,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:14:18,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:14:18,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:14:18,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:14:18,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:14:18,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:14:18,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:14:18,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:14:18,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:14:18,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:14:18,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:14:18,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:14:18,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:14:18,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:14:18,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:14:18,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:14:18,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:14:18,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:14:18,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:14:18,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:14:18,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:14:18,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:14:18,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:14:18,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:14:18,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:14:18,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:14:18,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:14:18,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:14:18,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:14:18,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:14:18,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:14:18,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:14:18,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:14:18,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:14:18,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:14:18,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:14:18,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:14:18,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:14:18,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:14:18,830 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:14:18,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:14:18,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:14:18,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:14:18,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:14:18,832 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:14:18,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:14:18,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:14:18,833 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:14:18,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:14:18,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:14:18,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:14:18,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:14:18,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:14:18,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:14:18,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:14:18,835 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:14:18,835 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:14:18,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:14:18,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:14:18,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:14:18,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:14:18,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:14:18,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:14:18,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:14:18,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:14:18,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:14:18,836 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:14:18,836 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:14:18,836 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:14:18,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:14:18,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:14:18,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:14:18,837 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:14:19,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:14:19,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:14:19,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:14:19,094 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:14:19,094 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:14:19,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c [2022-01-10 06:14:19,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab721d8b/f8ca3c198ab7408b97a2dd79157b3342/FLAG44c751706 [2022-01-10 06:14:19,646 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:14:19,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c [2022-01-10 06:14:19,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab721d8b/f8ca3c198ab7408b97a2dd79157b3342/FLAG44c751706 [2022-01-10 06:14:19,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab721d8b/f8ca3c198ab7408b97a2dd79157b3342 [2022-01-10 06:14:19,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:14:19,952 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:14:19,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:14:19,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:14:19,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:14:19,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:14:19" (1/1) ... [2022-01-10 06:14:19,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59597f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:14:19, skipping insertion in model container [2022-01-10 06:14:19,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:14:19" (1/1) ... [2022-01-10 06:14:19,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:14:20,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:14:20,453 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2022-01-10 06:14:20,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:14:20,497 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:14:20,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:14:20,622 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2022-01-10 06:14:20,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:14:20,657 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:14:20,758 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2022-01-10 06:14:20,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:14:20,808 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:14:20,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:14:20 WrapperNode [2022-01-10 06:14:20,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:14:20,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:14:20,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:14:20,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:14:20,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:14:20" (1/1) ... [2022-01-10 06:14:20,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:14:20" (1/1) ... [2022-01-10 06:14:20,921 INFO L137 Inliner]: procedures = 99, calls = 349, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 1105 [2022-01-10 06:14:20,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:14:20,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:14:20,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:14:20,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:14:20,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:14:20" (1/1) ... [2022-01-10 06:14:20,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:14:20" (1/1) ... [2022-01-10 06:14:20,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:14:20" (1/1) ... [2022-01-10 06:14:20,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:14:20" (1/1) ... [2022-01-10 06:14:20,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:14:20" (1/1) ... [2022-01-10 06:14:20,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:14:20" (1/1) ... [2022-01-10 06:14:20,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:14:20" (1/1) ... [2022-01-10 06:14:20,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:14:20,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:14:20,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:14:20,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:14:20,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:14:20" (1/1) ... [2022-01-10 06:14:20,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:14:21,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:14:21,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 06:14:21,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 06:14:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-01-10 06:14:21,106 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-01-10 06:14:21,106 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-01-10 06:14:21,107 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-01-10 06:14:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-01-10 06:14:21,107 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-01-10 06:14:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-01-10 06:14:21,107 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-01-10 06:14:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-01-10 06:14:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-01-10 06:14:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-01-10 06:14:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-01-10 06:14:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-01-10 06:14:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-01-10 06:14:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-01-10 06:14:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-01-10 06:14:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-01-10 06:14:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-01-10 06:14:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-01-10 06:14:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-01-10 06:14:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:14:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-01-10 06:14:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-01-10 06:14:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-01-10 06:14:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-01-10 06:14:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-01-10 06:14:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-01-10 06:14:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-01-10 06:14:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-01-10 06:14:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-01-10 06:14:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-01-10 06:14:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-01-10 06:14:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-01-10 06:14:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-01-10 06:14:21,110 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-01-10 06:14:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:14:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-01-10 06:14:21,110 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-01-10 06:14:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-01-10 06:14:21,110 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-01-10 06:14:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-01-10 06:14:21,110 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-01-10 06:14:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-01-10 06:14:21,110 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-01-10 06:14:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-01-10 06:14:21,111 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-01-10 06:14:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-01-10 06:14:21,111 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-01-10 06:14:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-01-10 06:14:21,111 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-01-10 06:14:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:14:21,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:14:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-01-10 06:14:21,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-01-10 06:14:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-01-10 06:14:21,112 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-01-10 06:14:21,288 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:14:21,290 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:14:22,403 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:14:22,420 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:14:22,420 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:14:22,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:14:22 BoogieIcfgContainer [2022-01-10 06:14:22,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:14:22,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:14:22,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:14:22,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:14:22,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:14:19" (1/3) ... [2022-01-10 06:14:22,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7c88ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:14:22, skipping insertion in model container [2022-01-10 06:14:22,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:14:20" (2/3) ... [2022-01-10 06:14:22,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7c88ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:14:22, skipping insertion in model container [2022-01-10 06:14:22,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:14:22" (3/3) ... [2022-01-10 06:14:22,432 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product28.cil.c [2022-01-10 06:14:22,437 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:14:22,437 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:14:22,495 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:14:22,503 INFO L339 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=true, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 06:14:22,503 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:14:22,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 585 states, 455 states have (on average 1.6835164835164835) internal successors, (766), 478 states have internal predecessors, (766), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) [2022-01-10 06:14:22,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 06:14:22,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:22,571 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:22,572 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:22,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:22,577 INFO L85 PathProgramCache]: Analyzing trace with hash -512349069, now seen corresponding path program 1 times [2022-01-10 06:14:22,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:22,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252427707] [2022-01-10 06:14:22,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:22,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:22,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:22,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:22,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:14:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:23,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:14:23,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 06:14:23,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:23,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:23,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252427707] [2022-01-10 06:14:23,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252427707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:23,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:23,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:14:23,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632749098] [2022-01-10 06:14:23,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:23,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:14:23,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:23,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:14:23,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:14:23,312 INFO L87 Difference]: Start difference. First operand has 585 states, 455 states have (on average 1.6835164835164835) internal successors, (766), 478 states have internal predecessors, (766), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-01-10 06:14:23,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:23,383 INFO L93 Difference]: Finished difference Result 606 states and 1000 transitions. [2022-01-10 06:14:23,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:14:23,385 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2022-01-10 06:14:23,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:23,405 INFO L225 Difference]: With dead ends: 606 [2022-01-10 06:14:23,406 INFO L226 Difference]: Without dead ends: 577 [2022-01-10 06:14:23,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:14:23,412 INFO L933 BasicCegarLoop]: 961 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:23,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:14:23,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-01-10 06:14:23,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-01-10 06:14:23,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 449 states have (on average 1.6815144766146994) internal successors, (755), 470 states have internal predecessors, (755), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:23,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 954 transitions. [2022-01-10 06:14:23,523 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 954 transitions. Word has length 83 [2022-01-10 06:14:23,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:23,524 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 954 transitions. [2022-01-10 06:14:23,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-01-10 06:14:23,525 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 954 transitions. [2022-01-10 06:14:23,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 06:14:23,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:23,529 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:23,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:23,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:23,730 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:23,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:23,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1351265145, now seen corresponding path program 1 times [2022-01-10 06:14:23,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:23,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124417549] [2022-01-10 06:14:23,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:23,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:23,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:23,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:23,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:14:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:24,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:14:24,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:14:24,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:24,310 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:24,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124417549] [2022-01-10 06:14:24,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124417549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:24,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:24,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:14:24,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32019988] [2022-01-10 06:14:24,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:24,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:14:24,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:24,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:14:24,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:14:24,313 INFO L87 Difference]: Start difference. First operand 577 states and 954 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:24,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:24,426 INFO L93 Difference]: Finished difference Result 1145 states and 1900 transitions. [2022-01-10 06:14:24,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:14:24,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2022-01-10 06:14:24,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:24,434 INFO L225 Difference]: With dead ends: 1145 [2022-01-10 06:14:24,434 INFO L226 Difference]: Without dead ends: 577 [2022-01-10 06:14:24,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:14:24,441 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 14 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:24,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 2813 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:14:24,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-01-10 06:14:24,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-01-10 06:14:24,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 449 states have (on average 1.6792873051224944) internal successors, (754), 470 states have internal predecessors, (754), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:24,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 953 transitions. [2022-01-10 06:14:24,467 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 953 transitions. Word has length 85 [2022-01-10 06:14:24,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:24,467 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 953 transitions. [2022-01-10 06:14:24,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:24,468 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 953 transitions. [2022-01-10 06:14:24,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 06:14:24,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:24,470 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:24,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:24,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:24,677 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:24,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:24,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1160595213, now seen corresponding path program 1 times [2022-01-10 06:14:24,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:24,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446782561] [2022-01-10 06:14:24,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:24,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:24,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:24,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:24,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:14:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:25,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:14:25,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:14:25,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:25,196 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:25,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446782561] [2022-01-10 06:14:25,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446782561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:25,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:25,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:14:25,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258302135] [2022-01-10 06:14:25,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:25,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:14:25,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:25,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:14:25,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:14:25,201 INFO L87 Difference]: Start difference. First operand 577 states and 953 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:25,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:25,265 INFO L93 Difference]: Finished difference Result 1145 states and 1898 transitions. [2022-01-10 06:14:25,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:14:25,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2022-01-10 06:14:25,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:25,270 INFO L225 Difference]: With dead ends: 1145 [2022-01-10 06:14:25,271 INFO L226 Difference]: Without dead ends: 577 [2022-01-10 06:14:25,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:14:25,276 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 12 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:25,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2813 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:14:25,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-01-10 06:14:25,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-01-10 06:14:25,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 449 states have (on average 1.6770601336302895) internal successors, (753), 470 states have internal predecessors, (753), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:25,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 952 transitions. [2022-01-10 06:14:25,302 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 952 transitions. Word has length 87 [2022-01-10 06:14:25,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:25,302 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 952 transitions. [2022-01-10 06:14:25,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:25,302 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 952 transitions. [2022-01-10 06:14:25,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 06:14:25,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:25,304 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:25,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:25,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:25,521 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:25,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:25,522 INFO L85 PathProgramCache]: Analyzing trace with hash 301700615, now seen corresponding path program 1 times [2022-01-10 06:14:25,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:25,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690864967] [2022-01-10 06:14:25,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:25,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:25,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:25,524 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:25,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:14:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:25,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:14:25,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:26,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:14:26,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:26,066 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:26,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690864967] [2022-01-10 06:14:26,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690864967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:26,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:26,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:14:26,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454035145] [2022-01-10 06:14:26,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:26,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:14:26,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:26,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:14:26,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:14:26,076 INFO L87 Difference]: Start difference. First operand 577 states and 952 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:26,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:26,143 INFO L93 Difference]: Finished difference Result 1149 states and 1901 transitions. [2022-01-10 06:14:26,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:14:26,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2022-01-10 06:14:26,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:26,147 INFO L225 Difference]: With dead ends: 1149 [2022-01-10 06:14:26,147 INFO L226 Difference]: Without dead ends: 583 [2022-01-10 06:14:26,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:14:26,157 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 13 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:26,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 2813 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:14:26,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-01-10 06:14:26,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2022-01-10 06:14:26,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 454 states have (on average 1.669603524229075) internal successors, (758), 475 states have internal predecessors, (758), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:26,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 957 transitions. [2022-01-10 06:14:26,181 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 957 transitions. Word has length 89 [2022-01-10 06:14:26,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:26,181 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 957 transitions. [2022-01-10 06:14:26,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:26,181 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 957 transitions. [2022-01-10 06:14:26,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 06:14:26,183 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:26,183 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:26,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:26,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:26,401 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:26,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:26,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1609654872, now seen corresponding path program 1 times [2022-01-10 06:14:26,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:26,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837612425] [2022-01-10 06:14:26,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:26,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:26,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:26,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:26,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:14:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:26,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:14:26,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:14:26,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:26,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:26,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837612425] [2022-01-10 06:14:26,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837612425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:26,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:26,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:14:26,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276554780] [2022-01-10 06:14:26,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:26,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:14:26,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:26,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:14:26,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:14:26,941 INFO L87 Difference]: Start difference. First operand 583 states and 957 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:26,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:26,998 INFO L93 Difference]: Finished difference Result 1148 states and 1892 transitions. [2022-01-10 06:14:26,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:14:26,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2022-01-10 06:14:26,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:27,002 INFO L225 Difference]: With dead ends: 1148 [2022-01-10 06:14:27,003 INFO L226 Difference]: Without dead ends: 583 [2022-01-10 06:14:27,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:14:27,006 INFO L933 BasicCegarLoop]: 941 mSDtfsCounter, 8 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:27,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 2814 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:14:27,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-01-10 06:14:27,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2022-01-10 06:14:27,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 454 states have (on average 1.6674008810572687) internal successors, (757), 475 states have internal predecessors, (757), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:27,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 956 transitions. [2022-01-10 06:14:27,024 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 956 transitions. Word has length 90 [2022-01-10 06:14:27,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:27,024 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 956 transitions. [2022-01-10 06:14:27,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:27,024 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 956 transitions. [2022-01-10 06:14:27,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 06:14:27,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:27,026 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:27,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:27,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:27,244 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:27,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:27,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1558891221, now seen corresponding path program 1 times [2022-01-10 06:14:27,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:27,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468441000] [2022-01-10 06:14:27,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:27,246 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:27,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:27,248 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:27,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 06:14:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:27,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:14:27,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:14:27,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:27,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:27,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468441000] [2022-01-10 06:14:27,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468441000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:27,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:27,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:14:27,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342440012] [2022-01-10 06:14:27,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:27,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:14:27,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:27,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:14:27,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:14:27,760 INFO L87 Difference]: Start difference. First operand 583 states and 956 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:27,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:27,814 INFO L93 Difference]: Finished difference Result 1148 states and 1891 transitions. [2022-01-10 06:14:27,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:14:27,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2022-01-10 06:14:27,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:27,823 INFO L225 Difference]: With dead ends: 1148 [2022-01-10 06:14:27,823 INFO L226 Difference]: Without dead ends: 583 [2022-01-10 06:14:27,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:14:27,827 INFO L933 BasicCegarLoop]: 941 mSDtfsCounter, 6 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:27,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2814 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:14:27,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-01-10 06:14:27,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2022-01-10 06:14:27,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 454 states have (on average 1.6651982378854626) internal successors, (756), 475 states have internal predecessors, (756), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:27,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 955 transitions. [2022-01-10 06:14:27,851 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 955 transitions. Word has length 91 [2022-01-10 06:14:27,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:27,851 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 955 transitions. [2022-01-10 06:14:27,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 955 transitions. [2022-01-10 06:14:27,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 06:14:27,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:27,854 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:27,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:28,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:28,071 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:28,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:28,072 INFO L85 PathProgramCache]: Analyzing trace with hash -811976436, now seen corresponding path program 1 times [2022-01-10 06:14:28,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:28,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566783512] [2022-01-10 06:14:28,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:28,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:28,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:28,074 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:28,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:14:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:28,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:14:28,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:14:28,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:28,605 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:28,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566783512] [2022-01-10 06:14:28,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566783512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:28,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:28,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:14:28,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338951336] [2022-01-10 06:14:28,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:28,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:14:28,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:28,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:14:28,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:14:28,607 INFO L87 Difference]: Start difference. First operand 583 states and 955 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:28,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:28,756 INFO L93 Difference]: Finished difference Result 1165 states and 1919 transitions. [2022-01-10 06:14:28,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:14:28,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-01-10 06:14:28,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:28,762 INFO L225 Difference]: With dead ends: 1165 [2022-01-10 06:14:28,762 INFO L226 Difference]: Without dead ends: 604 [2022-01-10 06:14:28,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:14:28,766 INFO L933 BasicCegarLoop]: 939 mSDtfsCounter, 148 mSDsluCounter, 4588 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5527 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:28,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 5527 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:14:28,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-01-10 06:14:28,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 602. [2022-01-10 06:14:28,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 470 states have (on average 1.6638297872340426) internal successors, (782), 493 states have internal predecessors, (782), 103 states have call successors, (103), 27 states have call predecessors, (103), 28 states have return successors, (101), 95 states have call predecessors, (101), 98 states have call successors, (101) [2022-01-10 06:14:28,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 986 transitions. [2022-01-10 06:14:28,785 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 986 transitions. Word has length 92 [2022-01-10 06:14:28,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:28,786 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 986 transitions. [2022-01-10 06:14:28,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:28,786 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 986 transitions. [2022-01-10 06:14:28,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 06:14:28,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:28,788 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:28,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:29,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:29,004 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:29,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:29,004 INFO L85 PathProgramCache]: Analyzing trace with hash 55075789, now seen corresponding path program 1 times [2022-01-10 06:14:29,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:29,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270679294] [2022-01-10 06:14:29,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:29,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:29,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:29,006 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:29,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:14:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:29,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:14:29,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 06:14:29,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:29,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:29,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270679294] [2022-01-10 06:14:29,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270679294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:29,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:29,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:14:29,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681413759] [2022-01-10 06:14:29,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:29,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:14:29,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:29,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:14:29,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:14:29,511 INFO L87 Difference]: Start difference. First operand 602 states and 986 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:29,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:29,569 INFO L93 Difference]: Finished difference Result 1178 states and 1941 transitions. [2022-01-10 06:14:29,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:14:29,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2022-01-10 06:14:29,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:29,574 INFO L225 Difference]: With dead ends: 1178 [2022-01-10 06:14:29,574 INFO L226 Difference]: Without dead ends: 598 [2022-01-10 06:14:29,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:14:29,577 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 8 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:29,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 2813 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:14:29,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-01-10 06:14:29,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2022-01-10 06:14:29,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 468 states have (on average 1.6645299145299146) internal successors, (779), 490 states have internal predecessors, (779), 102 states have call successors, (102), 27 states have call predecessors, (102), 27 states have return successors, (98), 94 states have call predecessors, (98), 97 states have call successors, (98) [2022-01-10 06:14:29,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 979 transitions. [2022-01-10 06:14:29,594 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 979 transitions. Word has length 92 [2022-01-10 06:14:29,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:29,594 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 979 transitions. [2022-01-10 06:14:29,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:29,595 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 979 transitions. [2022-01-10 06:14:29,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 06:14:29,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:29,596 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:29,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:29,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:29,816 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:29,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:29,816 INFO L85 PathProgramCache]: Analyzing trace with hash 240761748, now seen corresponding path program 1 times [2022-01-10 06:14:29,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:29,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258122421] [2022-01-10 06:14:29,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:29,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:29,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:29,818 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:29,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:14:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:30,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:14:30,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:14:30,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:30,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:30,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258122421] [2022-01-10 06:14:30,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258122421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:30,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:30,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:14:30,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898841355] [2022-01-10 06:14:30,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:30,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:14:30,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:30,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:14:30,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:14:30,323 INFO L87 Difference]: Start difference. First operand 598 states and 979 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:30,458 INFO L93 Difference]: Finished difference Result 1204 states and 1986 transitions. [2022-01-10 06:14:30,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:14:30,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2022-01-10 06:14:30,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:30,464 INFO L225 Difference]: With dead ends: 1204 [2022-01-10 06:14:30,464 INFO L226 Difference]: Without dead ends: 598 [2022-01-10 06:14:30,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:14:30,467 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 134 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:30,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 2621 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:14:30,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-01-10 06:14:30,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2022-01-10 06:14:30,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 468 states have (on average 1.6538461538461537) internal successors, (774), 490 states have internal predecessors, (774), 102 states have call successors, (102), 27 states have call predecessors, (102), 27 states have return successors, (98), 94 states have call predecessors, (98), 97 states have call successors, (98) [2022-01-10 06:14:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 974 transitions. [2022-01-10 06:14:30,485 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 974 transitions. Word has length 93 [2022-01-10 06:14:30,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:30,485 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 974 transitions. [2022-01-10 06:14:30,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:30,485 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 974 transitions. [2022-01-10 06:14:30,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 06:14:30,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:30,487 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:30,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:30,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:30,703 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:30,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:30,704 INFO L85 PathProgramCache]: Analyzing trace with hash 451885592, now seen corresponding path program 1 times [2022-01-10 06:14:30,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:30,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888775835] [2022-01-10 06:14:30,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:30,705 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:30,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:30,706 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:30,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 06:14:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:30,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:14:30,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:14:31,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:31,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:31,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888775835] [2022-01-10 06:14:31,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888775835] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:31,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:31,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:14:31,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88847062] [2022-01-10 06:14:31,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:31,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:14:31,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:31,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:14:31,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:14:31,165 INFO L87 Difference]: Start difference. First operand 598 states and 974 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:31,303 INFO L93 Difference]: Finished difference Result 1204 states and 1976 transitions. [2022-01-10 06:14:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:14:31,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 95 [2022-01-10 06:14:31,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:31,309 INFO L225 Difference]: With dead ends: 1204 [2022-01-10 06:14:31,309 INFO L226 Difference]: Without dead ends: 598 [2022-01-10 06:14:31,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:14:31,313 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 128 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:31,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 2621 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:14:31,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-01-10 06:14:31,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2022-01-10 06:14:31,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 468 states have (on average 1.643162393162393) internal successors, (769), 490 states have internal predecessors, (769), 102 states have call successors, (102), 27 states have call predecessors, (102), 27 states have return successors, (98), 94 states have call predecessors, (98), 97 states have call successors, (98) [2022-01-10 06:14:31,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 969 transitions. [2022-01-10 06:14:31,334 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 969 transitions. Word has length 95 [2022-01-10 06:14:31,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:31,334 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 969 transitions. [2022-01-10 06:14:31,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:31,334 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 969 transitions. [2022-01-10 06:14:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 06:14:31,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:31,336 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:31,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:31,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:31,554 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:31,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:31,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1580397324, now seen corresponding path program 1 times [2022-01-10 06:14:31,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:31,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043389104] [2022-01-10 06:14:31,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:31,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:31,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:31,558 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:31,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 06:14:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:31,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:14:31,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:32,004 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:14:32,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:32,005 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:32,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043389104] [2022-01-10 06:14:32,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043389104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:32,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:32,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:14:32,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382297850] [2022-01-10 06:14:32,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:32,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:14:32,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:32,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:14:32,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:14:32,007 INFO L87 Difference]: Start difference. First operand 598 states and 969 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:32,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:32,145 INFO L93 Difference]: Finished difference Result 1225 states and 1997 transitions. [2022-01-10 06:14:32,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:14:32,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2022-01-10 06:14:32,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:32,153 INFO L225 Difference]: With dead ends: 1225 [2022-01-10 06:14:32,153 INFO L226 Difference]: Without dead ends: 628 [2022-01-10 06:14:32,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:14:32,158 INFO L933 BasicCegarLoop]: 897 mSDtfsCounter, 143 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:32,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 2631 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:14:32,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-01-10 06:14:32,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 613. [2022-01-10 06:14:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 483 states have (on average 1.6231884057971016) internal successors, (784), 504 states have internal predecessors, (784), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:32,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 983 transitions. [2022-01-10 06:14:32,176 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 983 transitions. Word has length 97 [2022-01-10 06:14:32,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:32,177 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 983 transitions. [2022-01-10 06:14:32,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:32,177 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 983 transitions. [2022-01-10 06:14:32,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 06:14:32,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:32,178 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:32,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 06:14:32,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:32,396 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:32,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:32,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1704271756, now seen corresponding path program 1 times [2022-01-10 06:14:32,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:32,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830602734] [2022-01-10 06:14:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:32,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:32,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:32,399 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:32,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 06:14:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:32,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:14:32,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:32,903 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:14:32,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:32,903 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:32,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830602734] [2022-01-10 06:14:32,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830602734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:32,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:32,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:14:32,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471074375] [2022-01-10 06:14:32,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:32,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:14:32,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:32,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:14:32,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:14:32,904 INFO L87 Difference]: Start difference. First operand 613 states and 983 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:33,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:33,020 INFO L93 Difference]: Finished difference Result 1189 states and 1918 transitions. [2022-01-10 06:14:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:14:33,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2022-01-10 06:14:33,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:33,026 INFO L225 Difference]: With dead ends: 1189 [2022-01-10 06:14:33,026 INFO L226 Difference]: Without dead ends: 607 [2022-01-10 06:14:33,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:14:33,029 INFO L933 BasicCegarLoop]: 942 mSDtfsCounter, 131 mSDsluCounter, 4553 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 5495 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:33,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 5495 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:14:33,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-01-10 06:14:33,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 592. [2022-01-10 06:14:33,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 462 states have (on average 1.6168831168831168) internal successors, (747), 483 states have internal predecessors, (747), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:33,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 946 transitions. [2022-01-10 06:14:33,043 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 946 transitions. Word has length 97 [2022-01-10 06:14:33,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:33,044 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 946 transitions. [2022-01-10 06:14:33,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:33,044 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 946 transitions. [2022-01-10 06:14:33,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 06:14:33,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:33,045 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:33,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:33,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:33,263 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:33,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:33,264 INFO L85 PathProgramCache]: Analyzing trace with hash 355644681, now seen corresponding path program 1 times [2022-01-10 06:14:33,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:33,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056781862] [2022-01-10 06:14:33,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:33,264 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:33,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:33,265 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:33,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 06:14:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:33,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:14:33,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:14:33,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:33,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:33,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056781862] [2022-01-10 06:14:33,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056781862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:33,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:33,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:14:33,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55307630] [2022-01-10 06:14:33,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:33,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:14:33,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:33,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:14:33,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:14:33,706 INFO L87 Difference]: Start difference. First operand 592 states and 946 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:33,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:33,789 INFO L93 Difference]: Finished difference Result 1153 states and 1856 transitions. [2022-01-10 06:14:33,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:14:33,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 98 [2022-01-10 06:14:33,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:33,794 INFO L225 Difference]: With dead ends: 1153 [2022-01-10 06:14:33,794 INFO L226 Difference]: Without dead ends: 592 [2022-01-10 06:14:33,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:14:33,797 INFO L933 BasicCegarLoop]: 911 mSDtfsCounter, 69 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:33,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 2645 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:14:33,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-01-10 06:14:33,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2022-01-10 06:14:33,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 462 states have (on average 1.6147186147186148) internal successors, (746), 483 states have internal predecessors, (746), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:33,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 945 transitions. [2022-01-10 06:14:33,812 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 945 transitions. Word has length 98 [2022-01-10 06:14:33,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:33,813 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 945 transitions. [2022-01-10 06:14:33,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:33,813 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 945 transitions. [2022-01-10 06:14:33,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 06:14:33,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:33,814 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:33,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:34,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:34,023 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:34,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:34,024 INFO L85 PathProgramCache]: Analyzing trace with hash 719581871, now seen corresponding path program 1 times [2022-01-10 06:14:34,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:34,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464741026] [2022-01-10 06:14:34,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:34,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:34,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:34,025 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:34,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 06:14:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:34,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:14:34,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:14:34,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:34,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:34,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464741026] [2022-01-10 06:14:34,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464741026] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:34,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:34,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:14:34,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096760779] [2022-01-10 06:14:34,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:34,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:14:34,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:34,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:14:34,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:14:34,434 INFO L87 Difference]: Start difference. First operand 592 states and 945 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:34,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:34,518 INFO L93 Difference]: Finished difference Result 1153 states and 1855 transitions. [2022-01-10 06:14:34,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:14:34,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2022-01-10 06:14:34,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:34,523 INFO L225 Difference]: With dead ends: 1153 [2022-01-10 06:14:34,523 INFO L226 Difference]: Without dead ends: 592 [2022-01-10 06:14:34,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:14:34,526 INFO L933 BasicCegarLoop]: 911 mSDtfsCounter, 67 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:34,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 2645 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:14:34,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-01-10 06:14:34,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2022-01-10 06:14:34,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 462 states have (on average 1.6125541125541125) internal successors, (745), 483 states have internal predecessors, (745), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:34,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 944 transitions. [2022-01-10 06:14:34,566 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 944 transitions. Word has length 99 [2022-01-10 06:14:34,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:34,566 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 944 transitions. [2022-01-10 06:14:34,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:14:34,566 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 944 transitions. [2022-01-10 06:14:34,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 06:14:34,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:34,568 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:34,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:34,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:34,786 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:34,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:34,786 INFO L85 PathProgramCache]: Analyzing trace with hash -407089948, now seen corresponding path program 1 times [2022-01-10 06:14:34,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:34,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891766978] [2022-01-10 06:14:34,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:34,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:34,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:34,788 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:34,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 06:14:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:35,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 06:14:35,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:14:35,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:35,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:35,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891766978] [2022-01-10 06:14:35,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891766978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:35,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:35,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:14:35,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082829070] [2022-01-10 06:14:35,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:35,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:14:35,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:35,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:14:35,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:14:35,246 INFO L87 Difference]: Start difference. First operand 592 states and 944 transitions. Second operand has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:35,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:35,430 INFO L93 Difference]: Finished difference Result 1158 states and 1862 transitions. [2022-01-10 06:14:35,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:14:35,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2022-01-10 06:14:35,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:35,435 INFO L225 Difference]: With dead ends: 1158 [2022-01-10 06:14:35,435 INFO L226 Difference]: Without dead ends: 603 [2022-01-10 06:14:35,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:14:35,442 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 109 mSDsluCounter, 5252 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 6138 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:35,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 6138 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:14:35,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2022-01-10 06:14:35,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 594. [2022-01-10 06:14:35,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 464 states have (on average 1.6077586206896552) internal successors, (746), 485 states have internal predecessors, (746), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:35,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 945 transitions. [2022-01-10 06:14:35,464 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 945 transitions. Word has length 100 [2022-01-10 06:14:35,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:35,465 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 945 transitions. [2022-01-10 06:14:35,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:35,465 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 945 transitions. [2022-01-10 06:14:35,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 06:14:35,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:35,467 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:35,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:35,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:35,679 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:35,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:35,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1361114522, now seen corresponding path program 1 times [2022-01-10 06:14:35,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:35,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290241521] [2022-01-10 06:14:35,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:35,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:35,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:35,681 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:35,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 06:14:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:35,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:14:35,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:36,140 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:14:36,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:36,140 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:36,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290241521] [2022-01-10 06:14:36,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290241521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:36,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:36,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:14:36,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085753364] [2022-01-10 06:14:36,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:36,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:14:36,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:36,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:14:36,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:14:36,142 INFO L87 Difference]: Start difference. First operand 594 states and 945 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:36,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:36,329 INFO L93 Difference]: Finished difference Result 1150 states and 1843 transitions. [2022-01-10 06:14:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:14:36,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 101 [2022-01-10 06:14:36,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:36,336 INFO L225 Difference]: With dead ends: 1150 [2022-01-10 06:14:36,336 INFO L226 Difference]: Without dead ends: 599 [2022-01-10 06:14:36,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:14:36,340 INFO L933 BasicCegarLoop]: 888 mSDtfsCounter, 77 mSDsluCounter, 5258 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 6146 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:36,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 6146 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:14:36,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-01-10 06:14:36,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 596. [2022-01-10 06:14:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 466 states have (on average 1.6030042918454936) internal successors, (747), 487 states have internal predecessors, (747), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 946 transitions. [2022-01-10 06:14:36,359 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 946 transitions. Word has length 101 [2022-01-10 06:14:36,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:36,360 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 946 transitions. [2022-01-10 06:14:36,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 946 transitions. [2022-01-10 06:14:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 06:14:36,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:36,361 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:36,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:36,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:36,576 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:36,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:36,577 INFO L85 PathProgramCache]: Analyzing trace with hash -939847826, now seen corresponding path program 1 times [2022-01-10 06:14:36,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:36,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542550943] [2022-01-10 06:14:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:36,577 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:36,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:36,578 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:36,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:14:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:36,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:14:36,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:14:37,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:37,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:37,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542550943] [2022-01-10 06:14:37,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542550943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:37,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:37,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:14:37,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983925005] [2022-01-10 06:14:37,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:37,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:14:37,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:37,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:14:37,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:14:37,051 INFO L87 Difference]: Start difference. First operand 596 states and 946 transitions. Second operand has 7 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:37,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:37,159 INFO L93 Difference]: Finished difference Result 1096 states and 1770 transitions. [2022-01-10 06:14:37,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:14:37,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 102 [2022-01-10 06:14:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:37,166 INFO L225 Difference]: With dead ends: 1096 [2022-01-10 06:14:37,166 INFO L226 Difference]: Without dead ends: 589 [2022-01-10 06:14:37,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:14:37,169 INFO L933 BasicCegarLoop]: 900 mSDtfsCounter, 55 mSDsluCounter, 4433 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 5333 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:37,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 5333 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:14:37,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-01-10 06:14:37,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2022-01-10 06:14:37,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 459 states have (on average 1.6100217864923747) internal successors, (739), 480 states have internal predecessors, (739), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:37,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 938 transitions. [2022-01-10 06:14:37,186 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 938 transitions. Word has length 102 [2022-01-10 06:14:37,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:37,187 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 938 transitions. [2022-01-10 06:14:37,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:37,187 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 938 transitions. [2022-01-10 06:14:37,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 06:14:37,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:37,188 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:37,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:37,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:37,405 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:37,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:37,406 INFO L85 PathProgramCache]: Analyzing trace with hash -519060226, now seen corresponding path program 1 times [2022-01-10 06:14:37,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:37,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470537272] [2022-01-10 06:14:37,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:37,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:37,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:37,408 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:37,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 06:14:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:37,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:14:37,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:14:37,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:37,870 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:37,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470537272] [2022-01-10 06:14:37,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470537272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:37,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:37,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:14:37,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550528578] [2022-01-10 06:14:37,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:37,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:14:37,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:37,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:14:37,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:14:37,871 INFO L87 Difference]: Start difference. First operand 589 states and 938 transitions. Second operand has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:37,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:37,969 INFO L93 Difference]: Finished difference Result 1101 states and 1784 transitions. [2022-01-10 06:14:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:14:37,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-01-10 06:14:37,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:37,974 INFO L225 Difference]: With dead ends: 1101 [2022-01-10 06:14:37,974 INFO L226 Difference]: Without dead ends: 586 [2022-01-10 06:14:37,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:14:37,977 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 97 mSDsluCounter, 4401 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 5293 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:37,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 5293 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:14:37,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-01-10 06:14:37,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2022-01-10 06:14:37,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 456 states have (on average 1.6096491228070176) internal successors, (734), 477 states have internal predecessors, (734), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:37,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 933 transitions. [2022-01-10 06:14:37,995 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 933 transitions. Word has length 103 [2022-01-10 06:14:37,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:37,995 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 933 transitions. [2022-01-10 06:14:37,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:37,995 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 933 transitions. [2022-01-10 06:14:37,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 06:14:37,996 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:37,997 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:38,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:38,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:38,211 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:38,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:38,212 INFO L85 PathProgramCache]: Analyzing trace with hash -696843906, now seen corresponding path program 1 times [2022-01-10 06:14:38,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:38,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993640141] [2022-01-10 06:14:38,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:38,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:38,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:38,213 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:38,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:14:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:38,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:14:38,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:14:38,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:38,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:38,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993640141] [2022-01-10 06:14:38,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993640141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:38,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:38,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:14:38,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520800200] [2022-01-10 06:14:38,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:38,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:14:38,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:38,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:14:38,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:14:38,646 INFO L87 Difference]: Start difference. First operand 586 states and 933 transitions. Second operand has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:38,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:38,728 INFO L93 Difference]: Finished difference Result 1098 states and 1779 transitions. [2022-01-10 06:14:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:14:38,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-01-10 06:14:38,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:38,733 INFO L225 Difference]: With dead ends: 1098 [2022-01-10 06:14:38,733 INFO L226 Difference]: Without dead ends: 578 [2022-01-10 06:14:38,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:14:38,736 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 105 mSDsluCounter, 4392 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 5283 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:38,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 5283 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:14:38,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-01-10 06:14:38,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2022-01-10 06:14:38,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 448 states have (on average 1.6138392857142858) internal successors, (723), 469 states have internal predecessors, (723), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:38,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 922 transitions. [2022-01-10 06:14:38,750 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 922 transitions. Word has length 103 [2022-01-10 06:14:38,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:38,751 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 922 transitions. [2022-01-10 06:14:38,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:38,751 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 922 transitions. [2022-01-10 06:14:38,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 06:14:38,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:38,752 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:38,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:38,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:38,967 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:38,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1456661614, now seen corresponding path program 1 times [2022-01-10 06:14:38,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:38,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581428011] [2022-01-10 06:14:38,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:38,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:38,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:38,970 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:39,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:14:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:39,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 06:14:39,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:14:39,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:39,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:39,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581428011] [2022-01-10 06:14:39,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581428011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:39,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:39,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:14:39,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162785304] [2022-01-10 06:14:39,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:39,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:14:39,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:39,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:14:39,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:14:39,443 INFO L87 Difference]: Start difference. First operand 578 states and 922 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:39,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:39,575 INFO L93 Difference]: Finished difference Result 1084 states and 1757 transitions. [2022-01-10 06:14:39,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:14:39,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2022-01-10 06:14:39,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:39,580 INFO L225 Difference]: With dead ends: 1084 [2022-01-10 06:14:39,581 INFO L226 Difference]: Without dead ends: 578 [2022-01-10 06:14:39,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-10 06:14:39,584 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 67 mSDsluCounter, 5236 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 6123 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:39,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 6123 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:14:39,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-01-10 06:14:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2022-01-10 06:14:39,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 448 states have (on average 1.6116071428571428) internal successors, (722), 469 states have internal predecessors, (722), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 921 transitions. [2022-01-10 06:14:39,600 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 921 transitions. Word has length 104 [2022-01-10 06:14:39,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:39,600 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 921 transitions. [2022-01-10 06:14:39,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 921 transitions. [2022-01-10 06:14:39,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 06:14:39,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:39,602 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:39,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:39,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:39,819 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:39,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:39,820 INFO L85 PathProgramCache]: Analyzing trace with hash -500374532, now seen corresponding path program 1 times [2022-01-10 06:14:39,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:39,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249294345] [2022-01-10 06:14:39,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:39,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:39,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:39,822 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:39,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 06:14:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:40,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 06:14:40,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:14:40,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:40,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:40,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249294345] [2022-01-10 06:14:40,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249294345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:40,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:40,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:14:40,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686912877] [2022-01-10 06:14:40,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:40,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:14:40,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:40,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:14:40,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:14:40,286 INFO L87 Difference]: Start difference. First operand 578 states and 921 transitions. Second operand has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:40,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:40,417 INFO L93 Difference]: Finished difference Result 1128 states and 1814 transitions. [2022-01-10 06:14:40,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:14:40,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 105 [2022-01-10 06:14:40,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:40,422 INFO L225 Difference]: With dead ends: 1128 [2022-01-10 06:14:40,422 INFO L226 Difference]: Without dead ends: 575 [2022-01-10 06:14:40,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:14:40,426 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 101 mSDsluCounter, 5193 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 6068 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:40,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 6068 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:14:40,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-01-10 06:14:40,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2022-01-10 06:14:40,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 445 states have (on average 1.604494382022472) internal successors, (714), 466 states have internal predecessors, (714), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:40,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 913 transitions. [2022-01-10 06:14:40,444 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 913 transitions. Word has length 105 [2022-01-10 06:14:40,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:40,444 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 913 transitions. [2022-01-10 06:14:40,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:40,445 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 913 transitions. [2022-01-10 06:14:40,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 06:14:40,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:40,446 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:40,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:40,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:40,659 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:40,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:40,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1131238039, now seen corresponding path program 1 times [2022-01-10 06:14:40,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:40,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320551705] [2022-01-10 06:14:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:40,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:40,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:40,661 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:40,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:14:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:40,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:14:40,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:14:41,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:41,100 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:41,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320551705] [2022-01-10 06:14:41,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320551705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:41,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:41,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:14:41,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154255309] [2022-01-10 06:14:41,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:41,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:14:41,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:41,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:14:41,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:14:41,102 INFO L87 Difference]: Start difference. First operand 575 states and 913 transitions. Second operand has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:41,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:41,204 INFO L93 Difference]: Finished difference Result 1075 states and 1737 transitions. [2022-01-10 06:14:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:14:41,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 106 [2022-01-10 06:14:41,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:41,209 INFO L225 Difference]: With dead ends: 1075 [2022-01-10 06:14:41,209 INFO L226 Difference]: Without dead ends: 575 [2022-01-10 06:14:41,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-10 06:14:41,211 INFO L933 BasicCegarLoop]: 876 mSDtfsCounter, 50 mSDsluCounter, 5202 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 6078 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:41,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 6078 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:14:41,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-01-10 06:14:41,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2022-01-10 06:14:41,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 445 states have (on average 1.602247191011236) internal successors, (713), 466 states have internal predecessors, (713), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:41,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 912 transitions. [2022-01-10 06:14:41,226 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 912 transitions. Word has length 106 [2022-01-10 06:14:41,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:41,226 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 912 transitions. [2022-01-10 06:14:41,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:41,227 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 912 transitions. [2022-01-10 06:14:41,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 06:14:41,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:41,228 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:41,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-01-10 06:14:41,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:41,442 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:41,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:41,443 INFO L85 PathProgramCache]: Analyzing trace with hash -682474867, now seen corresponding path program 1 times [2022-01-10 06:14:41,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:41,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318214177] [2022-01-10 06:14:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:41,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:41,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:41,445 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:41,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 06:14:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:41,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:14:41,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:41,866 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:14:41,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:41,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:41,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318214177] [2022-01-10 06:14:41,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318214177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:41,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:41,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:14:41,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757087620] [2022-01-10 06:14:41,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:41,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:14:41,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:41,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:14:41,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:14:41,868 INFO L87 Difference]: Start difference. First operand 575 states and 912 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:41,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:41,999 INFO L93 Difference]: Finished difference Result 1113 states and 1782 transitions. [2022-01-10 06:14:42,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:14:42,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2022-01-10 06:14:42,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:42,008 INFO L225 Difference]: With dead ends: 1113 [2022-01-10 06:14:42,008 INFO L226 Difference]: Without dead ends: 572 [2022-01-10 06:14:42,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:14:42,010 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 69 mSDsluCounter, 5188 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 6062 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:42,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 6062 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:14:42,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-01-10 06:14:42,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2022-01-10 06:14:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 442 states have (on average 1.5950226244343892) internal successors, (705), 463 states have internal predecessors, (705), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-01-10 06:14:42,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 904 transitions. [2022-01-10 06:14:42,024 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 904 transitions. Word has length 107 [2022-01-10 06:14:42,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:42,024 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 904 transitions. [2022-01-10 06:14:42,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:42,025 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 904 transitions. [2022-01-10 06:14:42,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 06:14:42,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:42,026 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:42,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:42,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:42,242 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:42,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:42,242 INFO L85 PathProgramCache]: Analyzing trace with hash 2133600348, now seen corresponding path program 1 times [2022-01-10 06:14:42,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:42,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548224520] [2022-01-10 06:14:42,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:42,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:42,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:42,244 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:42,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 06:14:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:42,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:14:42,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:43,057 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 06:14:43,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:43,058 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:43,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548224520] [2022-01-10 06:14:43,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548224520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:43,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:43,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:14:43,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562809018] [2022-01-10 06:14:43,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:43,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:14:43,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:43,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:14:43,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:14:43,060 INFO L87 Difference]: Start difference. First operand 572 states and 904 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:46,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:46,419 INFO L93 Difference]: Finished difference Result 2135 states and 3519 transitions. [2022-01-10 06:14:46,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 06:14:46,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 108 [2022-01-10 06:14:46,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:46,427 INFO L225 Difference]: With dead ends: 2135 [2022-01-10 06:14:46,427 INFO L226 Difference]: Without dead ends: 1643 [2022-01-10 06:14:46,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:14:46,429 INFO L933 BasicCegarLoop]: 1549 mSDtfsCounter, 4496 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 1133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4680 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 3568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1133 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:46,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4680 Valid, 2475 Invalid, 3568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1133 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-10 06:14:46,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2022-01-10 06:14:46,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1456. [2022-01-10 06:14:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1137 states have (on average 1.6499560246262093) internal successors, (1876), 1176 states have internal predecessors, (1876), 257 states have call successors, (257), 60 states have call predecessors, (257), 61 states have return successors, (262), 234 states have call predecessors, (262), 252 states have call successors, (262) [2022-01-10 06:14:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2395 transitions. [2022-01-10 06:14:46,482 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2395 transitions. Word has length 108 [2022-01-10 06:14:46,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:46,482 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 2395 transitions. [2022-01-10 06:14:46,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:14:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2395 transitions. [2022-01-10 06:14:46,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 06:14:46,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:46,486 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:46,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:46,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:46,700 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:46,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:46,701 INFO L85 PathProgramCache]: Analyzing trace with hash -977057793, now seen corresponding path program 1 times [2022-01-10 06:14:46,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:46,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337648925] [2022-01-10 06:14:46,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:46,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:46,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:46,703 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:46,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 06:14:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:47,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:14:47,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-10 06:14:47,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:47,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:47,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337648925] [2022-01-10 06:14:47,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337648925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:47,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:47,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:14:47,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188628583] [2022-01-10 06:14:47,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:47,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:14:47,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:47,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:14:47,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:14:47,481 INFO L87 Difference]: Start difference. First operand 1456 states and 2395 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:14:48,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:48,065 INFO L93 Difference]: Finished difference Result 2844 states and 4793 transitions. [2022-01-10 06:14:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:14:48,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 161 [2022-01-10 06:14:48,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:48,073 INFO L225 Difference]: With dead ends: 2844 [2022-01-10 06:14:48,073 INFO L226 Difference]: Without dead ends: 1468 [2022-01-10 06:14:48,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:14:48,080 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 811 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 2214 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:48,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 2214 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:14:48,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2022-01-10 06:14:48,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1468. [2022-01-10 06:14:48,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1146 states have (on average 1.6448516579406631) internal successors, (1885), 1185 states have internal predecessors, (1885), 257 states have call successors, (257), 63 states have call predecessors, (257), 64 states have return successors, (265), 234 states have call predecessors, (265), 252 states have call successors, (265) [2022-01-10 06:14:48,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2407 transitions. [2022-01-10 06:14:48,134 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2407 transitions. Word has length 161 [2022-01-10 06:14:48,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:48,135 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2407 transitions. [2022-01-10 06:14:48,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:14:48,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2407 transitions. [2022-01-10 06:14:48,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 06:14:48,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:48,139 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:48,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:48,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:48,359 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:48,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:48,359 INFO L85 PathProgramCache]: Analyzing trace with hash -217534617, now seen corresponding path program 1 times [2022-01-10 06:14:48,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:48,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856109307] [2022-01-10 06:14:48,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:48,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:48,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:48,361 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:48,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 06:14:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:48,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:14:48,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-10 06:14:48,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:48,978 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:48,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856109307] [2022-01-10 06:14:48,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856109307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:48,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:48,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:14:48,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684687422] [2022-01-10 06:14:48,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:48,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:14:48,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:48,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:14:48,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:14:48,980 INFO L87 Difference]: Start difference. First operand 1468 states and 2407 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-01-10 06:14:52,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:52,719 INFO L93 Difference]: Finished difference Result 4485 states and 7383 transitions. [2022-01-10 06:14:52,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:14:52,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 162 [2022-01-10 06:14:52,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:52,734 INFO L225 Difference]: With dead ends: 4485 [2022-01-10 06:14:52,734 INFO L226 Difference]: Without dead ends: 3097 [2022-01-10 06:14:52,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-01-10 06:14:52,741 INFO L933 BasicCegarLoop]: 1364 mSDtfsCounter, 2012 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 5264 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 3314 SdHoareTripleChecker+Invalid, 5985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 5264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:52,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2095 Valid, 3314 Invalid, 5985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 5264 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-01-10 06:14:52,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2022-01-10 06:14:52,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 2912. [2022-01-10 06:14:52,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2912 states, 2179 states have (on average 1.606241395135383) internal successors, (3500), 2265 states have internal predecessors, (3500), 601 states have call successors, (601), 113 states have call predecessors, (601), 131 states have return successors, (638), 566 states have call predecessors, (638), 596 states have call successors, (638) [2022-01-10 06:14:52,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 4739 transitions. [2022-01-10 06:14:52,898 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 4739 transitions. Word has length 162 [2022-01-10 06:14:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:52,899 INFO L470 AbstractCegarLoop]: Abstraction has 2912 states and 4739 transitions. [2022-01-10 06:14:52,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-01-10 06:14:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 4739 transitions. [2022-01-10 06:14:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 06:14:52,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:52,904 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:52,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:53,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:53,124 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:53,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:53,124 INFO L85 PathProgramCache]: Analyzing trace with hash 61818361, now seen corresponding path program 1 times [2022-01-10 06:14:53,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:53,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638379875] [2022-01-10 06:14:53,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:53,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:53,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:53,126 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:53,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 06:14:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:53,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:14:53,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:53,722 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-10 06:14:53,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:53,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:53,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638379875] [2022-01-10 06:14:53,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638379875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:53,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:53,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:14:53,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204155343] [2022-01-10 06:14:53,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:53,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:14:53,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:53,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:14:53,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:14:53,724 INFO L87 Difference]: Start difference. First operand 2912 states and 4739 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:14:54,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:54,320 INFO L93 Difference]: Finished difference Result 5789 states and 9590 transitions. [2022-01-10 06:14:54,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:14:54,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2022-01-10 06:14:54,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:54,363 INFO L225 Difference]: With dead ends: 5789 [2022-01-10 06:14:54,363 INFO L226 Difference]: Without dead ends: 2957 [2022-01-10 06:14:54,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:14:54,376 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 799 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:54,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 2215 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:14:54,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2022-01-10 06:14:54,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 2957. [2022-01-10 06:14:54,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2957 states, 2215 states have (on average 1.596388261851016) internal successors, (3536), 2301 states have internal predecessors, (3536), 601 states have call successors, (601), 122 states have call predecessors, (601), 140 states have return successors, (645), 566 states have call predecessors, (645), 596 states have call successors, (645) [2022-01-10 06:14:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2957 states to 2957 states and 4782 transitions. [2022-01-10 06:14:54,494 INFO L78 Accepts]: Start accepts. Automaton has 2957 states and 4782 transitions. Word has length 163 [2022-01-10 06:14:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:54,495 INFO L470 AbstractCegarLoop]: Abstraction has 2957 states and 4782 transitions. [2022-01-10 06:14:54,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:14:54,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2957 states and 4782 transitions. [2022-01-10 06:14:54,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 06:14:54,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:54,499 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:54,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:54,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:54,721 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:54,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:54,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1482898305, now seen corresponding path program 1 times [2022-01-10 06:14:54,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:54,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052433533] [2022-01-10 06:14:54,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:54,722 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:54,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:54,723 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:54,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 06:14:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:55,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:14:55,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-10 06:14:55,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:55,324 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:55,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052433533] [2022-01-10 06:14:55,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052433533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:55,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:55,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:14:55,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166484597] [2022-01-10 06:14:55,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:55,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:14:55,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:55,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:14:55,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:14:55,325 INFO L87 Difference]: Start difference. First operand 2957 states and 4782 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:14:56,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:56,013 INFO L93 Difference]: Finished difference Result 5888 states and 9678 transitions. [2022-01-10 06:14:56,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:14:56,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 165 [2022-01-10 06:14:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:56,031 INFO L225 Difference]: With dead ends: 5888 [2022-01-10 06:14:56,031 INFO L226 Difference]: Without dead ends: 3011 [2022-01-10 06:14:56,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:14:56,044 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 809 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:56,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 2215 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 06:14:56,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2022-01-10 06:14:56,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 3011. [2022-01-10 06:14:56,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 2260 states have (on average 1.584513274336283) internal successors, (3581), 2346 states have internal predecessors, (3581), 601 states have call successors, (601), 131 states have call predecessors, (601), 149 states have return successors, (652), 566 states have call predecessors, (652), 596 states have call successors, (652) [2022-01-10 06:14:56,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 4834 transitions. [2022-01-10 06:14:56,178 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 4834 transitions. Word has length 165 [2022-01-10 06:14:56,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:56,180 INFO L470 AbstractCegarLoop]: Abstraction has 3011 states and 4834 transitions. [2022-01-10 06:14:56,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:14:56,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 4834 transitions. [2022-01-10 06:14:56,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 06:14:56,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:56,184 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:56,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:56,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:56,399 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:56,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:56,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1683405681, now seen corresponding path program 1 times [2022-01-10 06:14:56,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:56,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783397375] [2022-01-10 06:14:56,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:56,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:56,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:56,402 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:56,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 06:14:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:56,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:14:56,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-10 06:14:57,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:14:57,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:57,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783397375] [2022-01-10 06:14:57,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783397375] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:14:57,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:14:57,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:14:57,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110394684] [2022-01-10 06:14:57,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:14:57,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:14:57,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:57,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:14:57,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:14:57,071 INFO L87 Difference]: Start difference. First operand 3011 states and 4834 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:14:57,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:14:57,681 INFO L93 Difference]: Finished difference Result 6005 states and 9784 transitions. [2022-01-10 06:14:57,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:14:57,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2022-01-10 06:14:57,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:14:57,703 INFO L225 Difference]: With dead ends: 6005 [2022-01-10 06:14:57,703 INFO L226 Difference]: Without dead ends: 3074 [2022-01-10 06:14:57,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:14:57,716 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 801 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:14:57,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 2215 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:14:57,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2022-01-10 06:14:57,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 3074. [2022-01-10 06:14:57,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3074 states, 2314 states have (on average 1.5708729472774416) internal successors, (3635), 2400 states have internal predecessors, (3635), 601 states have call successors, (601), 140 states have call predecessors, (601), 158 states have return successors, (659), 566 states have call predecessors, (659), 596 states have call successors, (659) [2022-01-10 06:14:57,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 4895 transitions. [2022-01-10 06:14:57,839 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 4895 transitions. Word has length 167 [2022-01-10 06:14:57,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:14:57,839 INFO L470 AbstractCegarLoop]: Abstraction has 3074 states and 4895 transitions. [2022-01-10 06:14:57,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-01-10 06:14:57,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 4895 transitions. [2022-01-10 06:14:57,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-10 06:14:57,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:14:57,843 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:14:57,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 06:14:58,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:14:58,060 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:14:58,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:14:58,061 INFO L85 PathProgramCache]: Analyzing trace with hash -940200193, now seen corresponding path program 1 times [2022-01-10 06:14:58,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:14:58,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238959957] [2022-01-10 06:14:58,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:14:58,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:14:58,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:14:58,062 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:14:58,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 06:14:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:14:58,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-10 06:14:58,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:14:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:14:58,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:14:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-10 06:14:59,776 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:14:59,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238959957] [2022-01-10 06:14:59,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238959957] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:14:59,776 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:14:59,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2022-01-10 06:14:59,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024997031] [2022-01-10 06:14:59,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:14:59,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 06:14:59,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:14:59,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 06:14:59,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-01-10 06:14:59,778 INFO L87 Difference]: Start difference. First operand 3074 states and 4895 transitions. Second operand has 18 states, 18 states have (on average 11.222222222222221) internal successors, (202), 14 states have internal predecessors, (202), 8 states have call successors, (35), 5 states have call predecessors, (35), 10 states have return successors, (36), 12 states have call predecessors, (36), 7 states have call successors, (36) [2022-01-10 06:15:05,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:05,879 INFO L93 Difference]: Finished difference Result 10628 states and 17374 transitions. [2022-01-10 06:15:05,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 06:15:05,881 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.222222222222221) internal successors, (202), 14 states have internal predecessors, (202), 8 states have call successors, (35), 5 states have call predecessors, (35), 10 states have return successors, (36), 12 states have call predecessors, (36), 7 states have call successors, (36) Word has length 169 [2022-01-10 06:15:05,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:05,919 INFO L225 Difference]: With dead ends: 10628 [2022-01-10 06:15:05,920 INFO L226 Difference]: Without dead ends: 7634 [2022-01-10 06:15:05,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2022-01-10 06:15:05,969 INFO L933 BasicCegarLoop]: 1755 mSDtfsCounter, 4185 mSDsluCounter, 4307 mSDsCounter, 0 mSdLazyCounter, 8047 mSolverCounterSat, 1669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4265 SdHoareTripleChecker+Valid, 6062 SdHoareTripleChecker+Invalid, 9716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1669 IncrementalHoareTripleChecker+Valid, 8047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-01-10 06:15:05,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4265 Valid, 6062 Invalid, 9716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1669 Valid, 8047 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-01-10 06:15:05,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7634 states. [2022-01-10 06:15:06,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7634 to 6780. [2022-01-10 06:15:06,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6780 states, 5051 states have (on average 1.5699861413581468) internal successors, (7930), 5236 states have internal predecessors, (7930), 1378 states have call successors, (1378), 273 states have call predecessors, (1378), 350 states have return successors, (1641), 1351 states have call predecessors, (1641), 1373 states have call successors, (1641) [2022-01-10 06:15:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6780 states to 6780 states and 10949 transitions. [2022-01-10 06:15:06,343 INFO L78 Accepts]: Start accepts. Automaton has 6780 states and 10949 transitions. Word has length 169 [2022-01-10 06:15:06,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:06,344 INFO L470 AbstractCegarLoop]: Abstraction has 6780 states and 10949 transitions. [2022-01-10 06:15:06,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.222222222222221) internal successors, (202), 14 states have internal predecessors, (202), 8 states have call successors, (35), 5 states have call predecessors, (35), 10 states have return successors, (36), 12 states have call predecessors, (36), 7 states have call successors, (36) [2022-01-10 06:15:06,344 INFO L276 IsEmpty]: Start isEmpty. Operand 6780 states and 10949 transitions. [2022-01-10 06:15:06,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 06:15:06,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:06,359 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:06,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 06:15:06,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:15:06,574 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:06,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:06,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2063989594, now seen corresponding path program 1 times [2022-01-10 06:15:06,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:06,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964895476] [2022-01-10 06:15:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:06,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:06,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:06,576 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:15:06,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 06:15:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:06,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:15:06,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:15:07,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:07,153 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:07,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964895476] [2022-01-10 06:15:07,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964895476] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:07,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:07,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:15:07,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745748990] [2022-01-10 06:15:07,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:07,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:15:07,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:07,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:15:07,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:15:07,155 INFO L87 Difference]: Start difference. First operand 6780 states and 10949 transitions. Second operand has 8 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:15:07,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:07,384 INFO L93 Difference]: Finished difference Result 9747 states and 15701 transitions. [2022-01-10 06:15:07,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:15:07,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 171 [2022-01-10 06:15:07,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:07,398 INFO L225 Difference]: With dead ends: 9747 [2022-01-10 06:15:07,398 INFO L226 Difference]: Without dead ends: 3037 [2022-01-10 06:15:07,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:15:07,421 INFO L933 BasicCegarLoop]: 865 mSDtfsCounter, 69 mSDsluCounter, 5134 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 5999 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:15:07,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 5999 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:15:07,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2022-01-10 06:15:07,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 3037. [2022-01-10 06:15:07,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 2291 states have (on average 1.5691837625491052) internal successors, (3595), 2377 states have internal predecessors, (3595), 587 states have call successors, (587), 140 states have call predecessors, (587), 158 states have return successors, (645), 552 states have call predecessors, (645), 582 states have call successors, (645) [2022-01-10 06:15:07,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4827 transitions. [2022-01-10 06:15:07,580 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4827 transitions. Word has length 171 [2022-01-10 06:15:07,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:07,581 INFO L470 AbstractCegarLoop]: Abstraction has 3037 states and 4827 transitions. [2022-01-10 06:15:07,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:15:07,581 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4827 transitions. [2022-01-10 06:15:07,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 06:15:07,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:07,584 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:07,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-01-10 06:15:07,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:15:07,802 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:07,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:07,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2064880959, now seen corresponding path program 1 times [2022-01-10 06:15:07,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:07,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626814179] [2022-01-10 06:15:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:07,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:07,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:07,812 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:15:07,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 06:15:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:08,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 06:15:08,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 06:15:08,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:15:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-10 06:15:09,426 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:09,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626814179] [2022-01-10 06:15:09,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626814179] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:15:09,426 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:15:09,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-01-10 06:15:09,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050827313] [2022-01-10 06:15:09,426 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:15:09,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 06:15:09,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:09,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 06:15:09,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-01-10 06:15:09,428 INFO L87 Difference]: Start difference. First operand 3037 states and 4827 transitions. Second operand has 14 states, 14 states have (on average 14.428571428571429) internal successors, (202), 12 states have internal predecessors, (202), 8 states have call successors, (36), 5 states have call predecessors, (36), 8 states have return successors, (36), 10 states have call predecessors, (36), 7 states have call successors, (36) [2022-01-10 06:15:11,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:11,893 INFO L93 Difference]: Finished difference Result 6042 states and 9694 transitions. [2022-01-10 06:15:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:15:11,893 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.428571428571429) internal successors, (202), 12 states have internal predecessors, (202), 8 states have call successors, (36), 5 states have call predecessors, (36), 8 states have return successors, (36), 10 states have call predecessors, (36), 7 states have call successors, (36) Word has length 175 [2022-01-10 06:15:11,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:11,908 INFO L225 Difference]: With dead ends: 6042 [2022-01-10 06:15:11,909 INFO L226 Difference]: Without dead ends: 3083 [2022-01-10 06:15:11,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-01-10 06:15:11,921 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 1983 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 4090 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 4653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 4090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:15:11,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 2961 Invalid, 4653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 4090 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 06:15:11,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2022-01-10 06:15:12,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 3065. [2022-01-10 06:15:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3065 states, 2312 states have (on average 1.5640138408304498) internal successors, (3616), 2398 states have internal predecessors, (3616), 587 states have call successors, (587), 140 states have call predecessors, (587), 165 states have return successors, (673), 559 states have call predecessors, (673), 582 states have call successors, (673) [2022-01-10 06:15:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3065 states to 3065 states and 4876 transitions. [2022-01-10 06:15:12,034 INFO L78 Accepts]: Start accepts. Automaton has 3065 states and 4876 transitions. Word has length 175 [2022-01-10 06:15:12,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:12,034 INFO L470 AbstractCegarLoop]: Abstraction has 3065 states and 4876 transitions. [2022-01-10 06:15:12,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.428571428571429) internal successors, (202), 12 states have internal predecessors, (202), 8 states have call successors, (36), 5 states have call predecessors, (36), 8 states have return successors, (36), 10 states have call predecessors, (36), 7 states have call successors, (36) [2022-01-10 06:15:12,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3065 states and 4876 transitions. [2022-01-10 06:15:12,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-01-10 06:15:12,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:12,038 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:12,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-01-10 06:15:12,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:15:12,258 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:12,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:12,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2054477734, now seen corresponding path program 1 times [2022-01-10 06:15:12,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:12,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450304362] [2022-01-10 06:15:12,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:12,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:12,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:12,260 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:15:12,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 06:15:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:12,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:15:12,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 06:15:12,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:15:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 06:15:13,426 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:13,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450304362] [2022-01-10 06:15:13,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450304362] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:15:13,427 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:15:13,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-01-10 06:15:13,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217775396] [2022-01-10 06:15:13,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:15:13,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 06:15:13,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:13,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 06:15:13,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:15:13,431 INFO L87 Difference]: Start difference. First operand 3065 states and 4876 transitions. Second operand has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 11 states have internal predecessors, (168), 6 states have call successors, (31), 5 states have call predecessors, (31), 6 states have return successors, (30), 7 states have call predecessors, (30), 5 states have call successors, (30) [2022-01-10 06:15:17,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:15:17,406 INFO L93 Difference]: Finished difference Result 10515 states and 16916 transitions. [2022-01-10 06:15:17,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 06:15:17,407 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 11 states have internal predecessors, (168), 6 states have call successors, (31), 5 states have call predecessors, (31), 6 states have return successors, (30), 7 states have call predecessors, (30), 5 states have call successors, (30) Word has length 176 [2022-01-10 06:15:17,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:15:17,434 INFO L225 Difference]: With dead ends: 10515 [2022-01-10 06:15:17,434 INFO L226 Difference]: Without dead ends: 7518 [2022-01-10 06:15:17,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-01-10 06:15:17,446 INFO L933 BasicCegarLoop]: 1410 mSDtfsCounter, 4726 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 4322 mSolverCounterSat, 1396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4811 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 5718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1396 IncrementalHoareTripleChecker+Valid, 4322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:15:17,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4811 Valid, 3201 Invalid, 5718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1396 Valid, 4322 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-01-10 06:15:17,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7518 states. [2022-01-10 06:15:17,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7518 to 7464. [2022-01-10 06:15:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7464 states, 5627 states have (on average 1.5414963568508975) internal successors, (8674), 5825 states have internal predecessors, (8674), 1404 states have call successors, (1404), 380 states have call predecessors, (1404), 432 states have return successors, (1711), 1335 states have call predecessors, (1711), 1399 states have call successors, (1711) [2022-01-10 06:15:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7464 states to 7464 states and 11789 transitions. [2022-01-10 06:15:17,784 INFO L78 Accepts]: Start accepts. Automaton has 7464 states and 11789 transitions. Word has length 176 [2022-01-10 06:15:17,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:15:17,784 INFO L470 AbstractCegarLoop]: Abstraction has 7464 states and 11789 transitions. [2022-01-10 06:15:17,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.272727272727273) internal successors, (168), 11 states have internal predecessors, (168), 6 states have call successors, (31), 5 states have call predecessors, (31), 6 states have return successors, (30), 7 states have call predecessors, (30), 5 states have call successors, (30) [2022-01-10 06:15:17,785 INFO L276 IsEmpty]: Start isEmpty. Operand 7464 states and 11789 transitions. [2022-01-10 06:15:17,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-10 06:15:17,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:15:17,789 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:15:17,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-01-10 06:15:18,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:15:18,004 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:15:18,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:15:18,005 INFO L85 PathProgramCache]: Analyzing trace with hash -930289979, now seen corresponding path program 1 times [2022-01-10 06:15:18,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:15:18,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095661927] [2022-01-10 06:15:18,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:15:18,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:15:18,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:15:18,006 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:15:18,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-01-10 06:15:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:15:18,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 06:15:18,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:15:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 06:15:18,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:15:18,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:15:18,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095661927] [2022-01-10 06:15:18,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095661927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:15:18,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:15:18,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:15:18,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304664982] [2022-01-10 06:15:18,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:15:18,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:15:18,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:15:18,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:15:18,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:15:18,840 INFO L87 Difference]: Start difference. First operand 7464 states and 11789 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19)